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Several radial engines were offered for the DC-3. Early-production civilian aircraft used either the 9-cylinder Wright R-1820 Cyclone 9 or the 14-cylinder Pratt & Whitney R-1830 Twin Wasp , but the Twin Wasp was chosen for most military versions and was also used by most DC-3s converted from military service.
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 .
DST with 1,000–1,200 hp (750–890 kW) Pratt & Whitney R-1830 Twin Wasp radial piston engines DC-3 Main prewar production variant fitted with 21 passenger seats, two 1,000–1,200 hp (750–890 kW) Wright R-1820 Cyclone engines DC-3A Improved DC-3 with two 1,000–1,200 hp (750–890 kW) Pratt & Whitney R-1830 Twin Wasp radial piston engines.
The primary user of the R-2000 was the Douglas DC-4. Mostly retired today, the R-1830 is still used on Douglas DC-3 and various museum aircraft and warbirds seen at airshows. It is not manufactured anymore, but spares are still available and there is still a market for second-hand engines and parts.
A preserved R-2800 engine at the National Museum of the United States Air Force: Type Radial engine: National origin: United States: Manufacturer Pratt & Whitney: First run 1937 First flown May 29, 1940 Major applications: Convair CV-240 family Douglas A-26 Invader Douglas DC-6 Grumman F6F Hellcat Martin B-26 Marauder Republic P-47 Thunderbolt ...
With Pratt & Whitney starting development of their own 2,800 in 3 (46 L) displacement 18-cylinder, twin-row radial as the R-2800 Double Wasp in 1937, Wright's first R-3350 prototype engines with a 3,350 in 3 (54.9 L) displacement were run in May of the same year. Development was slow, due to the complexity, and the R-2600 receiving development ...
The engine mounted on the nose could be shut off, decreasing the speed to 180 mph (160 kn; 290 km/h) and increasing the range of the aircraft. It was used by Polair and Maritime Patrol and Rescue . [ citation needed ] It was fitted with skis for use in polar regions and flew in the North Pole region out of Resolute Bay Airport in Canada.
It was then the only airworthy Li-2 known. 2002-2008 named Kármán Tódor [4] Shvetsov ASh-62 radial piston engine, mounted on Li-2 HA-LIX, 2008 Li-2 HA-LIX Cockpit, 2008. The Lisunov Li-2 (NATO reporting name: Cab), originally designated PS-84, was a license-built Soviet-version of the Douglas DC-3.