ISSUE The Periodical of TUSAS Engine Industries, Inc. (TEI).

TEI IS NOW GLOBALLY THE BIGGEST SUPPLIER OF “LEAP” ENGINE, THE BEST-SELLING ENGINE OF ALL TIMES IN AVIATION HISTORY The ÖRS project blaze a trail for our country and industry

We all together have had great time at TEI's picnic organization

TEI continues to establish new cooperation with universities İŞ SAĞLIĞI VE GÜVENLİĞİ

02 TEI POST

03 TABLE OF CONTENTS EDITORIAL

05 / MESSAGE FROM THE PRESIDENT & CEO Dear TEI Post Readers, 06 / COVER STORY We are happy to meet you with our 131st issue in early TEI IS NOW GLOBALLY THE BIGGEST SUPPLIER OF “LEAP” 2017. ENGINE, THE BEST-SELLING ENGINE OF ALL TIMES IN AVIATION HISTORY Our "Cover Story" in this new issue features Advanced Manufacturing Technologies Building, which was 09 / ACTIVITIES & PROJECTS inaugurated on September 21, 2016. PROJECTS HR PROCESSES We appreciate your valuable participation in "TEI Post Satisfaction Survey" which was held for the first time to 13 / NEWS ABOUT TEI learn about your opinions on our magazine. We remain committed to improving our magazine in light of the 20 / TECHNICAL ARTICLE feedback from you. 26 / NEWS ABOUT THE AVIATION INDUSTRY In this issue, we have covered Eskisehirspor, the football 32 / NEWS ABOUT OUR EMPLOYEES team of our city, based upon your requests. In addition, as per your requests, we present posters with this issue for 35 / VISITORS the first time in our history. 38 / EXHIBITIONS AND ORGANIZATIONS Burak Balci and Mujdat Aslan again will take part in 40 / ENVIRONMENTAL AND OCCUPATIONAL SAFETY this issue with articles on sports and aviation safety on our column “By TEI Staff”; we would like to take this 42 / EVENTS opportunity to thank them once again and remind you all 46 / SOCIAL RESPONSIBILITY that all TEI staff are welcome to contribute our magazine with their articles. 48 / BY TEI EMPLOYEES See you in our 132nd issue... 56 / HOBBIES OF OUR EMPLOYEES ILKER KURTULUS - “MUSIC REPRESENTS MY IDEA OF LIFE” SEMIH KOSEOGLU - PALUDARIUM BRINGS NATURE INTO YOUR HOME! For and On Behalf of TEI Head Office Address Prof. Mahmut F. Aksit TUSAS Engine Industries, Inc. Esentepe Mah. Cevreyolu Bulvari 58 / ACHIEVEMENT BOARD Executive Editor No: 356 26003 K. Levent Tufekci 59 / SOCIAL CLUBS Tepebasi / Eskisehir - Turkey 60 / TRAVEL Managing Editor Tel: +90 (222) 211 21 00 Duygu Gokduman Pilatin Fax: +90 (222) 211 21 01 LET'S TAKE A HISTORY, CULTURE AND NATURE TOUR www.tei.com.tr Editorial Board IN THE BALKANS BY SAMET ASLAN Senay Dortkasli Publisher GOYNUK, TARAKLI, YEDIGOLLER BY FATIH OZCAKIL Doruk Kocer Dumat Ofset Matbaacilik San. Tic. Ltd. Sti. Tugba Onder Bahcekapi Mah. 2477 Sok. No: 6 70 / PERSONAL DEVELOPMENT Erkan Balk Sasmaz / Ankara Tel: +90 (312) 278 82 00 PROF. ACAR BALTAS - CAREER SUCCESS, SATISFACTION, Editor HEALTH AND LONGEVITY Kadriye Yuzeroglu Edition Period Jan - June 2017 73 / HEALTH Visual Director Emre Ergul ACIBADEM INSURANCE - NECK PAIN MAY BE A SIGN OF Publication Type Regional Periodical CERVICAL DISC HERNIATION! Production Published Date 75 / ANNOUNCEMENTS FROM TEI 24 Nisan 2017

All rights are reserved on behalf of TUSAS Engine Industries, Inc.

04 MESSAGE FROM THE PRESIDENT & CEO

TEI: THE LEADING SUPPLIER OF LEAP ENGINE

st 'm happy to meet you again with the 131 issue of projects at a quick pace. As we sustain the TEI our corporate magazine TEI Post. First, I would like Intelligence Workshops project, which was launched in the to thank all TEI employees for their contributions first half of 2016, we have also entered the second term of I throughout 2016, which turned out to be successful Vocational High School Coaching Program, a collaborative year on our way to accomplish our vision of "To be initiative with Private Sector Volunteers Association. I globally competitive, original power systems OEM". In would like to thank all TEI employees who volunteered to the second half of 2016, we saw numerous significant support these projects. achievements and developments, including inauguration of our Advanced Manufacturing Technologies Building in Besides all these good news, we also experienced a particular. Thanks to this investment, we are now one of deep sorrow in 2016 at TEI family. Our beloved colleague the two facilities, manufacturing blisk parts of the LEAP Serhan Kurt passed away. I extend my sincerest engine, along with GE. Furthermore, we have become condolences to all TEI staff and his family. the largest global supplier for the LEAP engines, the most preferred next generation commercial engine to power With your invaluable supports, I believe that 2017 will be Boeing 737Max and Airbus 320Neo commercial aircraft. a milestone for our company. I have absolute faith that our success in parts manufacturing will be reinforced Also, during this period, we attended the Farnborough with our successful initiatives in R&D projects, which International Airshow, one of the most prestigious trade will contribute, to the targets of our company, and we shows in global aviation industry, and Istanbul Airshow, move forward with firm steps toward being a globally the most prominent aviation organization in Turkey, to competitive company and the one in the national market. display the 1:1 scale models of Turkey’s first indigenous TS1400 turbine engine to power the Original Turkish I hope 2017 turns out to be a year of happiness, health Helicopter and PD170 engine being developed for and well-being for the entire TEI family. Medium-Altitude Long-Endurance (MALE) unmanned aerial vehicles. Greetings and best regards,

In addition to the achievements we demonstrated in our Prof. Mahmut F. Aksit activity areas, we also maintained our social responsibility President & CEO, TEI

05 COVER STORY

TEI IS NOW GLOBALLY THE BIGGEST SUPPLIER OF "LEAP" ENGINE, THE BEST-SELLING ENGINE OF ALL TIMES IN AVIATION HISTORY

EI, the leading aviation engines manufacturer in "Next generation" digital building Turkey, inaugurated its Advanced Manufacturing TEI President and CEO Prof. Mahmut F. Aksit gave the Technologies Building with an opening ceremony on keynote speech at the opening ceremony, underlining T September 21. Fikri Isik, Minister of Defense, Nabi TEI's position as the leading supplier of LEAP engine Avci, Minister of Culture and Tourism, Azmi Celik, Governor parts globally thanks to this new investment in Advanced of Eskisehir, General Hasan Kucukakyuz, Commander Manufacturing Technologies Building. He also noted of Combatant Air Force, Harun Karacan, AKP Member that the building, which cost USD 110 million in total of the Parliament for Eskisehir, Prof. Yilmaz Buyukersen, including the manufacturing equipment it accommodates, Metropolitan Mayor of Eskisehir, Ferhat Kapici, Chief Public is a "next-generation" digital building, and it features Prosecutor of Eskisehir, Prof. Naci Gundogan, President a software system, which enables monitoring lighting, of Anadolu University, Lt. Gen. (R) Orhan Akbas, Director heating and cooling system as well as all machines General of Turkish Armed Forces Foundation, Koksal Liman, through a network. Chairman at TEI, Muharrem Dortkasli, former CEO of TAI, Mike Wilking, Chief Marketing Officer for Military Systems In his keynote speech, Aksit also shared that exports and Business Development at General Electric Aviation and revenue of USD 2 billion is expected from the parts to be many high profile delegates attended the ceremony which produced at the Advanced Manufacturing Technologies represents a significant milestone for both TEI and the Building over the next two decades, and reminded that at industry. least one in every two civil aircraft currently in operation

06 TEI POST

Advanced Manufacturing Technologies Building is put into service with a ribbon-cutting ceremony at the stage.

Fikri Isik, Minister of Defense, Nabi Avci, Minister of Culture and Tourism.

TEI, the leading supplier of LEAP engine parts globally, inaugurated its Advanced Manufacturing Technologies Building with a splendid ceremony. Export revenue of nearly USD 2 billion is expected by 2035 from the engine parts to be produced at this "next generation" building.

worldwide is equipped with the parts produced by TEI. Prof. Mahmut F. Aksit He also briefly mentioned about TEI's targets, noting: "We aim to increase this ratio to 3/5 and 4/5 from 1/2 and position TEI at the top place in global aviation industry. We also aim to double and triple our total sales revenues, which was USD 260 million as of the year-end of 2014, in the next 10 and 20 years, respectively. Currently the total value of the firm orders we received is around USD 3 billion. Considering that our total revenues for the previous year realized at USD 300 million, we can say that we have guaranteed our company's future for the next 30 years. We are going to make a giant leap thanks to our new investments."

"Future investments are on the way" Mike Wilking, Chief Marketing Officer for Military Systems and Business Development at General Electric Aviation spoke after Prof. Mahmut F. Aksit, expressing their

07 COVER STORY

happiness to see TEI become a leading engine part At the opening ceremony, company ID cards were presented manufacturer globally during their partnership for over 30 to 31 new employees who completed the On-the-Job Training years, and noting that future investment are on the way. Program conducted by TEI in coordination with the Ministry Nabi Avci, Minister of Culture and Tourism and Member of Education and Ministry of Labor and Social Security and of the Parliament for Eskisehir was also present at the joined TEI. ceremony and gave a short speech, highlighting the importance of TEI to Eskisehir. He underlined that besides its valuable contributions to the industry, TEI also created ADVANCED MANUFACTURING TECHNOLOGIES a great value for social life in Eskisehir with the social and BUILDING FOR THE FUTURE OF educational projects it undertook. MANUFACTURING "TEI is a source of pride for Turkey" Minister of Defense Fikri Isik gave the final speech at the • One of the two plants capable of producing compressor opening ceremony, underlining TEI's achievements so blisks for the LEAP engine worldwide, far: "TEI is a source of pride for Turkey as it has become • USD 10 million invested in building. Investments in 100 a leading global engine part manufacturer and turned machines with a total cost of USD 100 million to be Eskisehir into an important center in this area. completed by 2019,

Companies which have faith in Turkey always win; and • 300 people will be employed, General Electric represents a good example of this fact," • More digital application for paperless manufacturing, he noted and went on to say: "This opening ceremony • Sales revenue of around USD 2 billion by 2035. marks a very important milestone. We are also engaged in some good and promising investments. We have built a fully indigenous diesel engine for our national unmanned aerial vehicles. Now, we aim at a production of an indigenous aircraft engine, which will not be subject to any restrictions by third parties and exported worldwide. Turkey will have built a fully indigenous original aircraft engine within the next five years. And TEI will make it happen in Eskisehir."

Minister Isik congratulated TEI President & CEO Prof. Mahmut F. Aksit and all TEI managers and employees on their outstanding efforts before ending his speech. Finally, the Advanced Manufacturing Technologies Building was put into service with a ribbon-cutting ceremony at the stage. Minister of Defense Fikri Isik and Minister of Culture and Tourism Nabi Avci visited the manufacturing site and together they pushed the button to launch production of blisk parts for use in next generation engines.

08 ACTIVITIESTEI POSTAND PROJECTS

ACTIVITIES IN THE SECOND HALF OF 2016

PROJECTS LEAP ENGINE BLISK MANUFACTURING

TEI continues its activities under LEAP engine blisk manufacturing project. The following works were completed in the second half of 2016 or are still in progress as part of the project: • B1000 Building, which has been designed by using lean manufacturing principles and supported with digitization applications under industry 4.0 scope to provide high level productivity, was opened in September 21, 2016. • As part of the project, new part introduction processes have been completed for all blisk stages and serial production started in B1000 building. • Inertia welding, vertical turning, 5-axis milling, CSM (Curved Slot Mill), grinding, balancing and CMM machines were installed and put into service as part of the project.

LEAP Engine Stage 1-5 Blisks Advanced Manufacturing Technologies Building - LEAP Blisk Line

09 ACTIVITIES AND PROJECTS

DEVELOPMENT PROJECT FOR THE TITANIUM The national forging industry in Turkey supplies over 150 K AND NICKEL SUPER ALLOY FORGING tons of forged parts per year to domestic and international TECHNOLOGIES IN AVIATION (ÖRS) companies, operating mainly in automotive industry. The ÖRS Project will enable the establishment of a competitive supply network for titanium and nickel-based superalloy forged parts that can serve national and international The ÖRS Project was launched on March 17, 2016 under engine programs in the mid- and long-term, and thus the sponsorship of the Undersecretariat for Defense dependence on foreign sources will be significantly Industries (UDI) with the aim of gaining titanium and nickel reduced in national aviation industry. super alloy forging technologies, which are not currently available in Turkey despite their frequent use in gas turbine engines worldwide. FULL AUTOMATION AND FAILURE PREVENTION

Robot-aided marking application has been introduced with the Full Automation and Failure Prevention Project in "dot peen" marking operation, the most widely used part marking method in manufacturing. The project was designed by leveraging on TEI's know-how and realized in collaboration with a local company, providing 65% average reduction of operation hours. The following applications, classified in four main groups, were also put in place under the project.

Occupational Safety • Security fence meeting applicable standards • Security door w/ automatic locking system Hot-Forged Sample Part • Light barriers

Failure Prevention Systems Impellers made from Ti6Al4V (UNS R56400) and • Fully automated data entry with QR code prototypes of turbine disks made Inconel718 (UNS • Part verification system N07718) will be produced within the scope of project. In • Automatic program retrieval system that respect, these materials will be forged by conventional • Positioning of workpieces at loading stations w/ high- closed die hot forging, heat treated after forging and precision servo-controls machined to get ultrasonic envelope geometries. • Pneumatic actuators for angular alignment of Following the production processes, prototypes will workpieces be subjected to mechanical and metallurgical tests • Identification of previously marked serial numbers and inspections to determine whether the required • Record retention of the person performing the marking specifications are achieved or not. Impeller and turbine process disk geometries, belonging to TEI Turboshaft engine • Record retention of alarms design, are selected as project target. • Probe system for marker pin length verification Prime Contractor TEI TEI taking the lead position as the prime contractor for the project, subcontractors will be responsible for development of hot forging and heat treatment processes for the impeller and turbine disk. Metal Forming Center of Excellence of Atilim University will also be supporting the project team as project consultant on process modeling and raw material characterization for prediction of forging parameters.

With the ÖRS Project, titanium and nickel-based superalloy forging capabilities will be acquired by national industry for the production of aforementioned turboshaft engine parts first, then other similar parts in different gas turbine engines. Robotic Part Marking Station

10 TEI POST

Traceability ON-THE-JOB TRAINING PROGRAM • All marked serial numbers stored in database • Alarm function if same serial number marked previously This first phase of the on-the-job training program, • Database containing operator, date and time records which was launched in January 2016 under the • Password-authenticated administrator authorization for collaboration of TEI and Turkish Employment Agency to special setting and program changes help inexperienced individuals gain some professional and work experience, was completed. The second Productivity phase was launched in August with 45 trainees from six • Smart and common fixture design for loading of branches. Covering a six-month period, the program different parts ended on December 31, 2016. The trainees will undergo • Quick connection systems between fixture and loading an assessment process for recruitment based on their station performances and current vacancies. • One operator-double loading station configuration Furthermore, 27 trainees were selected as part of the • Diameter, top surface and bottom surface marking of "Qualified Airmen" program launched in July under the workpieces in one set-up leadership of Sabiha Gokcen Vocational and Technical Anatolian High School, and the trainees started to attend on-the-job training after completing the theoretical training HR PROCESSES sessions at school. These trainees will be assessed for recruitment based on their performances in 2017. "TURBOSHAFT ENGINE DEVELOPMENT PROJECT" RECRUITMENT PROGRAM TITLE-BASED PERSONAL DEVELOPMENT TRAINING PROGRAMS Program posters were hung on the notice boards of relevant departments of universities to attract new- graduates and experienced engineers to take part in Turboshaft Engine Development Project and join TEI and applications are collected under the theme "My National Helicopter Engine".

A personal development training program was designed for all white-collar employees in 2016. All personal development processes were planned by title, matching the competencies to be acquired as a result of the trainings with the competency level required for each title. 7781 hours of training were delivered in total under the program. An Outdoor Training was organized for leaders as an outdoor activity called the "Future in the Skies" to encourage teamwork and increase motivation.

11 ACTIVITIES AND PROJECTS

TEI DEVELOPMENT CENTER PROJECT up a more fair and transparent system. A performance committee, consisting of volunteering white- and blue- TEI Development Center, a project for high-performing collar employees, has been formed for the project, and the senior employees, continues with 3 modules and 72 relevant actions are executed by the senior management trainees between October 2016 - February 2017. The and the committee in coordination. The project is expected "Assessment Center" is applied at the beginning and end to be completed by 2017 including the software process. of the program.

AWARD-APPRECIATION-RECOGNITION

A new Award-Appreciation-Recognition system was put in place in 2016 with a special budget. In this respect, Management and Employee Awards were defined and put into practice. With the new system, the award and recognition practices have shown a significant increase across the company compared to previous years.

EXECUTIVE TRAINING

The Mini MBA program organized for our senior management and executives ended and the participants received their certificates. Personal development and outdoor training programs were also organized for our executives.

