A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
X-1800 (XH-2600) | |
---|---|
Type | 24-cylinder H-engine |
National origin | United States |
Manufacturer | Pratt & Whitney |
First run | 1940 |
Number built | 1 |
The 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
The X-1800 was a watercooled 24-cylinder H-block of 2,240 in3 displacement;[1] this was later expanded to 2,600 in3 displacement.[2] It was intended to be used in the Vultee XP-54, Curtiss-Wright XP-55 Ascender, Northrop XP-56, Lockheed XP-49, and Lockheed XP-58 Chain Lightning. 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 radial engines.
Intended applications
- Curtiss-Wright XP-55 Ascender
- Lockheed XP-49
- Lockheed XP-58 Chain Lightning
- Northrop N-1
- Northrop XP-56
- Vultee XP-54
Specifications (X-1800)
General characteristics
- 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)
Components
Performance
- Power output: 1,800 - 2,000 hp
See also
Related development
Comparable engines
Related lists
References
Notes
Bibliography
- 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
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