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Pratt & Whitney X-1800
The Pratt & Whitney X-1800 waa a American aircraft engine project. It was a watercooled 24-cylinder H-block, developed from the earlier Pratt & Whitney H-2600. It was intended to be used in the Vultee XP-54, Curtiss-Wright XP-55, Northrop XP-56, and Lockheed XP-49. Projected performance was to be 1,800 to 2,200 hp (1850-2200 PS, 1350-1640 kW) from a displacement of 1,800in3 (42.6 liters), with a turbocharger to secure high-altitude performance.
The target date for series production was 1942. In 1940, however, performance on the test bench did not continue to become, demonstrating a need for considerable additional development effort. P&W subsequently ended development of the X-18000 in October 1940, with only one built, to concentrate on rotaries.
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de:de.wikipedia.org cl:Pratt & Whitney X-1800
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