Study is presented of rotor systems designed for speeds of 200 knots and higher, based on theoretical work and correlation with recent flight test results; results show that at 200 knots optimum conditions are found for partially unloaded, partially tilted rotors; at about 250 knots, auxiliary propulsion seems to become mandatory, unless rotor is tilted 90°; near 300 knots, low rotor efficiencies and excessive rotor loads are found; study is confined to characteristic Bell rotor systems having high in-plane stiffness; other findings.


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    Title :

    High speed helicopter rotor design


    Additional title:

    Am Helicopter Soc -- J


    Contributors:
    Drees, J.M. (author)


    Publication date :

    1963


    Size :

    9 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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