Pratt & Whitney R-1340
| R-1340 Wasp | |
|---|---|
 |
|
| The first Pratt & Whitney Wasp | |
| Type | Radial engine |
| National origin | United States |
| Manufacturer | Pratt & Whitney |
| First run | 29 December 1925 |
| Major applications |
Boeing 247 de Havilland Canada DHC-3 Otter North American T-6 Texan Sikorsky H-19 Sikorsky S-38 |
| Number built | 34,966 |
| Developed into | Pratt & Whitney R-985 Wasp Junior |
The Pratt & Whitney R-1340 Wasp was 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.
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.
Note: R for Radial and 1340 for 1340 cubic inch displacement.
Data from Jane's.
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