ORGANIZATIONAL RESTRUCTURING OF WORKSHOPS

In 2015, lean manufacturing cells were created with the part groups transferred under the responsibility of Manufacturing Management and the engineers from other relevant managements; and distribution of blue-collar personnel was organized accordingly. In 2016, in addition to this structure, a reorganization process was initiated to LIFE COACHING enable monitoring of the workshop in a more controlled manner and elaborate annual targets and performances We have put in place a half-day long "life coaching" of blue-collar personnel. As part of the process, current program to be organized two times a week to support technical assistance specialists were assigned as employees professionally. As part of the program, an workshop supervisors so that six workshop supervisors expert psychiatrist continues to provide consulting will be present in total in every shift. Supervision of services at our On-Site Physician's Office. six blue-collar personnel has also been vested in six technical leads working at Manufacturing Managements in CONTINUOUS IMPROVEMENT PROJECT addition to their existing responsibilities. Technicians and workstations under the responsibility of Manufacturing We have rolled out the "Continuous Improvement Managements have been revised accordingly to reinforce Project" to improve the performance system and set the workshop-based restructuring process.

12 NEWS ABOUT TEI

MAIN ENGINE PROGRAMS USING PARTS MADE BY TEI

GEnx

TEI produces 42 different parts including disks, spinners, seals, bearing housings, casings and blisks for GEnx engines. The GEnx is the fastest-selling, high-thrust jet engine in GE Aviation history with more than 1600 engines on order. In addition to powering the four-engine Boeing 747-8, the GEnx engine is also the best-selling engine for the Boeing 787 Dreamliner.

The GEnx engine represents a giant leap forward in propulsion technology, using the latest materials and design processes to reduce weight, improve performance and deliver a more fuel-efficient commercial aircraft engine. The GEnx engine is also the world's first commercial jet engine with both a front fan case and fan blades made of carbon-fiber composites.

CFM56 TEI produces 18 different parts including shafts, disks and seals for the CFM56 engine, the best-selling jet engine in the world. The CFM56 engine set the standard for single-aisle commercial jet engines. With more than 30,000 engines delivered to date, it powers Airbus A318, A319, A320 and A321 aircraft for more than 550 operators worldwide.

F110 The F110 engine, which has a special meaning for TEI, currently continues to power best-in-class fighter aircraft in 13 countries. TEI produces 60 different parts for this engine family including seals, disks, shafts, mixing ducts, augmenter liners and flame holders. The F110 family provides industry-leading power for F-15 and F-16 fighter aircraft and continuously infuses state-of-the-art enhancements for added mission accomplishment.

13 NEWS ABOUT TEI

GE90

TEI produces 20 different parts including seals, disks, impingement rings and seal supports for the GE90, world’s largest turbofan engine built exclusively for Boeing 777 aircraft. The GE90 engine is also the first-ever commercial aircraft engine using carbon-fiber composite fan blades.

LEAP

TEI produces 41 different parts, notably disks and blisks, for the new generation LEAP engines. The LEAP delivers a 15% improvement in fuel consumption, compared to today’s most fuel-efficient engine and will replace CFM56 engines as the most preferred commercial engine by airline operators. The LEAP engine will power Airbus A320 Neo, Boeing 737 Max and COMAC 919.

CF6

For more than 40 years, the CF6 engine family has established an impressive operational record and compiled nearly 400 million flight hours since they first entered commercial revenue service. TEI produces 34 different parts for this engine family, including spools, disks and shafts.

14 TEI POST

TP400 is the most powerful Western turboprop engine producing 11,000 LM2500 TP400 shp. TEI not only contributed to the design process, but also produces five main parts including FBS module, exhaust cone, primary nozzle and The LM2500 is the most widely applied gas turbine, IMC for the TP400 engine. derived from CF6-6 aircraft engines, to power marine platforms and for industrial applications. For the LM2500 engine, TEI produces 36 different parts in total including shafts, dome plates and torque shafts.

CF34

In early 1990s, the CF34 opened a new period in regional aviation; and recording over 100 million flight hours and more than 80 million flight cycles since then, it sets the standards for performance, durability and reliability in this area. 8 different parts for CF34 jet engines, including shafts and seals are produced by TEI. Considering the increasing demand, CF34 engines are expected to power more than 7500 regional aircraft by 2020.

GP7200

The GP7200 engine design comes from the historic collaboration of two industry giants, General Electric and Pratt & Whitney to power Airbus A380. TEI produces 3 parts for this engine including casings and stub shafts.

15 NEWS ABOUT TEI

DESIGN, MANUFACTURING AND ITERATIVE METHODOLOGY OF CATHODE TOOLS DEVELOPED FOR ELECTRO-CHEMICAL MILLING PROCESS

Parametric modeling technique has been developed for but cause pitting due to irregular electrolyte flow, should be design and geometric adjustment of the cathode tool used smoothed by experience. in processing of final geometry for the fan blades of the blisks adapted to Electro-Chemical Milling (ECM) process.

After taking cross-sections of the fan blade, modeling process for the immeasurable sections of cathode is completed, enabling supply of a smooth electrolyte flow to Figure 3. Set up for the fan blade through the most outer platform. (Figure 1) part and ECM cathode Figure 1A Figure 1B positioning on the machine.

ECM process is a highly fast process; processing a blisk with 70 fan blades takes around six hours. Following ECM, vibratory finishing is applied to smooth the surface and remove the layer of mud to make the part ready for shot peen process. Then, the material of the surfaces where the part contacts the ECM fixture is removed by a turning process after the ECM; seal holes should also be drilled after final Figure 1A: Cross-sections from fan blade geometry turning operation. Figure 1B: Core modeling of the gap between the cathodes in the cross-section taken. Proper fan blade sizes and measures are obtained with ECM process, and generally, no additional processing is necessary. However, there might be some uneven surfaces on platform A solid-state model is obtained through surface modeling profile, which need additional processing. These areas by using all the cross-sections. This model is used to should be smoothed with robotic deburring process. Robotic develop the concave and convex surface geometries of the deburring is more repetitive compared to manual deburring as fan blade. it is more precise and programmed, and it is used to achieve Once the fan blade geometry is developed, the platform the designed measurements for the platform profile. surface between two fan blades and the radius of the concave and convex bottom surfaces where the fan blade The cathodes are tried in ECM process and the measurement meets the platform, are also modeled, giving the model its results obtained are assessed, and if any revisions are to final form. be made on the cathode, the preset parameter values are changed and the cathode model is updated. The cathode Minimum 5-axis milling machines should be used for of the new project is not ready for production after the first cathode manufacturing. The machine should have a fast- revision but requires several revisions for the adjustment of rotating spindle, a high positioning repeatability and angular the fan blade geometry and correction of the platform profile. milling capability. (Figure 2) After each revision, a trial cut should be performed and the measures should be verified with CMM measurements. This Figure 2A Figure 2B new method assigns 20 parameters to check concave and convex profile of each cross-section and modify other length and thickness measures. Considering that fan blade geometry involves 12-15 measurable and 6-8 measurable cross- sections, it is clear that there are at least 300 parameters to check. All these parameters are recorded in a built-in sheet and every iteration is also recorded on another sheet to create Figure 2A: Machine set up for milling. a macro where all iterations are complied to check the model Figure 2B Concave and convex cathodes processed by milling. geometry.

Cathodes produced by milling should be rubbed with felt Process development of stage-5 blisks for LEAP 1A/C and 1B and sandpaper for deburring and edge finishing. Especially is completed was completed with this methodology before those areas, which cannot be read through measurements proceeding to mass production.

16 TEI POST

PRODUCT LIFE CYCLE MANAGEMENT PRACTICES

Product Lifecycle Management (PLM) is the process of just like operating system managing numerous software managing all data and processes for a product throughout that we upload on it to use, PLM software manages its the entire lifecycle from inception to end-of-life. The term various data by associating them with each other through PLM originally comes from the design process of Rockwell integration with all software used across the company. International's B-1B bomber, while its first application was in 1895 at American Motors Corporation (AMC). [1] A common database is the main component of PLM solutions. It creates a common database for all the data The global PLM market has generated revenue of USD 40 generated for the same product by different teams within billion as of 2015 and is projected to reach a market size the company. Thus, all the data for that product are of USD 75 billion by 2022. [2] generated once in a single database and all teams can access such data through a single platform whenever they Globally, many leading companies in aircraft, aerospace need it. and automotive industry, including General Electric, Boeing, Daimler-Chrysler, General Motors, BAE Systems, PLM systems enables data generation, management and Agusta Westland and Lockheed Martin apply PLM association through all processes including requirement solutions. In Turkey, on the other hand, PLM is widely management, design, product identification, Bill of used in by large companies operating in white goods and Material (BOM) management, change management, defense industries. [3] production planning, CAM, equipment and human resources management, project and time management, Advantages of PLM purchasing and procurement and MRO operations. Studies show that a typical engineer spends almost 25- It manages such processes by enabling access by 20% of his or her time in search of part details. Nearly teams to the required data only on a shared database 80% of the works done in an engineering department integrated with other software such as CAD, CAM, CAE, consists of the same and similar works that have been ERP, through management of access authorizations done before. Product data management addresses by following necessary workflows for approval. [4] To these issues by enabling that all data are kept in a single give an example, it manages all data regarding a part location structured with robust and flexible methods and designed in line with a client's request including for which can be searched. [3] requirements the project was created during late stages, its CAD model and technical drawing, purchase orders, for which engine assemblies it is used, CAM program, the machines and tools used for its production, the changes made on it and which client used it for how long etc.

Figure 1. Results of PLM practices [3]

Figure 2. PLM System [5] PLM represents the digital backbone of a company Computers we use everyday can serve as a good example to understand PLM system. In a computer, various PLM at TEI subsystem, each having a different function, such as TEI Design Engineering Directorate used Teamcenter, a power supply, processor, memory, cooling system etc. PLM software by Siemens with nearly 165 licenses. The are combined to serve one specific purpose through a system was put in place in 2010 and has been used for operating system software and enables the user operate many projects to date with many improvements made it through an interface. Likewise, PLM system creates on it since then. Currently, it is mostly used for product an infrastructure for data management between all data management, as it is only available within Design departments of a company, providing employees with an Engineering Directorate. The CAD program used by TEI is interface to access this management system. Besides, integrated with Siemens NX software. 2D and 3D models

17 NEWS ABOUT TEI

developed under Design Engineering Directorate and the technical reports, engineering communication sheets, testing CONTINUED COLLABORATION and installation process and documentation, interface control documents etc. issued under product data management WITH UNIVERSITIES are created on this system and released after following the respective workflow for approval. Engineering change management is also managed through PLM system, enabling traceability among all iterations realized in design process. PLM system, which enables time and cost saving, reduces failure rates and use of time for non-engineering purposes and serves development of TEI's know-how in its activities in line with its vision of "having globally competitive, original power systems", which is highly important also for our country, is used at TEI in a basic sense. We are planning to make it much more efficient by making necessary improvements and integrations. As PLM system is put in place in other operations across TEI, transition to product lifecycle will become possible The Researcher Development Program for Defense in real terms and the system will function as a digital spine. Industries (SAYP) has been launched in 2011 in lead of Undersecretariat for Defense Industries in order to References: establish a more systematic transfer of knowledge [1]https://en.wikipedia.org/wiki/Product_lifecycle between defense companies and universities, and to [2]http://www.prnewswire.com/news-releases/product-lifecycle-management- plm-market---global-industry-analysis-and-forecast-to-2022-for-the-75-billion- ensure that the postgraduate dissertations studies of industry-300109518.html employees from defense companies are structured [3]http://www.makinamagazin.com.tr/haber/urun-yasam-dongusu/3270 so as to support the companies R&D requirements [4]https://www.plm.automation.siemens.com/en_us/products/teamcenter/plm- and focus on the priority areas in the industry. TEI and platform-capabilities/index.shtml several other defense companies executed separate [5]https://en.wikipedia.org/wiki/Product_lifecycle protocols with Anadolu University, Gebze Technical University, Atilim University, Kirikkale University and Uludag University as part of the program. The CONSTRUCTION MAINTENANCE negotiations are also ongoing for execution of a protocol with Sabanci University, Sakarya University, LEADERSHIP NOW ADDRESSES TOBB and Eskisehir Osmangazi University. In addition, OFFICE NEEDS TEI identified the technical subjects than can be addressed with universities under SAYP and shared Construction Maintenance Leadership unit of TEI Facilities & them with SAYP-member universities. Currently, Logistics Services Management has set to work to meet the various project proposals received from several need for office furniture across the company for the first time. universities are under assessment process. To that end, production of some of the furniture to be used in B1000 Advanced Manufacturing Technologies Building, which was inaugurated on September 21, 2016, has been completed. ISTANBUL CUSTOMS OFFICE As the production process goes on, nearly 55% savings have been achieved with the completed furniture. The need for ENTERS INTO SERVICE furniture that arose when TEI Engineering Office in Ankara was TEI Istanbul Customs Office entered into service in the moved to Hacettepe Teknokent has been met by spending second half of 2016 at Turkish Airlines Agencies Block 60% less than expected. Renovation of the apartments in near Atatürk Airport Customs Management, where over the mass housing facilities at TEI Eskisehir Premises is also 90% of customs clearance operation are carried out, to performed by Construction Maintenance Leadership staff. enable performance of customs clearance processes of the company through direct representation. 3 staff members, including one with a license (assistant customs broker), were recruited for the Office which started operations on April 4, 2016. At the same time, TEI Customs Office in Eskisehir started to issue customs declaration forms to support TEI Customs Office in Istanbul so that it can perform customs clearance procedures. TEI Customs Office performs over 40% of customs clearance procedures for import, which provided cost savings for the company in the commission fees paid for customs brokerage.

18 TEI POST

“WE WEAR OUR NEW BUSINESS UNIFORMS WITH PLEASURE AND COMFORT” We have mentioned in our last issue that new business clothes have been designed to ensure that TEI's employees work with comfort and that corporate identity is achieved in an integrated manner. In this issue, you can find the remarks of our employees who are working with their new business clothes.

Halime Ozkaya serving as CNC Kazim Topuz serving as Senior Technician at Manufacturing Technical Leader at Quality Management (Turning): Management:

“We work with comfort thanks to "This is the first time for white-collar cotton and soft texture of our new employees to be provided with corporate business clothes. Our coats well clothes. So, I think it filled a huge gap. protect us from cold weathers. We I show ultimate attention to wear my can use our waistcoats for several T-shirt, sweatshirt and shirt by turns purposes; for example, while we are every other day. These clothes provide a working inside the workshop or while great convenience. I should also say that we go out for a break or lunch. I think designs of the clothes are very pretty, the colors of these designs and the so I wear them with a great pleasure. business clothes are in an excellent What is more, I think they provide great harmony, and I wear them with love." contributions to the corporate culture."

“COMFORT OF USE AND HIGH-QUALITY BECAME OUR KEYWORDS” New business clothes, designed dedicatedly for TEI's employees, bear the signature of SUR CORPORATEWEAR. We have interviewed with Cem Kaprol, General Manager of SUR CORPORATEWEAR, to learn what has happened in the design process of the new business clothes which have been delivered in three months and acclaimed by our white-collar and blue-collar employees.

Which processes have you gone through while What were the other consideration points you designing the clothes dedicatedly for TEI's employees? addressed while designing the clothes? We set off to work by getting to know TEI more closely. As I have said shortly before, we have attached our priority to We examined the clothes of employees, and determined design corporate clothes that fit well the corporate identity. the needs. Then, we prepared a new collection with the But of course, we have considered several things such as inspiration we drew from the corporate identity and logo corporate departments and appropriateness of the clothes of TEI. “Comfort of use" and "high-quality" became our for these departments, as well as the weather conditions, keywords while preparing the collection. We managed geographical location and comfort of employees. to ensure a healthy communication, resulting in a highly pleasant preparation process. How many different clothes were designed for white-collar and blue-collar employees? What were the expectations and priorities of TEI with We have worked on 44 different models for white-collar and respect to the clothes? blue-collar employees of TEI. Cem Kaprol TEI expected us to prepare a comfortable, high-quality and modern collection to emphasize its corporate Are you satisfied with the outcome and the feedback identity without any deviation from this identity. Thanks you get? to the industry-wide confidence we have proved, the size We are quite satisfied with the outcome and the feedback we determination processes were left to our expertise. We get. As we have carried out this project with TEI on mutual came up with these processes with the size samples we have satisfaction basis, we keep on working together on the new prepared together with our expert team. projects.

19 TECHNICAL ARTICLE

COUPLED CFD AND HEAT TRANSFER ANALYSIS FOR A SMALL SCALE GAS TURBINE COMBUSTOR

ABSTRACT Gas turbine combustor design process has significant number of complex design phenomena, one of the most complicated parameters of which is the heat transfer process of combustor liners. Heat transfer studies are performed in preliminary design phase by the help of one-dimensional tools; however, in the detail design phase, use of 3D CFD analysis is required. In that sense, conjugate heat transfer stands out as a powerful but computationally expensive analysis method. On the other hand, coupled analysis of Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD) can provide a quick alternative solution. Coupled analysis offers faster results with lower mesh size, which provides an advantage iterative design process.

In this study, a series of coupled CFD and heat transfer analyses were conducted for a small scale gas turbine combustor, and the results were presented and compared ALTUG PISKIN with relevant rig test thermal paint results. Senior Engineer INTRODUCTION Chief Engineering Office Coordination - TEI Coupled heat transfer analysis is briefly based on AHMET TOPAL sequential analysis between CFD and FEA models. The limit determined in such analyses is solved through Staff Engineer exchange of data between these two models. Near Aerothermal Engineering Management - TEI liner gas temperatures, obtained through CFD analyses is transfered to FEA model to compute liner metal temperatures. The liner metal temperatures computed is resent to CFD model and line wall temperature is defined The article is the summary of the a limit condition. The analysis process is ended depending on the convergence of the metal temperatures monitored research paper numbered GT2016- at certain positions during iterations. 57944 which was presented at "TurboExpo 2016". NUMERICAL ANALYSES Flow chart of the overall analysis process is provided in Figure 1. As it can be understood from this chart, CFD model starts with the definition of a baseline wall temperature for liners. Combustion model is analyzed based on these wall temperatures, and the wall edge gas temperature results are transfered to thermal model. Wall temperatures obtained through analysis of the thermal model is re-converted into CFD model, and this sequential process continues until a convergence is obtained, after which the solution is completed.

