Towed underwater acoustic speed sensor

Communications – electrical: acoustic wave systems and devices – Underwater system – Telemetering

Patent

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Details

367130, 367106, 367 89, H04B 1100

Patent

active

051669064

ABSTRACT:
A system for measuring the speed in water of an underwater towed array has towbody connected in close proximity to the array by means of a rope drogue. The towbody has a freely turning propeller that turns a shaft that has a rotor magnet. Magnetic pulses from the rotor magnet are converted first to an electrical and then to an acoustical signal. The acoustical signal from the towbody is received by the towed array and converted back to an electrical signal that is transmitted along a line to a ship that is towing the array. The ship then displays the detected speed and/or utilizes the information received for control purposes.

REFERENCES:
patent: 4065746 (1977-12-01), Thompson
patent: 4324135 (1982-04-01), Peyton

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