Pratt & Whitney X-1800 (later enlarged as the XH-2600) was an H-block aircraft engine project developed between 1938 and 1940, which was cancelled with only one example being built.
Design and development [ edit ]
The X-1800 was a watercooled 24-
cylinder H-block of 2,240 in 3 displacement; this was later expanded to 2,600 in [1 ] 3 displacement. It was intended to be used in the [2 ] Vultee XP-54, Curtiss-Wright XP-55 Ascender, Northrop XP-56, and Lockheed XP-49. Projected performance was to be 1,800 to 2,200 hp (1350-1640 kW), with a turbocharger to secure high-altitude performance. The designation came from the intended power rating rather than the more usual cubic inch engine displacement figure. [3 ]
The target date for series production was 1942. In 1940, however, performance on the test bench did not continue to improve, demonstrating a need for considerable additional development effort. Pratt & Whitney subsequently ended development of the X-1800 in October 1940, with only one built, to concentrate on
Applications [ edit ]
Specifications (X-1800) [ edit ]
Type: 24 cylinder H-engine
Bore: 5.25in (133.35mm)
Stroke: 5.00in (127mm)
Displacement: 2,597.7 cu in (42.57L)
Length: 107in (2.71m)
Dry weight: 2,400lb (1,089kg)
Power output: 1,800 - 2,000 hp
See also [ edit ]
References [ edit ]
^ Gunston 2006, p. 163.
^ Connors, p. 147.
^ Gunston 2000
Bibliography [ edit ]
Connors, Jack (2010). The Engines of Pratt & Whitney: A Technical History. Reston. Virginia: American Institute of Aeronautics and Astronautics. ISBN 978-1-60086-711-8.
Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. ISBN 0-7509-4479-X.
Gunston, Bill (1999). The Development of Piston Aero Engines, 2nd Edition. Sparkford, Somerset, England, UK: Patrick Stephens, Haynes Publishing. ISBN 0-7509-4478-1.
External links [ edit ]