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Mitsubishi Ki-83

From Wikipedia, the free encyclopedia
Japanese heavy fighter prototype in WWII
Ki-83
A Ki-83 in American markings after the war.
General information
TypeLong rangeheavy fighter
ManufacturerMitsubishi
StatusPrototype
Number built4
History
First flight18 November 1944

TheMitsubishi Ki-83 (キ83) was a Japanese experimental, long-rangeheavy fighter designed near the end of World War II that did not reach production status.

Design and development

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The Mitsubishi Ki-83 was designed as a long-range heavy fighter and built by a team, led byTomio Kubo, designer of the highly successfulMitsubishi Ki-46. The design was a response to a 1943 specification for a new heavy fighter with great range. The first of fourprototypes flew on 18 November 1944.[1] The machines displayed remarkable maneuverability for aircraft of their size, being able to execute a 671 m (2,200 ft) diameter loop in just 31 seconds at a speed of over 644 km/h (400 mph).[2] The Ki-83 carried a powerful armament of two 30 mm (1.18 in) and two 20 mm cannon in its nose.[3]

Despite the bomb-ravaged Japanese manufacturing sector, plans for the Ki-83 to enter production were underway when Japan surrendered on 15 August 1945.

Both the existence and performance of the Ki-83 were little known during the War, even in Japan. It was completely unknown inAllied military aviation circles – as demonstrated by the fact that the Ki-83 had not been given areporting name. Most early photographs of the type were taken during the post-war occupation of Japan, when the four prototypes were seized by theUnited States Army Air Forces and repainted with USAAF insignia. When they were evaluated by U.S.aeronautical engineers and other experts, a Ki-83, using high-octane fuel, reached a speed of 762 km/h (473 mph) at an altitude of 7,000 metres (23,000 ft).[1][2][4][5]

A Ki-83 during a postwarUSAAF evaluation flight.

Variants

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  • Ki-83 experimental long-rangeheavy fighter, four prototypes built.
  • Ki-95 projected reconnaissance version, none built.[6]
  • Ki-103 projected development, none built.[6]

Specifications (Ki-83)

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Data fromJapanese Aircraft of the Pacific War[7]

General characteristics

  • Crew: 2
  • Length: 12.5 m (41 ft 0 in)
  • Wingspan: 15.5 m (50 ft 10 in)
  • Height: 4.6 m (15 ft 1 in)
  • Wing area: 33.5 m2 (361 sq ft)
  • Empty weight: 5,980 kg (13,184 lb)
  • Gross weight: 8,795 kg (19,390 lb)
  • Max takeoff weight: 9,430 kg (20,790 lb)
  • Powerplant: 2 ×Mitsubishi Ha-43 Ru (Ha211) 18-cylinder air-cooledradial piston engines, 1,600 kW (2,200 hp) each for take-off
1,540 kW (2,070 hp) at 1,000 m (3,300 ft)
1,440 kW (1,930 hp) at 5,000 m (16,000 ft) and 6,400 m (21,000 ft)
1,280 kW (1,720 hp) at 9,500 m (31,200 ft)
  • Propellers: 4-bladed constant-speed propellers

Performance

  • Maximum speed: 704.5 km/h (437.8 mph, 380.4 kn) at 9,000 m (30,000 ft)
655 km/h (407 mph; 354 kn) at 5,000 m (16,000 ft)
  • Cruise speed: 450 km/h (280 mph, 240 kn) at 4,000 m (13,000 ft)
  • Range: 1,953 km (1,214 mi, 1,055 nmi)
  • Ferry range: 3,500 km (2,200 mi, 1,900 nmi)
  • Service ceiling: 12,660 m (41,540 ft)
  • Time to altitude: 10,000 m (33,000 ft) in 10 minutes
  • Wing loading: 263 kg/m2 (54 lb/sq ft)
  • Power/mass: 0.35 kW/kg (0.21 hp/lb)

Armament

See also

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References

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  1. ^abFrancillon 1979, p. 192
  2. ^abGreen 1961, p. 58
  3. ^Pearce, William (30 September 2013)."Mitsubishi Ki-83 Heavy Fighter".Old machine press. Retrieved2 June 2016.
  4. ^Green & Swanborough 1976, pp. 53, 56.
  5. ^FAOW 1976, p. 50.
  6. ^abFrancillon 1979, p. 193.
  7. ^Francillon 1979, p. 194.

Bibliography

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  • Francillon, René J. (1979).Japanese aircraft of the Pacific War. London: Putnam.ISBN 0-370-30251-6.OCLC 6124909. (new edition 1987 by Putnam Aeronautical Books,ISBN 0-85177-801-1.)
  • Green, William (1961).War Planes of the Second World War, Volume Three: Fighters. Macdonald & Co.ISBN 0-356-01447-9.OCLC 655407936.{{cite book}}:ISBN / Date incompatibility (help)
  • Green, William; Swanborough, Gordon (1976).JWW2 Aircraft Fact Files: Japanese Army Fighters, Part 1. London: Macdonald and Jane's.ISBN 0-356-08224-5.OCLC 820486093.
  • Army Experimental Fighters (1). Famous Airplanes of the World Series 1. Tokyo: Bunrin-Do. August 1976.

External links

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