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Comparison of Helicopter Turboshaft Engines
Comparison of Helicopter Turboshaft Engines John Schenderlein1, and Tyler Clayton2 University of Colorado, Boulder, CO, 80304 Although they garnish less attention than their flashy jet cousins, turboshaft engines hold a specialized niche in the aviation industry. Built to be compact, efficient, and powerful, turboshafts have made modern helicopters and the feats they accomplish possible. First implemented in the 1950s, turboshaft geometry has gone largely unchanged, but advances in materials and axial flow technology have continued to drive higher power and efficiency from today's turboshafts. Similarly to the turbojet and fan industry, there are only a handful of big players in the market. The usual suspects - Pratt & Whitney, General Electric, and Rolls-Royce - have taken over most of the industry, but lesser known companies like Lycoming and Turbomeca still hold a footing in the Turboshaft world. Nomenclature shp = Shaft Horsepower SFC = Specific Fuel Consumption FPT = Free Power Turbine HPT = High Power Turbine Introduction & Background Turboshaft engines are very similar to a turboprop engine; in fact many turboshaft engines were created by modifying existing turboprop engines to fit the needs of the rotorcraft they propel. The most common use of turboshaft engines is in scenarios where high power and reliability are required within a small envelope of requirements for size and weight. Most helicopter, marine, and auxiliary power units applications take advantage of turboshaft configurations. In fact, the turboshaft plays a workhorse role in the aviation industry as much as it is does for industrial power generation. While conventional turbine jet propulsion is achieved through thrust generated by a hot and fast exhaust stream, turboshaft engines creates shaft power that drives one or more rotors on the vehicle. -
Comparison of Helicopter Engines
Comparison of Helicopter Engines John Schenderlein, Tyler Clayton Turboshafts...What are they? • Needed for high power in a small envelope • Very similar to turboprops • many turboshafts derived from turboprop engines • However, • exhaust is not used to propel • propeller load is applied to the airframe • Began ~1950s Main Uses • Helicopters • APUs • Marine Vehicles CH-53 Super Stallion • Tanks • Motorcycles • industrial power generation M1 Abrams MTT Superbike Major Players in the Market Turbomeca • French Manufacturer for small/medium turboshafts (500-3000 shp) • 18000+ in operation • Most popular engine: Arriel (600-1000 shp) • 30 variants • 245 lbs • SFC = 0.57 • 1 axial/1 Centrifugal compressor (PR ~9) • 2 HPT/1 FPT turbine Turbomeca • Newest Engine: Arrano (2018) • 10-15% increase SFC • new thermodynamic core & use of variable pitch inlet guide blades • Uses additive manufacturing for injectors Rolls-Royce • Most popular engine: M250 Series • inherited from Allison Engine Company (1990s) • 31000+ produced (50%+ in operation) • 450-715 shp • 160-275 lbs • 4-6 axial/1 centrifugal compressor (PR 6-9) • 2 HPT/2 FPT • Also used on the MTT Superbike RQ-8A Fire Scout Allison Engines (Rolls Royce) • Most noteable engine: T406 • Build specifically for the V-22 Osprey • 6150 shp • 971 lbs (6.33 p/w) • 14 axial compressor stages! Pratt and Whitney Canada • Canadian based subsidiary of PW • focuses on smaller aircraft engines • Majority of their engines based on the PT6 turboprop • PT6B/C series and the PT6T Twin-Pac (1000-2000 shp) • 3-4 axial/1 -
House Section (PDF 800KB)
