Republic XF-91 – 照片和视频

这 共和国 XF-91 雷电受体 （原名XP-91）是共和国航空研制的混合推进原型拦截机。飞机在大多数飞行中将使用喷气发动机，以及四个小型火箭发动机集群，在爬升和拦截过程中增加推力。由于当代喷气发动机性能的迅速提高，设计在完成时已基本过时，只制造了两个原型机。其中之一是第一架在水平飞行中超过马赫1的美国战斗机。

源： 维基百科上的共和国 XF-91

这 共和国 XF-91 雷电受体 was a prototype interceptor aircraft that used a combination of jet and rocket propulsion. It was developed by Republic Aviation in the late 1940s and early 1950s, but it was canceled after only two prototypes were built. The XF-91 was the first American fighter to exceed Mach 1 in level flight, and it had a unique inverse tapered wing design that improved its low-speed performance and stability. The XF-91 was intended to intercept high-altitude bombers, but it faced competition from other jet fighters and missiles, and it became obsolete as jet engine technology advanced rapidly. The XF-91 was an innovative and experimental aircraft that demonstrated some of the challenges and possibilities of mixed-propulsion flight.