Author became chief test pilot for Sikorsky Aircraft in 1941 and held that position during next 3 yr; his story is personal one, showing steps by which success has been reached and discussing future possibilities. Eng Soc Lib, NY. ($2.75) (London)
Pioneering helicopter
Pioneering Helicopter
1945
161 pages
Illustrations, Diagrams, Maps
Book
English
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SLUB | 1945
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