Pratt & Whitney R-1690
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The Pratt & Whitney R-1690 Hornet was an engine widely used in American aircraft from the 1920s through 1940s. It was a single-row, 9-cylinder air-cooled radial design. Displacement was 1,690 cubic inches (27.7 L). The BMW 132 was an improved version of this engine.
Models
A turbocharged version was available.Aircraft
- Keystone B-3
- Lockheed Lodestar C-56A, C-56B, C-56C, C-56D, C-56E, C-59/Mk 1a
- Martin B-10 XB-14
- Sikorsky S-42
Specifications (R-1690)
External link
- http://www.pratt-whitney.com/about_history_classic_r1690.asp
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