Kawasaki Ki-148

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Kawasaki Igo-1-B, otherwise known as Kawasaki Ki-148 was a World War II Japanese guided air-to-surface missile designed in 1944. Developed along its sister projects of Mitsubishi Igo-1-A and Tokyo Imperial University-designed Igo-1-C, the Igo-1-B was a simple radio-controlled guided bomb propelled by a rocket engine generating 150 kilograms (330 lb) of thrust for up to 80 seconds.[1]

Test trials were carried out in late 1944 and the weapon was quickly ordered by the war ministry. Launched during tests from a modified Kawasaki Ki-48 light bomber, its standard mother aircraft was to be the modern Kawasaki Ki-102 heavy fighter. Although approximately 180 missiles were built, none saw service before the end of World War II.[2]


  • Length: 4.09 m (13 ft 5 in)
  • Wing Span: 2.60 m (8 ft 6 in)
  • Height: 0.90 m (2 ft 11 in)
  • Wing Area: 1.95 Square metres
  • All-Up Weight: 680 kg
  • Main Engine: 1 x Mitsubishi Tokuro-1 Type 2 Rocket (150 kg)
  • Max Speed: unknown
  • Range: unknown
  • Warhead: 300 kg HEAT


  1. ^ Martin Caidin (1956). "Japanese Guided Missiles in World War II". Journal of Jet Propulsion. 26 (8): 691–694. 
  2. ^ Francillon 1979, p. 532.
  • Francillon, Ph.D., René J. Japanese Aircraft of the Pacific War. London: Putnam and Company Ltd., 1979. ISBN 0-370-30251-6.