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The Great Transformation
Notes on Early Air-Cooled Engine Design
by Paul Dempsey
Published 19 Feb 2009

This paper describes how the Royal Aircraft Establishment and the Army Air Service at McCook Field influenced air-cooled engine design during the decade after the First World War. The Wright J-5 and the Pratt & Whitney Wasp, engines that made long-distance air travel practical, grew out of this work.


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