The Aeronautical Journal: Volume 38 - Issue 287

Researches into the Theory of the Townend Ring
G. Otten
Published online by Cambridge University Press:

28 July 2016, pp. 885-935
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The Townend Ring has been the subject of a large amount of experimental research and its general characteristics are now well understood. The following paper is the first theoretical treatment of the ring which has appeared. It was originally presented as a thesis to the University of Delft by Capt. G. Otten and published in Holland in November, 1932. The author has made the following abbreviated translation of it into English in collaboration with Dr. H. C. H. Townend, who also suggested a few modifications.

Airships in Peace and War. By Capt. J. A. Sinclair. Published by Rich and Cowan. Price 18/-.
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28 July 2016, pp. 947-948
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Properties and Strength of Materials. G. I. D. Haddon. Published by Sir Isaac Pitman. 8/6 net.
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28 July 2016, p. 948
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Elementary Quantum Theory. By R. W. Gurney. Cambridge University Press. Price 8/6.
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28 July 2016, pp. 948-949
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The Aeronautical Journal