This report is a review of the literature regarding propeller airplane far-field noise reduction. Near-field and cabin noise reduction are not specifically addressed. However, some of the approaches used to reduce far-field noise produce beneficial effects in the near-field and in the cabin. The emphasis is on propeller noise reduction but engine exhaust noise reduction by muffling is also addressed since the engine noise becomes a significant part of the aircraft noise signature when propeller noise is reduced. It is concluded that there is a substantial body of information available that can be used as the basis to reduce propeller airplane noise. The reason that this information is not often used in airplane design is the associated weight, cost, and performance penalties. It is recommended that the highest priority be given to research for reducing the penalties associated with lower operating RPM and propeller diameter while increasing the number of blades. Research to reduce engine noise and explore innovative propeller concepts is also recommended.


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    Titel :

    Assessment of Propeller Aircraft Noise Reduction Technology


    Beteiligte:
    F. B. Metzger (Autor:in)

    Erscheinungsdatum :

    1995


    Format / Umfang :

    124 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Propeller Driven Aircraft Cabin Noise Reduction

    Florentin, C. I. / Chow, L. C. / Confederation of European Aerospace Societies| AIAA | British Library Conference Proceedings | 1995


    Aircraft Propeller Noise

    H. H. Brouwer | NTIS | 1994


    Aircraft propeller noise

    Brouwer, H. H. / von Karman Institute for Fluid Dynamics | British Library Conference Proceedings | 1994


    Small aircraft propeller noise with ducted propeller

    Oleson, R. / Patrick, Howard | AIAA | 1998