Mitsubishi Ki-83 (twin engine)
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No Freeman Photo

Note: the background of this photo resembles Freeman Field, but no proof.



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The KI-83 was tested by both the AAF & the Navy.  The AAF tested the aircraft at Freeman Field, Indiana and during the testing process they fueled it with the standard avgas used at the time which was 115/145 octane.  Japanese fuel at the time the KI-83 was designed was lucky to contain 2/3 of this octane rating.  The Japanese were hoping for an airspeed in excess of 400 MPH with their fuel but when tested with the high octane U.S. fuel it did indeed as recorded reach 470 MPH.

Mitsubishi Ki.83

The Ki.83 was designed as an twin-engined, heavily armed long-range fighter. It was one of the most advanced Japanese aircraft of WWII, fast and very maneuvrable. But it was still in development when the war ended. Four built.

Type: Ki.83
Function: fighter
Year: 1944 Crew: 1 Engines: 2 * 2200hp Mitsubishi Ha-211-Ru
Wing Span: 15.50m Length: 12.50m Height: 4.60m Wing Area: 33.52m2
Empty Weight: 5980kg Max.Weight:
Speed: 704km/h Ceiling: 10000m Range: 2800km
Armament: 2*g30mm 2*g20mm 2*b50kg

Crew: 2, engine: 2 x Mitsubishi Ha-211 Ru, 1650kW, wingspan: 15.5m, length: 12.5m, height: 4.6m, wing area: 33.52m2, start mass: 8795-9430kg, empty mass: 5980kg, max speed: 705kph, cruise speed: 450kph, ceiling: 12660m, range w/max.fuel: 2175km, range w/max.payload: 1953km, armament: 2 x 30mm cannons, 2 x 20mm cannons, 2 x 50-kg bombs