|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)|
|First flight||March 1944|
|Primary user||Imperial Japanese Army Air Force|
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 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.
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.
- 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)
- Carmakers owe success to warplanes - Military's brightest aircraft designers created Japan's automotive powers The Japan Times, Aug. 13, 2005
- The History and the Biography of Jiro Tanaka (Detailed PDF document attached) (Japanese) - Japan Automotive Hall of Fame
- From the Ki-74 to the Tama Electric Vehicles and the Prince Vehicles - Interview of Jiro Tanaka on Nov. 22, 1996 (Japanese) - The Society of Automotive Engineers of Japan (JSAE)
- Francillon 1979, p. 259.
- Francillon 1979, pp. 260–261.
- Francillon 1979, p. 261.
- "The Imperial Japanese Secret Weapons Museum". Archived from the original on 2009-10-27. http://web.archive.org/web/20091027015038/http://uk.geocities.com/sadakichi09/army/IJA19.htm.
|Wikimedia Commons has media related to Tachikawa aircraft.|
- Ki-74 Patsy at www.hikotai.net
- Ki-74 Patsy at ww2drawings.jexiste.fr
- Ki-74 Patsy at The Imperial Japanese Secret Weapons Museum
|This page uses Creative Commons Licensed content from Wikipedia (view authors).|