A processing system has been developed to meet increasing demands for detailed noise measurement of aircraft in wind tunnels. Phased arrays enable spatial and amplitude measurements of acoustic sources, including low signal-to-noise sources not measurable by conventional measurement techniques. The Microphone Array Phased Processing System (MAPPS) provides processing and visualization of acoustic array measurements made in wind tunnels. The system uses networked parallel computers to provide noise maps at selected frequencies in a near real-time testing environment. The system has been successfully used in two subsonic, hard-walled wind tunnels, the NASA Ames 7- by 10-Foot Wind Tunnel and the NASA Ames 12-Foot Wind Tunnel. Low level airframe noise that can not be measured with traditional techniques was measured in both tests.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Microphone Array Phased Processing System (MAPPS): Phased Array System for Acoustic Measurements in a Wind Tunnel


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Bardina, Jorge (Autor:in) / Mosher, Marianne (Autor:in) / Barnes, Michael (Autor:in) / Watts, Michael E. (Autor:in)

    Kongress:

    World Aviation Congress & Exposition ; 1999



    Erscheinungsdatum :

    1999-10-19




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    The microphone array phased processing system (MAPPS)

    Watts, Michael / Mosher, Marianne / Barnes, Michael | AIAA | 1996



    Implementation of a Phased Microphone Array in a Closed-Section Wind Tunnel

    Ho-Chul Shin / Will Graham / Pieter Sijtsma et al. | AIAA | 2007



    Calibration of microphone arrays for phased array processing

    Mosher, Marianne / Watts, Michael / Jovic, Srba et al. | AIAA | 1997