20 TEI POST

Table 2 Numerical Results for Thermocouple Positions

Model TK-1 (K) TK-2 (K) TK-3 (K) Hot Spot (K) 1 533.3 610.5 858.7 865.7 2 622.5 718.3 982.1 998.6 3 688.6 793.2 1052.7 1076.9 4 572.7 636.5 746.9 750.2 5 723.6 756.9 794.4 803.0 6 611.3 692.5 927.9 946.2 7 693.0 711.4 733.5 744.3 8 710.0 782 997 1015.6 9 691 749 940 960.0 10 762.1 830.3 1026.1 1055.4

Outer liner temperature distribution for Model-10 is provided in Figure 2. The temperature value points defined here correspond to respective thermocouple positions.

830.3 K

Figure 1. Coupled Analysis Flow Chart

1026.1 K After the computation method is determined, analyses 762.1 K on conductivity, emissivity and gas radiation effects, two different heat transfer correlations and numerical- experimental model comparison and matching were performed for the study. 10 different analyses were Figure 2. Outer Line Temperature Distribution for Model-10 performed to that end. The analysis matrix is provided in Table 1, where cf means heat transfer correction factor, EXPERIMENTAL STUDY hf represents heat flux factor, and ɛ represents the outer surface emissivity of the liner. Liner meal temperatures were measured in TEI atmospheric combustor test rig. Figure 3 shows Table 1 Analysis Matrix the design model of the test part, thermal paint instrumentation on outer liner and a thermal paint-applied Model No. HTC Correlation cf hf ɛ combustor. 1 Channel 0.5 0 0.5 2 Channel 1 0 0.5 3 Channel 1.5 0 0.5 4 Lefebvre 1 0 0.5 5 Lefebvre 1 1 0.5 6 Channel 1 0 0.9 7 Lefebvre 1 1 0.9 8 Channel 1 1 0.5 9 Channel 1 1 0.9 10 Channel 1.7 1 0.9

Matrix on Table 2 shows the analysis results for the models. Figure 3. Test Part and Thermal Paint-Applied Combustor

21 TECHNICAL ARTICLE

Thermal paint results including temperature gradients and Considering the results obtained from Model 10, it was maximum temperature positions as well as Figure 4 for observed that maximum temperature value was nearly the outer liner indicate that outer liner metal temperatures 70 K lower than test results. reach 1123 K. (10) Table 3 Measurement Results for Control Points

TK1 (K) TK2 (K) TK3 (K) Hot Spot (K) TP 763-843 1023-1123 883-1023 ~1123 T/C 812 915 863 - Model-10 762.1 830.3 1026.1 1055.4

Figure 4. Thermal Paint Color Distribution

RESULTS SYMBOLS To summarize, the study focused on the effects of heat CFD Computational Fluid Dynamics surface emissivity and gas radiation based on analysis FEM Finite Element Model results. In addition, it analyzed different heat transfer HTC Heat Transfer Coefficient correlations and finally, results of the coupled analysis was T/P Thermal Paint compared with the test results of a small scale combustor by using the best numerical model. Table 3 shows a T/C Thermocouple comparison of the analysis model (Model 10) through ɛ Emissivity experimental values obtained as a result of the study. Tg Gas Temperature The paint sequence on the table represents the minimum k Thermal Conductivity and maximum temperatures for the color scale obtained as a result of the test. The other sequences indicate cf Correction Factor thermocouple measurements and analysis results. hf Heat Flux Factor

REFERENCES (1) Fitzpatrick, J. N. (2013). “Coupled thermal-fluid analysis with flowpath-cavity interaction in a gas turbine engine.” MSc Thesis, Purdue University. (2) Sun, Z., Chew, J. W. and Hills, N. (2008) “Use of CFD for thermal coupling in aeroengine internal air systems applications.” The 4th International Symposium on Fluid Machinery and Fluid Engineering, NO. 4ISFMFE-IL07. (3) Sun., Z., Chew, J. W. and Hills, N., Volkov, K. N., Barnes, C. J., “Efficient finite element analysis computational fluid dynamics thermal coupling for engineering applications.” Journal of Turbomachinery, JULY 2010, Vol. 132 / 031016-9. (4) Javiya, U., Chew. C., Hills, N., Scanion, T., “Coupled FE-CFD thermal analysis for a cooled turbine disk.” Journal of Mechanical Engineering Science, Part C, Proc. IMechE. (5) Verdicchio, J. A., Chew, J. W., Hills, N. J., (2001) “Coupled fluid solid heat transfer computation for turbine discs.” (6) Sieder, E. N., Tate, G. E. (1936) “Heat Transfer and Pressure Drop of Liquids in Tubes”. Industrial Engineering Chemistry, 28, 1429. (7) Lefebvre, A. H., (1998) “Gas turbine combustion.”, Taylor & Francis, 2nd Edition. (8) Poinsot T., Wolf P., Staffelbach G., Gicquel L.Y.M., Muller J.D. (2011) “Identification of azimuthal modes in annular combustion chambers.”, Center for Turbulence Research Annual Research Briefs. (9) Kadoya, K., Matsunaga, N., Nagashima, A., (1985) “Viscosity and thermal conductivity of dry air in the gaseous air.”, Keio University, Department of Mechanical Engineering. (10) Topal, A., Catori, C., Cagan, L., Uslu, S., Turan, O., Piskin, A., (2014). “One dimensional heat transfer analysis and experimental investigation of a gas turbine combustor.”, International Symposium on Convective Heat and Mass Transfer. (11) C.Bates, Stephen, (1997). “High Temperature Transparent Furnace Development”, NASA Technical Reports.

22 TEI POST

AERODYNAMIC OPTIMIZATION OF A TRANSONIC FAN BLADE

ABSTRACT This study aims to obtain the optimum aerodynamic axial symmetric design of a transonic aero-engine fan blade and flow path. Angle distribution and fan bypass field flow path geometry is optimized using genetic algorithm principle, which is an optimization method inspired by evolutionary processes. A 2D axial-symmetric design tool and optimization software, developed by TEI employees, are used for the study.

INTRODUCTION Quasi three-dimensional through-flow modeling (Figure 1) is one of the most critical steps in of turbomachinery design. Using detailed 3D analysis models, the design is only possible by trial-and-error, and takes much longer time, whilst 2D axial-symmetric methods enable direct and fast designs.

An axisymmetric solver includes two components. The first component consists of a solver which works in axis-symmetric swirl mode (in the present study, the streamline-curvature method). The second component comprises theoretical and experimental correlations taking DR. ORCUN KOR into account the local pressure, temperature and swirl- Lead Engineer increasing/decreasing effects of 3D blades on the said Aerothermal Engineering Management - TEI 2D (quasi 3D) rotational flow. To estimate these effects, results of the experiments performed on standardized ASSIST. PROF. SERCAN ACARER 2D blade cascades are used and the code verification is demonstrated in references [Acarer, Ozkol, 2016]. Izmir Katip Celebi University

ASSIST. PROF. UNVER OZKOL Izmir Institute of Technology

This article is a summary of the research paper presented at "National Aerospace Figure 1. Two-dimensional Modeling of Turbomachinery Flow Conference 2016". Optimization of aerodynamic objective functions such as efficiency, standard deviation of total pressure distribution etc. is essential in 2D axisymmetric design stage. This study focuses on optimization of these quantities.

23 TECHNICAL ARTICLE

The problem addressed by the 2D axisymmetric flow IMPLEMENTATION solver, which constitutes the subject of this study, consists Genetic algorithm (GA) is used as the optimization method of high order, non-linear set of equations. The suggested in this study. Operating principles of GA are available in mathematical model is non-differentiable in local points the references in detail [Kor, 2016]. Tournament method is since it has many singularities. Therefore, gradient- used as selection mechanism in genetic algorithm. Design based methods cannot provide an optimum global result variables are represented with chromosomes, and a 4 [Rao, 1996], [Verstraete, 2012]. On the other hand, the point crossover operation is implemented while creating genetic algorithm method, which imitates the evolutionary new designs. Mutation rate is determined as 1% as processes, is observed to provide significant objective recommended in the literature [Verstraete, 2012]. function improvements in many aerodynamic optimization studies [Shahpar, 2000], [Joly, Verstraete and Paniagua, 2010]. Generic engine geometry addressed in the study is provided in Figure 2. In optimization process, the tip region of fan flow path, hub region of the bypass area To the authors’ best knowledge, the available literature and twist factor are modified with genetic algorithm lacks a study on aerodynamic design optimization of principle, and the objective function given in Equation turbofan blades and bypass region. This study aims to (2) is minimized. In equation (2) w1 and w2 are weight shed light on this untouched area in the literature. factors which are taken as 0.5. η represents fan isentropic efficiency and it is tried to be maximized; and , SYMBOLS represents the normalized value of the standard deviation of total pressure distribution at section B, which is tried to TF Twist factor be minimized. Fq Blade force on quasi-orthagonals (N) H Total enthalpy (kJ/kg) (2) Km Streamline curvature (1/m) m Flow direction o Design Variables P Pressure Figure 2 shows the control points of the Bézier curves q Quasi-orthagonal direction constituting the fan flow path, which take different values Angle between quasi-orthagonal and streamline (o) during optimization. Another design parameter is twist r radius (m) factor (TF), which plays a critical role in axisymmetric s Entropy (kJ/kg K) design. This parameter defines span-wise tangential Vm Meridional velocity (m/s) velocity distribution of the flow leaving the blade. The angle between the tangential velocity component and Vθ Tangential velocity (m/s) engine axis, on the other hand, gives the blade's flow w Weight factor angle at that point. The formulation of speed distribution is T Temperature (K) given in Equation (3). η Efficiency

METHODOLOGY (3) The 2D axial-symmetric design tool is described by Acarer and Özkol (2016) in detail. Full radial equilibrium equation The term in equation (3) represents the (Equation (1)) is solved by means of 2D axisymmetric tangential velocity value at meanline ( ). This design tool. quantity is derived from one-dimensional thermodynamic cycle analysis and it is assumed to be known in this study. (1)

TF - Twist Factor

The software is based on inverse design: tangential

velocity (Vθ) distribution at the trailing edge of the blade

is provided as input and the corresponding flow field is B solved. Losses for compressible and incompressible flow regimes are modeled by means of correlations. By this mean, results that are compatible with the actual physics A of the flow can be accurately demonstrated.

Figure 2. Generic Turbofan Geometry and Design Parameters

24 TEI POST

Design variables (geometric parameters) are allowed to CONCLUSION take values within the space restricted by the dashed Aerodynamic design of a generic turbofan engine’s fan line. No changes are made on solid lines provided in module is performed and optimized to provide optimum Figure 4. The twist factor is modified within the range of aerodynamic performance by using the design and . optimization tool developed by TEI. The objective function improved by 4.5% as a result of the optimization process. Outputs Computations are stopped at 13th generation due REFERENCES to time restriction. Figure 3 shows the normalized Acarer, S., Ozkol, U., 2016, An Extension of the Streamline Curvature objective function values of the optimum design for each Through-Flow Design Method for Bypass Fans of Turbofan Engines, generation. The formula for the normalized objective Proc IMechE Part G: Journal of Aerospace Engineering, pp.1-14. Aungier, R. H., 2003, Axial Flow Compressors: A Strategy for function is as follows: Aerodynamic Design and Analysis, ASME Press. Boyer, K. M., 2001, An Improved Streamline Curvature Approach for (4) Off-Design Analysis of Transonic Compression Systems. Dissertation, Virginia Polytechhnic Institute and State University, ABD. Bullock, R. ve Johnsen, I., 1965, Aerodynamic Design of Axial Flow Compressors, NASA SP-36. Creveling, H., 1968, Axial-Flow Compressor Computer Program for Calculating Off-Design Performance, NASA CR-72472. Cetin, M., Ucer, A. S., Hirsch, C., and Serovy, G. K., 1987, Application of Modified Loss and Deviation Correlations to Transonic Axial Compressors, AGARD R-745. Joly, M.,Verstraete, T., Paniagua, G., 2010, Attenuatıon Of Vane Dıstortıon In A Transonıc Turbıne Usıng Optımızatıon Strategıes, Part I – Methodology, ASME TurboExpo, Glasgow, United Kingdom, July 14-18. Joly, M.,Verstraete, T., Paniagua, G., 2012, Full Design Of A Highly Loaded Fan By Multi-Objective Optimization Of Throughflow And High-Fidelity Aero-Mechanical Performances, ASME TurboExpo, Copenhagen, Denmark, July 11-15. Kleppler, J., 1998, Technique to Predict Stage-by-Stage, Pre-Stall Compressor Performance Characteristics Using a Streamline Curvature Code with Loss and Deviation Correlations, Dissertation, University of Tennessee, USA. Koch, C., and Smith, L., 1976, Loss Sources and Magnitudes in Axial- Flow Compressors, J. Eng. for Power, Volume. 98(3), pp. 411-424. Kor, O., 2016, Aerodynamic Optimization of a Transonic Aero-Engine Figure 3. Improvement through Generations by Genetic Algorithm Fan Module, Dissertation, Izmir Institue of Technology, Turkey. Lieblein, S., 1960, Incidence and Deviation-Angle Correlations for Figure 3 shows that normalized objective function is Compressor Cascades, Trans ASME Journal of Basic Engineering, improved by 4.5% through the generations. Constraint Volume 82, pp. 575-87. functions are kept within range of predetermined limits Miller, G., Lewis Jr., G., and Hartmann, M., 1961, Shock Losses in during the optimization period. Figure 4 shows the Transonic Compressor Blade Rows, J. Eng. for Power, Volume. 83(3), pp. 235-241. optimum flowpath for the generic turbofan geometry, Pachidis, V., 2006, Gas Turbine Advanced Performance Simulation, which is obtained at the end of optimization. Dissertation, University of Cranfield, United Kingdom. Petrovic, M., Wiedermann, A., and Banjac, M., 2009, Development and Validation of a New Universal Through Flow Method for Axial Compressors, ASME Turbo Expo, Orlando, USA, June 8-12. Petrovic, M.V., Dulikravich, G.S., Martin, T.J., 2000, Optimization of Multistage Turbines Using a Throughflow Code, ASME TurboExpo, Munich, Germany, May 8-11. Rao, S., 1996, Engineering optimization, theory and practice, John Wiley and Sons Inc., New York. Shahpar S., 2000, A comparative study of optimization methods or aerodynamic design of turbomachinery blades, ASME TurboExpo, Munich, Germany, May 8-11. Sullivan, T. J., Younghans, J. L., and Little, D. R., 1976, Single Stage, Low Noise Advanced Technology Fan. Volume 1: Aerodynamic Design, NASA CR-134801. Figure 4. Optimum Geometry Verstraete T., 2012, Introduction to optimization and multidisciplinary design in aeronatics and turbomachinery, von Karman Institute for Fluid Dynamics Course Book Series. - Rhode St. Genése, Belgium. Wennerstrom, A. J., 2001, Design of Highly Loaded Axial-Flow Fans or Compressors, Concepts Eti.

25 NEWS İŞABOUT SAĞLIĞI THE VEAVIATION GÜVENLİĞİ INDUSTRY AEROSPACE PROPULSION HIGHLIGHTS OF 2016

The article which have been published on Aviation Week & Space Technology Magazine on Dec, 2016 by Graham Warwick.

Aircraft propulsion advanced across a range of fronts in 2016, from entry into service of Pratt & Whitney’s geared turbofan to progress on distributed and hybrid-electric electric powerplants and supersonic-combustion ramjets.

GTF Photo: Airbus Pratt & Whitney’s geared turbofan entered service on the PW1100G-powered Airbus A320neo in January, the year also saw the first flight of the PW1900G-powered Embraer E190-2 in May, rollout of the PW1400G-powered Irkut MC-21 in June and entry into service of the PW1500G-powered Bombardier C Series in July.

Photo: Lufthansa

LEAP CFM International’s Leap 1A turbofan powered the reengined AirbusA321neo on its first flight on Feb. 9 and entered airline service on the A320neo in July. Boeing’s 737 MAX entered flight testing in January powered by the Leap 1B.

26 TEI POST

Illustration: U.S. Air Force Concept X-57 NASA’s distributed electric propulsion flight demonstrator was given the X-plane designation X-57 and named the Maxwell in June. Modification of the Tecnam P2006T piston twin to demonstrate electric propulsion is under way and first flight is planned by 2018.

Illustration: NASA B-21 In March, Pratt & Whitney was named as a key supplier on the Northrop Grumman team developing the U.S. Air Force’s B-21 Raider, but the engine selected to power the stealthy long-range strike bomber has not been identified.

Illustration: Airbus

AETP General Electric and Pratt & Whitney were awarded $1 billion in U.S. Air Force contracts in July to build and ground-test 45,000-lb.-thrust-class variable- cycle combat engines beginning in 2019 under the Airbus Siemens Adaptive Engine Transition Program. Airbus and Siemens signed a long-term agreement in April to collaborate with the goal of demonstrating by 2020 the feasibility of hybrid-electric propulsion for commercial aircraft with fewer than 100 seats that could enter service by 2030.

Illustration: GE Aviation

Photo: GE Aviation E-Fan Airbus Group debuted its E-Fan electric aircraft demonstrator in a hybrid configuration at the EAA AirVenture show in Oshkosh, Wisconsin, in July. Endurance is increased from 30 min. on batteries to 2 hr., 15 min. using a 68-hp. two-cylinder, two-stroke piston engine as a range extender.

Photo: Airbus Group

KF-X General Electric’s F414 afterburning turbofan was selected in May to power South Korea’s next-generation indigenous fighter, KF-X. Under development by Korea Aerospace Industries, with partner Lockheed Martin, KF-X is scheduled to enter service in 2026.

