MEASUREMENT OF NOISE ON AN UNDERWATER TOWED BODY

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Authors
  1. Nishi, R.Y.
  2. Stockhausen, J.H.
  3. Evensen, E.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Noise has been measured on a streamlined body of revolution towed by a hydrofoil craft. The body was instrumented with accelerometers, flush-mounted hydrophones in the wall, and cylindrical hydrophones in the interior of the body. Towing was conducted with different lengths of cable. The noise in the body was found to result from body-wall vibrations, from farfield radiated noise sources, and from flow noise caused by pressure fluctuations in the turbulent boundary layer. Wall vibrations were found to be caused by cable vibrations, cavitation, and other flow-induced mechanisms.
Report Number
DREA-69-7 — Reprint
Date of publication
01 Jan 1970
Number of Pages
8
Reprinted from
J of the Acoustical Society of America, vol 48, no 3 (pt 2), 1970, p 753-758
DSTKIM No
71-02588
CANDIS No
8903
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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