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The Engines of Pratt & Whitney: A Technical History. Reston. Virginia: American Institute of Aeronautics and Astronautics. ISBN 978-1-60086-711-8. Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. ISBN 0-7509-4479-X.
Pratt & Whitney R-1535 Twin Wasp Junior; Pratt & Whitney R-1690 Hornet; Pratt & Whitney R-1830 Twin Wasp; Pratt & Whitney R-1860 Hornet B; Pratt & Whitney R-2000 Twin Wasp; Pratt & Whitney R-2060 Yellow Jacket; Pratt & Whitney R-2180-A Twin Hornet; Pratt & Whitney R-2180-E Twin Wasp E; Pratt & Whitney R-2270; Pratt & Whitney R-2800 Double Wasp
Pratt & Whitney R-2180 was the designation for two closely related radial engines developed in the United States by Pratt & Whitney. They had two rows of seven cylinders each. Pratt & Whitney R-2180-A Twin Hornet - first run in 1936; Pratt & Whitney R-2180-E Twin Wasp E - first run in 1945
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.
The R-2180-E is effectively a fourteen-cylinder simplification of the twenty-eight cylinder R-4360 Wasp Major engine; its cylinders are the same size and displacement as those of the Wasp Major. [1] The R-2180-E Twin Wasp E was available in a "power-egg" installation certificated in 1945 for use as an engine upgrade for the Douglas DC-4. [2]
An early automotive use was the "head bolt heater", invented by Andrew Freeman in the United States and patented on 8 November 1949. [1] [12] [13] These early heaters replaced one of the engine's head bolts with a hollow, threaded shank containing a resistive heating element.
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.
The JT8D is an axial-flow front turbofan engine incorporating a two-spool design. There are two coaxially-mounted independent rotating assemblies: one rotating assembly for the low pressure compressor (LPC) which consists of the first six stages (i.e. six pairs of rotating and stator blades, including the first two stages which are for the bypass turbofan), driven by the second (downstream ...