27 NEWS İŞABOUT SAĞLIĞI THE VEAVIATION GÜVENLİĞİ INDUSTRY

Photo: Solar Impulse Silvercrest Textron Aviation in November confirmed that the Safran Silvercrest turbofan will power the Cessna Citation Hemisphere large business jet, which is scheduled to fly in 2019. The Silvercrest is in development to power Dassault’s large-cabin Falcon 5X, now planned to fly in 2018.

Photo: Textron Aviation

Solar Impulse 2 Solar Impulse 2 landed in Abu Dhabi on July 26, completing the solar-powered round-the-world flight. Begun in March 2015, the 17 legs flown by solo pilots Bertrand Piccard and Andre Borschberg totaled 23 days and 43,041 km (23,240 nm).

ITEP GE ATP In August, General General Electric’s Advanced Turboprop, selected to Electric and a power the Cessna Denali, will incorporate the most Honeywell/Pratt & additively manufactured parts of any engine so far— Whitney joint venture 12 3-D-printed parts will replace 855 conventionally received contracts made components, cutting weight by 5% and worth $102 million improving specific fuel consumption by 1%. and $154 million, Illustration: GE Aviation respectively, to take competing 3,000-shp turboshafts to a preliminary design review early in 2018 under the U.S. Army’s Improved Turbine Engine Program to reengine UH-60 Black Hawks and AH-64 Apaches.

Illustration: Advanced Turbine Engine Co.

Vahana Illustration: DARPA Airbus Group’s Silicon Valley outpost A3 in October unveiled the self-piloted, single-passenger air-taxi concept it is developing under Project Vahana. A full- size prototype of the electric-powered vertical-takeoff- and-landing aircraft is to fly at the end of 2017.

Illustration: Airbus Group HAWC Lockheed Martin and Raytheon in November won DARPA contracts to demonstrate scramjet-powered, hydrocarbon-fueled, air-launched high-speed strike missiles. The Hypersonic Air-breathing Weapons Concept program follows on from the X-51 scramjet engine demonstrator. Flight tests are expected in 2019.

28 TEI POST COMMERCIAL AVIATION 2016 HIGHLIGHTS

The article which have been published on Aviation Week & Space Technology Magazine on Dec, 2016 by Graham Warwick.

With entry into service of the Airbus A320neo, Bombardier C Series and Comac ARJ21, first flights of the Boeing 737 MAX and Embraer E190-E2, and rollout of the MC-21, 2016 has been a year of progress for commercial aviation.

A320neo 737 MAX

After an eleventh-hour change of launch operator, Reengined with CFM International’s Leap-1B turbofan, the reengined Airbus A320neo entered service Boeing’s reengined 737 MAX flew for the first time on with Lufthansa in January, powered by the Pratt Jan. 29. The initial 737-8 variant could enter service & Whitney PW1100G geared turboban. The CFM with launch customer Southwest Airlines as early as International Leap 1A-powered version followed into March 2017, instead of the third quarter as originally airline service in June. The A321neo, meanwhile, scheduled. entered flight testing in February.

Photo: Airbus Photo: Boeing

U.S. Airbus

The first Airbus produced in the U.S., an A321 for JetBlue Airways, made its flight from the Mobile, Alabama, final-assembly plant on March 21. The aircraft entered service in April. The Mobile facility opened in September 2015, joining A320 assembly lines in Hamburg, Toulouse and Tianjin, China. Photo: Airbus

29 NEWS ABOUT THE AVIATION INDUSTRY

Photo: United Airlines Biofuels

United Airlines began the first commercial-scale use of biofuel on regular scheduled flights in May, using synthetic kerosene supplied to Los Angeles International Airport by AltAir Fuels under a three-year contract to purchase up to 15 million gal. of jet fuel made from tallow.

E190-E2 ARJ21

Embraer flew the E190-E2 on May 23. It is the first of Photo: Comac the Brazilian manufacturer’s second-generation E-Jet E2 large regional airliner family. The E190-E2 has a new wing with higher aspect ratio for lower drag, Pratt & Whitney PW1900G geared turbofans and full-time fly-by-wire flight controls.

Photo: Embraer

Comac’s AR21-700 entered service in June with Chengdu Airlines, a subsidiary of the Chinese aircraft manufacturer, 14 years after development was launched and 18 months after the Civil Aviation Administration of China certified the type.

MC-21 CS100

The first of Bombardier’s C Series family, the Photo: United Aircraft Corp. CS100, entered service with launch customer Swiss International Air Lines in July. The milestone followed an April order from Delta Air Lines for 75 CS100s, plus 50 options. In June, Air Canada finalized an order for 45 firm and 30 option CS300s.

Photo: Bombardier

Russia’s MC-21 narrowbody airliner was rolled out by United Aircraft Corp. company Irkut on June 8. The baseline 211-seat MC-21-300 is expected to fly early in 2017, powered by Pratt & Whitney PW1400G geared turbofans. The aircraft is scheduled to enter service with Aeroflot at the end of 2018.

30 TEI POST

LRWBCA ICAO

China and Russia signed an intergovernmental agreement in July to codevelop the Long-Range WideBody Commercial Aircraft. Comac and United Aircraft Corp. plan to develop the 280-seat, 7,500-nm-range twinjet for entry into service in 2027. Final assembly will take place in Shanghai.

Photo: United Aircraft Corp.

Photo: joepriesaviation.net

In October, 191 member states of the International Civil Aviation Organization reached agreement on a carbon offsetting scheme scheduled to take effect in 2021; participation will be voluntary initially. The plan is expected to enable carbon-neutral growth in international flights beginning around 2024.

Iran A350

The U.S. government In September granted Airbus Photo: Airbus and Boeing licenses to export commercial aircraft to Iran, after that nation reached agreement in 2015 with the U.S. and other countries about its nuclear program. Iran Air signed agreements for 118 Airbus A320s, A330s, A350s and A380s and 109 Boeing 737s and 777s.

Photo: Konstantin von Wedelstaedt

The second member of Airbus’s A350 family, the stretched 360-seat A350-1000, made its first flight from Toulouse on Nov. 24. First delivery to launch customer Qatar Airways is planned at the end of 2017.

CS300 Fotoğraf: Bombardier

The first Bombardier CS300 was delivered to launch customer AirBaltic in Latvia on Nov. 30., with commercial service planned to begin in December with Riga-Amsterdam flights. The airline has ordered 20 of the 145-seat aircraft.

31 NEWS ABOUT OUR EMPLOYEES

NEW ASSIGNMENTS IN OUR COMPANY BETWEEN JULY 1ST, 2016 - DECEMBER 31ST, 2016

Murat Ilker Celik Suha Toprak Ercan Buyukkara Pinar Gunaydin was assigned to serve was assigned to serve was assigned to serve was assigned to serve as as AIT & MRO Director at as Electrical, Electronic as Plant Maintenance Maintenance, Repair and Head Office on November Control and Embedded Manager at Plant Overhaul (MRO) Manager 18, 2016; Systems Manager at Maintenance Management at Maintenance, Repair Electrical, Electronic on December 12, 2016; and Overhaul (MRO) Control and Embedded Management on December Systems Management on 12, 2016; December 12, 2016;

32 TEI POST

Bekir Ercil Ahmet Dogru Burak Camurlu Ercan Arican was assigned to serve was assigned to serve as was assigned to serve was assigned to serve as as Senior Construction Machine Shop Supervisor as Senior Manufacturing Senior Engine Design Tool Maintenance Leader at at Manufacturing Technical Leader Development Technical Construction Maintenance Management (Milling) on at Manufacturing Leader at Engine Design Leadership on August 15, October 27, 2016; Management (Milling) on Tool Development Team 2016; October 27, 2016; Leadership on December Ilker Yucel 08, 2016; Mustafa Kemal Baldoktu was assigned to serve as Ugur Tuzemen was assigned to serve as Machine Shop Supervisor was assigned to serve as Ozgur Unsar Senior Social Affairs Leader at Manufacturing Manufacturing Technical was assigned to serve at Social Affairs Leadership Management (Milling) on Leader at Manufacturing as Senior Electrical & on September 07, 2016; October 27, 2016; Management (Milling) on Electronics Technical October 27, 2016; Leader at Electrical, Mustafa Kemal Gulec Adem Goz Electronic Control and was assigned to serve as was assigned to serve as Koray Aydin Embedded Systems Machine Shop Supervisor Machine Shop Supervisor was assigned to serve as Management on December at Manufacturing at Manufacturing Manufacturing Technical 12, 2016; Management (Turning) on Management (Milling) on Leader at Manufacturing October 27, 2016; October 27, 2016; Management (Milling) on Tugce Akcoral October 27, 2016; was assigned to serve Coskun Demirel Levent Inal as (deputy for) Senior was assigned to serve as was assigned to serve Ozkan Erkoca Stationary Parts Stress Machine Shop Supervisor as Senior Manufacturing was assigned to serve as & Lifecycle Calculations at Manufacturing Technical Leader Tool Room Supervisor at Technical Leader at Management (Turning) on at Manufacturing Manufacturing Engineering Structural Engineering October 27, 2016; Management (Turning) on Management on October Management on December October 27, 2016; 27, 2016; 12, 2016. Ender Orpay was assigned to serve as Ihsan Onal Murat Sezer Machine Shop Supervisor was assigned to serve was assigned to serve at Manufacturing as Senior Manufacturing as Quality Control Shop We wish them Management (Fabrication) Technical Leader Supervisor at Quality success in their on October 27, 2016; at Manufacturing Management on October Management (Turning) on 27, 2016; new positions. Ridvan Abbasoglu October 27, 2016; was assigned to serve as Machine Shop Supervisor Tolga Ozgonul at Manufacturing was assigned to serve Management (Fabrication) as Senior Manufacturing on October 27, 2016; Technical Leader at Manufacturing Cem Oden Management (Fabrication) was assigned to serve as on October 27, 2016; Machine Shop Supervisor at Manufacturing Caner Cevher Management (Fabrication) was assigned to serve on October 27, 2016; as Senior Manufacturing Technical Leader Selim Karaca at Manufacturing was assigned to serve as Management (Fabrication) Machine Shop Supervisor on October 27, 2016; at Manufacturing Management (Milling) on October 27, 2016;

33 NEWS ABOUT OUR EMPLOYEES

STATISTICS ON TEI'S EMPLOYEES Breakdown of our staff consisting of more than 1700 members as of December 31, 2016:

Breakdown of White-Collar and Blue-Collar Employees 41% 59% White-collar Blue-collar

2% 6% By Title Groups 28%

58% 6% Engineer Technician Executive Specialist Other

1% 1% By Educational Status 8% 26% Doctorate Two-Year Primary 43% Degree School 19% 2% Master's Technical Degree School Bachelor's High School Degree

14% 15% By Age Group

42% 29% Age 18-25 Age 25-30 Age 30-40 Over 40

8% By Gender

92% Male Woman

34 VISITORS

As always, our company received frequent visits by various organizations throughout the year and we hosted many guests during the visits from July 2016 to the end of year.

JULY 28, 2016 Visit by Ataturk Vocational and Technical AUGUST 02, 2016 Anatolian High School Teachers Visit by Kursat Atilgan, President of Turkish Aeronautical Association

SEPTEMBER 01, 2016 SEPTEMBER 06, 2016 Visit by Dr. Cihan Kanligoz, Director General of Aeronautics and Space Technologies- Ministry Visit by Metin Guler, Chairman of of Transport, Maritime Affairs and Communications Eskisehir Chamber of Commerce

34 35 VISITORS

SEPTEMBER 27, 2016 NOVEMBER 03, 2016 Visit by R&D Society of Students, Visit by the Trainees, European Turkish Business Kirikkale University Development Centre (ABIGEM-Eskisehir)

NOVEMBER 02, 2016

Visit by Sabiha Gokcen Vocational and Technical Anatolian High School Trainees

NOVEMBER 15, 2016

Visit by the R&D and Coordination Club, Yıldırım Beyazit University

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NOVEMBER 22, 2016

Visit by the Mechanical Engineering Society, Bilkent University

DECEMBER 06, 2016

Visit by the Nanotechnology and Innovation Club, Erciyes University

DECEMBER 13, 2016

Visit by the Young Engineers Society, Uludag University

37 EXHIBITIONSİŞ SAĞLIĞI AND VE ORGANIZATIONS GÜVENLİĞİ

EXHIBITIONS ATTENDED BY TEI JET-POWER MESSE 2016 TEI opened a booth at the Jet-Power Messe fair held in Bad Neuenahr-Ahrweiler, Germany between September 16-18, displaying integration of the TJ90 engine with TEI platform, which attracted a great deal of attention among visitors.

FARNBOROUGH INTERNATIONAL AIRSHOW (FIA) TEI attended Farnborough International Airshow organized in the United Kingdom on July 11-17, 2016.

ISTANBUL AIRSHOW TEI attended Istanbul Airshow, which was held at Istanbul Ataturk Airport General Aviation Apron on October 6-9. Ahmet Arslan, Minister of Transport, Maritime Affairs and Communication visited the TEI booth on the opening day of the event.

INDUSTRIAL COOPERATION DAYS IN DEFENSE AND AEROSPACE (ICDDA) TEI opened a booth and gave a presentation at the Industrial Cooperation Days in Defense and Aerospace held in Congresium, Ankara on October 11-13. Turgut HIGH-TECH PORT Cicek, TEI Quality and Manufacturing Engineering Director, TEI opened a booth at High-Tech Port 2016, which gave the presentation on "Advanced Manufacturing was held at CNR EXPO Fair Center on November Technologies and Supplier Practices at TEI", which 9-12. Fikri Isik, Minister of National Defense, visited attracted the attention of the audience. TEI's booth at the event.

38 TEI POST

ORGANIZATIONS ATTENDED BY TEI

12th INTERNATIONAL CONFERENCE ON HEAT TRANSFER, FLUID MECHANICS AND THERMODYNAMICS TEI attended the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics held in Spain on July 11-13, 2016. Sinan Inanli, Staff Engineer at Design Engineering Directorate of TEI, presented two papers on gas turbine combustor cooling technologies at the event.

R&D CENTERS MEETING The Eskisehir leg of the country-wide promotional activities launched by the Ministry of Science, Industry and Technology in order to inform the companies about the incentives for R&D and Design activities and enable the companies that have the potential to become an R&D and Design Center to benefit from such incentives, was held in October 6, 2016. Semih Pilatin, Technology Programs Manager and R&D Center Supervisor at THE 8th DEFENSE TECHNOLOGIES CONGRESS TEI, gave a presentation at the organization about the (SAVTEK 2016) advantages TEI has gain for being an R&D Center and the development and activities of the TEI R&D Center TEI opened a booth at the "8th Defense Technologies over the years. Congress -SAVTEK 2016" held at METU Culture and Congress Center between October 12-14 under the collaboration of the Ministry of Defense, Undersecretariat for Defense Industries, METU and SASAD. In addition, Bilkay Gulacti, Structural Engineering Manager at TEI, gave a speech during the Innovation and Technology Management in Defense panel at the organization.

THE 7th DEFENSE INDUSTRY DAYS AT YILDIZ TECHNICAL UNIVERSITY

The 7th Defense Industry Days was organized by Yildiz Technical University Mechanical Technologies Club at the Auditorium and Exhibition Hall at Yildiz Campus of Yildiz Technical METU CAREER DAYS University on November TEI attended the Career Days at the Middle East 21-22. Mustafa Tuksal, Technical University on November 3-4 and answered the TEI Istanbul Engineering students' questions. Office Manager, Alper Unsan, Technical Leader at Programs Directorate, and ISKUR EMPLOYMENT AND CAREER DAYS Emin Tuzlu, Technical Leader TEI attended the Employment and Career Days at Piston Engines Design organized by the Provincial Directorate of Turkish Management gave a speech Employment Agency (ISKUR) in Eskisehir on November at the event. 23, 2016.

39 ENVIRONMENTAL AND OCCUPATIONAL SAFETY

MONITORING OF WORKING ENVIRONMENT AND ASSESSMENT OF RISKS

Occupational risks that employees might be exposed to at workplace are classified as physical, chemical, biological and psychosocial risks. Risk factors in these groups form the basis of the occupational health and safety issues.

he most common physical factors that might factors also cause burden of stress on the employees. expose employees working at a workplace Monitoring of working environment is one of the primary to occupational risks include noise, vibration, actions taken to identify occupational risk factors and thermal comfort, lighting, radiation and pressure. eliminate or mitigate such risks as much as possible. T Intake of chemicals through inhalation, absorption Monitoring of working environment play an essential role in (through skin and eyes) or digestion has direct impacts on prevention of occupational accidents and diseases because human health as well as occupational safety. Some of these risks and hazards existing in working environment changes impacts include flare, explosion, oxidation and fire. constantly, causing occurrence of new health and safety issues. For this reason, working environments must be In the third group, the biological risk factors; monitored constantly in a systematic and consistent way. microorganisms, cell cultures and human parasites that might cause diseases, allergies or poisoning are addressed; Environmental measurement and monitoring and people fight against those factors for protection. The impacts of the work done and working environment Occupational health focus on providing, maintaining and on the employee are documented with environmental developing the best physical, mental and social conditions measurements; and all occupational health and safety at the workplace for employees. Accordingly, psychosocial actions taken to eliminate the negative impact, if any, factors are taken into account as the last group of are taken under the scope of environmental monitoring, risk factors in occupational health and safety. Among which constitute the first step. Risks are identified based psychosocial factors, stress takes the lead as one of the on monitoring results and identified risks are eliminated primary issues of our time. Interaction and relationships or mitigated by providing a safe working environment. between coworkers, routine and repetitive works, Workplace monitoring and measurements can be organizational factors, physico-chemical and biological risk conducted for four risk factor groups.

