Rikugun Ki-93 Heavy Fighter / Anti-Shipping Attack Aircraft Prototype
Intended for the Imperial Japanese Army of World War 2, the Rikugun Ki-93 heavy fighter only saw one completed prototype before the end, a second laying unfinished.
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The heavy fighter as a military aircraft class was a constant throughout the inventories of the air services participating in World War 2. Japanese seemed to take a particular interest in the type and held a stable of several strong performers during the period while other designs either failed outright or were ultimately abandoned as the war progressed. The Rikugun Ki-93 was another entry into the category but this design only ever reached the prototype stage with one example completed and a second left unfinished by war's end.
The Ki-93 began life through an initiative by the Japanese Army Aerotechnical Research Institute in 1941. Design studies were undertaken to produce an advanced twin engine, all-metal heavy-class fighter to be powered by a pair of Mitsubishi radials and work spanned into 1943 before a contract was formally issued in February covering two prototypes and one test article.
The finalized design came to be of a conventional heavy fighter arrangement: a slim fuselage would feature a crew of two in tandem (back-to-back) sitting under a heavily-glazed canopy, engines mounted under low-set monoplane wing assemblies, and a "tail dragger" undercarriage used. The tail unit was traditional with its single fin and low-mounted stabilizers. Both the cockpit and wing mainplanes were affixed ahead of midships. Overall dimensions included a length of 46.7 feet, a wingspan of 62.3 feet and a height of 16 feet. Empty weight was 17,000 lb against a gross weight of 25,220 lb.