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    Title :

    Flight Tests of the Sikorsky HNS-1 (Army YR-4B) Helicopter. 2 - Hovering and Vertical-Flight Performance with the Original and an Alternative Set of Main-Rotor Blades, Including a Comparison with Hovering Performance Theory


    Contributors:
    F. B. Gustafson (author) / A. Gessow (author)

    Publication date :

    1945


    Size :

    28 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English