| Autor: |
Alan K. Walden, Allan C. Tims, Thomas R. Howarth, Mark L. Pecoraro |
| Rok vydání: |
1992 |
| Předmět: |
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| Zdroj: |
The Journal of the Acoustical Society of America. 91:2325-2326 |
| ISSN: |
0001-4966 |
| DOI: |
10.1121/1.403522 |
| Popis: |
Two cylindrical, high‐gain, wide‐band (three octaves) passive arrays have been recently developed. Both arrays consist of 36 lead titanate elements mounted on a cylindrical structure. The elements are arranged in a 3×12 configuration with the 12 elements placed along 180° of the cylinder’s circumference. The difference between the design of the two arrays is in the backing of the individual piezoceramic elements. The elements in the first array have a steel tail mass behind them to form an acoustic hard boundary while the elements of the second array have a corprene layer backing to form an acoustic soft boundary. Other differences are that the first array has its elements in an oil‐filled boot and the second array is potted in polyurethane. The presentation shall include conceptual drawings of the configuration of the elements and the arrays. Performance comparisons shall include the measured free field sensitivity, acoustic radiation patterns, and equivalent self‐noise. [Work sponsored by DTRC.] |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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