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      Rikugun Ki-93 Heavy Fighter / Anti-Shipping Attack Aircraft Prototype  

    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.





     Updated: 5/22/2016; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com


    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.


    Rikugun Ki-93 Technical Specifications


    Service Year: 1945
    Type: Heavy Fighter / Anti-Shipping Attack Aircraft Prototype
    National Origin: Imperial Japan
    Manufacturer(s): Army Aerotechnical Research Institute - Imperial Japan
    Production Total: 1



    Structural (Crew Space, Dimensions and Weights)


    Operating Crew: 2
    Length: 46.65 feet (14.22 meters)
    Width: 62.34 feet (19.00 meters)
    Height: 15.91 feet (4.85 meters)

    Weight (Empty): 16,954 lb (7,690 kg)
    Weight (MTOW): 25,221 lb (11,440 kg)

    Installed Power and Standard Day Performance


    Engine(s): 2 x Mitsubishi Ha-214 18-cylinder air-cooled radial piston engines developing 1,970 horsepower each (take-off power).

    Maximum Speed: 388 mph (625 kph; 337 knots)
    Maximum Range: 1,864 miles (3,000 km)
    Service Ceiling: 39,534 feet (12,050 meters; 7.49 miles)
    Rate-of-Climb: 2,140 feet-per-minute (652 m/min)

    Armament / Mission Payload


    Ki-93-Ia Bomber Destroyer:
    1 x 57mm Ho-402 cannon in ventral gondola structure
    2 x 20mm Ho-5 cannon in wing roots
    1 x 12.7mm Ho-103 machine gun on trainable mounting in rear cockpit.

    Ki-93-Ib Anti-Shipping Variant:
    1 x 75mm cannon in ventral gondola
    2 x 550lb conventional drop bombs

    Global Operators / Customers


    Imperial Japan (cancelled)

    Model Variants (Including Prototypes)


    Ki-93 - Base Series Designation; one prototype complete

    Ki-93-Ia - Heavy Fighter variant armed with 1 x 57mm cannon in ventral gondola and 2 x 20mm cannons in wing roots.

    Ki-93-Ib - Anti-Shipping variant armed with 1 x 75mm cannon in ventral gondola; support for 2 x 550 lb bombs.

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