In a simple prescribed rotor wake model for hover developed at ARL, generalized model rotor experimental data are used to position the tip vortices. Parametric studies are conducted to explore the sensitivity of calculated induced power with the positioning of these vortices. Calculated induced power, obtained directly by extrapolating model data to the full-scale case of a UH-1H Iroquois helicopter, is compared with flight data, and the required repositioning of the vortices to match flight data is given.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Effect of Rotor Wake Geometry Variation on Hover Induced Power Estimation for a UH-1H Iroquois Helicopter


    Contributors:
    K. R. Reddy (author)

    Publication date :

    1986


    Size :

    25 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    Visualization of a helicopter rotor wake in hover

    Martin, Preston / Bhagwat, Mahendra / Leishman, J. | AIAA | 1999



    Helicopter Rotor Aerodynamic Modeling in Hover: AIAA Standardized Hover Evaluations

    Hariharan, Nathan S. / Egolf, T Alan / Narducci, Robert et al. | AIAA | 2015