Accession Number : AD0752759

Title :   Alternate Lead and Ceramic Stave Free-Flooded Cylinder Transducer.

Descriptive Note : Research and development rept. Jan-Jun 72,

Corporate Author : NAVAL UNDERSEA CENTER SAN DIEGO CALIF

Personal Author(s) : Fender,William F. ; Holloway,Jack W.

Report Date : OCT 1972

Pagination or Media Count : 13

Abstract : A modified free-flooded piezoelectric cylinder transducer was designed, built and tested that provides a source level of 85 dB re 1 mu Pa.m/V over a frequency range of 2.4 - 9.6 kHz. Actual dimensions of the transducer are these: outside diameter, 4.5 inches; wall thickness of ceramic, .25 inches; and height of cylinder, 5 inches. Conventional design was modified by replacing half the staves in an all-ceramic cylinder with lead staves. The modified cylinder has a fundamental radial resonance of less than half the frequency of a conventional all-ceramic cylinder of the same size. In addition, the modified cylinder offers a larger bandwidth than does any previous conventional design. Beam patterns are typical of free-flooded ring design and are omnidirectional in the horizontal plane, perpendicular to the cylinder axis, and ellipitical in the vertical plane. (Author)

Descriptors :   (*PIEZOELECTRIC TRANSDUCERS, *SONAR EQUIPMENT), UNDERWATER SOUND EQUIPMENT, CYLINDRICAL BODIES, LEAD(METAL), CERAMIC MATERIALS, VERY LOW FREQUENCY

Subject Categories : Electrical and Electronic Equipment
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE