Broadband Volume Search Sonar for Towed Mine Hunting Devices
Small Business Information
2820 East College Avenue, State College, PA, 16801
AbstractTRS Technologies, Inc. and Raytheon propose to develop broadband, low voltage sonar projector elements for mine hunting systems using relaxor ferroelectric single crystals. Specifically, we will develop crystal tonpilz elements for the side-scan, volume search sonar array on the AN/AQS-20 towed mine hunting system. These elements will be designed to have crystal drive sections with high aspect ratio by using very stiff carbide head masses thus resulting in coupling coefficient and bandwidth near the theoretical maximum. We will also exploit the very high mechanical strength of zero surface defect crystals to fabricate minimally prestressed transducer elements for improved stability, reduced loss, and reduced weight. The primary goals of the program will be to use crystals to reduce the AN/AQS-20 side scan volume search sonar driving voltage by a factor of 2 and to increase the sonar's bandwidth to > 100%. In the Phase II program TRS and Raytheon will develop a full scale volume search array for the AN/AQS-20. Ultimately single crystal piezoelectrics are expected to enable greatly expanded search ranges, mission times, and mine classification abilities for a broad range of Navy mine hunting systems without increasing and perhaps even decreasing system cost.
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