40 TEI POST

Physical surveillance: It is assessment of the suitability such as prevention and control at source, replacement of the equipment and instruments for all employees in a of the hazardous with non-hazardous and isolation can workplace. Accordingly, environmental measurements be used. Considering that such methods may not be (lighting, noise, dust, chemicals, vibration, thermal sufficient or applicable from time to time, use of personal comforts etc.) as well as technical checks (for lifting protection equipment may be considered in addition to devices, pressure vessels, electrical grounding and these safeguards. lightning arresters etc.) are performed periodically at the workplace. Actions taken at TEI All these actions were taken effectively across TEI Chemical surveillance: The chemicals (dust, gas and in 2016. Implications of these risk factors in working solvents) present in the workplace and the exposure environment were examined, and corrective and areas are identified. remedial actions were taken in several areas, including improvements in machine protectors, strict compliance Health surveillance: Employees undergo various types with the procedures specified in explosion protection of medical examinations (recruitment examination, documents, fireproofing chemical store areas and periodical examinations, return-to-work examination, cabinets, reinforcing shelves and other structural general check-up etc.). Suitability of work and elements, installation of local ventilation system environment for the employee is monitored constantly. and construction of battery charging station etc. Several departments, notably TEI Plant Maintenance Psychosocial surveillance: It can make sense when Management allocated time and human resources to combined with the data obtained from health monitoring. increase Occupational Health and Safety with these actions. These dedicated efforts were monitored and The hazards identified through workplace monitoring recorded also through the audits performed by the (mechanical, physical, chemical, biological, electrical, fire, Ministry of Labor and Social Security. We believe that psycho-social, organizational etc.) are prepared as risk our two projects, the "Ergonomic Improvement Project" assessment by using various techniques, and actions, and "Safe Work at Height Project" which were launched responsible persons and deadlines are determined for in 2016 and will continue this year, as well as the new mitigations of estimated risks. While selecting the actions projects included in our 2017 agenda will make significant to be taken, it is important to give priority to collective contributions to realize our vision of "zero occupational protection measures over personal protection. Methods accident and zero occupational disease".

41 EVENTS

CORPORATE GOALS SHARED AT YEAR-END ASSESSMENT MEETING

Year-end Assessment Meeting 2016 was held on Gunes from Quality Management; Fadil Yetim from December 2016 at TEI Social Facilities Building. TEI NDT and Special Process Quality Management and President and CEO Prof. Mahmut F. Aksit assessed TEI's Serdar Kesinkaya from Manufacturing (Fabrication) performance in 2016 and goals for 2017. Management were presented an achievement plaque. Subsequently, Emre Taskin, the winner of the High-performers recognized "Executive Outstanding Achievement Award" with his At the ceremony, Suggestion Award Champions Engin project "Workshop Dynamic Flow/Machine Monitoring Eden and Mehmet Ali Cal from Manufacturing (Milling) System", was presented an achievement certificate. Management were presented with a plaque and their The Robotic Marking Project, Chip Recycling name plates were attached to the recognition board. Project, DP 34 Engine Project and DP 34 Engine Then, the winners of the "Suggestion Achievement Testing Project were also granted "Executive Project Award 2016", Alpay Alparslan, Yasin Ince and Yusuf Outstanding Achievement Award".

Our President and CEO Prof. Mahmut F. Aksit thanked TEI personnel for their contributions in 2016 and presented flowers to Employee Representative Nuri Ay for all employees.

42 TEI POST

DESIGN ENGINEERING DIRECTORATE YEAR-END ASSESSMENT MEETING

Design Engineering Directorate (TMD) held a Year-End Assessment Meeting at TEI Social Facilities Building on December 20. All TMD personnel as well as HR Director K. Levent Tufekci, Programs Director M. Levent Senel and AIT & MRO Director Murat Ilker Celik attended the meeting, which was chaired by Design Engineering Director Ali Osman Ayhan.

Ayhan assessed 2016 and shared the targets for 2017 at the meeting. After his speech, representatives of all managements reporting to TMD gave a presentation on their activities. The session continued with complimentary food and drink service before the activities of TMD Social, Communication and Volunteers Committee were presented. An award ceremony was held after the presentations and INDUSTRIAL SECURITY LEADERSHIP the meeting was closed with a quiz show. CELEBRATES SUCCESSFUL AUDIT RESULTS

Upon completion of the audits conducted by the Ministry of Labor and Social Security successfully, TEI TABLE TENNIS TOURNAMENT TEI celebrated its successful results with an event CHAMPION ANNOUNCED organized by the Industrial Security Leadership.

COMMEMORATIVE TICKETS ON SALE TO SUPPORT ESKISEHIRSPOR

The tickets issued to commemorate the game Eskisehirshor played against Giresunspor behind TEI Table Tennis Tournament, organized by Turgut Alptekin, closed doors on October 16 were sold at TEI Social Quality Assurance Technical Support Specialist witnessed Facilities Building on October 13-14. a pleasant and fierce completion. The tournament started on October 10; and 21 teams and 44 players competed in 128 games in total.

The final day of the tournament on November 21 started with the All Stars game played by our President and CEO Prof. Mahmut F. Aksit, HR Director K. Levent Tufekci, Manufacturing Director Murat Karamahmutoglu and R&D Director Ali Osman Ayhan. It was followed by the final game, and finally the championship cup was presented to the winning team's players Ali Guler, Emre Aktas and Mustafa Babacan.

43 İŞ SAĞLIĞIEVENTS VE GÜVENLİĞİ

FUN FOR ALL AT TEI PICNIC TEI arranged an outdoor picnic organization on September 4, 2016 with the attendance of nearly 5 thousand people including all TEI staff and their family members. Attendants enjoyed different varieties of complimentary food and beverages and had fun with the animators and jumping castles during the event. In addition, champions of the Traditional TEI Spring Tournament, which was held between May 1 and June 5, 2016, received their cups and gifts with a short ceremony during the picnic.

44 TEI POST

45 SOCIAL RESPONSIBILITY TEI INTELLIGENCE WORKSHOPS KEEPS GROWING IN CIRCLES

The 3rd Intelligence Workshop, a project launched by TEI in early 2016, has recently been held at Adalet Primary School. Adalet Primary School develops training programs for gifted children and also plans to file an application with European Council for High Ability (ECHA) for accreditation; and TEI has organized the Intelligence Workshop to support its initiatives.

Intelligence Workshop started with a high attendance rate The Intelligence Workshop is organized with the voluntary contributions of TEI employees; and Hasan Basyigit, District Director for National Education in Odunpazari, Eskisehir, Ozden Akkaya, Assistant Provincial Director for National Education, Duygu Gokduman Pilatin, Corporate Communications Consultant at TEI, Mehmet Karababa, Legal Advisor at TEI, Necdet Odaci, Headmaster of Adalet Primary School as well as TEI volunteers and administrator and teachers affiliated with the Directorate of National Education attended the opening ceremony of the event. DONATE BLOOD TO SAVE LIVES

TEI signed a "Blood Donation Protocol" with the Turkish Red Crescent's Blood Donation Center in Eskisehir on April 14, 2016, warranting that it will make blood donation twice a year. The second blood donation for 2016 took place at the Turkish Red Crescent's Truck, which visited TEI premises on November 28 and 54 TEI employees volunteered to donate blood.

46 TEI POST

TEI LAUNCHES A NEW SOCIAL RESPONSIBILITY PROJECT

TEI has entered into a new collaboration with Eskisehir General Public Hospital, and upon the request of the hospital management, necessary arrangements were made in the empty field across the Alcohol and Drug Addiction Treatment Center (AMATEM) to provide an environment, which will facilitate the rehabilitation process of the patients receiving inpatient treatment at AMATEM. For the project, TEI undertook ground improvement, installation of basketball, volleyball and mini football equipment and pergolas to provide a suitable environment for patient visits and fencing of the entire area.

TEI KICKED OFF THE SECOND YEAR OF VOCATIONAL HIGH SCHOOL COACHING PROGRAM

The second year of the Vocational High School Coaching Program was kicked off with a meeting attended by K. Levent Tufekci, TEI HR Director, Cagri Kose, Vocational High School Coaching Project Manager, Private Sector Volunteers Association and coaches on November 4, 2016. On December 26, "Bowling Tournament" was held in the evening to make the students and coaches start the new year of the program with a high level of motivation. After the tournament, the participants had dinner together and the event ended with the presentation of the championship cup to the winning team.

47 İŞ SAĞLIĞIBY TEI EMPLOYEES VE GÜVENLİĞİ

A SATISFYING, DRAMATIC AND

I C TRAGIC YEAR IN SPORTS WORLD L : A B 2016 BY BURAK

2016 marked a highly significant year in the world of sports. It is sort of tradition to take a look at what happened throughout the year when you are about to leave it behind. So I didn't break the tradition and summarized some of the major sporting highlights of the year.

ny event that leaves a mark in the history will Two legends say farewell to the Olympics find its way to the pages of history, regardless of As might be expected, I should mention Michael Phelps the topic. Although the answer to the question and Usain Bolt first. Rio Olympics 2016 witnessed these A which developments left a mark to what extent two legendary figures that compete in the two prominent in 2016 varies depending on the person and his or her disciplines in Olympic Games, namely swimming and own interests, I have to admit that 2016 marked a highly athletics, say goodbye to the Olympic stage. Before Rio important year in the world of "sports", which is the theme 2016, he was already the best Olympian in the history of this article. First of all, what makes 2016 different with his 22 medals and by winning 5 golds and 1 silver was that it was a "year of Olympics". As usual in recent in Rio, he clinched that he is the best star ever in this years, Rio 2016 Olympics started with concerns and organization. Bolt, with his funny and cheerful attitudes controversies: The organization's negative effects on the being the exact opposite of Phelps's mechanical and economy of the city hosting the Olympics, concerns about victory-oriented style, won the gold medal in 100 m, 200 whether the facilities to be built for the organization will be m and 4x100 m relay and became the first athlete to of use later on, the workers who work overtime for many obtain the "triple triple" which can unlikely be repeated hours to complete the construction of these facilities any time soon. Phelps and Bolt created such a big wave on time without getting their due and protests across of excitement that it wouldn't be exaggeration to say that the country... However, the moment when the Olympics their absence will be felt more deeply than the excitement start, all these concerns and complaints fade into the for the new performances in Tokyo 2020. It was a great background for the sports fans because the Olympics chance to be able to witness these two athletes make have left us a legacy of proverbial performances that will history and we will never forget the joy of being among be remembered even a hundred years later, so we focused those lucky few. to make the best of it one more time. Favorites of the year Besides these two legends, the American artistic gymnast Simone Biles is one of the top figures of the year who is definitely worth mentioning. Although she is only 19, this young American has managed to make a name for herself after winning five medals with her performance this summer. She is even compared to Nadia Comaneci, the Rumen gymnast who has become a legend after her outstanding performance in Montreal 1976, and that alone is I think enough to explain what a great impact Biles has created. Her fellow citizen and coeval Katie Ledecky and Hungarian swimmer Katinka Hosszu also left their mark on this year's Olympics with their performances in the pool. Moreover, South Africa's Wayde van Niekerk, who broke Michael Johnson's 17-year-old 400m world record that was considered unlikely to be broken, and the British distance runner Mo Farah who achieved a second consecutive 5000 m/10,000 m double were among other figures in the spotlight.

48 TEI POST

Olympic spirit, ambition and determination more successful at this Olympics compared to London Besides the sporting aspect of the Olympics, what reflects 2012, some believe that our performance failed to meet the Olympism spirit best is actually that everyone is entitled the expectations. However, apart from this subjective to participate in this competition and it is not focused discussion, it is true that we attended this Olympics with a on winning. The Olympic games in 2016 contributed to younger group competing in more disciplines. The exciting this mission with the acceptance of the "Refugee Team" performances of our young athletes like Tutya Yilmaz (age to the organization. The Olympics enabled the refugee 17-Artistic Gymnastics), Irem Karamete (age 23-Fencing), athletes forget about the difficulties in their personal lives Mete Gazoz (age17–Archery), Nida Eliz Ustundag (age for a while and become a part of this festival; and sports 20-Swimming) was promising for sports lovers in terms fans who watch their competitions from all around the of our future performances at Olympics as well as for the world shared their joy and happiness. Likewise, Summer development of sports culture in Turkey. Paralympic Games, organized right after the Olympics, was another sports organization during which we were inspired Surprises in football by the ambition of others and shared their well-deserved When it comes to other events in the world of happiness. This organization should be seen to witness sports than the Olympics that attracted a great deal the ambition and determination of human rather than who of attention, football comes at the first place. The football championship in the old continent witnessed an unexpected final. Under the leadership of captain Cristiano Ronaldo, who had reached the topin Europe with his team Real Madrid only one and a half months ago, Portugal drew in all 3 matches in the group stage and hardly qualified for the second round, after which it knocked out all its competitors one after another despite not being favored, won the cup which was a first in its history. However, this achievement was not the biggest surprise in football. Two months before Portugal won the European championship, Leicester City won the Premier

was more successful than others; and it was like a real slap in the face for the humankind who can easily complain everything all the time. Besides, it was an interesting note on the history that Turkey ranked 41st at Rio 2016 with 1 gold, 3 silver and 4 bronze medals whilst it ranked 34th at 2016 Summer Paralympics with 3 gold, 1 silver and 5 bronze medals

Promising young athletes As we mentioned the medals our country won, let me close the topic with a short assessment of Rio 2016 from Turkey's perspective. Although medal-wise Turkey was

49 İŞ SAĞLIĞIBY TEI EMPLOYEES VE GÜVENLİĞİ

The excitement of tennis in Turkey and worldwide Doping, the biggest shame in the world of sports, showed itself in tennis courts this year. Maria Sharapova, the world's highest paid female tennis player admitted that she had been using the drug called Meldonium for many years, which became prohibited on January 1, 2016 and she made a huge mistake as she didn't check the link in the e-mail sent by World Anti-Doping Agency (WADA) about it. As a result, she was suspended from playing tennis for two years, which would later be reduced to 15 months, leaving behind the controversies that although this substance is used by many other athletes, the Russian tennis player was treated more harshly than others and the sanction imposed on her is not equitable. Apart from doping, the tennis world witnesses that Serena Williams and Novak Djokovic, who had dominated the women and men tennis for a long time lost their world League title. Manager Claudio Ranieri's players won the Number 1 ranking. German Angelique Kerber who won the championship under the leadership of Riyad Mahrez and Australian Open and US Open in 2016 and reached the N'golo Kante accompanied the legendary performance finals in the Olympics and WTA Finals became the number of Jamie Vardy who had played in lower-divisions during 1 in women tennis; whilst British Andy Murray who won most of his career and has been playing in the Premier the Wimbledon, Olympics and ATP World Tour Finals and League with this team for the last two seasons only. They reached the finals in Australian and French Open, become finished the title race in ahead of the giants with much number 1 in men tennis. Andy Murray also won the golden bigger budgets, which was the biggest surprise not only medal in Rio 2016 repeating his success in London 2012 in only in 2016 but also in recent decades. Besides these, Olympics, which makes him unique in history as a two- Sevilla's achievement is also worth mentioning: The time Olympics winner. Besides Murray, Rio 2016 turned Andalusian team won the UEFA Europa League for the out to be quite productive for tennis. Porto Rican Monica third consecutive time. The Spanish club won the five final Puig who hadn't even reach quarterfinals in any Grand matches they played during the last 11 years, writing their Slam won her country’s first gold medal while Juan Martin name in golden letters in the history of the tournament! del Potro reinforced his return to courts. After suffering from injuries for many years, the Argentinian tennis player Basketball highlights gave one of the strongest performances of his career in It wouldn't be wrong to start with Turkish team when Rio 2016 by defeating Novak Djokovicin the first round assessing basketball in 2016. We left a legendary season and Rafael Nadal in the semi-finals, taking the silver medal behind during which Galatasaray Odeabank won the to his country and he had the lion's share in the first-every title in the second-tier Euro Cup and Fenerbahce lost to victory of his country in Davis Cup. Let's hope that Potro CSKA Moskow with one lost rebound in Euroleague final. Let's hope that these achievements, which have been promoted with successfully investments in recent years, are maintained in the long run with the right planning and we can enjoy watching our teams run for the top place every year. Looking at the other side of the Atlantic Ocean, the Cleveland-Golden State rivalry left its mark on 2016. Golden States finished the regular season with a record of 73–9, breaking the legendary Chicago Bulls' NBA record with the legend Micheal Jordan, and just as they were in the discussion of being called the best team ever in NBA history, they lost the final series in seven games and became the first team in NBA history to lost the series from 3–1 lead in the Finals. Lebron James, on the other hand, moved Cleveland to championship, leaving behind all the negative comments that has been around for years about how he lacks leadership quality and remains ineffective during some though moments, and has written his name with even bigger font sizes among other legends.

