"We propose a directional, broadband, highly efficient underwater acoustic transducer using a baffled cylinder made out from piezoelectric single crystals. The prospective application areas will be for an underwater acoustic modem communication andAutonomous Underwater Vehicles (AUV), in which high… More

"This proposal is for the development of a high sensitivity pressure gradient acoustic motion sensor (accelerometer) of the flexural plate type using piezoelectric single crystals. The pressure gradient acoustic motion sensor is based on flexural plateelements operating below resonance in the… More

This project is the development of a single crystal underwater acoustic modem transducer for Unmanned Underwater Vehicles (UUV) which is compact in size, operates at low to moderately low center frequencies, in a broad band frequency range to accommodate state-of-the-art binary, FSK and spread… More

Existing near-field calibration methods for cylindrical MF and HF bow arrays are not easily applied to combatant ships with complex hull forms. The objective of this proposed project is to develop and deliver a cost effective in-situ system for providing sonar transducer acoustic calibration and… More

We propose a compact broadband underwater cylindrical transducer with directional capabilities for acoustic communications (ACOMMS) for unmanned underwater vehicles (UUVs) and gliders. Our proposed solution is to incorporate single crystals and directional capabilities into the acoustic modem… More

We propose a compact broadband underwater cylindrical transducer with integrated power amplifier for multiple applications, including acoustic communications (ACOMMS) for unmanned underwater vehicles (UUVs) and gliders. Such compact, modular devices could be used alone or arranged into various array… More

This proposal is for the design and development of a new low cost directional acoustic sensor technology with integrated acoustic modem capabilities for distributed sensor systems. The study addresses the feasibility to significant improve legacy performance of current A-size directional sonobuoy… More

A single crystal cylindrical ring transducer with multi-resonant broadband operation is described with counter measure and general purpose sonar applications.

We propose the evaluation and measurement of single crystal materials to support performance prediction of cylindrical ring sonar transducers and bar transducers for imaging sonar. The project also encompasses the construction and evaluation of exemplar devices.

We propose the development of a detailed Cylindrical Transducers User Toolkit for the design of underwater acoustic transducers and sonar systems employing cylindrical transducers and relaxor piezoelectric single crystals. The User Toolkit will providing the systems designers with a simple way to… More

BTech Acoustics proposes the development of a detailed Cylindrical Transducers User Toolkit for the design of underwater acoustic transducers and sonar systems employing cylindrical transducers and relaxor piezoelectric single crystals. The Cylindrical Transducer User Toolkit (CT-Toolkit) will allow… More

We propose the development of a compact broadband underwater cylindrical transducers with integrated tuning networks and power amplifiers for Mobile Acoustic Counter Measures. There is a need for cost effective transducers that are broadband and have broad-beam coverage. BTech has designed and built… More

The design and development of piezocrystal sonar transducers is a challenging multidisciplinary and technological effort that spans many fields and skill sets. We look to extend and improve our transducer assembly technologies to reduce cost and implementation time for sonar technology transition… More

We propose the development of a low cost compact low frequency transducer with associated electronics using a novel method.

Experimental evaluation of the electromechanical properties of relaxor piezoelectric single crystals under stress, thermal, electrical bias conditions is proposed through the use of various dynamic and static evaluation methods. The proposed phase I effort concentrates on evaluation of properties… More