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Mitsubishi J4M

J4M Senden
Role Fighter aircraft
Manufacturer Mitsubishi
Primary user Imperial Japanese Navy (intended)
Number built None

The Mitsubishi J4M Senden (閃電"Flashing Lighting") or Navy Experimental 17-Shi Otsu B Type Interceptor Fighter Senden, Allied reporting name Luke, was a Japanese World War II fighter aircraft proposed by Mitsubishi for use by the Imperial Japanese Navy. The J4M project did not proceed beyond the design stage.


  • Design and development 1
  • Specifications (J4M estimated) 2
  • See also 3
  • References 4
    • Notes 4.1
    • Bibliography 4.2
  • External links 5

Design and development

To provide the Imperial Japanese Navy with a land-based high-performance interceptor aircraft, Mitsubishi designed the J4M. It was to have been a single-seat, twin-boom, low-wing monoplane with a central nacelle housing an unstepped cockpit and a 1,590-kilowatt (2,130-hp) Mitsubishi Ha-43[1] radial engine behind the pilot driving a four-bladed pusher propeller rotating between the booms.[2] The booms were to extend aft from the leading edge of the wing and were mounted below the central nacelle.[2] The aircraft was to have had tricycle landing gear and an armament of one 30-mm and two 20-mm cannon.[2]

Design of the initial J4M1 version ended when the Navy put its support behind the competing Kyūshū J7W fighter, and Mitsubishi did not build a prototype.[2] The Allies nonetheless assigned the J4M the reporting name "Luke" during World War II.[3]

Specifications (J4M estimated)

Data from Japanese Secret Projects:Experimental aircraft of the IJA and IJN 1939-1945[4]

General characteristics
  • Crew: 1
  • Length: 12.98 m (42 ft 7 in)
  • Wingspan: 12.49 m (41 ft 0 in)
  • Height: 3.47 m (11 ft 5 in)
  • Wing area: 22 m2 (240 sq ft)
  • Empty weight: 3,400 kg (7,496 lb)
  • Gross weight: 4,400 kg (9,700 lb)
  • Max takeoff weight: 5,255 kg (11,585 lb)
  • Powerplant: 1 × Mitsubishi MK9D 18-cyl. two-row fan assisted air-cooled radial piston engine, 1,600 kW (2,100 hp) at take-off
1,416.8 kW (1,900 hp) at 2,000 m (6,562 ft)
1,230.4 kW (1,650 hp) at 8,000 m (26,247 ft)
  • Propellers: 6-bladed metal constant speed propeller, 3.2 m (10 ft 6 in) diameter


  • Maximum speed: 756 km/h (470 mph; 408 kn) at 8,000 m (26,247 ft)
  • Cruising speed: 462 km/h (287 mph; 249 kn)
  • Landing speed: 147 km/h (91 mph)
  • Endurance: 2 hours 12 minutes
  • Service ceiling: 12,000 m (39,370 ft)
  • Rate of climb: 8.89 m/s (1,750 ft/min)
  • Time to altitude: 8,000 m (26,247 ft) in 15 minutes
  • Wing loading: 199.69 kg/m2 (40.90 lb/sq ft)
  • Guns: 1x 30mm Type 5 cannon with 100 rounds + 2x 20mm Type 99 cannon with 200 rounds per gun in the fuselage nose
  • Bombs: provision for 2x 30 kg (66 lb) or 2x 60 kg (132 lb) bombs

See also

Aircraft of comparable role, configuration and era
Related lists



  1. ^ Mitsubishi J4M, although Francillon, p. 491, claims the engine would have been a Mitsubishi MK9D.
  2. ^ a b c d Francillon, p. 491.
  3. ^ Francillion, p. 568.
  4. ^ Dyer, Edwin M. III (2009). Japanese Secret Projects:Experimental aircraft of the IJA and IJN 1939-1945 (1st ed.). Hinkley: Midland publishing. pp. 93–95.  


  • Francillon, René J. Japanese Aircraft of the Pacific War. Annapolis, Maryland: Naval Institute Press, 1979. ISBN 0-87021-313-X.
  • Dyer, Edwin M. III (2009). Japanese Secret Projects:Experimental aircraft of the IJA and IJN 1939-1945 (1st ed.). Hinkley: Midland publishing. pp. 93–95.  

External links

  • Mitsubishi J4M
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