The aircraft packed a pair of Pratt & Whitney YF119-PW-100 engines that gave the YF-23 to supercruise at Mach 1.43 (or about 1,088 miles per hour), meaning that it could maintain that airspeed ...

The Northrop/McDonnell Douglas YF-23, a fifth-generation stealth fighter developed in the late 1980s as part of the U.S. Air ...

The Boeing YF-118G "Bird of Prey" was an experimental aircraft developed in the 1990s to test advanced stealth technologies.

For a brief shining moment, the U.S. Air Force lay on the verge of flying the fastest, arguably most badass fighter jet of all time. The jet, the YF-12A, was one of several proposed variants in ...