Illustrated notes on design and performance of Sikorsky R-4B, 3-bladed rotor cabin helicopter powered by 185-hp 7-cyl Warner Super Scarab R-550-1 radial engine driving both vertical and tail rotors; at RAF instructional school at Andover, five or six hours instruction is considered sufficient to train pilot. (See also Aeroplane v 69 n 1783 July 27 1945 p 89-101)
Helicopter progress
Flight
Flight ; 48 , n 1906
1945
3 pages
Article (Journal)
English
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Engineering Index Backfile | 1945
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