An investigation of helicopter rotor noise at model scale was conducted in the Langley 4 by 7 meter tunnel. The program described was the first of a planned three-phase project whose purpose was to examine the characteristic noise mechanism involved in main rotor/tail rotor interaction noise. This first phase was conducted with a main rotor only, in order to identify the characteristic noise generated by only the main rotor. The aerodynamic operating conditions of the rotor system were defined during the test. The acoustic data were properly referenced.


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    Titel :

    Rotor Performance Characteristics from an Aeroacoustic Helicopter Wind-Tunnel Test Program


    Beteiligte:
    D. R. Hoad (Autor:in) / J. W. Elliott (Autor:in) / N. M. Orie (Autor:in)

    Erscheinungsdatum :

    1986


    Format / Umfang :

    99 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch







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