Sport of flying a glider or sailplane. The craft is towed behind a powered airplane to an altitude of about 2,000 ft (600 m) and then released. The glider pilot makes use of rising currents of warm air, such as those above a sunlit field, to maintain or gain altitude. Instruments used include the altimeter, airspeed indicator, compass, and turn-and-bank indicator. National soaring contests, which include events for altitude, speed, distance, and accuracy in returning to a starting point, are held annually.
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Soaring and gliding flight of migrating Broad-winged Hawks: behavior in the Nearctic and Neotropics compared.
Dec 01, 2006; Each year, more than one million Broad-winged Hawks (Buteo platypterus) make a round-trip migration of 6,000-10,000 km along the...