A new wall-mounted phased microphone array was designed, built, and calibrated for testing in closed or open test section wind tunnels. Two configurations were evaluated - one with microphone plate flush with the tunnel surface and the other with microphone plate recessed behind a porous screen. The arrays were successfully operated to Mach number of 0.4 and were calibrated using an in-flow speaker source during a recent study at the AEDC NFAC 40- by 80-Ft Wind Tunnel at NASA Ames.


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    Titel :

    Low-Cost Phased Microphone Array Design for Moderate-Scale Aeroacoustics Tests


    Beteiligte:
    Horne, Clifton (Autor:in) / Burnside, Nathan (Autor:in)

    Kongress:

    2014 Seedling Seminar ; 2014 ; Moffett Field, CA, United States


    Erscheinungsdatum :

    2014-02-19


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch






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