CHARACTERIZATION OF HARMONIC DISTORTION OF THE SMALL DREA FFR PROJECTOR

Authors
  1. Siurna, L.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Sparton of Canada Ltd, London ONT (CAN)
Abstract
A summary of results of a characterisation of harmonic distortion of two small DREA FFR projectors is provided. The tests were carried out at the NUWC Detachment Seneca Lake test facility in March 1993. harmonic distortion levels were observed as a function of frequency, drive voltage and depth. During the course of the test both projectors eventually failed at the deepest test depth. This limited the characterisation effort considerably. Results obtained here suggest that harmonic distortion levels for the small FFR are: (1) directly proportional to drive voltage at all frequencies, (2) inversely proportional to test depth, and (3) roughly directly proportional to the transducer frequency response, and hence support the hypothesis that high power measurements obtained earlier at DREA are cavitation limited. These results do not, however, permit a quantification of the level of the inherent non-linear behaviour attributable to the transducer's design.
Report Number
DREA-CR-93-452;TRL-93-505 — Contractor Report (Final)
Date of publication
01 Mar 1993
Number of Pages
166
DSTKIM No
94-05145
CANDIS No
145326
Format(s):
Hardcopy;Originator's fiche received by DSIS

Permanent link

Document 1 of 1

Date modified: