Fp-91

An American experimental jet-powered fighter aircraft developed by Northrop. It was designed to be a high-altitude interceptor, but the project was canceled due to performance issues and the development of other more capable fighters.

Fp-103

An American experimental jet-powered fighter aircraft developed by Lockheed. It was designed to be a high-speed, high-altitude interceptor, but the project was canceled due to performance issues and the development of other more capable fighters.

Bw. 147

A German experimental fighter aircraft project by Blohm & Voss during World War II. It was designed to be a fast, maneuverable fighter with a unique swept-wing design.

Bw. 149

A German experimental fighter aircraft project by Blohm & Voss during World War II. It was designed as a high-speed, high-altitude interceptor with a powerful jet engine.

Bw. 151

A German experimental fighter aircraft project by Blohm & Voss during World War II. It was designed as a high-speed, high-altitude interceptor with a unique swept-wing design.

Bw. 152

A German experimental fighter aircraft project by Blohm & Voss during World War II. It was designed as a high-speed, high-altitude interceptor with a powerful jet engine.

Bw. 153

A German experimental fighter aircraft project by Blohm & Voss during World War II. It was designed as a high-speed, high-altitude interceptor with a unique swept-wing design.

Bw. 145

A German experimental fighter aircraft project by Blohm & Voss during World War II. It was intended to be a fast, high-altitude interceptor powered by a powerful BMW 801 engine.