Sonar antenna for use as the head of an underwater device, and m

Details Sonar antenna for use as the head of an underwater device, and m Sonar antenna for use as the head of an underwater device, and m

1987-03-26

1988-03-15

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367173, 367176, 29602A, 114 213, 26427216, H04R 102, F42B 1901

Patent

active

047317639

ABSTRACT:
A sonar antenna is provided which can serve as the head of an underwater device, e.g., a torpedo, and a method for manufacturing the same. The sonar antenna is formed of a block of syntactic foam rigid enough to withstand submersion hydrostatic pressures. The block has a plurality of housings formed in the outer surface thereof, with at least one electro-acoustic transducer in at least one housing flush with the outer surface of the block. The base of the block is provided with a flanged sleeve by which the antenna can be mounted to the front end of the underwater device, with an acoustic decoupling fitting provided between the flange and the underwater device. The entire block, transducers and flange are surrounded by a sealed envelope which is transparent to acoustic waves. The outer surface of the sealed envelope serves as the outer surface of the sonar antenna and as the front end of the underwater device.

REFERENCES:
patent: 2899923 (1959-08-01), Daly et al.
patent: 3113287 (1963-12-01), Renner
patent: 3139056 (1964-06-01), Boswell et al.
patent: 3296586 (1967-01-01), Midlock et al.
patent: 3353150 (1967-11-01), Jacox
patent: 3372662 (1968-03-01), Nisewanger
patent: 3663934 (1972-05-01), Whitehouse et al.
patent: 4004266 (1977-01-01), Cook et al.
patent: 4110727 (1978-08-01), Kriege
patent: 4192246 (1980-03-01), Hodges et al.
patent: 4463454 (1984-07-01), Hemond et al.

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