Pratt & Whitney R-1535 Twin Wasp Junior
The Pratt & Whitney R-1535 Twin Wasp Junior was an engine used in American aircraft in the 1930s. The engine was first introduced in 1932 as a 14 cylinder version of the 9-cylinder R-985.[1] It was a two-row, air-cooled radial design. Displacement was 1,535 in³ (25.2 L); bore and stroke were 5-3/16 in and 5-3/16 in (131.8 mm and 131.8 mm).
Variants
- R-1535-11 - 750 hp (559 kW)
- R-1535-13 - 750 hp (559 kW), 825 hp (615 kW)
- R-1535-44 - 625 hp (466 kW)
- R-1535-72 - 650 hp (485 kW)
- R-1535-94 - 825 hp (615 kW)
- R-1535-96 - 825 hp (615 kW)
- R-1535-98 - 700 hp (521 kW)
- R-1535-SB4-G - 825 hp (615 kW)
Applications
Specifications (R-1535-SB4-G)
Data from [2]
General characteristics
- Type: Fourteen-cylinder two-row supercharged air-cooled radial engine
- Bore: 5 3⁄16 in (131.8 mm)
- Stroke: 5 3⁄16 in (131.8 mm)
- Displacement: 1,534.9 in³ (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
References
Notes
Bibliography
- Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
External links
Media related to [//commons.wikimedia.org/wiki/Category:Pratt_%26_Whitney_R-1535 Pratt & Whitney R-1535] at Wikimedia Commons
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