Northrop Grumman’s YF-23 Prototype was by all accounts an impressive machine with speeds of Mach 2.25 and a high 1.36 thrust-to-weight ratio, yet the stealth fighter jet wound up “losing” an intense ...

Northrop Grumman's YF-23, known for its stealth and sleek design, achieved impressive speeds but lacked the agility and thrust vectoring of its competitor, Lockheed Martin’s YF-22, or F-22.

Chief configuration designer for the YF-23, Northrop’s contender for the Air Force’s Advanced Tactical Fighter (ATF) competition won by Lockheed’s F-22, Cummings continues to be active in aircraft ...