Avoidance of Twinline Towed Array Entanglement

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00024-06-C-4114
Agency Tracking Number: N043-210-0125
Amount: $749,817.00
Phase: Phase II
Program: SBIR
Awards Year: 2006
Solicitation Year: 2004
Solicitation Topic Code: N04-210
Solicitation Number: 2004.3
Small Business Information
5885 Trinity Parkway, Suite 230, Centreville, VA, 20120
DUNS: 135121148
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Walter Allensworth
 Sr. V.P.
 (301) 840-9722
Business Contact
 Llew Wood
Title: President
Phone: (703) 968-8040
Email: lwood@adaptivemethods.com
Research Institution
The Program Executive Office of the Littoral and Mine Warfare Systems, Maritime Surveillance Systems Program Office (PMS 485) operates SURTASS T-AGOS ships with TwinLine acoustic surveillance arrays in the Western Pacific where they encounter areas of intense fishing activity. The TwinLine array system consists of two acoustic streamers that are towed by a heavy tow cable and separated by mine-sweeping paravanes on short tethers that pull out and down. The system is susceptible to entanglement by fishing gear which upsets the paravanes and causes collapse of the tow system. This results in a significant degradation in acoustic performance, often damages the tow system, and reduced operational availability. In Phase I, Adaptive Methods (formerly AHA Res., Inc.) developed and tow-tested a prototype TwinLine Separation And Roll Control (SARC) device that replace the paravanes. By design, the SARC is much less likely to become entangled in fishing equipment, and even if entangled it is designed to continue to function, thereby increasing operational availability and minimizing damage to TwinLine towed arrays. In Phase II, Adaptive methods will develop, instrument, and test an EDM and First Article SARC tow body, and develop documentation for its use aboard T-AGOS SWATH tow ships.

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

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