Pratt & Whitney R-2800
978-613-2-32445-0
6132324453
140
2010-08-19
45.00 €
eng
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High Quality Content by WIKIPEDIA articles! The Pratt & Whitney R-2800 Double Wasp is a two-row, 18-cylinder, air-cooled radial aircraft engine with a displacement of 2,804 in³ (46 L), and is part of the long-lived Wasp family. The R-2800 is considered one of the premier radial piston engines ever designed and is notable for its widespread use in many important American aircraft during and after World War II. During the war years, Pratt & Whitney continued to develop new ideas to upgrade this already powerful workhorse, most notably water injection to give emergency power in combat. First run in 1937, the R-2800 was America''s first 18-cylinder radial engine design. The Double Wasp was more powerful than the world''s only other modern eighteen, the Gnome-Rhône 18L of 3,442 in³ (56.4 L), but it was much smaller and heat dissipation was a greater problem. To enable more efficient cooling, the usual practice of casting or forging the cylinder head cooling fins that had been effective enough for other engine designs was discarded, and instead, much thinner and closer-pitched cooling fins were machined from the solid metal of the head forging.
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