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Published online by Cambridge University Press: 28 July 2016
The object of this note is to draw attention to a few facts which, taken together, suggest that, from a purely aerodynamic point of view, the difficulties involved in flight by human power may not be as great as is generally supposed.
Some years ago, in a lecture delivered to the Royal Aeronautical Society, the German soaring pilot, Lippisch, referred to an account of dynamic soaring given by Lanchester in his “ Aerodonetics ” and to some wind tunnel experiments made in Vienna.
Note on Page 609 * Journal of Roy. Aero. Soc. “ The Development, Design and Construction of Gliders and Sailplanes.” July, 1931, pp. 549-551.
Note on Page 610 * R. & M. 969. A note on the “ Katzmayr Efiect,” that is, the efiect on the characteristics of an aerofoil produced by an oscillating airstream.
Note on Page 610 † Further information is contained in a lecture delivered by Prof. Hill on 29th November, 1935, to the Institute of Mechanical Engineers.