Extendible sonobuoy apparatus

Details Extendible sonobuoy apparatus Extendible sonobuoy apparatus

G - Physics

10

K

349/24

G10K 11/00 (2006.01) B63B 22/00 (2006.01)

Patent

CA 1262275

29 ABSTRACT: EXTENDIBLE SONOBUOY APPARATUS A sonobuoy has several components slidably mounted in an elongated tube (38). 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 sono- buoy deployment to provide a predetermined longitudinal spacing between the components when the sonobuoy is deployed. The components typically include an electronics canister (36), acoustic wave phase controls (72) and one or more active electroacoustic transducers (110). The components are attached to a plurality of flexible support cables (70). The cables are attached at their respective upper ends to the bottom of the canister (36) and are attached at their lower ends to the bottom of the tube (38). The cables are collapsed during the pre-deployed state (Fig. 5) and tautly extended during the deployed state (Fig. 6). Axial guide strips (54) are affixed to the inner surface of the tube. The canister and transducer have recesses (52,115) engaging the strips in a sliding fit to prevent rotation about the tube longitudinal axis during deployment. The electroacoustic transducer (110) may be mounted to the tube at a predeter- mined axial location on the tube (Fig. 6).

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