The YF-23 “Black Widow II” was a prototype stealth fighter that lost the Advanced Tactical Fighter competition to the F-22 ...

Summary: Among aviation enthusiasts, Northrop Grumman’s YF-23 has achieved legendary status due to its performance and the fact that only two prototypes were built before the program was discontinued.

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 ...

The Lockheed YF-22 and Northrop YF-23 both met U.S. Air Force requirements for the Advanced Tactical Fighter. Credit: U.S. Air Force Military aircraft competitions are decided by more than just design ...

As the Cold War climaxed in the 1980s, the U.S. was engaged in an arms race with a hollowed-out Soviet Union. Despite having recently fielded fourth-generation fighters like the F-14, F-15, F-16, and ...