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
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
Advanced Tactical Fighter
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The Advanced Tactical Fighter was a program undertaken by the United States Air Force to develop a next-generation air superiority fighter to replace the F-15 Eagle. The proposed fighter was intended
Northrop YF-23
…demonstrator designed for the United States Air Force (USAF). The design team, with Northrop as the prime contractor, was a finalist in the USAF's Advanced Tactical Fighter (ATF) demonstration and validation competition, battling the Lockheed-led YF-22 team for full-scale development and production. Nicknamed "Black Widow…
The YF-22 (foreground) and YF-23 (background)
ATF SPO Patch, 1990
Lockheed's submission for Dem/Val RFP. The eventual YF-22 would have a completely different configuration.