Blade-vortex interaction is the source mechanism for a prominent impulsive noise created by rotorcraft. An experimental study of two-dimensional blade-vortex interaction was performed to determine controlling parameters governing the strength of the blade-vortex interaction process. The interaction process is shown to involve a combination of effects on the vortex, including changes in trajectory and distortion of the vortex core shape while the blade undergoes significant transient loading. Calculation of the acoustic field produced by the interaction using measured unsteady blade surface pressure data are presented. The effects of the interaction process on the blade and the vortex are shown to be increased by both reduction of blade-to-vortex spacing and increase in blade loading.


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    Title :

    Experimental observations of two-dimensional blade-vortex interaction


    Additional title:

    Experimentelle Beobachtung von zweidimensionaler Schaufelblatt-Wirbel-Wechselwirkung


    Contributors:

    Published in:

    AIAA Journal ; 28 , 8 ; 1353-1359


    Publication date :

    1990


    Size :

    7 Seiten, 6 Bilder, 22 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English







    Blade-vortex interaction

    Poling, David R. / Dadone, Leo / Telionis, Demetri P. | NTRS | 1989


    Blade-vortex interaction

    POLING, DAVID / DADONE, LEO / TELIONIS, DEMETRI | AIAA | 1987