Communications – electrical: acoustic wave systems and devices – Transponders – Sonobuoys and sonobuoy systems
Patent
1987-04-14
1988-10-11
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Transponders
Sonobuoys and sonobuoy systems
367 4, 367159, 367173, 441 1, H04B 159
Patent
active
047776277
ABSTRACT:
A sonobuoy has several components slidably mounted in an elongated tube. The components are longitudinally stacked one above the other at the lower end of the tube when the sonobuoy is in a pre-deployed state and are caused to slide longitudinally upwardly in the tube during sonobuoy deployment to provide a predetermined longitudinal spacing between the components when the sonobuoy is deployed. The components typically include an electronics canister, acoustic wave phase controls and one or more active electroacoustic transducers. The components are attached to a plurality of flexible support cables. The cables are attached at their respective upper ends to the bottom of the canister and are attached at their respective lower ends to the bottom of the tube. The cables are collapsed during the pre-deployed state and tautly extended during the deployed state. Axial guide strips are affixed to the inner surface of the tube. The canister and transducer have recesses engaging the strips in a sliding fit to prevent rotation about the tube longitudinal axis during deployment. The electroacoustic transducer may be mounted to the tube at a predetermined axial location on the tube.
REFERENCES:
patent: 3444508 (1969-05-01), Granfors
patent: 4247143 (1981-01-01), Putman
patent: 4546459 (1985-10-01), Congdon
patent: 4689773 (1987-08-01), Congdon et al.
Briody Thomas A.
Magnavox Government and Industrial Electronics Company
Pihulic Daniel T.
Seeger Richard T.
Streeter William J.
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