Underwater acoustic baffle enhancer

Details Underwater acoustic baffle enhancer Underwater acoustic baffle enhancer

1985-02-25

1987-06-02

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Sound absorbing panels

181175, 181288, 181290, E04B 182

Patent

active

046695737

ABSTRACT:
The lightweight underwater acoustic baffle with enhanced performance chareristics particularly at low frequencies is provided by a stiffened resistive screen means affixed in front of a compliant material for allowing the baffle to reflect on the compliant side and on the screen side, a rigid irregular shaped material means with a primary open surface area affixed to the screen as a means for attaining maximum stiffness with a minimum weight, a compliant means affixed behind the screen means, a water fluid sealing and container means within the baffle means for suffusing the stiffening core area and its attached screen for generating miniscule acoustic resistance in the screen and producing a greater impedance mismatch thus enhancing the insertion loss and baffle performance, and, an attachment affixed to the container means for attachment to a vessel.

REFERENCES:
patent: 1378420 (1921-05-01), Merritt
patent: 2884084 (1959-04-01), Sussman
patent: 3136380 (1964-06-01), McCoy et al.
patent: 4001473 (1977-01-01), Cook
patent: 4235303 (1980-11-01), Dhoore et al.
patent: 4353768 (1982-10-01), Goodman
patent: 4450544 (1948-05-01), Denaro et al.

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