High-Power, Low-Frequency, Textured PMN-PT Underwater Projector
Navy SBIR FY2018.1

Sol No.: Navy SBIR FY2018.1
Topic No.: N181-020
Topic Title: High-Power, Low-Frequency, Textured PMN-PT Underwater Projector
Proposal No.: N181-020-0837
Firm: QorTek, Inc.
1965 Lycoming Creek Road
Suite 205
Williamsport, Pennsylvania 17701
Contact: Stephen Dynan
Phone: (570) 322-2700
Web Site: http://www.qortek.com
Abstract: QorTek/USSI?Ts proposal for Navy SBIR Topic N181-020 High Power, Low Frequency Textured PMN-PT Underwater Projector will focus is a new Hybrid Cymbal Transducer (HCT) design functioning in a new large form factor that is form-fit capable of being air-deployed in an A-Size Sonobuoy size. The central objective of the program is to demonstrate the underwater performance of the new optimized HCT design incorporating the latest in advanced textured PMN-PT materials as a direct replacement for traditional PZT builds. In particular, it will be demonstrated at both model and hardware level that HCT design is effective over low frequency range where it provides a minimum improvement of 10dB in SPL acoustic energy output over legacy designs.
Benefits: The Phase I Program will demonstrate a high power, low frequency, underwater projector incorporating developments in advanced textured PMN-PT ceramics. This demonstration will confirm the increased power output of at least 10dB without significant cost increase. This increase in performance will confirm the transducer operation at high stress and field limits while maintaining a compact form factor. The demonstrated improvements in source level and bandwidth will significantly improve the performance in terms of target detection and extended detection ranges. This projector will be capable of generating high acoustic power while exhibiting broad bandwidth (500 ?" 2000 Hz) and can also be capable of integration into an A-sized air-deployable sensor. The results from this Phase I will provide the foundational baseline to enable prototyping of production size optimized Cymbal-based transducer design in the Phase II program. These efforts will provide the confidence and baseline for continued investment and scale-up for the full transition to Naval Systems.