Accession Number : ADD015434

Title :   Expendable Sound Source.

Descriptive Note : Patent, Filed 10 Jan 91, patented 7 Apr 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Percy, Joseph L

Report Date : 07 Apr 1992

Pagination or Media Count : 23

Abstract : A low frequency, high powered underwater sound source includes a housing having disposed therein, a loudspeaker, a bladder disposed over the loudspeaker for containing a pressurized non-liquid sound transmission medium, a fill system for filling the bladder with a sound transmission medium, a vent system for venting the bladder of a sound transmission medium, a differential pressure sensor for comparing the pressure in the bladder with the ambient underwater pressure, a signal generating system to generate an acoustic signal at the loudspeaker, and a control system for controlling operation of the fill system, the vent system, the differential pressure sensor and the signal generating system.

Descriptors :   *LOUDSPEAKERS, *SOUND TRANSMISSION, *PATENTS, *UNDERWATER ACOUSTICS, ACOUSTIC SIGNALS, ACOUSTICS, BLADDERS, CONTROL SYSTEMS, FREQUENCY, HOUSINGS, LIQUIDS, LOW FREQUENCY, PRESSURE, SIGNALS, SOUND, UNDERWATER SOUND, VENTING, ACOUSTIC EQUIPMENT, ACOUSTIC DELAY LINES, COMPUTER PROGRAMS

Subject Categories : Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE