Word: speeded
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Dates: during 1930-1939
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...know about speeds above 400 miles an hour," ruefully admitted the Army's greying Early-Bird pilot. "We are told that engines in the wings will deliver 30% more power at speeds over 300 miles an hour, and we ought to find that out, because we could use that added horsepower in more speed...
...nation that does know about speeds above 400 miles an hour, and well the Air Corps chief knows it, is Germany. Germany knows the advantages of streamlining engines into wings, and has the engines to do it. German designers already have their eyes set and their designing tools working for a speed of 500 miles an hour. Already its sleek Heinkel 112-U has hit 440 m.p.h. in level flight, and its Messerschmitt log is only a little slower...
...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 engine, now cooled with ethylene glycol (Prestone) instead of water, has been made more compact, as light...
...Godwin is an electrical engineer, Dr. Walker a chemist at Armour Institute of Technology. Both picked up photography as a hobby. In high-speed photography the shorter the exposure time, the more intense the illumination must be to produce a satisfactory impression on the film...
...Godwin and Walker are by no means the first to "freeze" rapid motion on photographic film. Perhaps the most famed high-speed photographer in the U. S. is Dr. Harold Eugene Edgerton of Massachusetts Institute of Technology, who for some years has used stroboscopic (intermittently flashing) light to take 6,000 pictures per second...