Nakajima Ki-49

The Nakajima Ki-49 Donryu was a Japanese medium bomber of World War II. It was a twin-engine, mid-wing, cantilever monoplane of all-metal construction fitted with a retractable tailwheel undercarriage. During the Second World War, it was known to the Allies by the codename Helen.

Nakajima Ki-49
Class Aircraft
Type Bomber
Manufacturer Nakajima Aircraft Company
Origin Japan
Country Name Origin Year
Japan 1939
Country Name Operational Year Retirement Year
Japan 1941 1945 View
ManufacturerName Production From Production To Quantity
Nakajima Aircraft Company 819 View

Role Heavy bomber
Manufacturer Nakajima Aircraft Company
Designer Yasushi Koyama
First flight August 1939
Introduction 1941
Retired 1945
Primary user IJA Air Force
Produced 1941-1944
Number built 819


General characteristics

  • Crew: 8
  • Length: 16.5 m (54 ft 1.5 in)
  • Wingspan: 20.42 m (67 ft 0 in)
  • Height: 4.25 m (13 ft 11.25 in)
  • Wing area: 69.05 m (743.27 ft)
  • Empty weight: 6,530 kg (14,396 lb)
  • Max takeoff weight: 11,400 kg (25,133 lb)
  • Powerplant: 2 x Nakajima Ha-109 14-cylinder radial piston, 1,119-kW (1,500-hp) each

Performance

  • Maximum speed: 492 km/h (266 knots, 306 mph)
  • Cruise speed: 350 km/h (189 knots, 217 mph)
  • Range: 2,950 km (1,594 NM, 1,833 mi)
  • Service ceiling 9,300 m (30,510 ft)

Armament

  • Guns: 1 x 20 mm Type 99 cannon, 5 x 7.7-mm (0.303-in) Type 89 machine guns.
  • Bombs: 1,000 kg (2,204-lb) bombload

End notes