Mitsubishi Ki-30

Ki-30
Mitsubishi Ki-30
Role	Light bomber
Manufacturer	Mitsubishi
First flight	28 February 1937
Introduction	January 1938
Primary users	Imperial Japanese Army Air Force Royal Thai Air Force
Produced	1938-1941
Number built	704

The Mitsubishi Ki-30 (九七式軽爆撃機, Kyunana-shiki keibakugekiki^?) was a Japanese light bomber of World War II. It was a single-engine, mid-wing, cantilever monoplane of stressed-skin construction with a fixed tailwheel undercarriage and a long transparent cockpit canopy. The type had significance in being the first Japanese aircraft to be powered by a modern two-row radial engine. During the war, it was known by the Allies by the name Ann.

The Ki-30 was developed in response to a May 1936 Imperial Japanese Army specification to replace the Kawasaki Ki-3 light bomber with a completely indigenously designed and built aircraft. Mitsubishi and Kawasaki were requested to build two prototypes each by December 1936. The specification called for a top speed of 400 km/h (250 mph) at 3,000 m (9,840 ft); normal operating altitude from 2,000 m (6,560 ft) to 4,000 m (13,130 ft), the ability to climb to 3,000 m (9,840 ft) within eight minutes and an engine to be selected from the 634 kW (850 hp) Mitsubishi Ha-6 radial, 615 kW (825 hp) Nakajima Ha-5 radial, or 634 kW (850 hp) Kawasaki Ha-9-IIb liquid-cooled inline engines, a normal bomb load of 300 kg (660 lb) and a maximum of 450 kg (990 lb), one forward-firing machine gun and one flexible rearward-firing machine gun, the ability to perform 60° dives for dive bombing, and a loaded weight less than 3,300 kg (7,280 lb).

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