Elements of the problem; some experimental results; difficulties yet awaiting solution. N.A.C.A. Technical Note, No. 47, Apr. 1921.


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    Title :

    Some notes on the helicopter


    Additional title:

    Aviation


    Contributors:

    Published in:

    Aviation ; 12 , n 8


    Publication date :

    1922


    Size :

    3 pages


    Remarks:

    5 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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