Frequency analysis of underwater explosions in gas-water resonator
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Authors
Keimig, Allen D., Jr.
Hofmockel, John L.
Subjects
Advisors
Stentz, D.A.
Date of Issue
1961
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
This thesis presents the results of an experimental investigation of the frequency spectrum of the acoustic output from underwater explosions in a gas-water resonator. Measured amounts of hydrogen, oxygen, and nitrogen were used as an explosive charge in cylindrical containers and fired at depths between 25 and 200 feet. Excess unburned gas remaining in the container caused the sound to be concentrated in certain low frequencies; these frequencies correspond closely to predictions based on Helmholtz Resonator calculations. The spectrum was influenced by surface reflection and by frequency shifts observed during the explosive pulse . A narrow band low frequency spectrum analysis system is described.
Type
Thesis
Description
Series/Report No
Department
Electronics
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NPS Report Number
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Citation
Distribution Statement
Approved for public release; distribution is unlimited.
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.