The first YF-23, with Pratt & Whitney engines, supercruised at Mach 1.43 on Sep. 18, 1990, while the second, with General Electric engines, reached Mach 1.6 on Nov. 29, 1990. By comparison ...

If pushed, could the YF-23 have kept up with the YF-22? It’s very possibly. But we’ll never get an answer. About the Author: Harrison Kass Harrison Kass is a prolific defense writer with over ...

Two teams competed: Northrop Grumman with the YF-23 and Lockheed Martin with the YF-22, which would become the F-22 Raptor.

Summary: In the 1980s, the U.S. Air Force sought to replace the F-15 with a new fighter jet, spurring a competition between the YF-23 and YF-22. Northrop Grumman's YF-23, known for its stealth and ...

Credit: Illustration by Colin Throm/AW&ST based on drawings by Darold B. Cummings/ForzAero. When the U.S. Air Force announced Boeing as the winner of the Next-Generation Air Dominance fighter ...

But sources close to the studies, which were kicked off by the USAF's recently issued request for information, say Northrop Grumman now includes a YF-23-based "regional" bomber concept among its ...