00000nam 2200000zi 4500 9.943045 CaOODSP 20240920104924 m o d f cr bn||||||||| 240909e199206##nscad ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre D68-21/31-1992E-PDF Jones, D. F., author. An end-capped cylindrical hydrophone for underwater sound detection / D.F. Jones - S.E. Prasad - S.R. Kavanaugh; approved by C.W. Bright. Dartmouth, N.S. : National Defence, Research and Development Branch, Defence Research Establishment Atlantic, June 1992. 1 online resource (v, 24 pages) : illustrations, graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier Technical memorandum ; 92/216 Digitized edition from print [produced by Defence Research and Development Canada]. Includes bibliographical references (page 18). "A small end-capped cylindrical hydrophone has been designed and built for use as a low cost, general purpose hydrophone. In the frequency range 15 Hz to 5 kHz, the measured free-field voltage sensitivity of the hydrophone is 195 dB re 1 V/muPa, which agrees with the theoretical sensitivity for capped piezoelectric ceramic tubes. In addition, three resonance frequencies below 45 kHz have been measured and identified with circumferential, longitudinal, and flexural modes of vibration"--Abstract, page ii. Includes abstracts in English and French. Hydrophone. Underwater acoustics Instruments Design and construction. Hydrophones. Acoustique sous-marine Instruments Conception et construction. Defence Research Establishment Atlantic, issuing body. D.R.E.A. technical memorandum ; 92/216. (CaOODSP)9.941838 PDF 1.25 MB https://publications.gc.ca/collections/collection_2024/rddc-drdc/D68-21-31-1992-eng.pdf