Yokosuka R2Y

From Wikipedia, the free encyclopedia

The Yokosuka R2Y Keiun (景雲 - "Beautiful Cloud") was a prototype reconnaissance aircraft built in Japan late in World War II.

Commissioned for the Imperial Japanese Navy after the Yokosuka 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 arrangement that was possibly influenced by the Messerschmitt Me 509.

Completed in April 1945, the prototype made a short flight on May 8, but was destroyed in a US air raid only a few days later, thus ending development.

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, little progress on the design was made before the end of the war.

[edit] Specifications (R2Y1)

Data from {name of first source}^[1]

General characteristics

• 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)
• Useful load: kg (kg)
• Max takeoff weight: 9,400 kg (20,723 lb)
• Powerplant: × Aichi Ha-70 2, 2,536 kW (3,400 hp) each

Performance

• Never exceed speed: km/h (knots, mph)
• Maximum speed: 770 km/h (knots, 480 mph)
• Cruise speed: km/h (knots, mph)
• Stall speed: km/h (knots, mph)
• Range: 3,610 km (nm, 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)

[edit] Related content

Related development: Heinkel He 119

Comparable aircraft:

Designation sequence: R1Y - R2Y