Faster, stealthier, and futuristic, the YF-23 was the stealth fighter that should have replaced the F-15. But despite its ...

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

While the Raptor has evolved into the single most capable air superiority fighter ever built, the YF-23 design—especially when combined with General Electric’s YF-120 variable cycle engines ...

In 1991, the U.S. Air Force staged a competition with far-reaching consequences. It was ta fly-off between the Lockheed YF-22 and Northrop/McDonnell Douglas YF-23 demonstration fighters.

Back in 1997, the US Air Force had to choose between the F-22 Raptor and the YF-23 for its fifth-generation fighter. The YF-23 had a greater flight range, giving the fighter the potential to ...

The Raptor (which was originally intended to be ... the slightly stealthier and faster, but less agile YF-23 from Northrop (the maker of the B-2 Spirit stealth bomber) and McDonnell Douglas.

the YF-22 and the YF-23. The Lockheed YF-22 was ultimately selected in 1991 with the first F-22A being delivered for flight testing in 1997. The Raptor is equipped with two Pratt & Whitney F119-PW ...

The Raptor was all about air-to-air combat from ... culminating in the flight test of two demonstration prototypes, the YF-22 and YF-23. The Lockheed-led team used thrust-vectoring nozzles on ...

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 ...