Wright R-1820
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Wright R-1820 Cyclone |
The
Wright R-1820 Cyclone 9 was an American
radial engine developed by
Curtiss-Wright and widely used on 1930s through 1950s aircraft.
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.
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R-1820-1 - 575 hp (429 kW)
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R-1820-22 - 950 hp (708 kW)
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R-1820-33 - 775 hp (578 kW)
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R-1820-45 - 930 hp (694 kW)
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R-1820-53 - 1,000 hp (750 kW)
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R-1820-60 - 1,200 hp (895 kW)
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R-1820-72W - 1,425 hp (1,063 kW)
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R-1820-86 - 1,425 hp (1,063 kW)
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R-1820-97 - 1,200 hp (895 kW), turbosupercharged (gear-driven
supercharger plus a
turbocharger)
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Wright R-1820 Cyclone with some labeled components. Click image for a larger version. |
