Accession Number : ADD000599

Title :   Line Hydrophone Array Element Calibrator.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Trott,W James ; Zalesak,Joseph F

Report Date : 04 Feb 1975

Pagination or Media Count : 6

Abstract : The patent describes a line hydrophone calibrator having three coaxial units forming an elongated tubular body open at each end. A central calibrator unit has three aligned piezoceramic tubes, two outer tubes producing sound and a center tube sensing the produced sound, the two outer units, fixed to the central unit, are metal sound pressure retaining tubes with sonic resistors disposed along them to dampen standing waves. The inner wall of the elongated body has a rubber tubular lining, the space between the two being filled with de-aerated liquid which may be alternately pressurized to clamp a hydrophone element centrally in the center sound sensing tube and depressurized to allow the array to be moved to test the next element.

Descriptors :   *Calibration, *Patents, Hydrophones, Acoustic arrays

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE