诺斯罗普YF-23 – 照片和视频

诺斯罗普/麦克唐纳道格拉斯 YF-23 是美国为美国空军（USAF）设计的单座双引擎隐形战斗机技术演示者。该设计入围美国空军的高级战术战斗机（ATF）比赛，与洛克希德YF-22争夺生产合同。建造了两个YF-23原型，绰号"黑寡妇II"和"灰色幽灵"。

源： 维基百科上的诺斯罗普 YF-23

这 诺斯罗普 YF-23 was a prototype fighter aircraft designed by Northrop Corporation for the United States Air Force’s Advanced Tactical Fighter (ATF) program. The YF-23 competed against the Lockheed YF-22 for the contract to produce the next-generation air superiority fighter for the USAF. The YF-23 was a stealthy, twin-engine, twin-tail aircraft with a diamond-shaped wing and a V-shaped tail. The YF-23 had two variants: one with Pratt & Whitney YF119 engines and one with General Electric YF120 engines.
The YF-23 flew for the first time on August 27, 1990, and completed six test flights before the ATF program was concluded in April 1991. The USAF selected the YF-22 as the winner of the ATF competition, and the YF-23 program was canceled. The two YF-23 prototypes were retired and sent to museums, where they remain on display to this day.