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
The YF-22 (foreground) and YF-23 (background)
Diagram of several designs submitted for request for information (RFI)
ATF SPO Patch, 1990
Lockheed's submission for Dem/Val RFP. The eventual YF-22 would have a completely different configuration.
General Electric YF120
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The General Electric YF120, internally designated as GE37, was a variable cycle afterburning turbofan engine designed by General Electric Aircraft Engines in the late 1980s and early 1990s for the Uni
YF120 at the National Museum of the U.S. Air Force
The second YF-23 (left), nicknamed “Spider”, was powered by two YF120 engines.
The first YF-22 (right), registration number N22YF, was powered by two YF120 engines.
The YF120 on the YF-22, registration number N22YF, was equipped with thrust vectoring nozzles.