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Pratt & Whitney R-1535 Twin Wasp Junior

From Wikipedia, the free encyclopedia

R-1535 Twin Wasp Junior
Pratt & Whitney R-1535 Twin Wasp Junior.jpg
Pratt & Whitney Twin Wasp Junior, at the National Museum of Naval Aviation, Pensacola, Florida
Type Radial engine
National origin United States
Manufacturer Pratt & Whitney
First run 1932

The Pratt & Whitney R-1535 Twin Wasp Junior was an engine used in American aircraft in the 1930s. The engine was introduced in 1932 as a 14-cylinder version of the 9-cylinder R-985. It was a two-row, air-cooled radial design. Displacement was 1,535 cu in (25.2 l); bore and stroke were both 5+316 in (132 mm).

Variants

  • R-1535-11 - 750 hp (560 kW)
  • R-1535-13 - 750 hp (560 kW), 825 hp (615 kW)
  • R-1535-44 - 625 hp (466 kW)
  • R-1535-72 - 650 hp (480 kW)
  • R-1535-94 - 825 hp (615 kW)
  • R-1535-96 - 825 hp (615 kW)
  • R-1535-98 - 700 hp (520 kW)
  • R-1535-SB4-G - 825 hp (615 kW)

Applications

Engines on display

Specifications (R-1535-SB4-G)

Data from [2]

General characteristics

  • Type: Fourteen-cylinder two-row supercharged air-cooled radial engine
  • Bore: 5+316 in (131.8 mm)
  • Stroke: 5+316 in (131.8 mm)
  • Displacement: 1,534.9 cu in (25.153 l)
  • Length: 53.27 in (1,353 mm)
  • Diameter: 44.13 in (1,121 mm)
  • Dry weight: 1,087 lb (493 kg)

Components

Performance

See also

Related development

Comparable engines

Related lists

References

Notes

  1. ^ "Pratt & Whitney R-1535-96 Twin Wasp Junior"
  2. ^ Tsygulev (1939). Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств) (in Russian). Moscow: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR.

Bibliography

  • Gunston, Bill. World Encyclopedia of Aero Engines: From the Pioneers to the Present Day. 5th edition, Stroud, UK: Sutton, 2006.ISBN 0-7509-4479-X
  • White, Graham. Allied Aircraft Piston Engines of World War II: History and Development of Frontline Aircraft Piston Engines Produced by Great Britain and the United States During World War II. Warrendale, Pennsylvania: SAE International, 1995. ISBN 1-56091-655-9

External links

This page was last edited on 18 May 2021, at 08:41
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