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 Flight v 48 n 1906 July 5 1945 p 10-2)


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    Title :

    Helicopter progress


    Additional title:

    Aeroplane


    Published in:

    Aeroplane ; 69 , n 1783


    Publication date :

    1945


    Size :

    13 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    Helicopter progress

    Engineering Index Backfile | 1949


    Helicopter progress

    Engineering Index Backfile | 1945


    Real helicopter progress

    Poulsen, C.M. | Engineering Index Backfile | 1939


    Helicopter progress at Yeovil

    Engineering Index Backfile | 1948


    Review of helicopter progress

    Wigdorichik, L.S. | Engineering Index Backfile | 1951