Low cost acoustic transmitter

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-13-C-0094
Agency Tracking Number: N11A-026-0250
Amount: $497,160.00
Phase: Phase II
Program: STTR
Awards Year: 2013
Solicitation Year: 2011
Solicitation Topic Code: N11A-T026
Solicitation Number: 2011.A
Small Business Information
Image Acoustics, Inc.
97 Elm Street, Cohasset, MA, -
DUNS: 101163707
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 John Butler
 President/Chief Scientist
 (781) 383-2002
 jbutler@imageacoustics.com
Business Contact
 Nancy Butler
Title: Vice President/Contracts
Phone: (781) 383-2002
Email: nbutler@imageacoustics.com
Research Institution
 University of Rhode Island
 Harold T Vincent
 Ocean Engineering
Sheets Building, Bay Campus
Narragansett, RI, 02882-
 (401) 874-1000
 Nonprofit college or university
Abstract
This STTR Phase II Proposal addresses the need for a low cost acoustic transmitter that combines a power amplifier, control-circuitry and an innovative transducer assembly, all at a low cost. Our approach is to use a cylindrical modal vector projector transducer which becomes part of the housing and, moreover, uses only a minimum of power to provide a sizable source level. The modal vector projector has the versatility of generating omni-directional or dipole patterns as well as directional patterns similar to that of a Tonpilz piston type transducer. The modal transducer concept was originally conceived to reduce the power needs of acoustic modem transducers. In our Phase I final report we present various designs including very low cost as well as modest cost designs with exceptional higher performance comparable with high power tonpilz piston designs. We also introduced a more advanced ring design, the Leveraged Circumferential Acoustic Transducer (LCAT). It is this vector projector design which we propose to use as the basic transducer element of a rear planar keel type array that could be used in the DDG 51 upgrade. Although we will concentrate on this application, we will also consider other possible applications of this vector projector.

* information listed above is at the time of submission.

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