|First flight||8 May 1945|
|Primary user||Imperial Japanese Navy (intended)|
Design and development
Commissioned for the Imperial Japanese Navy after the R1Y design was cancelled due to its disappointing performance estimates, the R2Y borrowed from the German pre-war Heinkel He 119 in its use of coupled engines driving a single propeller. It also featured a tricycle undercarriage giving it an appearance similar to the Messerschmitt Me 509.
A proposal was also made to develop the R2Y into a turbojet-powered light bomber by replacing its piston engines with two Ishikawajima Ne-330s. Designated the R2Y2 Keiun-Kai, the prototype was begun but never completed.
Data from Japanese Aircraft of the Pacific War
- Crew: 2
- Length: 13.05 m (42 ft 10 in)
- Wingspan: 14.00 m (45 ft 11 in)
- Height: 4.24 m (13 ft 9 in)
- Wing area: 34.0 m² (366 ft²)
- Empty weight: 6,015 kg (13,261 lb)
- Loaded weight: 8,100 kg (17,857 lb)
- Max. takeoff weight: 9,400 kg (20,723 lb)
- Powerplant: 1 × Aichi Ha-70 (Two 1,300 kW (1,700 hp) Aichi Atsuta engines coupled to a gearbox), 2,500 kW (3,400 hp)
- Maximum speed: 770 km/h (416 kn, 480 mph)
- Range: 3,610 km (1,949 nmi, 2,251 mi)
- Service ceiling: 11,700 m (38,376 ft)
- Rate of climb: 476 m/min (1,561 ft/min)
- Wing loading: 238 kg/m² (49 lb/ft²)
- Power/mass: 31 W/kg (0.19 hp/lb)
- Kawasaki Ki-64 (also a tandem-engine driving a single propeller)
- Francillon 1979, p. 475.
- Francillon, Ph.D., René J. Japanese Aircraft of the Pacific War. London: Putnam & Company Ltd., 1970 (2nd edition 1979). ISBN 0-370-30251-6.
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