Pratt & Whitney R-1535 Twin Wasp Junior
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Template:Short description Template:More footnotes Template:Infobox aero engine
The Pratt & Whitney R-1535 Twin Wasp Junior is an American aircraft engine developed in the 1930s. The engine was introduced in 1932 as a 14-cylinder version of the 9-cylinder R-985, and was a two-row, air-cooled radial design. Displacement was Template:Cvt; bore and stroke were both Template:Cvt.[1]
Variants
- R-1535-11 - Template:Cvt
- R-1535-13 - Template:Cvt, Template:Cvt
- R-1535-44 - Template:Cvt
- R-1535-72 - Template:Cvt
- R-1535-94 - Template:Cvt
- R-1535-96 - Template:Cvt
- R-1535-98 - Template:Cvt
- R-1535-SB4-G - Template:Cvt
Applications
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Engines on display
- There is a R-1535-96 on display at the New England Air Museum, Bradley International Airport, Windsor Locks, CT.[2]
- There is an R-1535 on display at the San Diego Air and Space Museum. It is now being installed in the museum's Hughes H-1 Racer reproduction project.Script error: No such module "Unsubst".
Specifications (R-1535-SB4-G)
Data from [3]
General characteristics
- Type: Fourteen-cylinder two-row supercharged air-cooled radial engine
- Bore: Template:Cvt
- Stroke: Template:Cvt
- Displacement: Template:Cvt
- Length: Template:Cvt
- Diameter: Template:Cvt
- Dry weight: Template:Cvt
Components
- Valvetrain: Two overhead valves per cylinder
- Supercharger: Single-speed centrifugal type supercharger, 11:1 step-up
- Fuel system: Two-barrel Stromberg carburetor
- Fuel type: 87 octane rating gasoline
- Cooling system: Air-cooled
- Reduction gear: Epicyclic gearing, 0.75:1
Performance
- Power output: Template:Cvt at 2,625 rpm for takeoff
- Specific power: Template:Cvt
- Compression ratio: 6.75:1
- Specific fuel consumption: 0.49 lb/(hp•h) (295 g/(kW•h))
- Oil consumption: 0.39 oz/(hp•h) (15 g/(kW•h))
- Power-to-weight ratio: Template:Cvt
See also
Related development
- Pratt & Whitney R-985 Wasp Junior
- Pratt & Whitney R-1340 Wasp
- Pratt & Whitney R-1830 Twin Wasp
- Pratt & Whitney R-2800 Double Wasp
- Pratt & Whitney R-4360 Wasp Major
Comparable engines
Related lists
References
Notes
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- ↑ Script error: No such module "citation/CS1".
- ↑ "Pratt & Whitney R-1535-96 Twin Wasp Junior"
- ↑ Script error: No such module "citation/CS1".
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Bibliography
- Gunston, Bill. World Encyclopedia of Aero Engines: From the Pioneers to the Present Day. 5th edition, Stroud, UK: Sutton, 2006.Template:ISBN
- 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. Template:ISBN
External links
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