Download or read book The Question of Spontaneous Wing Oscillations written by B. v Schlippe and published by . This book was released on 1936 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determination of the spontaneous oscillations of a wing or tail unit entail many difficulties, both the mathematical determination and the determination by static wing oscillation tests being far from successful and flight tests involving very great risks. The present paper gives a method developed at the Junkers Airplane Company by which the critical velocity with respect to spontaneous oscillations of increasing amplitude can be ascertained in flight tests without undue risks, the oscillation of the surface being obtained in the tests by the application of an external force.