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Automated Generic Parameterized Design of Aircraft Fairing and Windshield

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Automated Generic Parameterized Design of Aircraft Fairing and Windshield Automated generic parameterized design of aircraft fairing and windshield Vijaykumar Govindharajan Aakash Narender Singh LIU-IEI-TEK-A-12/01271-SE Department of Management and Engineering Division of Flumes Department of Management and Engineering SE-581 83 Linköping, Sweden i ii Upphovsrätt Detta dokument hålls tillgängligt på Internet – eller dess framtida ersättare – under 25 år från publiceringsdatum under förutsättning att inga extraordinära omständigheter uppstår. Tillgång till dokumentet innebär tillstånd för var och en att läsa, ladda ner, skriva ut enstaka kopior för enskilt bruk och att använda det oförändrat för ickekommersiell forskning och för undervisning. Överföring av upphovsrätten vid en senare tidpunkt kan inte upphäva detta tillstånd. All annan användning av dokumentet kräver upphovsmannens medgivande. För att garantera äktheten, säkerheten och tillgängligheten finns lösningar av teknisk och administrativ art. Upphovsmannens ideella rätt innefattar rätt att bli nämnd som upphovsman i den omfattning som god sed kräver vid användning av dokumentet på ovan beskrivna sätt samt skydd mot att dokumentet ändras eller presenteras i sådan form eller i sådant sammanhang som är kränkande för upphovsmannens litterära eller konstnärliga anseende eller egenart. För ytterligare information om Linköping University Electronic Press se förlagets hemsida http://www.ep.liu.se/. Copyright The publishers will keep this document online on the Internet – or its possible replacement – for a period of 25 years starting from the date of publication barring exceptional circumstances. The online availability of the document implies permanent permission for anyone to read, to download, or to print out single copies for his/her own use and to use it unchanged for non-commercial research and educational purpose. Subsequent transfers of copyright cannot revoke this permission. All other uses of the document are conditional upon the consent of the copyright owner. The publisher has taken technical and administrative measures to assure authenticity, security and accessibility. According to intellectual property law the author has the right to be mentioned when his/her work is accessed as described above and to be protected against infringement. For additional information about Linköping University Electronic Press and its procedures for publication and for assurance of document integrity, please refer to its www home page: http://www.ep.liu.se/. ©Vijaykumar Govindharajan & Aakash Narender Singh iii iv Automated generic parameterized design of aircraft fairing and windshield Vijaykumar Govindharajan Aakash Narender Singh LIU-IEI-TEK-A-12/01271-SE Supervisor Raghu Chaitanya M V PhD – Linköping University Co-Supervisor Patrick Berry Lecturer, Linköping University Examiner Christopher Jouannet Assistant Professor, Linköping University v Abbreviation CATIA Computer Aided Three Dimensional Interactive Application VBA Visual Basic for Application KP Knowledge Pattern ECS Environmental control systems UDF User Defined Feature CP Centre Point SPE Star Pilot Eye MVP Minimum Visibility Pattern PC Power-copy AWACS Airborne Warning and Control Systems AEW&C Airborne Early Warning and Control vi Abstract The process of design is time consuming and result oriented. There is always a better scope for any design that reduces the time with better precision. Considering this as a major factor during design process, two of the vital parts of the aircraft conceptual design are taken into account where a lot of time can be saved. Major components considered in this work are fairings for the lift generating surfaces and cockpit windshield. In this work the major inference is to reduce the time spent on the initial conceptual design. The two components designed in this work are fairings and windshield. The fairing design in this work provides a flexible template which can be used for various fuselage and wing configurations for transport aircrafts. The windshield is classified into two types in this work, flat and blend windshield. Both the type of windshields can be implemented on appropriate fuselage. Both the components are designed to be implemented in single pilot as well as double pilot aircrafts. They also have parameters which can be modified according to the user requirement. The changes in the parameters provide the change in shape, size and volume of the components. The software used for this is CATIA V5. The process is carried out using two automation methods available in CATIA namely Power-Copy and Knowledge pattern. A comparison between the effectiveness of two automation methods used in this work is performed. vii Acknowledgement The master thesis work was carried out in Department of Management and Engineering, Division of Flumes at Linköping University, Sweden. It was a pleasure working with everyone in the department. There is a great gratitude and respect for everyone who has helped the authors to complete the work in a successful manner. We are glad for using this opportunity to thank everyone who helped directly or indirectly in the completion of the work successfully. Special thanks to Patrick Berry and Raghu Chaitanya.M.V who have been constantly motivating and suggesting improvements. We wish to extend our gratitude to Christopher Jouannet, Tomas Melin, Mehdi Tarkian and Kristian Amadori. The feedback and suggestions from everyone mentioned above has been very vital and valuable to judge the progress of the work. Family and friend are all the driving force and ultimate motivation factor for us. Thanking them would not be enough to express our gratefulness. Vijaykumar Govindharajan Aakash Narender Singh Linköping viii ix Contents ABBREVIATION ................................................................................................................................ VI ABSTRACT ........................................................................................................................................ VII ACKNOWLEDGEMENT ................................................................................................................ VIII CONTENTS ........................................................................................................................................... X TABLE OF FIGURES ........................................................................................................................ XII LIST OF TABLES ............................................................................................................................ XIII CHAPTER 1 - INTRODUCTION ....................................................................................................... 1 1.1 FAIRINGS ........................................................................................................................................................ 2 1.2 WINDSHIELD ................................................................................................................................................. 2 CHAPTER 2 - THEORY ...................................................................................................................... 4 2.1 FAIRING .......................................................................................................................................................... 4 2.2 DESIGN CONSIDERATIONS FOR WINDSHIELD ............................................................................................ 4 2.3 FAR PILOT COMPARTMENT VIEW. ............................................................................................................. 4 2.4 VISIBILITY REQUIREMENT .......................................................................................................................... 4 2.5 POSITIONING OF THE PILOT ......................................................................................................................... 7 2.6 COMPUTER AIDED DESIGN (CAD) ............................................................................................................ 8 2.6.1 Power-copy ........................................................................................................................................... 9 2.6.2 Knowledge pattern scripting ....................................................................................................... 10 CHAPTER 3 - CAD METHOD ........................................................................................................ 14 3.1 DEVELOPMENT OF WINDSHIELD .............................................................................................................. 14 3.2 Windshield automation framework ............................................................................................. 15 3.3 Flat panel windshield ......................................................................................................................... 15 3.3.1 Basic Flat Surface Template ............................................................................................................. 15 3.3.2 Visibility Template ............................................................................................................................... 17 3.3.3 Windows and struts ............................................................................................................................ 20 3.3.4 Fuselage Blend Template .................................................................................................................. 21 3.4 Blend panel windshield.....................................................................................................................
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