50 TEI POST

would not have to suffer from the nightmare of injuries Undoubtedly, the death of Muhamad Ali made the greatest in the following years and we can continue to watch impact in 2016. The US boxing legend, who is recognized what he can do at this level. 2016 also marked a historic as the greatest athlete ever by some people, passed year for Turkish tennis, especially in women tennis. After away last year. When he was 18, he threw his gold medal, Cagla Buyukakcay and Ipek Soylu qualified for an upper which he won for the USA in the Olympics into the river level last year, it was no surprise for us to watch them to protest the discrimination against black people in his performing in Grand Slams and Olympics. Now we only country; he went to jail because he refused to fight against wonder how well they will perform in any WTA tournament, Vietnam; he knew how to use the media with his hallmark which makes us very proud. We will be seeing in the priggish and easygoing style both in and out of the boxing upcoming years how long they will remain at this level and ring; and he was always under the spotlight, addressing to what they will achieve, and sharing its excitement. people with his sensational statements and solid stand as a black and, after he had converted to Islam, Muslim US Our National Pride in volleyball citizen, which made him a role model for all the minorities Finally, looking at the developments in 2016 for volleyball, in the world. That's why his mark on the history will never first we should mention the performance of Eczacibasi be forgotten. And our generation will remember him by the Vitra. Over the last eight years, at least one Turkish team time when he lighted the torch at the opening ceremony qualified for the Final Four and they played in the finals of Atlanta Olympics 1996 and our fathers waking up in in the past seven years, winning four of them. Turkey's the middle of the night and going to the coffee houses to outstanding performance in women volleyball was watch his matches. reinforced with three championships over the last six years till 2015 in Women's Club World Championship. After winning this championship last year, Eczacibasi Vitra 2016 was a satisfying, dramatic and tragic sports year in has become the first club in the world to win the FIVB many aspects, with promising developments especially World Club Championship back-to-back and continued to in our country. I hope this development and excitement make us feel proud. continues to grow in the following years and we can watch many other matches, tournaments and performances that As regards other sports disciplines, Mark Selby rules the will make us proud. game in snooker as number 1 of the world in 2016. He won two of the Triple Crown events, namely the World and UK Championships; and it was a happy coincidence for him that his favorite football team Leicester City won the Premier League championship on day same day, in the same hour when he won the title of world champion. Back in 2014, when he won his first title as the world champion, Leicester City had also ranked first at the Championship League, qualifying for the Premier League. Being the subject of these two happy coincidences, Selby is now one of the six players who won all of snooker's Triple Crown events at least twice.

Farewells to legends After these performance reviews, let's end this article by commemorating the athletes who have retired from sports and life. Especially for NBA, 2016 was a milestone as three big legends Kobe Bryant, Tim Duncan and Kevin Garnett retired. The old generation's stars have fully pulled back, leaving the stage to the new generations. However, unlike those in NBA, some farewells were more tragic. In 2016, we lost Turgay Seren, one of the greatest goalkeepers of Turkey, the "Berlin Panther" who played for Galatasaray and the National Team for many years. ABOUT BURAK BALCI 2016 also witnesses the loss of Johan Cryuff, a globally Born in 1984 in Ankara, Burak graduated from the Department recognized figure who served for development of football of Mechanical Engineering, METU in 2006 and received his both as a player and as a manager. Also in 2016, the master's degree in Computational Mechanics from Technical aircraft transporting the Brazilian Chapecoense football University of Munich in 2008. He started to work at Turkey squad to Colombia for the first leg of the 2016 Copa Technology Center in 2009. He has been serving as Lead Sudamericana Finals crashed in Colombia, killing 71 out Engineer at TEI's Engineering Office in Ankara since 2015. of 77 people onboard and out of the six survivors, three were the players.

51 BY TEI EMPLOYEES

N

A L S A AT ENGINE FIRES BY M UJD One of the most significant common failures that affect the safety and reliability of today's aircraft systems is engine fires. Technological advancements, in return, offer highly reliable engine parts to minimize the possibility of engine fire.

echnology has grown exponentially in security of aircraft systems today is the same as recent years and continues to grow without the one that had caused the Qatar Airways' flight deceleration. As in any other industry, 240 from Istanbul to Doha return to Istanbul for an technological developments lay the emergency landing or ended the dream of Japanese foundation for emergence of new products All Nippon Airways' dreamliner Boeing 787-800, Tin aviation, as well. Autonomous systems designed performing flight NH959, early with a rejected to minimize human error enables simultaneous takeoff: Engine Fires! control of numerous variables. On the other hand, as a result of the improvement and development Aircraft engines are prone to occurrence of fire due studies on structural parts, which go back in time, to their design characteristics. This is because their we are living in an era where the aviation industry has design involves combustion by nature. The point is managed to minimize structural damage in today's to make sure that this combustion occurs as much aircraft. On the positive side, these developments as needed and does not exceed the dedicated in technology enables production of highly available parts. Subsystems operating at high temperatures and reliable systems whilst on the other hand they generate thrust and/or power in combination with result in more complicated systems. The biggest other subsystems suppling inflammable fluids; and threat for complicated systems is the risk of common if they are not supported with a sufficient design, failure, which may cause multiple systems to their efforts may easily be sabotaged by fire. It would become unserviceable simultaneously, leading to be more appropriate to address aircraft engine fires occurrence of a failure that might result in an aircraft in two different categories, namely as engine fires accident/destruction. One of the most significant occurring in reciprocating engine aircraft and jet types of common failure that effect the safety and engine aircraft.

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Main sources of fires in reciprocating engine aircraft: Compressor section: Potential hazard factors that are considered as particular risks such as foreign Fuel and fuel lines: One of the most common fuel types object damage, bird strike, ingestion of stones etc. used particular in utility aircraft is AVGAS. As it has a low affect compressors in jet engines first. It may cause flashpoint, it brings along the risk of fire. Any potential severe damage in fast-rotating compression part if damage in high-pressure fuel lines is one of the most a compressor blade is damaged or broken, which common causes of fire. may led to short term flame spread with the effect of inflammable titanium powder exposed to high Accessories: Alternators, regulators, wiring and temperatures. sometimes the batteries used in engine compartment may lead to electrical fire as a result of any damage caused by Combustion section: Component damage in the engine heating. In addition, as they individually happen to combustion chamber, which is the blazing part of the involve high voltages, a failure in electrical lines may also engine, may cause an ongoing combustion. If fuel supply lead to fire. continues to this area when an ongoing combustion has occurred, the fire may quickly spread to the other parts Lubrication lines: Engine lubrication system is also one of of the engine. Although combustion chamber is design the systems that carry inflammable fluids. All lines carrying to endure high temperatures, other sections will be pressurized lubrication fluid may lead to fire in when vulnerable against such high temperatures. combined with high heat in case of damage. Even if a leak in these lines does not cause start of a fire by itself, it may Turbine section: Like combustion chambers, cause small fires to grow large. turbines are made of materials that can endure high temperatures. Especially after a failed start-up, Exhaust system: The exhaust system in engines is an accumulation of unburnt fuel on turbine blades may area of high fire risk. This is because it is where gases cause fire when these fuel deposits are exposed to high reaching extremely high temperatures circulate and temperatures. the heat emission is the highest. Fires can occur when turbine(s) at high temperatures come into contract Reduction gearbox: These parts can be defined with an inflammable fluid such as fuel or oil. Generally as the components that transmit the thrust to speaking, the fire risk factors for jet engine aircraft are the propellers especially in turboprop and turboshaft same as in reciprocating engines, namely inflammable engines. Lubrication is an important function for fluids, reservoirs containing a high energy, hot spots, these components, where contact of lubricants with electrical equipment etc. However, regional distinctions magnesium alloys in particular might lead to fire. are relatively more clear in jet engines compared to piston engines, which involve reciprocating subsystems due to Accessories: Accessories contain equipment such as systemic differences. Clear distinctions like compressor, heat converters used as lubricant and fuel coolants, combustor, turbine, accessory and reduction gearbox power generators, fuel pumps etc., which involve a high (Turboprop, Turboshaft etc.) strengthen our hand as safety risk of fire due to presence of inflammable fluids and engineers and facilitate things for designers. electrical voltage.

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Aircraft engines are prone to occurrence of fire due to their design characteristics. This is because their design involves combustion by nature. The point is to make sure that this combustion occurs as much as needed and does not exceed the dedicated parts.

Considering the points mentioned above, it is clear that may lead to a "major effect" or worse. A design focused aircraft engines are highly prone to occurrence of fire; on compliance with the regulations rather than safety is as such, it is possible to avoid this risk of fire. Modern destined to fall short of the ethical values and in case of a technology provides highly reliable parts specifically conflict between applicability and safety, it is essential to for aviation industry. It is possible to minimize fire risks insisting on seeking for a solution. by selecting various designs or components for lines conveying inflammable fluids such as pipes and hoses Let me remind you that "Engine is the heart of an aircraft"; resistant to high pressures, sheaths to protect wiring and remember when a fire breaks in the heart, it may lead from high temperatures or rupture damage and hot spots to a burning hole in your pocket and may leave many located in distance from inflammable fluid lines and people heart-stricken on the ground as in the case with cables. British Airtours Flight 28M! Be safe... Controlled and uncontrolled fires International aviation authorities address fire impact in two different categories: Controlled fires and uncontrolled fires. So, what is a controlled fire? If it is possible to detect the presence of fire and a design solution has been developed to stop the fire in case of occurrence of any fire, then it means that the fire is controlled. Fires can be taken under control by using methods such as cutting fuel supply in occurrence of a fire in the aircraft engine, selecting appropriate materials to prevent spread of fire and using manual or autonomous fire extinguishing systems. In that case, occurrence of fire is considered as a major engine effect. If the system does not involve a fire extinguishing or spread prevention system in case of fire, it is identified as hazardous engine effect. This is because occurrence of a fire after a potential damage with a minor impact can turn this minor engine effect into a catastrophic impact.

Unfortunately, "system safety" cannot provide 100% protection against accidents but it can minimize the ABOUT MUJDAT ASLAN possibility of accident to an acceptable level. The Born in 1990 in Ayancik, Sinop, Mujdat graduated from important thing is to bring a professional conscientious Department of Aeronautical Engineering, Aeronautics and responsibility along with the costs, national and international regulations and applicability to the table Astronautics Faculty, Istanbul Technical University in 2013. He when the authorities and designed get together to has been serving as an Engineer at the Piston Engines Design determine an acceptable level. As a rule of thumb, safety Management of TEI since 2014. cannot be comprised for cost saving to the extent that it

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"ESKISEHIRSPOR

T

U L U B K B GO FANS AT TEI” Y UGUR

ife is so much like football. Football requires personal We have formed the "TEI Eskisehirspor talents but in fact, it is a game played as a team. Isn't Fan Club" with 300 TEI employees to it the same with life? No matter how talented you are; L without a good team, you are destined to loose. And support our favorite football team come I think, a good team should have the support of a good fan rain or shine! base behind it.

It all started with this idea and together with 300 TEI employees, we established the "TEI Eskisehirspor Fan Club". We try to support our team at all matches at home and away as much as we can. We all make our living in this city; and we love and support everything about it and not surprisingly, we are in love with its football team, Eskisehir. As members of “TEI Eskisehirspor Fan Club”, we support our team worthily and in line with the value of TEI culture every week whether at top tier seat or from behind goal back. And we will continue to do so come rain or shine!

ABOUT UGUR GOKBULUT Born in 1978 in Polatli, Ugur joined TEI as a team member of Manufacturing Directorate in 2004 and currently works as Machine Expert Technician.

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ILKER KURTULUS: MUSIC REPRESENTS MY IDEA OF LIFE

Ilker Kurtulus is a member of TEI who had a deep passion for music s a healer of the soul, music has an essential role in human life. since he was a little kid and never You can express how you feel through various pieces of music given up on his childhood dream of you listen to depending on your mood; sometimes you cannot being a musician. He spends hours A hold your tears when you hear a song playing while you cannot help but dancing with another one. One way or another, music helps you in his music room at home and at feel your feelings within inside yourself or express them out loud. the studio with his band, practicing Music plays a vital role in human life and for me; it represents the idea of music; and in this issue, he shared life. I love listening to music since I was a little kid. And I took up playing his musical journey with a musical instrument when I saw one of my classmate play a guitar some day in eight grade, which affected me deeply. For that time on, being "TEI POST" readers. a musician had become my childhood dream and that aspiration got stronger and stronger over the years to follow.

From a childhood dream to a song contest... To make my childhood dream come true, I started to take guitar lessons at the Vocational Course organized by Eskisehir Odunpazari Municipality in 2007. Attending that course was a milestone in my life because finally, I had taken a step towards achieving my dreams. Besides my musical skills, I discovered that I had a talent for mimicry. Although I was still doing music, I focused on mimicry for around two years. My family and close friends encouraged me to attend talent contest "Yetenek Sizsiniz Turkiye" in 2011 in mimicry category. I made to the semifinal with my impression of celebrities. Then, I focused back on music. After the guitar, ABOUT ILKER KURTULUS I took violin, baglama and piano lessons. After many years of training, Born in 1993 in Eskisehir, Ilker joined TEI as a my life has become intertwined with music. We have a band, which team member of Manufacturing Directorate in I founded, and we practice music for hours and hours at the studio. 2015 and currently works as Machine Assistant Also, I keep practicing music at home in my music room where I have Technician. got a classical guitar, an electro-acoustic guitar, a violin, a baglama, a tambourine and an organ.

56 TEI POST PALUDARIUM BRINGS NATURE INTO YOUR HOME! We are all familiar with the idea of keeping fish in an aquarium quarium keeping is a very popular hobby today. Those small fish as a hobby. Yet, keeping plants tanks we set up at our homes or workplaces are a giant world in an aquarium sounds a bit odd. for the creatures living in them and aquarium keeping requires And probably, this will be the first A providing everything they need in that world. time most of us have heard about My first acquaintance with an aquarium goes back to 10 years ago. I paludarium. Semih Koseoglu from took up fishkeeping with goldfish in a small fish tank and continued with adding live plants into the aquarium. Growing plants in the aquarium TEI has told us about his interesting was more interesting for me than fishkeeping because the feeling of hobby which sort of feels like peace that comes with the green nature is priceless! At first, all I cared bringing nature into your home. about was to be able to keep them alive; but as I got to know more about them, I focused on grooming and diversifying them. It was a great pleasure to see them flourish as I met their needs for sand, light, fertilizer, heat etc. regularly. When they grow long enough and need trimming, I still cannot throw away the branches that I cut after all the hard work and effort I put into growing them.

A waterfront simulation After a while, I came across the concept of palidarium. Palidarium gives the impression of a lakeshore, it is like bringing the nature into your home. Unlike aquarium which is fully about aquatic living beings, aquatic plants and aquatic environment, paludarium is a waterfront simulation. It focuses on waterfront rather than the water itself. That is, water feature rocks, tree roots, marsh plants and ivies are used without changing their natural look. Semiaquatic animals such as salamanders, frogs and turtles are preferred for palidarium. I don't know about you but when I see a lake view or a natural pool, I look at the waterfront rather than its depth, size or color. For me, what makes the scene beautiful is the natural view of where water meets the land.

ABOUT SEMIH KOSEOGLU Born in 1989 in Eskisehir, Semih joined TEI as a team member of Manufacturing Directorate in 2012 and currently works as Machine Assistant Technician.

57 ACHIEVEMENT BOARD

OUTSTANDING PAPER AWARD FROM SPAIN

The research paper titled “Experimental Investigation of Effusion and Film Cooling for Gas Turbine Combustor”, which was presented at the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, held in Spain between July 11-13, 2016, was selected the "Best Paper" during the Combustion-3 session and granted “Outstanding Paper Award” by the conference committee.

The paper presents the results of experimental studies for investigation of effusion and film cooling for gas turbine combustors. The results of the study can be used in combustor cooling design phase for engine development projects.

The study was conducted by Dr. Abdullah Ulas, Professor at the Department of Mechanical Engineering, Middle East Technical University, as project coordinator, as well as Sinan Inanli, Staff Engineer at Design Engineering Directorate, TEI and Dr. Tolga Yasa, Assistant Professor at Department of Mechanical Engineering, Anadolu University under SANTEZ project financed by the Ministry of Science, Industry and Technology.

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TEI Social Activity Group organized four tours to Abant, Bolu and Golcuk Natinal TEI SOCIAL ACTIVITY GROUP Park on different dates. Thanks to these organizations, nearly 400 TEI employees KEEPS TRAVELLING AROUND got to explore the spectacular beauty of nature and enjoy at a fun barbecue party with their families.

“blisket” GOES ON ITS FIRST TREK

TEI's Bicycle Club “blisket” organized its first trekking tour in nature, how to act as a team and rules of trekking before on December 25 in Bozdag, Avlakkaya. The "blisket" team the tour began. The group walked in a single file for about set off from Eskisehir city center to Hekimdag Village, and 5 kilometers on 15 cm-thick snow in fog at about 0°C to get off the bus when they arrived at the departure point of -2°C by following the footsteps ahead of them to arrive in the predetermined route, which is nearly 6 km to the village, Avlakkaya. where they made their final preparations, distributed their provisions and took photos. After a break around the frozen waterfall, the second leg of the trek started. The group walked through a relatively dense On snowy roads in fog... forest on a rocky and snowy ground and crossed waterways Trekking leader Alper Kocdeviren gave a briefing on walking for another 5 kilometers, arriving at Eskisehir - Mihalgazi techniques in snow, potential dangers that can be faced Highway where the tour ended.

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BY SAMET ASLAN

LET'S TAKE A HISTORY, CULTURE AND NATURE TOUR IN THE BALKANS

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We wished to both swim and get to know different cultures in the summer vacation of 2016. But although summer set in, we didn't have a vacation plan yet. Just as we were thinking that we could only make it to our hometown due to high prices, we hit on a good idea to travel to the Balkans. The Balkan countries promise an awe-inspiring nature, a deeply-rooted history and a cultural experience while offering quite affordable prices when compared to the other European countries. We started to read travel blogs without a moment's delay, and we mapped out a 10-day vacation route covering both nature and history.

Although the best way to travel the Balkan countries is renting a car, we refrained from driving on the quite unknown mountainous roads; so we mapped out a route that we could travel by public transportation means and added Podgorica, Budva and Kotor in Montenegro, Dubrovnik in Croatia, as well as Mostar and Sarajevo in Bosnia-Herzegovina to our vacation route. While Montenegro and Bosnia-Herzegovina do not require visa for Turkey, Croatia requires visa as it became a member to the EU in 2014. After purchasing our round-trip tickets to Podgorica and performing hotel reservations via Internet, we started to count the days for the vacation.

