Flextensional Hydrophone
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Authors
Garrett, Steven L.
Danielson, Donald A.
Subjects
Advisors
Date of Issue
1990-08-21
Date
Publisher
United States Patent and Trademark Office (USPTO)
Language
Abstract
An omnidirectional hydrophone having an elastic shell which is spheroidal so that the circumference of the shell about different axes changes differentially when the shell is subjected to pressure variations. The differences in circumference are advantageously measured by an optical fiber interferometer having one leg wound about the equatorial circumference of the shell and another leg wound about its meridional circumference. The shell may be an oblate spheroid having the ratio of its major axis to is minor axis greater than about (2-v)!, where v is Poisson's ratio of the shell material, so that the shell narrows along one axis and widens along the other when the shell is subjected to a pressure change.
Type
Patent
Description
Series/Report No
Department
Organization
Identifiers
4,951,271
NPS Report Number
Sponsors
Funding
Format
Citation
Distribution Statement
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.