.: Bruce Pilkingtons XP-56 Black Bullet

The XP-56 Black Bullet was a unique prototype fighter interceptor built by Northrop. It was one of the most radical of the experimental aircraft built during World War II. The idea for this single-seat, initially tail-less, airplane originated in 1939 as the Northrop N2B model. It was designed around the Pratt & Whitney liquid-cooled X-1800 engine in a pusher configuration driving contra-rotating propellers. Design was ordered on June 22, 1940, and a prototype aircraft was ordered on September 26, 1940. Shortly after work had begun, Pratt & Whitney, however, stopped development of the X-1800. The Pratt & Whitney R-2800 engine was substituted, although it was considered not entirely suitable.

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