Nonresonant acoustic projector project : mechanical 5-50 Hz device provides stable underwater acoustic output with frequency and amplitude controllable and independent of depth Wilcox, H. A. creator Naval Ocean Systems Center (U.S.) contributor text book Ft. Belvoir Defense Technical Information Center 1980 1980
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ENG "12 June 1980." "Final Report: 1 May 1979 to 30 April 1980." The nonresonant acoustic projector was designed, fabricated, and tested without significant difficulties. It met all its specifications, and it proved the principle of a mechanical projector whose operating depth, frequency, and amplitude of piston throw can be simultaneously or independently varied without incurring significant interactions among the variables. The validity of considering the nonresonant acoustic projector as a standard source was demonstrated. (Author). Ocean engineering Underwater acoustics Technical report (Naval Ocean Systems Center (U.S.)), 579 https://www.biodiversitylibrary.org/bibliography/47862 550604720 10.5962/bhl.title.47862 MBW