On the design of an acoustically isolating bubble screen for the Carr Inlet Acoustic Range.
dc.contributor.advisor | Sanders, James V. | |
dc.contributor.author | Marr, Kenneth William | |
dc.contributor.corporate | Naval Postgraduate School (U.S.) | |
dc.contributor.department | Physics and Chemistry | |
dc.contributor.secondreader | Wilson, O.B. Jr. | |
dc.date | June 1981 | |
dc.date.accessioned | 2012-11-20T00:17:05Z | |
dc.date.available | 2012-11-20T00:17:05Z | |
dc.date.issued | 1981-06 | |
dc.description.abstract | The theoretical acoustic behavior of an underwater bubble screen was examined using Rayleigh reflection theory. A microcomputer model simulates the acoustic impedance mismatch at the interfaces of an ideal, bubble screen. A sensitivity analysis indicates that the angle of incidence of sound energy and the speed of sound in the layer are the most important screen properties for predicting the insulating capability of a bubble screen. In the neighborhood of frequencies for which the screen thickness is an integral number of half wavelengths, the interference results in a reduced reflection coefficient and a corresponding increase in transmission through the screen. So that for a broad band spectrum wide enough to cover a number of such frequencies, the attenuation to be expected exceeds 10 dB only over about 90 percent of the spectrum. The interest for this work came from the need for a noise insulating screen at the Carr Inlet Acoustic Range. | |
dc.description.distributionstatement | Approved for public release; distribution is unlimited. | |
dc.description.service | Lieutenant, United States Navy | |
dc.description.uri | http://archive.org/details/ondesignofncoust1094520625 | |
dc.identifier.uri | https://hdl.handle.net/10945/20625 | |
dc.language.iso | en_US | |
dc.rights | This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. | |
dc.subject.author | acoustic isolation | |
dc.subject.author | acoustic reflection | |
dc.subject.author | bubble screen | |
dc.subject.lcsh | Physics | en_US |
dc.title | On the design of an acoustically isolating bubble screen for the Carr Inlet Acoustic Range. | en_US |
dc.type | Thesis | en_US |
dspace.entity.type | Publication | |
etd.thesisdegree.discipline | Engineering Acoustics | |
etd.thesisdegree.grantor | Naval Postgraduate School | |
etd.thesisdegree.level | Masters | |
etd.thesisdegree.name | Master of Science in Engineering Acoustics |