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Yokosuka R2Y Keiun

From Wikipedia, the free encyclopedia
Japanese WWII prototype aircraft
Yokosuka R2YKeiun
General information
TypeReconnaissance,Fighter
ManufacturerYokosuka
StatusCancelled
Primary userImperial Japanese Navy (intended)
Number built3 (1 completed)
History
First flight8 May 1945

TheYokosuka R2YKeiun (景雲,cirrus cloud) was aprototypereconnaissance aircraft built in Japan late in World War II.

Design and development

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Commissioned for theImperial Japanese Navy, after theR1Y design was cancelled due to its disappointing performance estimates, the R2Y used coupled engines driving a single propeller and also featured atricycle undercarriage.

Completed in April1945, the prototype made a short flight on 8 May but was destroyed in a USair raid only a few days later, thus ending development.

A proposal was also made to develop the R2Y into aturbojet-poweredlight bomber by replacing its piston engines with twoMitsubishi Ne-330s. Designated theR2Y2Keiun Kai, it was not constructed before the end of the War.

Specifications (R2Y1)

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Data fromJapanese Secret Projects: Experimental Aircraft of the IJA and IJN 1939–1945,[1]Japanese Aircraft of the Pacific War[2]

General characteristics

  • Crew: 2 pilot and radio operator
  • Length: 13.04 m (42 ft 9 in)
  • Wingspan: 13.99 m (45 ft 11 in)
  • Height: 4.23 m (13 ft 11 in)
  • Wing area: 33.99 m2 (365.9 sq ft)
  • Empty weight: 6,015 kg (13,261 lb)
  • Gross weight: 8,100 kg (17,857 lb)
  • Max takeoff weight: 9,400 kg (20,723 lb)
  • Fuel capacity: 1,555 L (411 US gal; 342 imp gal)
  • Powerplant: 1 ×Aichi Ha-70 (unified)24-cylinder liquid-cooled coupledV-12 piston engines, 2,500 kW (3,400 hp) for take-off
2,312 kW (3,100 hp) at 3,000 m (9,800 ft)
  • Propellers: 6-bladed constant-speed metal propeller

Performance

  • Maximum speed: 718.5 km/h (446.5 mph, 388.0 kn) at 10,000 m (33,000 ft)
  • Cruise speed: 463 km/h (288 mph, 250 kn) at 4,000 m (13,000 ft)
  • Landing speed: 166 km/h (103 mph; 90 kn)
  • Range: 3,139 km (1,950 mi, 1,695 nmi)
  • Ferry range: 3,611 km (2,244 mi, 1,950 nmi)
  • Service ceiling: 11,700 m (38,400 ft)
  • Time to altitude: 10,000 m (33,000 ft) in 21 minutes
  • Wing loading: 238.26 kg/m2 (48.80 lb/sq ft)
  • Power/mass: 0.316 kW/kg (0.192 hp/lb)

See also

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Aircraft of comparable role, configuration, and era

Related lists

References

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  1. ^Dyer, Edwin M. III (2009).Japanese Secret Projects:Experimental Aircraft of the ITA and IJN 1939–1945. Hinkley: Midland Publishing. pp. 78–80.ISBN 978-978-1857805.
  2. ^Francillon 1979, p. 475.

Bibliography

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  • Francillon, René J. (1979).Japanese Aircraft of the Pacific War (2nd ed.). London: Putnam & Company.ISBN 0-370-30251-6.
  • Millot, Bernard (November 1975). "Le Yokosuka R2Y".Le Fana de l'Aviation (in French) (75):11–14.ISSN 0757-4169.

External links

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Wikimedia Commons has media related toYokosuka R2Y Keiun.
Torpedo bombers
Dive bombers
Reconnaissance seaplanes
Flying boats
Training aircraft
Transport aircraft
Special-purpose aircraft
Bombers
Land-based Reconnaissance
World War II Allied reporting names
Fighters (A)
Torpedo bombers (B)
Shipboard reconnaissance (C)
Dive bombers (D)
Reconnaissance seaplanes (E)
Observation seaplanes (F)
Land-based bombers (G)
Flying Boats (H)
Land-based Fighters (J)
Trainers (K)
Transports (L)
Special-purpose (M)1
Floatplane fighters (N)
Land-based bombers (P)
Patrol (Q)
Land-based reconnaissance (R)
Night fighters (S)
1 X as second letter is for experimental aircraft or imported technology demonstrators not intended for service,2 Hyphenated trailing letter (-J, -K, -L, -N or -S) denotes design modified for secondary role,3 Possibly incorrect designation, but used in many sources
Imperial Japanese Navyofficial aircraft names
Fighters
Naval fighters1
Land-based fighters2
Nightfighters3
Jet/rocket fighters
Heavy bombers4
Bombers5
Patrol6
Reconnaissance7
Trainers8
Transports9
Miscellaneous10
Special-purpose aircraft11
With some exceptions for rockets, jets and repurposed aircraft, names chosen were for: 1. Winds, 2. Lightning, 3. Nighttime lights, 4. Mountains, 5. Stars/constellations, 6. Seas, 7. Clouds, 8. Plants, 9. Skies, 10. Landscapes, and 11. Flowers. Published translations disagree, and many are simplified, especially for plants, where the Japanese referred to a specific variety and the common translations only to the broader type.
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