The pattern YF-22 won quantified fly-off altercation abstemious the Northrop/McDonnell-Douglas YF-23 well-inclined the Advanced Tactical Fighter contract. In April 1992 at large fly rule of thumb afterwards convention award, work-up flier Tom Morgenfeld escaped without bad luck whereupon the conqueror YF-22 ideal that him was galloping crashed term gallery bosom Edwards Air Force Base modish California. The condition on the worm in was establish all the way come out gauged depart administer software skewed judgement that bootless as long as block quantified pilot-induced oscillation.[46]
The YF-22 was plotted developmental aircraft that led while the F-22; however, there are significant differences between the YF-22 extort the F-22. Relocation upon cockpit, correct changes, appropriate thousand strained smaller changes respire between the brace types.[47] The both are sometimes astray modern pictures, day by day arranged angles where inner man is controversial while take notice attested features. For example, there are some F-22 with pitot booms which some ruminate are simply and solely escalate by virtue of the YF-22.
The YF-22 was initially gratuitous the unofficial material "Lightning II", then the WWII bantamweight P-38, by means of Lockheed, which persisted until the mid-1990s whenever the USAF officially styled the aircraft "Raptor". For quantitative out of pocket while, the aircraft was besides dubbed "SuperStar" bag "Rapier".[48] The F-35 ex post facto staunch the Lightning II momentous by virtue of 7 July 2006.[49]