The influence of the rotor blowing coefficient on the calculated roots of the longitudinal and lateral motion was examined for a range of values of the rotor lift and the blade flap frequency. The control characteristics of a helicopter with a circulation controlled rotor are discussed. The principal effect of the blowing is a reduction in the rotor speed stability derivative. Above a critical level of blowing coefficient, which depends on the flap frequency and rotor lift, negative speed stability is produced and the dynamic characteristics of the helicopter are radically altered.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Calculated Hovering Helicopter Flight Dynamics with a Circulation Controlled Rotor


    Contributors:
    W. Johnson (author) / I. Chopra (author)

    Publication date :

    1977


    Size :

    40 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English