E PL UR UM IB N U U S Congressional Record United States th of America PROCEEDINGS AND DEBATES OF THE 109 CONGRESS, FIRSTSESSION Vol. 151 WASHINGTON, THURSDAY, JANUARY 6, 2005 No. 2 House of Representatives The House met at 11 a.m. and was So we will pray and act now and for- Mrs. Emerson; Ms. Granger; Mr. Peterson of called to order by the Speaker pro tem- ever. Amen. Pennsylvania; Mr. Goode; Mr. Doolittle; Mr. pore (Mr. SIMPSON). LaHood; Mr. Sweeney; Mr. Sherwood; Mr. f Weldon of Florida; Mr. Simpson; Mr. f THE JOURNAL Culberson; Mr. Kirk; Mr. Crenshaw; Mr. DESIGNATION OF THE SPEAKER Rehberg; Mr. Carter; and Mr. Alexander. PRO TEMPORE The SPEAKER pro tempore. The Committee on Armed Services: Mr. Hunter, Chair has examined the Journal of the Chairman. The SPEAKER pro tempore laid be- last day’s proceedings and announces fore the House the following commu- Committee on Budget: Mr. Nussle, Chair- to the House his approval thereof. man. nication from the Speaker: Pursuant to clause 1, rule I, the Jour- WASHINGTON, DC, Committee on Education and the Work- January 6, 2005. nal stands approved. force: Mr. Boehner, Chairman. I hereby appoint the Honorable MICHAEL K. f Committee on Energy and Commerce: Mr. SIMPSON to act as Speaker pro tempore on Barton, Chairman; Mr. Hall; Mr. Bilirakis; this day. PLEDGE OF ALLEGIANCE Mr. Upton; Mr. Stearns; Mr. Gillmor; Mr. J. DENNIS HASTERT, The SPEAKER pro tempore. Will the Deal; Mr. Whitfield; Mrs. Cubin; Mr. Speaker of the House of Representatives. gentleman from South Carolina (Mr. -
Government $150,000 $ 30,000 (E-122
[ix] r.-} FiLv:::.loN No. Project No. A- 30 36 DATE 11/12/81 Project Director: Mr. Edwin Bethea )8YO31/Lab EDL/BDD Sponsor: U. S. Department of Commerce, Minority Business Development Agency Type Agreement: Grant No. 98-10-80018-01 dated 9/16/81 Award Period: From 8./1/81 To 7 /I3I * (Performance) 10 / 31 / 82 (Reports) Sponsor Amount: $150,000 Contracted through: Cost Sharing: $ 30,000 (E-122-111) 16 GTRUGIT Title: Technology Commercialization Center ADMINISTRATIVE DATA OCA Contact Faith G. Costello 1) Sponsor Technical Contact: 2) Sponsor Admin/Contractual Matters: - oio . Joyce Russman, Grants Specialist Protect Administrator US Dept. of Commerce (202) 377-3816 Minority Business Dev. Agency (same as for adm. contact) 14th & Constitution Ave NW Rm 5090 Washington, DC 20230 r iority Rating: N/A Security Classification: N/A RESTRICTIONS See Attached Gov't Supplemental Information Sheet for Additional Requirements. Travel: Ft-filitViravel must have prior approval — Contact OCA in each case. Domestic travel requires sponsor approval where total will exceed greater of S500 or 125% of approved proposal budget category. Equipment: Title vests with Government COMMENTS: Renewal of project no. A-2771, Grant No. 98-10-70002-00 fs. k .... ..., poi.., - t.t.i\i r,-)1 cn rc‘VE ,,'-', Reports Lor., Resear ch "IEGE:6 6D- COPIES TO: Administrative Coordinator Research Security Services EES Public Relations (2) Research Property Management R-414;14-6--eurffrITnator -f0C.A) Computer Input Accounting Legal Services (OCA) Project File ProcurementIEES Supply Services LibraryI. Other FOg GEORGIA INSTITUTE OF TECHVOLOGY OFFICE OF CONTRACT ADMINISTRATION SPONSORED PROJECT TERMINATION/CLOSEOUT SHEET Date 4/10/86 Project No. -
Daily Iowan (Iowa City, Iowa), 1940-07-27
Clcvckmd 1lldlan, i Partly Cloudy ,. Come Within ilal'-Game or lOW A-ParUy cloud, toda, aud j DetroU Tlpia tomorrow; cooler In IOUth portion , See 8&or, oil rue • Wa,. -- 10.., a Mornin, NeID,paJJe; , IOWA ' CITY, IOWA SATURDAY, JULY 27, 1940 11VE CENTS , ' VOLUME XL NUMBER 254 National Political Rouudup . Jf TH.: ASSOCIATED P~E88 "ABBIN,G.TON Secretary lfillltce to quit agricultural post !AI campaign for v ice presidency; .rues AAA will be used as po- -b It' rPowerfulSquadronOfftoMeet IIilcal machine, I COLORADO SPRINGS, COLO, Italian Planes Bomb GJ ra a Spreading Menace of Flotillas ,We/ldell Willkle's manllg~rs are ------- IIPOrted considering formation of I new porty, such as a "democra Se d P' td G d C .p t p Of Nazi Torpedo ,Motor Boats tic Wlily party," 10 enllble ,south- 611 democrats to vote fbr Wil,kle SUf.fers con reSt ent rante onscrl tton owers Admir41ty Acknowledges Loss or Crippling Of II!II yet retain their democratic Jt«islration, Major Attack ,* * * • Half of 21.Ship Convoy Before Combined WASWNGTON'-Paul V, Mc ~utl says country Is too confused In Two Da s Senate Military To Exempt Married Men J Raider Disruised as Sw~dish Air, Torp,edo Boat Attack Dl' issues ot recent ~olitical con ItDtlons for anyone to forecast y GAg "· S~ ril B·· h BY THE ASSOCIATED PRESS ilIe outcome of the president elec Itep0i18 From Spain roup rees FreIghter t {es at rltls LONDON, July 26-Britain and the Frenchmen under her lion now, "I'm going' to keep my flag manned for sea tonight a powerful squadron of French JIIIj\Ith shut until the country cools Indicate British Ship O M July 20 after men o'war to meet the new llnd spreading menace of flo- 1If," he says. -
