Cavitation-Resistant Sonar Array

Abstract

A cavitation-resistant sonar array having reduced spacing between transducer elements is provided. The array has a series of transducer elements attached to an array fixture with spacing between elements being fixed at one-quarter wavelength or closer. Cavitation caused by this close spacing is eliminated by replacing the water spaces between elements with a rho-c rubber which matches the acoustic impedance, z, of water, that is z = pc. The rho-c material is bonded to element to prevent loss of contact between the element and the spacer. A processing computation correcting signal data is provided to account for any differences in the speed of sound, c, in the rho-c material when compared to the speed of sound in water.

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Document Details

Document Type
Technical Report
Publication Date
Sep 17, 1998
Accession Number
ADD019356

Entities

People

  • Anthony A. Ruffa
  • Thomas R. Stottlemyer

Organizations

  • United States Department of the Navy

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acoustic Impedance
  • Acoustic Properties
  • Acoustic Signals
  • Acoustic Waves
  • Arrays
  • Beam Steering
  • Cavitation
  • Frequency
  • Impedance
  • Inventions
  • Materials
  • Sonar
  • Sonar Arrays
  • Towed Bodies
  • Towed Sonar
  • Transducers
  • Variable Depth Sonar

Readers

  • Microwave Engineering.
  • Phased Array Antenna Design.
  • Surface Coatings Technology.

Technology Areas

  • Space