Controlled compliance acoustic baffle
US5621701A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1989 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Aug 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/205
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An acoustic baffle for reflecting sound waves and rejecting background interference noise for use with a hydrophone array. The baffle utilizes a plurality of lenticular resilient elements embedded in a compliant foam elastomer compound. The embedded elements provide control of overall baffle compliance for submarine applications, particularly for high hydrostatic pressure operation. The resilient members are formed from pairs of resilient lenticular shaped elements which are integrally bonded to a highly damped constrained viscoelastic layer to provide uniform noise reduction performance over a broad frequency range. The pairs of elements are joined at their ends by compliant end caps which provide minimum constraint on the motion of the ends, thus limiting bending stresses in the elements. The members are designed to freely deflect up to a maximum operating depth, at which point the elements bottom and no further deflection occurs, thereby assuring that deflections of the members do not exceed a design limit, even when the apparatus is tested at depths exceeding its operating range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.