Ship noise measurements are subject to relatively large variations that should be considered when these data are used. For modern naval ships operating at high speeds, propeller cavitation is the dominant source of radiated noise. This paper examines the variability of the broadband component of propeller cavitation noise based on statistical analysis of repeated measurements for several ships and propellers and on a conceptual model of the measurement process. Confidence intervals are determined for measured noise spectra and correlations are sought between the variability and certain important parameters. To explain these results, a number of phenomena are discussed that affect either the sound transmission properties of the water, the measurement procedure, or the acoustic source strength of propeller cavitation. (fr)


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Variability of Ship Noise Measurements


    Beteiligte:
    N. Sponagle (Autor:in)

    Erscheinungsdatum :

    1988


    Format / Umfang :

    42 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Variability in Airplane Noise Measurements

    H. R. Henderson / D. A. Hilton | NTIS | 1968


    Variability in airplane noise measurements

    Henderson, H. R. / Hilton, D. A. | NTRS | 1968


    Observed variability of aircraft noise footprint measurements

    Maglieri, D. J. / Henderson, H. R. / Hilton, D. A. | NTRS | 1977


    NOISE REDUCING SHIP

    Europäisches Patentamt | 2018

    Freier Zugriff

    SHIP AND NOISE REDUCTION METHOD FOR SHIP

    WATANABE TAKASHI | Europäisches Patentamt | 2015

    Freier Zugriff