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Low Frequency Projector for Long Range Acoustic Communications

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-11-M-0254
Agency Tracking Number: N111-066-0888
Amount: $79,916.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N111-066
Solicitation Number: 2011.1
Solicitation Year: 2011
Award Year: 2011
Award Start Date (Proposal Award Date): 2011-05-09
Award End Date (Contract End Date): N/A
Small Business Information
2500 N. Loop Drive
Ames, IA -
United States
DUNS: 798683355
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Julie Slaughter
 Research Engineer
 (515) 296-8030
Business Contact
 Jon Snodgrass
Title: Exec. VP and Chief Scient
Phone: (515) 296-8030
Research Institution

Etrema proposes to develop a free-flooded Galfenol split-ring transducer that will provide 50-75 Hz of bandwidth on a 200 Hz carrier wave capable of operating at depths up to 1000 m with a source level greater than 190 dB re 1uPa @ 1m. While there are no specifications on size, the desire expressed by the technical point of contact is for a source that will fit on a standard pallet. By combining the depth-independence and bandwidth of a free-flooded magnetostrictive ring with the compact size of a split-ring, the resulting transducer should meet the objectives for the communications application. Design options which decrease size and improve performance will be explored.

* Information listed above is at the time of submission. *

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