Underwater acoustic devices

Details Underwater acoustic devices Underwater acoustic devices

H - Electricity

04

R

349/24

H04R 1/44 (2006.01) B06B 1/06 (2006.01) B63B 22/00 (2006.01) G10K 11/00 (2006.01)

Patent

CA 1192652

ABSTRACT UNDERWATER ACOUSTIC DEVICES The invention relates to underwater acoustic devices and arrays formed from such devices, and which in use are suspended in water from a buoy. Known acoustic devices for underwater operation are bulky and have high electrical power input requirements and are not suitable for use as elements of a multitransducer array. The invention provides an underwater acoustic device which has a tube composed of polymeric piez- electric material having a high piezoelectric constant and a low Young's modulus, rigid spacer tubes or rods spaced apart and nested within the piezoelectric tube so as to define axially spaced portions of piezoelectric tube between the spacer tubes. Electrical terminals for receiving output from the piezoelectric tube contact inner and outer curved surfaces of each of the axially spaced portions of the piezoelectric tube thus divided the tube into several tubular transducer elements.

396958

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