Author as long ago as 1907 not only visualized advantages of contra-rotating propeller or as he termed them "coaxial propellers with reverse rotation," but patented form of drive, details of which are given; suggestions for further research.
Contra-props
Flight
Flight ; 40 , n 1720
1941
2 pages
Aufsatz (Zeitschrift)
Englisch
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Online Contents | 2010
Online Contents | 1994
Engineering Index Backfile | 1938
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