Accession Number : ADD005251

Title :   Solid Filled Vibration Isolation Module for a Towed Sonar Array.

Descriptive Note : Patent,


Personal Author(s) : Miller,Howard A ; Smith,Robert R ; Nichols,Charles S

Report Date : 16 May 1978

Pagination or Media Count : 4

Abstract : A vibration isolation module is interposed between a sonar array and its towing cable. A number of nylon cords contained within the vibration isolation module normally bear the load induced by the hydrodynamic drag of the array. Since the nylon cords are encased in a rubber-like envelope, noise and vibrations created by, the towing cable are damped and prevented from overly interfering with the responsiveness of the sonar array. When, however, the array's drag is increased by, for example, a faster towing speed, the cords stretch and a central braided member bears the load. The braided member has a strength considerably in excess of the nylon cords to assure that the towed sonar array is not lost. Since the braided member is filled with a viscous material and there are no other voids in the rubber-like envelope, the module can be pulled through a hull penetrator to deploy or retrieve the sonar array. (Author)

Descriptors :   *Patents, *Sonar arrays, Vibration, Towed arrays

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE