Wright R-1820
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The Wright R-1820 Cyclone 9 was an American radial engine developed by Curtiss-Wright and widely used on 1930s through 1950s aircraft.
History
The R-1820 Cyclone 9 represented a further development of the Wright P-2 engine dating back to 1925. Featuring a greater displacement and a host of improvements, the R-1820 entered production in 1931. The engine remained in production well into the 1950s.The R-1820 was built under license by Lycoming, Pratt & Whitney Canada and also, during World War II, by the Studebaker Corporation. The Soviet Union had purchased a license for the design, designated M-25, and the Shvetsov OKB was formed to further develop the engine.
The R-1820 was at the heart of many famous aircraft including B-17 Flying Fortress and SBD Dauntless bombers, the early versions of the Polikarpov I-16 fighter (as M-25), and the CH-21 Shawnee helicopter.
Variants
- R-1820-1 - 575 hp (429 kW)
- R-1820-22 - 950 hp (708 kW)
- R-1820-33 - 775 hp (578 kW)
- R-1820-45 - 930 hp (694 kW)
- R-1820-53 - 1,000 hp (750 kW)
- R-1820-60 - 1,200 hp (895 kW)
- R-1820-72W - 1,425 hp (1,063 kW)
- R-1820-86 - 1,425 hp (1,063 kW)
- R-1820-97 - 1,200 hp (895 kW), turbosupercharged (gear-driven supercharger plus a turbocharger)
Specifications (R-1820-C9HC)
References
- Bridgman, L, (ed.) (1998) Jane's fighting aircraft of World War II. Crescent. ISBN 0517679647
Related contents
Related developments- Wright R-1300 Cyclone 7
- Wright R-2600 Cyclone 14
- Wright R-3350 Cyclone 18 (Duplex Cyclone)
- Shvetsov M-25
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