Kayaba Ku-4

Ku-4
Role Research aircraft
National origin Japan
Manufacturer Kayaba Industry
Designer Hidemasa Kimura
Status Cancelled project

The Kayaba Ku-4 was a research aircraft built in Japan in 1940 to investigate the possibilities of tailless aircraft designs. It followed designer Hidemasa Kimura's successful Ku-2 and Ku-3 designs for the Imperial Japanese Army. While these previous aircraft had been gliders, however, the Ku-4 was to be powered by a pusher engine. It had a low, swept wing, and like the Ku-2, fins at the wingtips.

Work on the prototype was well advanced by April 1941, but the following month, Kimura's relationship with the Army soured following the crash of the Ku-2. The Ku-4 was canceled, and Kimura eventually received only ¥17,000 of the ¥200,000 that had been promised for the development of his tailless designs.

Specifications (as designed)

General characteristics

  • Crew: One pilot
  • Length: 3.42 m (11 ft 3 in)
  • Wingspan: 9.80 m (32 ft 2 in)
  • Wing area: 9.0 m2 (97 sq ft)
  • Powerplant: 1 × piston engine , 90 kW (120 hp)

Performance

  • Maximum speed: 180 km/h (110 mph, 96 kn)
  • Range: 300 km (190 mi, 170 nmi)

See also

Aircraft of comparable role, configuration, and era

Related lists

References

Wikimedia Commons has media related to Kayaba Ku-4.
  • Wooldridge, E.T. "Japanese flying wings". History of the Flying Wing. Retrieved 29 April 2007.
  • 日本飞翼的短暂研究 Archived 2012-02-13 at the Wayback Machine

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