Pratt And Whitney Engine Manuals. Included engines and the aircraft they powered with emphasis on the engine installation, propellers, accessories, cooling.
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Luis PercocoP&W R-1830 Twin Wasp Documents & ManualsDescription:The Pratt & Whitney Wasp series are among the most important piston aeroengine designs ever built. It was introduced in 1932 with an output of 750 hp,the final version produced 1,350 hp. A total of 173,618 R-1830 engines werebuilt, a notable figure which makes it the most produced aircraft engine. The R-1830 'Twin Wasp' was a two-row engine of 14 cylinders, each havinga bore and stroke of 5 1/2'. The R-1535 'Twin Wasp Junior' was also atwo-row engine of 14 cylinders, but its bore and stroke was 5 3/16'.
Reliability was a hallmark of Wasp series engines. They powered many ofthe WWII era aircraft and earned a wartime record of durability in extremesof climate, hostile fire and frequent abuse of the operating limitscontained in the manual.
For most of the 1930s the R-1830 was the largest U.S. Engine underdevelopment.The Twin Wasp design began in 1931 under the guidance of legendary P & Wengineer Luke Hobbs.
This twin-row radial incorporated 14 cylinders in two rowsof seven, mounted to a forged aluminum crankcase.