Low frequency dipole hydrophone transducer

Details Low frequency dipole hydrophone transducer Low frequency dipole hydrophone transducer

1973-04-19

1979-07-03

Tudor, Harold J.

Communications: electrical

Selective

With multidigit encoder

310 26, H04B 1300

Patent

active

041602315

ABSTRACT:
A dipole hydrophone which includes a radiation target for acoustic energy and a counterbalancing mass. A first multilaminar magnetostrictive arm is connected to the radiation target at its center gravity and a second multilaminar magnetostrictive arm is similarly connected to the center of gravity of the counterbalancing mass. The lower portion of each arm is slotted to define two legs, and a permanent magnet, in conjunction with the slotted structure forms a closed magnetic path for flux. Windings for sensing a change in flux are slipped over the leg portions, yielding a high gain device. The two arms are connected by a coupling member which is compliantly suspended from a support structure.

REFERENCES:
patent: 2160876 (1939-06-01), Lakatos
patent: 2475148 (1949-07-01), Massa
patent: 2476778 (1949-07-01), Smoluchowski
patent: 2962695 (1960-11-01), Harris
patent: 2974530 (1961-03-01), Jaouen
patent: 3160848 (1964-12-01), Key, Jr. et al.
patent: 3187300 (1965-06-01), Brate
patent: 3207958 (1965-09-01), Chang-Sun Chang

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