Importance

Loading Importance Indicators...

Abstract

A dipping sonar transducer housing includes a generally cylindrical housing (10) which is suspended at the end of a cable (12) connected to tile housing through a vibration isolation module (14) which includes springs (22) to damp out noise, particularly that from the supporting vehicle. The housing (10) contains an upper water-tight chamber (26) which contains circuit boards (28) and preamplifiers (30) which serve as amplification and multiplexing means for the hydrophones carried on extendible arms (96, 60, 88); a second water-tight chamber (35) immediately below the first chamber (26) contains an electric motor (36) which drives a hydraulic pump (38) which provides fluid under pressure to an accumulator (40). Movable vertically on the outside of the second chamber (35) is a piston (48) which drives a plurality of links (54, 56) which extend the receiver array. Located in a third water-tight chamber (62) are electronic and electrical components (64, 66) connected to control operation of the projector transducers (78). A reel or drum (82) is rotatable by means of a hydraulic motor contained within the drum (82) to lower and raise the projectors (78). The drum (82), projectors (78) and interconnecting cables (80) are all carried within a chamber (76) which is free-flooding and surrounding this chamber is a sealed annular chamber (74) which contains a plurality of batteries (72) providing a power source for the electric motor (36) and the projector transducers (78).

Loading the Abstract Image...

First Claim