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Aviation History
1949
1949 - 1018.PDF
June 2nd, 1949 649 Built by the world's speed-record holder, this \8in span, 27-oz craft has a single- blade dynamically balanced airscrew. I Their Own Line the two-stroke diesel type, has made fantastically high speeds possible. American enthusiasts, in particular, have brought the ultra-fast captive model to a high pitch of effi- ciency, and, as these photographs show, they have not hesi- tated to base their designs on the latest supersonic full- scale developments—or even get a step or two ahead. Mean- while, the more enterprising among the free-flight prota- gonists on both sides of the Atlantic are achieving some remarkable results with radio control. Considerable pro- gress has also been made with rocket propulsion and with jet power-units of the impulse-duct type, (Right) Critical operation: ground-starting with a trolley nearly big enough for a full-scale aircraft. It contains batteries and a motor. (Below) An ultra-modern raked-ring type built by a U.S. Navy Engineer Officer. Note the clean engine fairing and cooling-air entry and exit ducts. (Below) Suggesting, except for the airscrew, one of the startling new jet fighter projects, this butterfly-tail model has iu engine in the wing. >
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