Two prototype engine designs, the Pratt & Whitney YF119 and General Electric YF120, were developed and tested in the program. Prior to its selection as the winner of the ATF competition, the F-22 team conducted a 54-month demonstration/validation program involving the design, construction, and flight testing of two YF-22 prototype aircraft. The teaming arrangement, still in place, has allowed unprecedented industry cost sharing and takes advantage of the companies' strengths in advanced technology application, production capability, and systems integration. The F-22 Team was formed in 1986, when Lockheed, Boeing, and General Dynamics (now Lockheed Martin Tactical Aircraft Systems) joined forces for the ATF competition.
![f 22 raptor demonstration f 22 raptor demonstration](https://4.bp.blogspot.com/-bU5N6lohGJk/WLjzi396YfI/AAAAAAAAGw4/8jgXXAgmvqk3Awm8IDZXATCIJUHNDGjrACLcB/s1600/Raptor_Schedule_2017.jpg)
The FY'96 budget request was reduced by the Department of Defense, which necessitated a third rephase of the F-22 program. The Air Force awarded the team an Engineering and Manufacturing Development (EMD) contract on August 2, 1991.Īs the result of a Fiscal Year '93 funding shortfall due to cost increases and a Congressional budget cut, and two additional budget cuts in FY '94 and FY '95, the F-22 EMD program schedule was rephased in early 1993 and again in mid 1994. The team was selected by the Air Force on April 23, 1991, as the winner of its Advanced Tactical Fighter (ATF) competition. Lockheed Martin Aeronautical Systems, Lockheed Martin Tactical Aircraft Systems, and Boeing Defense & Space Group's Military Airplanes Division are teamed to develop the F-22 as a replacement for the F-15 fighter currently in use by the U.S.
![f 22 raptor demonstration f 22 raptor demonstration](https://wallup.net/wp-content/uploads/2018/03/20/327000-F-22_Raptor-military_aircraft-aircraft-US_Air_Force.jpg)
F-22 NEXT-GENERATION AIR DOMINANCE FIGHTER