Underwater electroacoustic transducers

Details Underwater electroacoustic transducers Underwater electroacoustic transducers

1989-02-14

1992-03-24

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367157, 367165, 367174, 310337, 310323, 310330, H04R 1700

Patent

active

050994611

ABSTRACT:
The FLEXBAR is a sonar transducer element that is basically a piezoceramic "free-free" flexure bar, but modified so as to radiate as a "monopole" rather than as a "dipole", and retaining the unique properties of being nodally mounted and dynamically balanced. One of the important consequences of this simple modification is the fact that the reaction forces on the FLEXBAR mountings and, the concomitant structure-borne vibrations, are virtually eliminated. This property, and related properties, result in unexpected but significant improvement in the performance of low-frequency, high-power, board-band sonar transducer arrays.

REFERENCES:
patent: 3704385 (1972-11-01), Schweitzer et al.
patent: 3982142 (1976-09-01), Goble
patent: 4010441 (1977-03-01), Richard
patent: 4131874 (1978-12-01), Geohegan
patent: 4429247 (1984-01-01), Feldman
patent: 4593160 (1986-06-01), Nakamura

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