The Ki-62 was a light fighter designed in 1941 by T Koyama to compete with the Kawasaki Ki-61. Although this design appeared to be promising, its development was discontinued to enable Nakajima to concentrate on production of their Ki-43 and Ki-44. Later, the Ki-62's data and design features were incorporated in the Ki-84 design. One 1,175 hp Kawasaki Ha-40 liquid-cooled engine. Span 12 m (39 ft 4 7/16 in); length 8.75 m (28 ft 8 1/2 in). The Ki-63 was a projected version powered by a 1,050 hp Mitsubishi Ha-102 radial.
There was never a prototype made of the Ki.62. Seems it was a "paper project" that got assigned a specific "Ki" number in anticipation of a prototype, but Nakajima gave up on it (apparently in a dispute with Kawasaki, who had a stranglehold on the engine rights to production).
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