Rolls-Royce Presentation CMSC Conference
Rolls-Royce Presentation CMSC Conference l1 July 2011 © 2011 Rolls-Royce plc The information in this document is the property of Rolls-Royce plc and may not be copied or communicated to a third party, or used for any purpose other than that for which it is supplied without the express written consent of Rolls-Royce plc. This information is given in good faith based upon the latest information available to Rolls-Royce plc, no warranty or representation is given concerning such information, which must not be taken as establishing any contractual or other commitment binding upon Rolls-Royce plc or any of its subsidiary or associated companies. You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) Rolls-Royce, A Brief History 1904 – Founded by Charles Rolls and Henry Royce Reliability Integrity Innovation 1914 – Commissioned by Britain to build aircraft engines 1941 – Teamed with Frank Whittle to build first Rolls-Royce gas turbine engine known as the Gloster Meteor 1953 – The Dart Engine was the first gas turbine engine for commercial aircraft and the Comet was the first turbojet to enter the transatlantic 1973 – Sold the car business 1995 – Bought Allison Engine Company in U.S. 2005 – Powered the maiden flight for the Airbus A380 double- decker aircraft 2008 – First Flight of F-35B Joint Strike Fighter LiftFan You created this PDF from an application that is not licensed to print to novaPDF printer (http://www.novapdf.com) Rolls-Royce - Indianapolis history Speedway -
Clough Announces Departure Slivers Eliminated F Arewell, Unfi Nished Business Addressed to Students from Technique by Dr
Tuesday,APRIL April Fools’FOOLS’ Day, 2008 Technique • Tuesday, April 1, 2008 • 1 C l o u g h “The South’s Liveliest College Newspaper” plans to steal the Volume 93, Issue 27 T, 8 pages page 3 ONLINE www.nique.net TECHNIQUEFooling Georgia Tech since 1911 Clough announces departure Slivers eliminated F arewell, unfi nished business addressed to students from Technique By Dr. G. Wayne Clough Institute President By Matthew Winkler “I stood on top of the Campanile, Editor-in-Chief Th is July I will be stepping down bare chested and waving a trident. from my position as president of On October 2, 1998, the Technique unveiled a a new feature Georgia Tech. My tenure here has In the end, the Almighty spared known as the Sliver. Originally it featured comments from been a wildly successful one and I have Tech for my resignation.” editors placed at the bottom of every page. Th is eventually made phenomenal progress in turning evolved in to the the Sliver Box as it is today, where members of the Tech communtiy can anonymously submit their random this campus into an internationally Dr. G. Wayne Clough lauded research university. However, comments online to be published every issue. Today marks before I leave, there are a few issues I Your Fearless Leader the end of that era. will resolve. After a run of nearly ten years, the Edititorial Board of First, I will personally coach our the Technique has elected to permanently eliminate the Sliver football team to victory against UGA. two hands. I was planning on fi nishing have traded our College of Computing Box from the pages of this fi ne publication. -
List of Aircraft Engine Manufacturers (Alphabetical)