Podgorica And the big day arrived! We took off from Ataturk Airport, and landed in Podgorica, the capital of Montenegro,

Sahat Kula – Podgorica

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Panoramic views of Dubrovnik (from the castle walls)

approximately one and a half hour later. Podgorica Airport Turkish words and location names since we reigned over is as small as Anadolu University Airport. Being the capital the Balkans for a long period of time... After we walked of Montenegro with a population of 700 thousand people, around the streets for about 2 hours and saw two parks, Podgorica has a population of just 170 thousand people. bridge and shopping center, we returned to the hotel. We took a taxi to go to the city center from the airport. The taxis have a fixed tariff, like the minibuses in our country; Budva but if you bargain, you can travel at a lower price. It costs On our second day, we went to the bus terminal early EUR 12 to go to the city center of Podgorica by taxi. We in the morning to go to Budva, the touristic attraction have learned that these taxis take people to Budva at EUR of Montenegro, and we saw that minibuses were used 50... It could be a good option to directly go to Budva instead of buses. If you tour the Balkans, you are well after a 1.5-hour travel instead of going to the city center of used to see this kind of surprises. The countries situated Podgorica in 15 minutes. across this geography are highly developed in some matters while they are far behind us in some matters that In fact we didn't plan to tour Podgorica, but we thought are highly normal for us. As if they lived in another parallel that we could stay in this city as we were travel-sore. world and went through a historical evolution that was After we left our baggage in the hotel, we started to walk different than the one we are accustomed to. We got on around the streets with a small city map in our hands. the minibus with our tickets, bearing a seat number, in The only thing that drew our attention in the capital, our hands, and we sat on empty seats without paying which does not look different than a small Anatolian regard to the seat numbers, specified on our tickets, like town, was the historical clock tower, dating back to the everyone did. Ottoman period, which was called as "Sahat Kula" by the local people. We encountered with all such similar Montenegro (Latin mons "mountain" + niger "black") is situated between mountains, as the meaning of its name suggests. Following a 1.5-hour travel on the roads between steep mountains, we finally arrived in Budva. Budva is a small and historical castle city well situated on the coastline. According to the rumors, the local settlement dates back to 2500 years ago, and Budva is among the most ancient settlements on the Adriatic coastline. Most of the buildings, preserved until this time, belong to the Venetian period. The city has been restructured to extend to the mountainsides. The historical city part has been restored completely. You can find small boutiques, souvenir shops, cafes and bars on the inner narrow streets. Beaches extend on the two sides of the old town. Sandy beaches extend under the rocks in the western side while “Dancing Girl” Statue and Budva a marina and pebble beaches extend in the eastern side. Starigrad (Old Town) at the rear "Dancing Girl" statue, arising on the rocks of the western coastline, is one of the symbols of the city.

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Budva is a small yet one of the most important touristic The Cathedral of Saint Tryphon attractions of the eastern Europe for many years. Beaches are not covered with gold sands, but sea waters are fine, cool, deep, calm and very clean. Another attractive element for tourists is the entertainment culture. Beach clubs are very crowded in daytime, and when the clock hits night-time, night clubs are bursting at the seams. If you would like to have a lively sea holiday in a country other than Turkey, Budva may be a good choice.

Kotor After spending three days in Budva, we set off on a journey to Kotor. We traveled with buses, that were not used in Turkey for 15 years, again. Gulf of Kotor is considered as one of the most beautiful gulfs of Europe. The historical Kotor city is a Venetian city settled on this gulf. It became one of the most critical points of the Venetian trade route for many years. Although it was very hard to occupy this city as the castle walls extent up to the peak of the high mountains backing this city, it entered into the domination of the Ottoman Empire from time to time. When you walk along the roads, which were once used by defenders in ancient times, up to the peak, you will find yourself face to face with an unforgettable view. Thanks to its historical texture that has been preserved until this time, Kotor is the only city in Montenegro which has been inscribed on the World Cultural Heritage List. When we stepped into the city walls in front of the harbor, we felt as if we had been beamed up to the Middle Age hundreds of years, we climbed up the castle stairs. The days. After walking around the narrow streets with our officer serving at the ticket office understood that we were baggage in our hands, we found our hotel that was speaking in Turkish, and set us off with Galatasaray's established in a 250-year building. While we were resting marches. Following experiencing such a lovely panorama in our room, we heard cheering, marches and screams just at the beginning, we continued to climb joyfully. of goal and saw burning torches inside the small pub The castle stairs were very old. Restoration works were situated in front of our room. We first though that a ongoing, but stones were ruined and supporting walls football match was played as it was the Olympics time, were destroyed at many locations. One should be very but screams of goal went on incessantly. Then we learned careful while climbing up the stairs. The road was too that the Montenegro Men's National Team was playing steep, and looked as if it would just never end. Some of a water polo match. I had never thought that a water the tourists gave up in the middle of the road, and climbed polo match was watched with such a joy. After traveling down. But the ones who insist on climbing up will be through the time inside the city buildings that witnessed awarded with a breath-taking view.

Dubrovnik

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The Stari Most

Fine Arts Academy of Sarajevo, and Festina Lente Bridge designed by the students of this academy (meaning "make haste slowly" in Latin)

Mostar Following two days in Dubrovnik, we traveled to the third and last country of our route: Bosnia-Herzegovina. Our travel to Bosnia-Herzegovina was like a nature trip; but when we crossed the border, the very old and neglected roads and buildings appeared. Bosnia-Herzegovina was far more affected by the war than Croatia.

Mostar was our first stop in Bosnia-Herzegovina. Situated around the Neretva River, Mostar is the most important city of Herzegovina region as well as of the country after Sarajevo. The ancient city, established by the Ottoman Empire, preserves the ancient Turkish architecture until Dubrovnik today. The Stari Most, built by Mimar Hayruddin upon After we spent five days in Montenegro, we arrived in the request of Suleiman the Magnificent, is the symbol Dubrovnik, the well-known Medieval city of Croatia, in of the city. To make it clear the meaning of this bridge approximately three hours. This time, our hotel was not for the city, we can say that the name of the city means situated inside the fortifications, instead we stayed at a bridge. In Bosnian language, “Most” means bridge, and room with sea view above the old town. Immediately after “Mostar” means bridge keeper. While the Neretva River, we settled in our hotel room, we took a tour in the city flowing under the bridge, separates the Bosnian and situated inside the fortifications. Croatian neighborhoods, the bridge connects them. This magnificent artwork, which was built again after it was Dubrovnik is also inscribed on the World Cultural Heritage destroyed during the Bosnian civil war, attracts visitors List, like Kotor. The city was considerably damaged from all corners of the world to this city... While walking during the war in 1991. However; once Croatia gained around the ancient bazaar, we not only saw the historical its independence, it was restored and retrieved today's texture but also the tangible traces of the war. If you ever texture. Just as we stepped outside the castle gates, we found ourselves face to face with an admirable city view. Sarajevo Tram and It wouldn't be wrong to say that the city is a piece of Avenue, Faulty of Law artwork in its entirety. The gorgeous buildings, dating back to 1000 years ago, stood as strong as if they had been built recently. The city, globally famous for its architectural beauties, became even more popular after hosting the television series "Game of Thrones". While we always encountered with European tourists in the other cities that we visited, here we saw many tourists coming from the USA and the Far East with the effect of this series. Of course, we didn't neglect to take photos of the shooting locations of "Game of Thrones". After we walked around all the streets admiringly, we climbed up the castle walls and looked down the city in a panoramic way.

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visit Mostar, you can do some shopping at the bazaar, and taste the Bosnian kebab, tasting like İnegöl meatballs, as well as Ćevapi. Two- or three-hour period is enough to tour this small city; but if you ever go to Bosnia- Herzegovina, don't miss to visit this sorrowful city!

Sarajevo Sarajevo is one of the most important centers of the Balkans since the Ottoman period. With its location along the riverside, Sarajevo is a typical Ottoman city. The region is known as Baščaršija. Sebilj, which has become the symbol of the city, is available at the center of Baščaršija. Developing under the Austro-Hungarian management following the Ottoman Empire without losing its importance, the city became the capital of the autonomous region during the Yugoslavian period. Extending around the river with the effect of all these different cultural elements, the city became one of the most powerful metropolitan cities of the Soviet era with its major avenues and gorgeous buildings. However, this gorgeous city was highly tired and worn due to the effects of the war. They are now trying to recover, but the losses were too gross to recover easily. ABOUT SAMET ASLAN In our first night in Sarajevo, we went out after dinner, and Born in 1987 in Balikesir, Samet Aslan graduated from the saw that the streets was too crowded. All entertainment places and even the streets were full of people. The Department of Aerospace Engineering, METU, in 2012. He has waiters were serving the people in the middle of the been serving as Engineer at TEI Design Engineering Directorate streets... We learned that it was the time of Sarajevo since 2012. Film Festival; so tourists from every corner of the Europe flocked into the city. And thereby we understood why the flight tickets to Sarajevo were so high. live in this city. You can see mosque, Orthodox church, Catholic church and synagogue side by side. Like the Sarajevo is literally a cultural mosaic. You can see the entire city, houses of god were also damaged to a great impressive works of the Ottoman, Austro-Hungarian and extent during the war. Following the war, the Turkish, Yugoslavian architecture everywhere in the city. Although Italian and Russian governments, considering themselves the Bosniaks comprise the most of the population, a as the protector of these religions, undertook the repair considerable number of Serbian and Croatian people also works of these houses of god.

Latin Bridge and the place where Archduke Franz Ferdinand of Austria was assassinated

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BY FATIH OZCAKIL

GOYNUK, TARAKLI, YEDIGOLLER When you are overwhelmed by the stressful, hectic city life, how about visiting a lovely, peaceful destination with friendly local people where you can find peace and quite in the arms of nature?

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Goynuk

Goynuk is a small lovely town, located in 98 km framed windows, white walls and red roofs, all distance to Bolu city center, where both Anatolian buildings across the town display uniformity. traditions and customs and the architectural Especially the streets shaped by local topography legacy is preserved and maintained. In Goynuk, and buildings with gardens lining on both sides the historic Ottoman houses nestled on the rocks, of these streets; houses with well-kept gardens, on the slopes of a high and barren mountain look houses thrown at the mercy of time; yet both like white mushrooms decorating the skirts of the reflecting the shiny beauty of a lively, lovely and mountain and the opposite hills. Whether it is a friendly lifestyle and looking ahead over one new building or a historic one, all architectural another surrounded by a picturesque texture of structures stand in harmony; with their green- old, slightly mossy pantiles.

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Victory Tower: A landmark of Goynuk.

The Tomb of Akshamsaddin Goynuk houses Akshamsaddin, originally called Shaykh Muhammad Goynuk was an urban heritage site with historic Turkish Shams al-Din bin Hamzah, was born in Damascus in houses, the history of which goes back to early 20th 1389. He was a follower of Haji Bayram Wali and one of century. They stand in a garden and line up on both side the masters of Mehmed the Conqueror and is recognized of the narrow streets on steep slope, which can go up as one of the greatest scientists of the 15th century. He to 40 degrees here and there, and most of them have has a number of works written in Turkish and Arabic on hipped-gable roofs covered with local tiles. Some of the medicine. Also, he mentions the microbe in his work houses feature ceilings decorated with various motifs in Maddat ul-Hayat (The Material of Life) about two centuries their living rooms. Most of the houses are one, two or prior to Antonie Van Leeuwenhoek's discovery through three-story buildings with inside stairs. The houses have experimentation. Despite the insistence of Mehmed the front porches called "hayat (life)" These beautiful houses, Conqueror, he does not want to stay in Istanbul after its sitting on the hills surrounding the streams flowing through conquest and returns to Goynuk. He dies on February 16, Goynuk, reflect the aesthetics and simplicity of early 1459 at the age of 70; and Mehmed the Conqueror has Ottoman architecture. a tomb built in Goynuk in 1464 to honor his name. Every year, on May 29, commemoration days are organized in Victory Tower the town to celebrate the anniversary of the conquest of The landmark of the town, the Victory Tower, was built Istanbul. by Hursit Bey, the first district governor of Goynuk in 1923, following the declaration of the Republic of Turkey. Located on the hill at the top of the town, the three-story wooden tower overlooks the town, reminding residents and tourists of the will and courage of the Turkish nation that won the War of Independence. The tower was designed in harmony with the wooden architecture of Goynuk and renovated in 1960 by preserving its original texture.

Lake Cubuk Lake Cubuk is at 11 km north of Goynuk, covering an area of 15 hectares. It was formed when a landslide from the Kayabası Hill blocked the valley. It has a spectacular and completely natural view and is surrounded by a beautiful walking track. Starting from the Lake towards the Cubuk Lake Cubuk is an ideal Plateu, the route is ideal or trekking enthusiasts. The destination for trekkers. dominant colors of fall combined with a beautiful, lovely lake view and colorful mills offer a good alternative for

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amateur and professional photographers. You can wander around the lake or prefer cycling as a fun alternative.

Gazi Suleiman Pasha Mosque The building, which was originally built as a social complex by Gazi Suleiman Pasha, son of Ottoman Sultan Orhan Bey, together with a hammam (Turkish bath) adjacent to it, between 1331-1335, has an interesting story. Reportedly, one of the masons working in construction for the building attracts Suleiman Pasha's attention as he sees a mason carry a stone to the construction site and then take it back instead of leaving there. "Why are you taking the stone back instead of Yedigoller (The Seven Lakes) leaving it?" he asks to the man. "I didn't want to place it in the foundation of such a holy building because I'm dirty" he replies. Then, Suleiman Pasha immediately calls the It is also possible to come across endangered plant foreman and orders him to build a Turkish bath next to the species like taxus. With tis serenity, spectacular view, Mosque. This is how the Gazi Suleiman Pasha Mosque diverse topography, walking tracks, waterfalls, and and Hammam is built to survive to date as one of the hills ornamented with various plant and tree species, oldest architectural works in Goynuk. Yedigoller is ideal for recreational activities like picnic, photography, ports activities and camping for all seasons. Tarakli Yunus Pasa Mosque Yet, it is best to visit between April and November. (Kursunlu Mosque) Various accommodation alternatives are available such as camping or trailers as well as the guest houses and Located in 28 km distance to Goynuk, Tarakli Yunus bungalows of the Ministry of Forestry and Water Affairs. Pasa Mosque has a Turkish inscription dated 1517 at the entrance. The mosque was built on a square layout by using dimension stone. The front face of the building is reinforced with the aywans and four marble columns. Surah Ar-Ra'd, Verse 24 "Peace be upon you, because you endured patiently" is inscribed on the upper part of the main gate. The left side of the stairhead opens to the balcony. Wooden shutters are installed on 10 niche- windows in the lower section. On the upper sections, however, there are eight arched windows with colorful glass. There is a fountain in the garden and graveyard in the backyard....All caligraphs in the Mosque were handwritten by Calligraphist Hafiz Saim Ozel from Tarakli.

Yedigoller (The Seven Lakes) The Yedigoller basin has been preserved as a National Park since 1965. It is constituted by seven lakes, formed as a result of landslides blocking the valleys, which are connected to each other through above and under land streams reaching out 1.5 km length in total from north to south. The remnants from the new Byzantine period in the "Koyyeri" locality in the National Park suggests that it was a settlement area in olden times.

The Yedigoller National Park has a strong base for scientific studies and researches. Consisting of various plant species, the Yedigoller National Park has the best ABOUT FATIH OZCAKIL mixed forests in Turkey. The most common species Born in 1983 in Eskisehir, Fatih joined TEI as a team member include common beech, hornbeam, oak, alder, maple of Manufacturing Directorate in 2004 and currently works as tree, elm tree, aspen, yellow and black pine, fir, hazelnut, Machine Expert Technician. linden and ash trees with long and smooth trunks.

