Elliposidal acoustic mirror used to measure sound emitted at discrete points in burning turbulent jets. Mirror deemphasizes sources close to target source and excludes sources far from target. At acoustic frequency of 20 kHz, mirror resolves sound from region 1.25 cm wide. Currently used by NASA for research on jet flames. Produces clearly identifiable and measurable variation of acoustic spectral intensities along length of flame. Utilized in variety of monitoring or control systems involving flames or other reacting flows.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Acoustic Imaging of Combustion Noise


    Contributors:

    Published in:

    Publication date :

    1984-12-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





    Interferometric acoustic imaging of railway noise

    Escudie, B. / Chuollaz, M. / Parent de Curzon, E. | Tema Archive | 1988




    Acoustic and Entropy Waves in Nozzles in Combustion Noise Framework

    Mahmoudi, Y. / Dowling, A. P. / Stow, S. R. | AIAA | 2017