411th Flight Test Squadron
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The 411th Flight Test Squadron is a United States Air Force squadron assigned to the 412th Operations Group of Air Force Materiel Command, stationed at Edwards Air Force Base, California. It conducted
411th Flight Test Squadron F-22A Raptor
411th Flight Test Squadron
The YF-22 and YF-23 in formation during flight testing in the early 1990s
The second F-22, tail number 91-4002, assigned to the 411th FLTS
Northrop YF-23
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The Northrop–McDonnell Douglas YF-23 is an American single-seat, twin-engine, stealth fighter prototype technology demonstrator designed for the United States Air Force. The design team, with Northrop
411th Flight Test Squadron
…stationed at Edwards Air Force Base, California. It conducted the Advanced Tactical Fighter program flyoff competition between the Lockheed YF-22 and Northrop YF-23 prototypes. Following the completion of the competition, the squadron has conducted testing of the Lockheed Martin F-22 as part of the F-22 Combined…
YF-23 flying over Edwards Air Force Base
Diagram of several designs submitted for ATF RFI, showing the comparatively small sizes of Northrop's initial designs
From left to right, flat-plate models of Northrop's AMF, USF ("Christmas Tree"), and HSF design concepts. HSF was the preferred concept by 1985.
Northrop's DP110 submission for Dem/Val RFP, which was similar to the eventual YF-23