Military Wiki
Role Long Range Reconnaissance Bomber
Manufacturer Tachikawa Aircraft Company Ltd
Designer Jiro Tanaka (in the final stage of the development from the summer of 1944 until August 1945)[1][2][3]
First flight March 1944
Primary user Imperial Japanese Army Air Force
Number built 16

The Tachikawa Ki-74 was a Japanese experimental long-range reconnaissance bomber of World War II. A twin-engine, mid-wing monoplane, it was developed for the Imperial Japanese Army Air Force but did not enter service.


Though already conceived in 1939[4] as a long-range reconnaissance aircraft capable of reaching west of Lake Baikal when operating from bases in Manchukuo (Manchuria), the prototype Ki-74 (designated as A-26 by Tachikawa) only first flew as late as in March 1944; it was powered by two 1,641 kW (2,200 hp) Mitsubishi Ha-211-I radial engines. The following two prototypes were powered by the turbo-supercharged Mitsubishi Ha-211-I Ru, but as these experienced teething troubles, the following thirteen pre-production machines substituted the Ha-211 Ru engine for the lower powered, but more reliable, turbo-supercharged Mitsubishi Ha-104 Ru.[5]

Operational history

The Ki-74 did not see operational service. Nevertheless, the Allies knew of its existence and assigned the type the codename "Patsy" after it was discovered that is was a bomber, not a fighter. Previously it had the code name "Pat" in Allied Intelligence.[6]

Specifications (Ki-74)

Data from The Imperial Japanese Secret Weapons Museum ;[7] Japanese AIrcraft of the Pacific War[6]

General characteristics

  • Crew: 5
  • Length: 17.65 m (57 ft 11 in)
  • Wingspan: 18.6 m (61 ft .5 in)
  • Height: 5.1 m (16 ft 9 in)
  • Wing area: 80 m² (860.8 ft²)
  • Empty weight: 10,200 kg (22,481 lb)
  • Loaded weight: 19,400 kg (42,758 lb)
  • Useful load: 9.200 kg (20,277 lb)
  • Max. takeoff weight: kg (lb)
  • Powerplant: 2 × Mitsubishi Ha-104 Ru radial engine, 1,491 kW (2,000 hp) each


  • Maximum speed: 570 km/h (308 knots, 354 mph)
  • Cruise speed: 400 km/h (216 knots, 249 mph)
  • Range: 8,000 km (4,324 nmi, 4,972 mi)
  • Service ceiling: 12,000 m (39,370 ft)
  • Wing loading: 242.5 kg/m² (49.7 lb/ft²)
  • Power/mass: 0.154 kW/kg (0.093 hp/lb; 0.206 hp/kg)


  • 1x 12.7-mm (0.5-in) Ho-103 machine gun
  • 1,000 kg (2,205 lb) bomb load
  • See also





    External links

    This page uses Creative Commons Licensed content from Wikipedia (view authors).