Analytical treatment for case of hovering flight results in simple closed-form solution that demonstrates that oscillatory lift under normal operating conditions can be less than 50% of its quasi-static value; it is shown that air loads in forward flight depend primarily on equivalent lift deficiency and downwash generated by steady-state blade vortex system; at low speeds, rotor wake can be drawn up into rotor leading edge and this is probably primary cause of transition roughness and noise encountered under certain flight conditions.


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    Title :

    Rotor blade harmonic air loading


    Additional title:

    AIAA J


    Contributors:

    Published in:

    AIAA Journal ; 2 , n 7


    Publication date :

    1964


    Size :

    16 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    Rotor blade harmonic air loading

    MILLER, R. H. | AIAA | 1964


    Periodic rotor blade aerodynamics including loading effects

    MANWARING, STEVEN / FLEETER, SANFORD | AIAA | 1988


    Periodic rotor-blade aerodynamics including loading effects

    MANWARING, STEVEN R. / FLEETER, SANFORD | AIAA | 1990