Poscara helicopter being tried by French Military Commission. Each of two propellers comprises six spokes which carry wings of biplane design. Propellers revolve at 200 r.p.m.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    A helicopter for military purposes


    Additional title:

    Sci. Am


    Published in:

    Publication date :

    1921


    Remarks:

    1 Fig.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :