Pratt & Whitney R-1690
From Biocrawler, the free encyclopedia.
(Redirected from Pratt & Whitney Hornet)
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).
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