Accession Number : ADD015403

Title :   Towed Underwater Acoustic Speed Sensor Statement of Government Interest.

Descriptive Note : Patent Application, Filed 2 Jul 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Curtis, Chris S ; Green, John T ; Stottlemyer, Thomas R ; Wasik, Gregory T

Report Date : 02 Jul 1992

Pagination or Media Count : 11

Abstract : A system for measuring the speed in water of an underwater towed array has a 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.

Descriptors :   *PATENT APPLICATIONS, *ACOUSTIC SIGNALS, *LOGS(VELOCITY METERS), ELECTROACOUSTICS, TOWED ARRAYS, CORRELATION, SELF NOISE, UNDERWATER

Subject Categories : Acoustic Detection and Detectors
      Test Facilities, Equipment and Methods
      Submarine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE