Wright R-1820 Cyclone
| R-1820 Cyclone | |
|---|---|
| Curtiss-Wright R-1820 Cyclone Radial Engine | |
| Type | Radial engine | 
| National origin | United States | 
| Manufacturer | Wright Aeronautical | 
| First run | 1930s | 
| Major applications | Boeing B-17 Flying Fortress Curtiss P-36 Hawk Douglas B-18 Bolo Douglas DC-3 Douglas SBD Dauntless General Motors FM-2 Wildcat Sikorsky H-34 North American T-28 Trojan | 
| Number built | 47,475 | 
| Variants | Shvetsov M-25 | 
| Developed into | Wright R-2600 Wright R-3350 | 
The Wright R-1820 Cyclone 9 is an American radial engine developed by Curtiss-Wright, widely used on aircraft in the 1930s through 1950s. It was produced under license in France as the Hispano-Suiza 9V or Hispano-Wright 9V, and in the Soviet Union as the Shvetsov M-25.