Absorptive sonar baffle
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United States of America Patent
Stats
-
May 22, 1984
Grant Date -
N/A
app pub date -
Nov 16, 1981
filing date -
Nov 16, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The acoustical energy absorbing baffle has a pair of restricted orifice screens rigidly secured in parallel, spaced relation by a lattice stiffener. The screen-stiffener assembly is immersed in a viscous fluid contained within a tank sealed with an elastic diaphragm. Incident acoustical energy is transmitted through the diaphragm and translated into energy absorbing motion of the fluid through the restrictive screens. A compliant mass is acoustically coupled to the fluid to augment fluid particle velocity through the screens and to further absorb energy.
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