Nakajima J5N Tenrai

The Nakajima J5N Tenrai, meaning Heavenly Thunder, was an abandoned Japanese prototype fighter of the Second World War, developed as a single-seat twin-engine interceptor against the Boeing B-29 Superfortress. The navy issued its 18-Shi specification in spring 1943, and Nakajima proposed a slightly smaller aircraft based on the J1N1 Gekko night fighter, with a low wing carrying two Homare 21 radial engines, large four-blade propellers and a nose battery of two 30 mm and two 20 mm cannon. Six prototypes were authorized, but progress was impeded by engines that failed to deliver their rated power, and the programme was abandoned before it entered service.