Pratt & Whitney R-1340 Wasp
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The Pratt & Whitney R-1340 Wasp is an aircraft engine of the reciprocating type that was widely used in American aircraft from the 1920s onward. It was the Pratt & Whitney aircraft company's first engine, and the first of the famed Wasp series. It was a single-row, nine-cylinder, air-cooled, radial design, and displaced 1,344 cubic inches (22 L); bore and stroke were both 5.75 in (146 mm). A total of 34,966 engines were produced.[1]
As well as numerous types of fixed-wing aircraft, it was used to power helicopters, the Agusta-Bell AB.102 and the Sikorsky H-19, and a class of airship, the K-class blimp.
In 2016, it received designation as a Historic Engineering Landmark from the American Society of Mechanical Engineers.[2]
Variants
Note: R for Radial and 1340 for 1340 cubic inch displacement.
- R-1340-7
- Template:Cvt, Template:Cvt
- R-1340-8
- Template:Cvt
- R-1340-9
- Template:Cvt, Template:Cvt
- R-1340-16
- Template:Cvt
- R-1340-17
- Template:Cvt
- R-1340-19
- Template:Cvt
- R-1340-19F
- Template:Cvt
- R-1340-21G
- Template:Cvt
- R-1340-22
- Template:Cvt
- R-1340-23
- Template:Cvt
- R-1340-30
- Template:Cvt
- R-1340-31
- Template:Cvt
- R-1340-33
- Template:Cvt
- R-1340-48
- Template:Cvt
- R-1340-49
- Template:Cvt
- R-1340-AN1
- Template:Cvt, Template:Cvt
- R-1340-AN2
- Template:Cvt, 3:2 geared prop shaft
- R-1340-B
- Template:Cvt
- R-1340-D
- Template:Cvt
- R-1340-S1D1
- Template:Cvt
- R-1340-S1H1-G
- Template:Cvt, Template:Cvt
- R-1340-S3H1
- Template:Cvt
- R-1340-T1D1
- Template:Cvt
Applications
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Engines on display
- There are a Wasp A and three Wasp C's on display at the New England Air Museum, Bradley International Airport, Windsor Locks, CT.[4][5][6][7]
Specifications (R-1340-S1H1-G)
Data from Jane's.[8]
General characteristics
- Type: Nine-cylinder single-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, 1:10 step-up
- Fuel system: Two-barrel Stromberg carburetor
- Fuel type: 91 octane rating gasoline
- Cooling system: Air-cooled
- Reduction gear: 3:2
Performance
- Power output: Template:Cvt at 2,250 rpm at Template:Cvt
- Specific power: Template:Cvt
- Compression ratio: 6:1
- Power-to-weight ratio: Template:Cvt
See also
Related development
- Pratt & Whitney R-985 Wasp Junior
- Pratt & Whitney R-1535 Twin Wasp Junior
- Pratt & Whitney R-1830 Twin Wasp
Related lists
References
Notes
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- ↑ Pratt&Whitney R-1340 page Retrieved: 25 October 2008
- ↑ "Pratt’s first engine gets historic designation" from Hartford Business Journal, published February 1st Retrieved: 7 April 2016
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- ↑ http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1119 "Pratt & whitney R-1340 Wasp A"
- ↑ http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1113 "Pratt & Whitney R-1340 Wasp C Cutaway"
- ↑ http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1120 "Pratt & Whitney R-1340-0 Wasp C"
- ↑ http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1122 "Pratt & Whitney Roscoe Turner R-1340 Wasp Engine"
- ↑ Bridgman 1994, p. 81d.
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Bibliography
- Bridgman, Leonard. Jane's All the World's Aircraft 1945-46. Hammersmith, London: HarperCollinsPublishers (1994 reprint). Template:ISBN
- 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
- "Index of Wasp & R-1340 Designated Engines", a scanned Pratt & Whitney reference document from 1956 detailing the different Wasp versions, their specifications, and the aircraft they were installed in.
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- There is a "Pratt & Whitney 1340N Radial Engine" in use on a T-6 Texan at Pacific Warbirds, Oahu, HI
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