Accession Number:

ADD020060

Title:

Sonar Transducer with Tuning Plate and Tuning Fluid

Descriptive Note:

Patent Application, Filed 9 Dec 2002

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

2002-12-09

Pagination or Media Count:

18.0

Abstract:

A method for maximizing the radiated power of a transducer, such as a sonar transducer, includes providing a transducer system comprising a transducer operating at a frequency f and having a radiating face, a tuning fluid having a density rhosub 1 and a speed of sound csub 1 a tuning plate having a density rhosub p and a thickness t, and an external fluid having a density rhosub 2 and a speed of sound csub 2 and tuning the transducer to have a maximum. specific acoustic resistance at the radiating face in accordance with the equation 2PI F RHOSUB PTSQUAREDRHOSUB 2 CSUB 2 RHO SUB 1 CSUB 1 PLUS RHOSUB 1 CSUB 1RHOSUB 2 CSUB 2rhosub 1 csub 1. The present invention also relates to changing the resonance frequency of a transducer including providing a transducer system with an operating frequency f, the tuning plate spaced from the transducer face by a distance S, and the. tuning fluid between the transducer face and the tuning plate and changing the resonance frequency in accordance with the equation rhosub 1 csub 1 cot2 pi f scsub 1.

Subject Categories:

  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE