A foam-metal liner for attenuation of fan noise was developed for and tested on a low-speed fan. This type of liner represents a significant advance over traditional liners, due to the possibility of placement in close proximity to the rotor. An advantage of placing treatment in this region is that the acoustic near field is modified, thereby inhibiting the noise-generation mechanism. This can result in higher attenuation levels than could be achieved by liners located in the nacelle inlet. In addition, foam-metal liners could potentially replace the fan rub strip and containment components, ultimately reducing engine components and thus weight, which can result in a systematic increase in noise reduction and engine performance. Foam-metal liners have the potential to reduce fan noise by 4 dB based on this study.


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    Titel :

    Low-Speed Fan Noise Attenuation from a Foam-Metal Liner


    Beteiligte:

    Kongress:

    14th AIAA/CEAS AeroAcoustics Meeting ; 2008 ; Vancouver, Canada


    Erschienen in:

    Erscheinungsdatum :

    01.01.2011



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Foam-Metal Liner Attenuation of Low-Speed Fan Noise

    Sutliff, Daniel / Jones, Michaei | AIAA | 2008


    Low-Speed Fan Noise Attenuation from a Foam-Metal Liner

    Sutliff, Daniel L. / Jones, Michael G. | AIAA | 2009


    Foam-Metal Liner Attenuation of Low-Speed Fan Noise

    Sutliff, D. / Jones, M. / American Institute of Aeronautics and Astronautics; Conferderation of European Aerospace Societies | British Library Conference Proceedings | 2008


    Low-Speed Fan Noise Attenuation from a Foam-Metal Liner

    Sutliff, D.L. | Online Contents | 2009