Word: airings
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Dates: during 1920-1929
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...Bullard preference for Lucky Strikes promptly faded into thin air and the General returned to the limbo of the National Security League...
...anyone can keep a glider, i.e., a motorless airplane, in the air for 20 hours, he can win a $3,000 prize and kudos; for ten hours, $2,000 and cheers. Such were the offers made last week by Edward S. Evans, Detroit manufacturer and founder of the National Glider Association...
...aerodynamics of gliding is that of motored flight. First airplanes lacked motors. Otto Lilienthal, air pioneer (anda German) was killed by his glider falling. But few others have had serious accidents...
...motive force gliders use air currents which swell over hilly terrain. Dune country, such as that near Chicago and off the Carolinas, is best for gliding. Knolls, ranges or terraces should slope toward the prevailing wind. One knoll should be 50 to 200 feet above all. And all should be bare of poles, trees, shrubs or other obstructions...
...glider is yanked into a 10 to 15 m. p. h. wind, which supplies lift. Thereafter it is the pilot's job to jockey his plane upon the air currents ascending over the rolling terrain. Air usually rises to twice the height of an obstruction. If the pilot can get above a cloud he has an easy time. Wind always rushes up over the edge of a cloud. And the up-moving air is what the glider pilot wants...