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CAREER SUCCESS, SATISFACTION,

HEALTH AND LONGEVITY Prof. Acar Baltas / Psychologist

"Relax, avoid stress, don't work so hard, lean back..." We problems and die at a younger age? frequently hear those kinds of statements and advices for • How does it affect one's health and length of life to have healthy living. Yet, there is no scientific evidence to verify a career suitable for their predispositions and skills? them. On the contrary, the above-mentioned advices may lead to some serious threats on health. Leaving an It may be a good idea to look into the characteristics of interesting and demanding job, which makes you feel Terman's study group to answer these questions.2 Terman successful and moving to a coastal town like Bodrum, or closely focused on future achievements and careers of a joining a group to spend your time by playing golf, bridge study group consisting of intelligent and talented children, is likely to be highly-damaging choices let alone bring the in detail. desired comfort and relief. Career success = Longevity Scientist observed that mice that were kept in a crowded Data of the 700 male participants from Terman's cage and had to struggle with other mice got sick because study group were analyzed fifty years later. 20% of of stress and assumed that this phenomena applies to the participants were found highly successful whereas human, too. However, it would be extremely wrong to 20% were qualified as unsuccessful and the rest as conclude from such observation that "what is good for moderately successful. Two of the success criteria mice would also be good for human". A important majority considered for the study were as follows: Having a of the studies that arrived at this conclusion focused on respectable job such as medical doctor, engineer, a limited number of variables such as age, study period, chemist etc.; being in the Who is Who almanac. gender etc., only As a matter of fact, various other factors However, there were participants who were considered such as competence of the person in his/her job, career unsuccessful despite being highly-education and having satisfaction etc. are determinative on health. a job such as chemist, teacher, engineer etc. Bakers, mailmen, doormen and motorman were among those It is a very common practice to derive conclusions about who ranked in a lower status. It should be noted that human from experiments conducted with mice. Indeed, those people had the intelligence level required to have some of these conclusions give invaluable cues about job of a higher status. The overall assessment based on human. For example, the relationship between learning the results from the study was as follows: and praise or punishment is quite similar in human and • Of those participants with a successful career, none mice. However, as regards brain functions and social died at a young age. interactions, human and mice differ from each other • Participants that were highly successful outlived significantly. There is no direct evidence on that a fast- unsuccessful participants by five years. paced and busy work depress the immune system or long • Moderately-successful participants lived shorter than working hours cause cardiac diseases. To establish such a highly successful participants did and longer than relation, one needs to answer two questions: unsuccessful participants2. • Is it true that people who work hard or face many obstacles, reach a high status and spend their years The relation between the level of income and length of on demanding job positions experience more health life has been long known. However, since most of the

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participants in Terman's study group came from families a personality trait and having an unsuccessful career are in upper-middle and middle income classes, the length- considered as main risk factors even in the absence of of-life results were not associated with the level of the above-mentioned factors such as smoking/drinking, income but the level of success. At this point, personality unhealthy marriage etc. stands out as an important factor as "conscientiousness" (meticulousness, cautiousness, dutifulness, planfulness, In 1970s, members of the Terman sample were 60 years impulse control), being one of the big five personality old. Robert Sears, also a member of the Terman sample, traits, is strongly related to longevity. The same trait is also reassessed the career success and satisfaction level of determinative for career success. But more importantly, the participants, who had already left behind a long career, there is a strong relation between less conscientiousness based on the long-term data collected over many years. and lower career success. This trait was observed in The results of this assessment showed that what mattered Terman sample starting from childhood. Therefore, less to those people was not the pursuit of happiness, conscientiousness and lower career success seem to be friendship etc. but their families and the satisfaction they basic determinant for death at a younger age. get from their work. It was understood that most of them did not see their jobs as a source of stress. Another fact Ambition or achievement motivation is an important that was revealed during this assessment was that those indicator for career success. Results of the Terman study who chose their career consciously were more satisfied demonstrate that ambition, drive, high motivation and than those who were dragged into a random career4. self discipline are key to both a successful career and longevity. Job, competence and personality fit Today, a great deal of importance is attached to job and It was observed that those who cannot make a progress personality fit in human resources and management in their career and frequently change their jobs live literature. This opinion is based on the studies of shorter compared to those who have a regular career psychologist John Holland. Holland defined personality and assume more responsibilities. Although assuming traits and job fit in detail and suggested that career choice more responsibilities increases the burden of work on the reflect personality in many aspects5. As a result, it was individual, paradoxically it contributes to long-term health. mistakenly deduced through overgeneralization that those who do not choose a job that fits their personality would Dear readers, the results obtained through follow-up of be unhappy and unhealthy and this incompatibility would life journeys of 1528 people at regular intervals and in pose a threat not only for the body but also for mental close detail starting from the age of 11 through their death health. However, Terman study demonstrated that this demonstrate that recommendations of the quasi-experts approach is too "superficial" to explain the relation of the around us and many advices accepted as the "absolute personality and job fit with health. truth" by the people included by them are actually based on a baseless rationale. Levis Terman, a psychologist from Standard University, collected quick learner, curious kids from schools in Source of business stress California in 1921. Terman was the originator of the first Business stress is actually sourced from conflict in human relationships rather than the business itself. Not getting along well and disagreement with an oppressive and bullying boss, manager or colleague can actually lead to health problems. This is particularly true if career success depends on collaboration with others and one has a hard time in establishing such collaboration.

When a person has control over the results that s/he would get, compelling duties can be much less stressful. Having a negative relationship with others, adopting a hostile attitude, making a big deal out of minor issues have a destructive effect on health.

Those who are less critical of the people around them avoid conflicts and do not insist on their opinions no matter what (compromising) usually have a healthier and longer life. Unhealthy behaviors such as excessive smoking and/or drinking or an on and off marriage etc. caused increased mortality in unsuccessful career group in Terman sample. However, less conscientiousness as

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intelligence test ever. With the assistance of a large team other aspects of their lives. However, people with a lower of researchers, he evaluated thousands of students with a educational status can make it up with individual, social three-stage test, making a shortlist of 1528 students. He and professional success factors. Being an opinion informed them of the objective of the study, which would leader in their environment, taking an active role in non- start a long term relationship with them, and asked if they governmental organizations can be given as an example agree to join Inclusion into this study was like being a in this respect. As you can see, education is not a member of an elite group. Subjects proudly maintained determinant alone. this relationship throughout their lives. When they grew up, they called themselves first Terman's termites and Conclusion then shortly the termites. Working hard and struggling with difficulties do not directly pose a threat on health. Terman had detailed interviews with the students' families Doing your dream job or having a job that firs your and teachers during their adolescence and then with personality does not guarantee success or longevity. them. He not only subjected them to the intelligence test Many members of the Terman sample were engaged but also tried to measure their moods, sense of aesthetics, in other jobs than their dream job, yet they achieved social relationships, attitudes in class, the relations of success and lived a satisfied live. In comparison, some their parents, and their physical health and activities. He of them who had acquired a perfect profession put their collected the results of this study in his books "Genetic health at risk as they developed unhealthy behavior due Studies of Genius"1,2,3,4,5. to difficulties of their profession. Being intelligent and successful is not enough for longevity. When Terman died in 1956, his subjects were 45 years old and his team sustained their relationship. Later, Howard Friedman, a young public health professor, and References his assistant Leslie Martin6 discovered the treasure 1. Friedman, H.S.: The Multiple Linkages of Personality and Disease, Brain, Behavior and Immunity, 22. (2008). in Stanford University's library and found the "death 2. Kern, M.L. et al.: Conscientiousness, Career Success, and Longevity: A certificates" of study subjects to identify their cause Life upon Analysis. Annals of Behavioral Medicine, 37. (2009). of death. For two decades, they reorganized Terman's 3. Pavalko, E.K. et al.: The Study of career progression. J. of Health and Social Behavior, 34. (1993). meticulous records against modern criteria and 4. R.R. Sears: Sources of Life Satisfactions of the Terman Gifted Man. interviewed living subjects. As a result, they observed American Psychologist, 32. (1977). that many assumptions about a living a healthy life and 5. Holland, J.L.: The Psychological of Vocational Choice. A Theory of Personality Types and Model Environments, Baio Dell. (1966). longevity are not verified from scientific perspective or not 6. Friedman, H.S., Martin, L.R.: The Longevity Project, Hudson Street absolute truth. Press. 2011. 7. Friedman, H.S. et al.: Personality and Health, Subjective Well-Being and Longevity. J. of Personality 78. (2010). An important fact the study revealed is that personality and job fit does not guarantee longevity. For instance, length of life is relatively short among those who work in field that requires persuasive and entrepreneurial skills like sales or insurance. Those with higher social skills and work suitable jobs, on the other hand, lived longer6.

Another common misconception is that those who work had do not enjoy live much and they miss the beautiful aspects of live. Similarly, holders of jobs that require a high level of conscientiousness like accounting are considered to have boring lives. However, Terman study did not confirm that, either. People who have a job that they consider important live become more productive and successful and live a healthier and longer life compared to those who take the easy road in their lives and careers and stay away from pressure7.

It is known that people with a higher education level live longer compared to those with a lower education status. An well-educated individual who is living a productive life succeed in their career and are most likely to develop Prof. Acar Baltas / Psychologist themselves and remain creative, which influences the

72 HEALTH

NECK PAIN MAY BE A SIGN OF CERVICAL DISC HERNIATION!

A number of factors may lead to neck pain, but mostly it is caused by a cervical herniated disc. As in many disorders, early diagnosis and treatment prevents cervical disc herniation from leading to more severe results.

eck pain affects mostly those who work in an office calcification of cervical spine, myofascial pain syndromes, environment, yet it is an important condition that rheumatism, osteoporosis, repetitive stress-caused can be seen in any age group. One out of every damage due to wrong posture and wrong use of neck; Nthree people suffers from neck pain at least once however a great majority of neck pains are caused by throughout their lives. Neck pains occur as a result of cervical herniated disc. Assistant Professor Bulent Onal, degradation of the discs located between the between neurosurgeon at Acibadem Eskisehir Hospital answered the bones called vertebra and joints which constitute question about cervical disk herniation. the cervical spine as well as the muscles and connective tissues around the spine. What causes cervical disc herniation? Neck is made up of seven cervical vertebrae. There are Neck pain is one of the negative conditions occurring discs between vertebrae that enable movement. Discs due to the effects of modern life; it is caused by many absorb the pressure on vertebra thanks to its water and factors such as cervical herniated disc, disc degeneration, collagen-based structure; it also prevents contact of two

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In late stages of untreated conditions, complaints such as weakness in legs and urinary incontinence are reported because of the pressure on the spinal cord. The final diagnosis is made after a physical examination and MR examination.

rest, medication and physical treatment can be sufficient for most of the patients. If there is severe pain at the onset of the condition, we recommend bed rest and medication. Then the patient undergoes physical treatment after the pain is reduced. The surgical operation is determined based on the loss of strength and radiologic imaging in combination.

Is surgery a definite solution? For cervical herniated disc condition, surgical treatment is used to remove the pressure on the spinal cord and nerve tissue, in other word, to remove the hernia. As a result, patients' complaints such as pain, numbness and weakness in the arms are eliminated. Modern surgical operations can be a definite solution for cervical herniated discs. Moreover, the new methods can prevent development of any potential complications. bone tissues with each other. Disc tissue loses its water content and hardens with age or as a result of traumas, which restricts its movement. The condition occurs as a result of degradation of the tissue of discs, which carry the burden of the body. The softer inner part protrudes from the small ruptures on the harder outer parts of the discs. Sometimes small bone protrusions develop as the vertebral structure is damaged. The condition that occurs when the inner soft structure or bones apply pressure on the tissues around is called "cervical disc herniation".

What are the most important signs of cervical herniated disc? The most important sign is neck pain. Initially, neck and back pain is at the forefront but as the condition gets worse, pain and numbness in arms and fingers can be seen as a result of the pressure applied by the herniated disc on the nerves. After a file, weakness starts due to the pressure applied on the nerves. In late stages of untreated conditions, complaints such as weakness in legs and urinary incontinence are reported because of the pressure on the spinal cord. The final diagnosis is made after a physical examination and MR examination.

Is surgical operation a must in treatment of this condition? Contrary to common belief, surgical operation is seen as the last resort for cervical herniated disc treatment. Bed Assistant Professor Bulent Onal

74 ANNOUNCEMENTS FROM TEI

TEI EMPLOYEES WHO RETIRED BETWEEN JULY 1ST, 2016 AND DECEMBER 31ST, 2016

• Fevzi Karakas retired on July 12, 2016 as Support Specialist, • Dogan Bagcecik retired on July 12, 2016 as Shop Supervisor, • Ahmet Naci Gure retired on October 5, 2016 as Manager, • Ender Haskalfali retired on October 21, 2016 as Chief Technician, • H u s e y i n Ye n i c e r e t i r e d o n D e c e m b e r 3 0 , 2 0 1 6 a s C h i e f Te c h n i c i a n .

We wish them all the best in their lives after retirement.

RECIPIENTS OF YEARS OF SERVICE AWARD PLAQUE

30 Years of Service Award 15 Years of Service Award Deniz Ozcan Ibrahim Calikusu Saban Yurt Ali Al Elif Yenigun Ibrahim Yoru Ali Cınar Ercument Yagli Ihsan Uyuk 25 Years of Service Award Ali Gun Fahrettin Gumus Ilhan Eryilmaz Hamza Takil Ali Tunc Fatih Sonmez Ilhan Sengul Ugur Gorgulu Ali Yazar Ferdi Akin Ilker Bayraktaroglu Arif Aksu Fuat Donmez Ismail Ergun 20 Years of Service Award Aykut Asiklar Fuat Unalir Ismail Eryilmaz Hamza Sari Bayram Cetinarslan Gokhan Yalcin Ismail Yumak Ismail Koseler Bulent Caner Gurcan Toral Kadir Coskun Murat Canaslan Bulent Ferli Gurol Oral Kadir Tunca Mustafa Tuncer Bulent Guler Halil Ince Koray Aydin Ozkan Erkoca Bulent Ozdemir Hasan Cakirca Levent Aslan Rahim Bozkurt Bulent Sener Hasan Kirtilli Mehmet Baysan Cem Oden Hasan Kucukkor Mehmet Gursoy

75 ANNOUNCEMENTS FROM TEI

Plaque Ceremony

Mehmet Kircali Seyfi Kestel Huseyin Tore Vasvidin Gore Memduh Temel Seyhan Ozgur Husnu Gokce Yunus Ahmet Erden Mesut Yigit Suleyman Beleke Ibrahim Yilmaz Zafer Bayrak Mirza Yildiz Senol Cam Ihsan Onal Murat Arslan Suayip Sahin Ismail Onur Uye 5 Years of Service Award Murat Cetinkaya Tanju Canbek Ismail Orde Abidin Guner Murat Kalfaoglu Tolga Eroglu Kadir Elmas Ahmet Doruk Murat Kocaoglu Turgut Alptekin Kadir Yoruk Ahmet Yardimci Mustafa Cagri Ugur Koruk Kahraman Coban Ali Ciftci Mustafa Cam Zafer Togay Kemal Kalayci Ali Guler Mustafa Cifci Levent Inal Ali Ipek Mustafa Kemal Gulec 10 Years of Service Award Melih Arslan Ali Mulayim Mumin Koymen Adem Efe Meliksah Kocyigit Ali Osman Durul Mursel Akcora Ahmet Dincer Metin Cetin Ali Ozturk Nazif Gumus Ali Tuna Kirgiz Mevlut Aydin Ali Sercan Yilmaz Nazif Gungor Bahadir Ozdemir Muharrem Gurkan Alper Aydogdu Nazir Cifci Burhan Sokmenli Murat Ekincioglu Arif Erdogan Nevin Kantar Caner Caylak Murat Ertas Aykut Zobur Nihat Ergun Cengiz Yumrukaya Murat Ozkan Ayse Demir Oguz Unver Ceylan Arisoy Mustafa Arslan Aysegul Yamaner Celik Orhan Bozkurt Cihan Coskun Oktay Pektas Aysin Aras Orkun Cezmi Emre Gurlek Onur Basaran Bahri Akyol Osman Parlak Ercan Arican Osman Calik Banu Beris Omer Ozbek Ercan Sahin Ozan Koroglu Bekir Berdan Aksoy Omer Sarac Ercan Yilmaz Ramazan Parlak Bilal Turkben Ozgur Kara Erdinc Turker Ridvan Gulten Burak Demir Ramazan Gur Ergin Gungor Sabahattin Coskun Bulent Durukan Recep Incebuk Erhan Bozan Semih Daricioglu Cemal Ay Ridvan Bilir Ertan Sezgin Serkan Kesikbas Cihan Sahin Sabri Tiftik Fahri Celik Sinan Akduman Coskun Ekici Sedat Erdogan Ferit Yilmaz Suleyman Cakir Cigdem Yildirim Sedat Uzun Hakan Dinc Tamer Sertoglu Doruk Durmaz Selcuk Yavas Hakan Gulcan Turker Ozcihan Ekrem Gokce Serkan Beytas Hasan Huseyin Kale Ugur Ari Emrah Dasik

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Emrah Eker Gulsen Cakir Murat Eksi Serdar Guven Emrah Koseoglu Gurkan Cimen Murat Kayabasi Serhan Koseoglu Emrah Tufekci Gurkan Gur Murat Sagir Serhat Caliskan Emrah Yilmaz Hakan Akar Musa Karatas Serhat Ozturk Emre Durdu Hakan Ay Musa Uzun Serkan Cikikcioglu Emre Pehlivan Hakan Gundogan Mustafa Bayrak Seydi Yuce Emre Songur Hamza Avci Mustafa Kadir Karaman Sibel Piskin Engin Inal Hasan Isci Mustafa Kocagul Sinan Ozturk Ercan Eken Haydar Pek Mustafa Sahin Soner Korpe Ercan Tuncay Huseyin Govez Neset Ozil Suat Cayirli Erdal Polat Huseyin Ozturk Niyazi Metin Sultan Gaye Erdogan Erdi Badur Ibrahim Cetin Okan Ozturk Suleyman Altinorak Erhan Demir Ibrahim Yuksel Onur Elagoz Sakir Karagoz Erhan Gulsen Ilhan Gorgulu Onur Ozen Taha Girginoglu Erman Delikoca Ismail Dogan Onur Ozyurt Taner Unal Ersin Basaran Izzet Murat Aksit Onur Sonmez Taskin Taskiran Ersin Bilgic Kadir Aladag Orcun Koseoglu Tayfun Goktas Ersin Deveci Kadir Pinargulu Orkan Cinar Umut Eren Ersin Vatansever Kasim Kariman Osman Aysan Ozcan Vedat Uzun Evren Simsek Kerim Kahraman Oyman Kurban Vefa Saka Ezgi Ayten Cetin Dincer Kivanc Akcesme Omer Kahraman Certel Veli Ordek Ezgi Tigli Levent Sarsilmaz Omer Ozek Volkan Kutluay Ezgi Ugur Solakoglu Lutfi Cetiner Ovunc Celiker Yalin Okter Fahri Ersoy Orhan Megdat Yilmaz Ozdogan Turan Yasin Erdogan Fatih Batun Mehmet Ali Kavakli Ozer Demirtas Yasin Gunay Fatih Inan Mehmet Ali Kaya Ozgur Yildiz Yasar Sir Fatih Kilic Mehmet Basol Ozkan Fucucu Yilmaz Gurkan Ferdi Colak Mehmet Dogan Pinar Balli Yusufcan Ayas Gizem Ezgi Tatar Emre Uzun Pinar Cakar Zeki Sert Gokay Dokmeci Mehmet Erdem Ramazan Gungor Zubeyde Cini Gokcen Tuzturk Yilmaz Mehmet Kahyaoglu Recep Cinar Gokhan Kihri Mehmet Ozkan Ridvan Guven Gokhan Simsek Mehmet Ozkan Sayin Sefa Kaya Gokhan Unver Mehmet Sercan Kustepe Selcuk Turkmen Gokhan Ure Murat Can Ulgudur Selman Konuk Gokhan Yilmaz Murat Cam Semih Altindal

OUR DEEPEST CONDOLENCES SERHAN KURT

Serhan Kurt who had worked as Support Specialist at our company from 2004 to 2016 passed away on December 11, 2016. As TEI Family, we extend our sincerest condolences to his family and friends. May his soul rest in peace.

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