The Ki-28 was Kawasaki's competitor for a replacement fighter in 1935 for the Japanese Army Air Force (JAAF). Conpeting against the Mitsubishi Ki-33 and the Nakajima Ki-27, all three aircraft were low wing monoplane design and similar in performance but the Ki-27 won due to its manoeuverability. The Ki-28 was powered by an 800 hp Kawasaki Ha-9-IIa liquid cooled engine.
Ki-28 Engine 1 x Kawasaki Ha-9-IIa 800hp 12 cyl Length 12 m. Wingspan 7.9 m Wing area 19 sq.m Height 2.6 m Empty weight 1420 kg Max Take off Weight 1760 kg Max Speed 485 km/hr. Range 1000 km. Ceiling 11000 m Crew 1.