List of aircraft engine manufacturers (alphabetical) This is a list of aircraft engine manufacturers both past and present. The most important ones are listed in bold text. A ABC Motors - UK ADC - UK Aero Adventure Aviation - USA Aerojet - USA Aeronautical Development Agency - India Aeronca - USA Airdisco - UK Alfa Romeo - Italy Allison Engine Company - USA Alvis - UK Antoinette - France Argus - Germany Armstrong Siddeley - UK Aspin - UK Austro-Daimler - Austria Avia - Poland B Beardmore - UK Bentley - UK Benz - Germany BHP - UK Blackburn - UK BMW - Germany Bramo - Germany Bristol Engine Company - UK Bristol Siddeley - UK British Anzani Engine Company - UK Bücker - Germany Buick - USA C Carden - UK Centurion - Germany CFM International (United States and France) Chevrolet - USA Chrysler - USA Cirrus - UK Clerget - France Colombo - Italy 1 Commonwealth Aircraft Corporation - Australia Continental Motors - USA Coventry Climax - UK Coventry Victor - UK Curtiss-Wright - USA Curtiss - USA D Daimler-Benz - Germany de Havilland - UK Douglas - UK CitiGlobalConnection - India E Elizalde - Spain Engine Alliance - USA EADS (European) F Farman - France Fiat - Italy Ford - UK Ford - USA Franklin - USA G Garrett AiResearch - USA General Electric Aircraft Engines - USA GE Honda Aero Engines LLC - USA German Aircraft GmbH - Germany General Motors - USA Glushenkov - Russia/Soviet Union Gnome - France Gnome-Rhone - France Green - UK Guiberson - USA H Hall-Scott - USA Heinkel-Hirth - Germany -
Research Report & Playbook
User Research Project: Part 1 Research Report & Playbook February 25, 2014 Background GT Experience User Experience Campus Playbook Library Renewal Next Steps Appendix table of contents Executive Summary 3 Background 8 Georgia Tech Experience 11 User Experience 30 Campus Plays 49 Library Renewal 69 Next Steps 88 Appendix 90 User Research Project: Part 1 | 2 Background GT Experience User Experience Campus Playbook Library Renewal Next Steps Appendix executive summary Objective Insights At a high level, the objective of the User Research Study is to understand • Boundaries between research, teaching, and learning are blurring. the research, teaching, and learning needs of various user groups on campus and identify space and service opportunities to support • As people become more specialized, they are more likely to work those needs. In parallel, the project will inform the Library Renewal in silos. Bringing them out requires effort. architectural design process and, with staff, design new staffing and • Mastering skills is just as important as mastering content. service models for Library and Learning Excellence (L/LE). • Physical and digital tools and spaces must work together seamlessly. • There are many resources and library services that students & Research Library Library Insights and Design Services faculty are not aware of but could benefit from. “Playbook” Input Model • Students should be able to apply their knowledge and skills across disciplines. • While collaboration is an important part of research, teaching, and Process learning, there is still a need for quiet, individual work – and the The research study will be conducted in collaboration with the Library environments to do it in. User Research Task Force and takes place in 2 parts. -
The Washington Park Fireproof Warehouse and Its Architect, Argyle E
Published by the Hyde Park Historical Society The Washington Park Fireproof Warehouse and its Architect, Argyle E. Robinson By Leslie Hudson building in Hyde Park is turning one Ahundred years old this year. This building doesn't call much attention to itself. Driving by you might notice its bright orange awning but, unless you have rented a space within it, you may never have stopped to study the structure. But the next time you pass by, do stop-it's a unique and important building that deserves a good long look. It is the Hyde Park Self Storage building at 5155 Sou th Cottage Grove Avenue, originally called the Washington Park Fireproof Warehouse. Construction of the Washington Park Fireproof Warehouse began in 1905 during a period when many household storage buildings were being erected in Chicago, especially in its southern residential areas. Other warehouses built during this