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040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
0861 |aD68-21/19-1988E-PDF
1001 |aSponagle, Neil Charles, |d1955- |eauthor.
24510|aVariability of ship noise measurements / |cNeil Sponagle ; approved by L.J. Leggat.
264 1|aDartmouth, N.S. : |bNational Defence, Research and Development Branch, Defence Research Establishment Atlantic, |cJune 1988.
300 |a1 online resource (v, 34 pages) : |bgraphs.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aTechnical memorandum ; |v88/210
500 |aCover title.
500 |aDigitized edition from print [produced by Defence Research and Development Canada].
504 |aIncludes bibliographical references (page 32).
5203 |a"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"--Abstract, page ii.
546 |aIncludes abstracts in English and French.
650 0|aShips|xNoise|xMeasurement.
650 0|aPropellers|xCavitation.
650 0|aPropellers|xNoise.
650 0|aCavitation noise.
650 6|aNavires|xBruit|xMesure.
650 6|aHélices|xCavitation.
650 6|aHélices|xBruit.
650 6|aCavitation|xBruit.
7102 |aDefence Research Establishment Atlantic, |eissuing body.
830#0|aD.R.E.A. technical memorandum ;|v88/210.|w(CaOODSP)9.941838
85640|qPDF|s1.46 MB|uhttps://publications.gc.ca/collections/collection_2024/rddc-drdc/D68-21-19-1988-eng.pdf