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The Pratt & Whitney Canada PW800 is a turbofan engine in the 10,000 lbf (45 kN) thrust class. The engine is under development by Pratt & Whitney Canada. It was previously known by its company designation, the PW-10X. In December 2009, the core of the engine had begun testing, despite having no announced application. On October 20, 2014, the engine was selected by Gulfstream for its new G500 and G600.〔(【引用サイトリンク】title=Gulfstream's Pratt & Whitney Choice Challenges Rolls-Royce's Dominance )〕 ==Design and development== The development of the PW800 stretches back to demonstration projects in 1999, soon after the development of the PW600 very light engine and the PW300 business jet engine.〔Norris, Guy (2008). (Five Engine Companies Chase The Same Bizjet Market ). ''Aviation Week & Space Technology''. 4 Oct 2008. Accessed 29 Dec 2009.〕 The PW800 was originally going to be a geared turbofan, like its larger sibling the PW1000G, but later announcements revealed that it was going to be a more traditional turbofan engine. However, the PW800 would still share a common core with the geared PW1000G.〔 The PW800 core was to be the basis for the Pratt & Whitney Canada PW180 turboprop engine proposed for the Airbus A400M, however the Europrop TP400 was selected instead.〔P&WC PW800. Jane's Aero Engines. Last Modified 13 Oct 2009. Accessed 29 Dec 2009.〕 In 2008, the PW810 variant was announced as the engine for the Cessna Citation Columbus business jet with an anticipated first flight of 2011.〔 However Cessna canceled the program in 2009, and with that cancellation, Pratt & Whitney announced a suspension in development for the PW800 engine.〔Warwick, Graham and Wilson, Benet (2009). (Cessna Citation Columbus Program Killed ). ''Aviation Week & Space Technology''. 10 July 2009. Accessed 29 December 2009.〕 Despite this, Pratt & Whitney later announced that core testing was beginning before the end of 2009.〔O'Keefe, Niall (2009). (PW800 core tests imminent: Pratt & Whitney ). ''Flight International''. 9 Oct 2009. Accessed 29 Dec 2009.〕 In December 2009, PWC announced that the core testing had begun.〔(Pratt & Whitney Begins Testing of Advanced Core for PurePower(R) Engine Family ). Press Release. 21 Dec 2009. Accessed 30 Dec 2009.〕 Few details about the design of the engine had been released by the end of 2009, but it had been announced that the high pressure spool of the engine would have eight compressor stages and two turbine stages.〔 Photos have been released revealing that the fan will have 20 wide-chord, metallic blades.〔 PWC has also revealed that the engine will feature a version of their Technology for Advanced Low NOx (TALON) combustor, which is designed to rapidly quench the combusted air to limit the production of Nitrogen oxide (NOx). A version of this combustor is already in service with the Pratt & Whitney PW4000.〔Schweitzer, Jeffrey K. (2003). PROPULSION TECHNOLOGY READINESS FOR NEXT GENERATION TRANSPORT SYSTEMS. AIAA/ICAS International Air and Space Symposium and Exposition: The Next 100 Y, 14–17 July 2003, Dayton, Ohio. AIAA 2003-2787.〕 PWC states that the engine will exceed International Civil Aviation Organization (ICAO) standards for NOx by 50% and Carbon monoxide (CO) by 35%. They also state that the engine should meet upcoming Stage IV noise requirements.〔(PW800 ). Pratt & Whitney Canada Website. Accessed 30 Dec 2009.〕 MTU Aero Engines has a 15% share in the program, developing and producing the engine's high-pressure compressor and the low-pressure turbine. Pratt & Whitney Canada (P&WC) announced on February 17, 2015 that it had received Transport Canada type certification for its PW814GA and PW815GA engines, which will power the new Gulfstream G500 (range of 5,000 nmi; 9260 km) and G600 (range of 6,200 nmi; 11,400 km) business jets, respectively.〔(【引用サイトリンク】title=Pratt & Whitney Canada - press-releases )〕 On May 18, 2015, the Gulfstream G500 took its first flight using the PW814A engine. So far, the PW800 engine family has surpassed 3,600 hours of full engine testing, including rigorous endurance testing that simulates a multitude of aircraft missions and environments, and more than 470 hours on P&WC's 747 Flying Test Bed.〔http://prattwhitney.mwnewsroom.com/press-releases/successful-gulfstream-g500-first-flight-a-new-milestone-for-purepower-pw800-eng-201505181007831001?lang=en-US〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pratt & Whitney Canada PW800」の詳細全文を読む スポンサード リンク
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