Pratt & Whitney R-2800 Double Wasp

The Pratt & Whitney R -2800 Double Wasp is an air-cooled multiple radial engine with 18 cylinders ( 2x9 ) from the Wasp engine family of Pratt & Whitney. The term R -2800 radial engine means ( radial engine ) - Engine 2800 cubic inches, which corresponds to 45.9 liters. He ran in 1937 and its first flight took place in 1939. Production ended after 125 334 copies in 1960.

The up to 2500 bhp powerplant was a significant factor in the Allied air forces in World War II. So it drove fighters such as the Republic P -47 Thunderbolt, the Chance Vought F4U Corsair, the Grumman F6F Hellcat and the Grumman F8F -1 Bearcat on, as bombers such as the twin-engine Martin B-26 Marauder and the Douglas A-26 Invader. Furthermore, many well-known passenger aircraft of the 1950s were equipped with the R -2800 Double Wasp, such as the Douglas DC -6, the aircraft Convair CV 240/340/440-Familie and Martin 2-0-2/4-0- 4

Versions

The engine has been constantly evolving. So various versions created:

  • R -2800 -9: 1491 kW (2000 hp)
  • R -2800 -10: 1510 kW ( 2026 hp)
  • R -2800 - 10W: 1640 kW ( 2228 hp)
  • R -2800 - 18W: 1827 kW ( 2482 hp)
  • R -2800 -27: 1510 kW ( 2026 hp)
  • R -2800 -31: 1508 kW ( 2023 hp)
  • R -2800 - 34W: 1600 kW (2100 hp)
  • R 2800-43: 1510 kW ( 2026 hp)
  • R 2800-48: 1715 kW ( 2330 hp)
  • R 2800-54: 1600 kW (2100 hp)
  • R 2800-59: 1890 kW ( 2568 hp)
  • R -2800 65: 1510 kW ( 2026 hp)
  • R 2800-71: 1510 kW ( 2026 hp)
  • R -2800 - 83W: 1715 kW ( 2330 hp)

Specifications

  • Type: Air-cooled 18 -cylinder four-stroke radial engine with a supercharger or turbocharger
  • Stroke: 152.4 mm
  • Bore: 146.0 mm
  • Displacement: 45.9 liters
  • Power: to 1840 kW / 2500 hp at 2250/min
  • Maximum speed: 2800 rpm
  • Mass: 1068 kg (dry)
  • Power to weight ratio: 0.43 kg / hp
  • Construction period: 1939-1960
Martin 4-0-4 List of aircraft engines
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