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]
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R-1340 Wasp | |
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The first Pratt & Whitney Wasp | |
Type | Radial engine |
National origin | United States |
Manufacturer | Pratt & Whitney |
First run | 29 December 1925 |
Major applications | Soko 522 Boeing P-26 Peashooter de Havilland Canada DHC-3 Otter North American T-6 Texan Sikorsky H-19 Junkers Ju 52 |
Produced | 1926– |
Number built | 34,966 |
Developed into | Pratt & Whitney R-985 Wasp Junior |
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]
Note: R for Radial and 1340 for 1340 cubic inch displacement.
Data from Jane's.[8]
Related development
Related lists
Pratt & Whitney aircraft engines | |
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Radial engines |
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H piston engines |
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Free-piston gas turbines |
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Turbojets |
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Turbofans | |
Turboprops/Turboshafts |
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Propfans |
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Rocket engines |
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Aeroderivative gas turbine engines |
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Subsidiaries |
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Key people |
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† Joint development aeroengines See also: Pratt & Whitney Canada aeroengines |
United States military piston aircraft engine designation system | |
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H (four-bank H-configuration inline) | |
IV (inverted-V inline) | |
L (single-bank inline) | |
O (opposed) | |
R (radial) |
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V (upright-V inline) | |
V (inverted-V inline) | |
VG (inverted-V inline) | |
W (three-bank W-configuration inline) |
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