Theory of direct-lifting screw propeller; safety of helicopters in forced descents; horizontal travel; stability and control of helicopter; results of tests.


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    Title :

    The problem of the helicopter


    Additional title:

    Nat. Advisory Committee Aeronautics Technical Notes


    Contributors:


    Publication date :

    1920


    Size :

    18 pages


    Remarks:

    2 Figs. and 2 blue prints


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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