An evaluation is conducted of the acoustic field radiated when an airfoil encounters a gust in the plane of motion, with a view to the prediction of helicopter tail rotor noise. The analysis is based on the unsteady thickness noise theory of Glegg (1987). Sound radiation is shown to be dominated by the transient effect of the blade tip moving into the velocity deficit, so that the effects of blade rotation are not important.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Sound radiation from an airfoil encountering an oblique gust in its plane of motion


    Contributors:

    Published in:

    Publication date :

    1989-12-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English


    Keywords :



    Combined Theoretical and Experimental Investigation of Airfoil Encountering Transverse Gust

    Lee, Yi Tsung / Gementzopoulos, Antonios / Chitrala, Nitin et al. | AIAA | 2023