storage building heyday were once located nearby on Cottage Grove and Drexel Avenues. Although these other warehouses have been demolished, the Washington Park Fireproof Warehouse survives, and even continues to operate as a storage warehouse-its original function. And, thanks to the building's sturdy design and construction, and careful stewardship by its owners over the years, the building's original exterior has The Washington Park Fireproof Warehouse in 1905. The building doubled in size and remained intact. Today the building looks took on its current appearance with the north addition, built in 1907. almost identical to its appearance in ~8 2 ~ «0 photographs from the early 1900s. most noteworthy features of the building and was The Washington Park Warehouse was constructed probably the work of northern European immigrants, in two phases. -
Magazine • March 1978
~~T MAGAZINE • MARCH 1978 if ... •• • . &•• f: Johnny Gresham north x northwest Where Environmentally Planned Office Space Creates A Successful Working Environment Durfee Building Triangle Building NIFDA Headquarters Building Gold Building Exchange Building Terminus Internationa] 1900 The Exchange Courtyard Building Tennis Club LEASING OFFICE SPACE BUILD TO SUIT LAND SALES north x northwest, inc. 1775 The Exchange. Suite 200 National Association of Atlanta, Georgia 30339 Industrial &i Office Parks (404) 952-9926 QMM QpAIKTO For Aluirmus of the "Old School" When you come to Atlanta for a Tech game you can be sure there will be a crowd. Not only at the game, but often in your hotel. Many hotels are so busy creating glamorous lobbies or catering to conventions that you and your accommodations take a back seat to the activity downstairs. You don't want the hassles. All you want is a chance to relax, and to enjoy the game. Now you can. Guest Quarters was created, and has flourished, quietly, because people are rediscovering how nice it feels to be a guest. We don't believe in huge lob bies or conventions. If we catered to them we couldn't cater properly to you, our guest. We're of the "Old School" because we treat every guest with the same unparalleled service, so characteristically Guest Quarters. At Guest Quarters our smal lest room is our suite. Every guest receives one, and for no more than the price of a single room. When you stay at Guest Quar ters for a Tech game, you can entertain in your spacious living room while you have privacy in the separate bedrooms. -
2006 FB.Pdf (3.823Mb)
2006 Georgia Tech Fact Book Fact Book 2006 Office of Institutional Research and Planning Georgia Institute of Technology Atlanta, Georgia 30332-0530 (404) 894-3311 Prepared By: Julie M. Clabby, Editor David H. Cauble Robert Reid Sara Reid Cassandra Spiller LaLeeta Sweeper Kimberly Wood Michael Young Sandi Bramblett, Director Copyright 2006 Georgia Tech is an equal employment/education opportunity institution. 1 2006 Georgia Tech Fact Book TABLE OF CONTENTS Quick Facts................................................................................................................ 3 General Information ............................................................................................... 13 Administration and Faculty ................................................................................... 27 Admissions and Enrollment ................................................................................... 57 Academic Information............................................................................................. 82 Student Related Information.................................................................................. 101 Financial Information.............................................................................................. 122 Research.................................................................................................................... 128 Facilities..................................................................................................................... 145 2 Quick Facts 2006