Pratt & Whitney R-1535
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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. It was a two-row, 14-cylinder air-cooled radial design. Displacement was 1,535 cubic inches (25.2 liters); bore and stroke were 5-3/16" and 5-3/16" (131.8 mm and 131.8 mm).
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[edit] Models
- R-1535: 700 hp (521 kW)
- R-1535-13: 825 hp (615 kW)
[edit] Specifications (R-1535-13)
General characteristics
- Type: 14-cylinder air-cooled two-row radial engine
- Bore: 5.1875 in (131.8 mm)
- Stroke: 5.1875 in (131.8 mm)
- Displacement: 1,535 in³ (25.2 L)
Components
- Cooling system: Air-cooled
Performance
- Power output: 825 hp (615 kW)
- Specific power: 0.54 hp/in³ (24.4 kW/L)
[edit] Aircraft which used R-1535
- Hughes H-1 Racer
- Northrop A-17
- Bellanca 28-70
- Breguet 695
- Curtiss SBC-3 Helldiver
- Douglas O-46
- Fokker D.XXI (Finnish licence-built series 4 and 5)
- Grumman F2F
- Miles Master
- Northrop BT
- Vought SBU Corsair
- Vought SB2U Vindicator
[edit] Related contents
- Pratt & Whitney Wasp series
- R-1340 Wasp
- R-985 Wasp Junior
- R-1830 Twin Wasp
- R-2800 Double Wasp
- R-4360 Wasp Major
