Device constructed by Lilienthal for the measurement of lift and drag of artificial wings from 1874 upwards. The basic results have been published in Lilienthal's book "Birdflight as the Basis of Aviation" in 1889
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Details
Title: Whirling arm device
Creator: Otto Lilienthal
Date Created: 1989
Location: Lichterfelde bei Berlin, Lichterfelde (near Berlin), Germany