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The Pratt & Whitney R-1830 Twin Wasp is an American air-cooled radial aircraft engine. It displaces 1,830 cu in (30.0 L) and its bore and stroke are both 5.5 in (140 mm). The design traces its history to 1929 experiments at Pratt & Whitney on twin-row designs. Production began in 1932 and it was widely used during the 1930s.
Although the DC-3s originally built for civil service had the Wright R-1820 Cyclone, later civilian DC-3s used the Pratt & Whitney R-1830 Twin Wasp engine. [2] The DC-3 has a cruising speed of 207 mph (333 km/h), a capacity of 21 to 32 passengers or 6,000 lbs (2,700 kg) of cargo, and a range of 1,500 mi (2,400 km), and can operate from short ...
Improved DC-3 with two 1,000–1,200 hp (750–890 kW) Pratt & Whitney R-1830 Twin Wasp radial piston engines. DC-3B Improved DC-3 with two 1,100 hp (820 kW) Wright R-1820-G101 Cyclone or two 1,200 hp (890 kW) Wright R-1820-G202A Cyclone engines. DC-3C Designation for ex-military C-47, C-53, and R4D aircraft rebuilt by Douglas Aircraft in 1946 ...
The R-2000 was an enlarged version of the Pratt & Whitney R-1830 Twin Wasp, with focus on reducing the manufacturing costs and fuel requirements.The bore was increased to 5.75 in (146 mm), while it still retained the 5.5 in (140 mm) stroke.
The Pratt & Whitney R-2800 Double Wasp is an American twin-row, 18-cylinder, air-cooled radial aircraft engine with a displacement of 2,800 cu in (46 L), and is part of the long-lived Wasp family of engines. The R-2800 saw widespread use in many important American aircraft during and after World War II.
The Pratt & Whitney Wasp was the civilian name of a family of air-cooled radial piston engines developed in the 1920s, 1930s and 1940s. [ 1 ] The Pratt & Whitney Aircraft Company (P&W) was founded in 1925 by Frederick B. Rentschler , who had previously been the President of Wright Aeronautical .
By 1931 Pratt & Whitney had started a development of their single-row Wasp nine-cylinder engine into the larger and much more powerful fourteen-cylinder, twin-row R-1830 Twin Wasp with a similar 1,800 in 3 (30 L) displacement that would easily compete with the single-row Cyclone. In 1935 Wright followed P&W's lead, and developed larger engines ...
Previously, the Great Northern Airways and the Far East Fur Trading Company had purchased 22 DC-3s from 1937 to 1939. This total consisted of 13 Cyclone powered DC-3s and nine Twin Wasp powered DC-3As, two of which were delivered un-assembled and assigned to a relatively new concern, Shōwa Aircraft. [3]