Rotol contra-propeller consists of two normal hydraulically operated constant speed full feathering propellers mounted on common center and driven, one behind other at spacing of 15 in. by two concentric shafts revolving one within other; both shafts are driven from same motor through suitable reduction gear; advantages and disadvantages cited. (See also Aeroplane v 61 n 1578 Aug 22 1941 p 211)
Contra-prop
Flight
Flight ; 40 , n 1704
1941
Aufsatz (Zeitschrift)
Englisch
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