Word: radial
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Dates: during 1930-1939
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Today, engines for big ships are produced by only three U. S. factories: Pratt & Whitney (at East Hartford, Conn.) and Wright (at Paterson, N. J.), which produce radial, air-cooled engines, and General Motors Corp.'s Allison Engineering Co. (Indianapolis), which is just getting into production on liquid-cooled inline motors. If there is ever a bottleneck in the production of aircraft for war it will be in the compact engine business, but last week it did not appear close. For Pratt & Whitney and Wright had finished their expansions for wartime business, were operating at no more than...
Ever since Colonel Lindbergh flew one across the Atlantic in 1927, most U. S. aeronautical engineers have been developing air-cooled, radial engines with cylinders raying out like huge wheel-spokes around a short, chunky crankshaft. But as power was increased, radial engines grew so bulky that they dragged on high-speed planes...
Last week, however, it was Pratt & Whitney's turn to smile all over its corporate face. Over its East Hartford, Conn, plant roared a Vultee A19 motored by an engine of the old radial, air-cooled type that was half again as powerful as the Allison. Weighing slightly less per horsepower than the Allison, it could fit into small pursuit planes as snugly as a cartridge in a rifle breech...
...potbellied bombers on the Army Air Corps Southern California airdrome. Major General Henry H. Arnold, greying Chief of the Air Corps, surveyed with particular approval her twin engines, Prestone-cooled V12 Allisons of 1,000 horsepower each, faired trimly into the metal wing. Well he knew that broad-beamed radial air-cooled motors, such as the big U. S. engine builders have brought to perfection, could not be used on such a ship without protruding in speed-killing humps on the wing's leading edges, that only the Allison (TIME, Jan. 30) could...
...Army's twin-motored fighter, the Airacuda. More recently, the 1,000-horsepower Allison was built into a modification of the Army's snub-nosed Curtiss P-36. The ship has a speed of 280 miles an hour with a 1,100-horsepower radial. Powered with an Allison engine with 100 less horsepower, the lancelike P37 gained 75 m.p.h...