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Khevenhüller Schwingengleiter

A wing-flapping glider built and tested with moderate success by early Austrian experimenter and nobleman Graf Georg Khevenhüller at his castle, Burg Hochosterwitz, in Kärnten. In 1913 Count Khevenhüller built his last Schwingenflieger (as photographed), without any help of Wels. The machine had a weight of 50 kg and was constructed from bamboo, metal tubing and the wings of duralumin and balloon silk. The Count had the idea to flap the 12 meter span wings using human power, whereby a pulley construction was devised so that a person could beat the wings and hold the machine in the air. To give the glider its needed initial speed, a launching railway of 40 meters was laid down with a maximum slope of 20 degrees on the eastern part of Burg Hochosterwitz. Although this aircraft purportedly flew up to 100 meters in October 1913, all the attempts failed to make more than one flap of the wings, partly because of the instability of the machine in the air. After a severe crash, further attempts to fly the machine were halted and apparently remains preserved at Hochosterwitz. 

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