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The Lockheed/ Boeing/ General Dynamics YF-22 is an American single-seat, twin-engine, stealth fighter technology demonstrator prototype designed for the United States Air Force (USAF). The design team, with Lockheed as the prime contractor, was a finalist in the USAF's Advanced Tactical Fighter (ATF) competition, and two prototypes were built ...
YF119-PW-100L: Prototype engine for the YF-22; rated 30,000 lbf thrust class. YF119-PW-100N: Prototype engine for the YF-23; rated 30,000 lbf thrust class. F119-PW-100: Production engine for the F-22A with larger fan and increased bypass ratio (BPR) rated for 35,000 lbf thrust class. YF119-PW-611: Prototype engine for the X-35.
A YF-22 in the foreground with a YF-23 in the background. The two contractor teams submitted evaluation results and their PSC proposals for full-scale development in December 1990, [57] and on 23 April 1991, Donald Rice, the Secretary of the Air Force announced that the YF-22 team was the winner. [71]
The YF120 had different nozzle designs for the YF-22 and YF-23 technology demonstrator prototypes tailored to the specific airframe. The YF120 on the YF-22, registration number N22YF, was equipped with thrust vectoring nozzles. The engine for the YF-22 featured a two-dimensional thrust vectoring nozzle that could vector in the pitch direction ...
The ATF engine was also being competed which is why there were two YF-22s and YF-23s, one for each engine option. The winner of the engine competition would be announced alongside the ATF winner. The ATF SPO had originally planned to select 4 companies as finalists for Dem/Val, but this was judged too expensive and unnecessary, so they reduced ...
The first YF-23 with P&W engines supercruised at Mach 1.43 on 18 September 1990 and the second YF-23 with GE engines reached Mach 1.72 on 29 November 1990. [N 11] [54] [56] The first YF-22 with GE engines achieved Mach 1.58 in supercruise and the second YF-22 with P&W engines also achieved Mach 1.43. Maximum speed of both prototype designs in ...
The V-22 Osprey is a troop transport with a helicopter's versatility and a turboprop's speed. But the V-22 has crashed several times since becoming operational in 2007, killing over 50 people.
General Electric developed a variable cycle engine, known as the GE37 or General Electric YF120, for the YF-22/YF-23 fighter aircraft competition, in the late 1980s. GE used a double bypass/hybrid fan arrangement, but never disclosed how they exploited the concept.