Word: radial
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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...
...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...
While American engine builders have plugged away for years on the development of the air-cooled radial engine, now close to perfection, German designers have worked at the liquid-cooled, in-line power plant. Result for the U. S.: the radial engine, with cylinders ranged like the spokes of a wheel around a short crankshaft, has grown to such size that its drag on the high-speed airplane is now of alarming proportions. (Head resistance increases as the square of the speed, e.g., if speed is tripled, drag becomes nine times as great.) Results for German designers: the in-line...
...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...
...Shapley was on the committees on stellar parallaxes, stellar photometry, variable stars, nebulae and globular clusters, and stellar statistics. Dr. Bok was on the committees on stellar statistics and on stellar radial velocities. Dr. Menzel was on the committees on solar radiation, solar eclipses, and spectral photometry...