The Lockheed/Boeing/General Dynamics YF-22 is an American single-seat, twin-engine fighter aircraft technology demonstrator designed for the United States Air Force (USAF). The design was a finalist in the USAF's Advanced Tactical Fighter competition, and two prototypes were built for the demonstration/validation phase of the competition. The YF-22 won the contest against the Northrop YF-23, and entered production as the Lockheed Martin F-22 Raptor. The YF-22 has a similar aerodynamic layout and configuration as the F-22, but with differences in the position and design of the cockpit, tail fins and wings, and in internal structural layout.
In the 1980s, the USAF began looking for a replacement for its fighter aircraft, especially to counter the advanced Su-27 and MiG-29. A number of companies, divided into two teams, submitted their proposals. Northrop and McDonnell Douglas submitted the YF-23. Lockheed, Boeing and General Dynamics proposed and built the YF-22, which, although marginally slower and having a larger radar cross-section, was more agile than the YF-23. Primarily, for this reason, it was picked by the Air Force as the winner of the ATF in April 1991. Following the selection, the first YF-22 was retired to a museum, while the second prototype continued flying until an accident relegated it to the role of an antenna test vehicle.
![Lockheed YF-22](https://cdn.calendarz.com/uploads/events/september/29/93918/lockheed-yf-22_compressed.jpg)
1990Sep, 29
The YF-22, which would later become the F-22 Raptor, flies for the first time.
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Events on 1990
- 2Aug
Gulf War
Iraq invades Kuwait, eventually leading to the Gulf War. - 8Aug
Gulf War
Iraq occupies Kuwait and the state is annexed to Iraq. This would lead to the Gulf War shortly afterward. - 23Aug
Gulf War
Saddam Hussein appears on Iraqi state television with a number of Western "guests" (actually hostages) to try to prevent the Gulf War. - 28Aug
Kuwait
Iraq declares Kuwait to be its newest province. - 28Nov
Margaret Thatcher
British Prime Minister Margaret Thatcher resigns as leader of the Conservative Party and the prime ministry, and is succeeded as both by John Major.