Experiments were conducted to document the tip vortex geometries and interactional effects betwen a hovering rotor and a body representing a simplified helicopter fuselage. The wide-field shadowgraph technique was used to visualize the rotor tip vortices and to obtain quantitative information on the trajectories, with and without the presence of the body. It was found that the effects of the body caused significant changes to both the radial contraction and axial displacements of the tip vortices compared to the isolated case. Direct impingement of the tip vortices on the body surface was also observed, and found to cause large local wake deformations. The rotor performance was significantly affected by the body, producing a higher figure of merit relative to the isolated case.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Experimental study of rotor wake/body interactions in hover


    Contributors:
    Bagai, A. (author) / Leishman, J. G. (author)


    Publication date :

    1992-10-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Experimental study of rotor wake/body interactions in hover

    Bagai, A. / Leishman, J.G. | Tema Archive | 1992


    A study of rotor wake development and wake/body interactions in hover

    Bagai, A. / Leishman, J. G. / Samak, D. K. | NTRS | 1991


    Free-wake analysis of a rotor in hover

    CHEN, C. / VELKOFF, H. / TUNG, C. | AIAA | 1987


    Visualization of a helicopter rotor wake in hover

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