File:An acoustic bubble density measurement technique for surface ship waters (IA acousticbubblede00hamp).pdf

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Original file ‎(1,168 × 1,560 pixels, file size: 13.18 MB, MIME type: application/pdf, 196 pages)

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An acoustic bubble density measurement technique for surface ship waters   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
Hampton, Stephen Wallace.;Atchley, Anthony Armstrong,
image of artwork listed in title parameter on this page
Title
An acoustic bubble density measurement technique for surface ship waters
Description
Thesis advisor, Anthony Atchley
Available from National Technical Information Service, Springfield, Va
"September 1987."
Thesis (M.S. in Systems Tech.) Naval Postgraduate School, Sep. 1987
Includes bibliographical references
The Dual Frequency Pump Method of acoustically determining point by point bubble cloud densities was studied to determine the practicality of using this acoustic technique to determine bubble densities in surface ship wakes. The dual frequency technique of acoustically detecting bubbles utilizes a high and low frequency sound field to insonify the target bubbles. The bubbles themselves then radiate sound at the sidebands of higher frequency. The frequency of the return sound is proportional to the bubble sizes present. The Dual Frequency Pump Method of bubble detection can differentiate and count many different sized bubbles and is, therefore, well suited for determining ship wake bubble density distributions. The theory, considerations, experimental results, and recommendations of this thesis support the application of the dual frequency acoustic techniques to the ship wake problem. Keywords: Theses; Acoustic bubble density measurement; Surface ship wakes; Bubble resonance; Dual frequency bubble detection; Ultrasonic bubble detection
Mode of access: World Wide Web
System requirements: Adobe Acrobat Reader
c.1, c.2
US Navy (USN) author
upgraded and digitize 2/17/09 dk

Subjects: Anti-submarine warfare
Language en_US
Publication date 1 September 1987, 00:00:00
Current location
IA Collections: navalpostgraduateschoollibrary; fedlink; americana
Accession number
acousticbubblede00hamp
Notes book is missing page 169 and 170,some content may be lost due to the binding of the book.
Authority file  OCLC: 1038781990
Source
Internet Archive identifier: acousticbubblede00hamp
https://archive.org/download/acousticbubblede00hamp/acousticbubblede00hamp.pdf

Licensing[edit]

Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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current01:19, 5 July 2020Thumbnail for version as of 01:19, 5 July 20201,168 × 1,560, 196 pages (13.18 MB)Fæ (talk | contribs)FEDLINK - United States Federal Collection acousticbubblede00hamp (User talk:Fæ/IA books#Fork8) (batch 1987-1989 #1962)

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