USA flag logo/image

An Official Website of the United States Government

High Current Density in Bi2223 Tape and Low AC Loss Wire

Award Information

Department of Energy
Award ID:
Program Year/Program:
1999 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
64 Jackson Road Devens, MA 01434-
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 1999
Title: High Current Density in Bi2223 Tape and Low AC Loss Wire
Agency: DOE
Contract: N/A
Award Amount: $100,000.00


Not Available A low-cost, lightweight, stealthy broadband acoustic sensor is proposed to achieve surface and subsurface obstacle avoidance (no-compromise) for Advanced Amphibious Assault Vehicles (AAAV). The Marine Collision Avoidance Sonar (MARCAS) is based on a small size, retractable sparse planar array using a minimal number of commercial off-the-shelf transducers. The MARCAS provides both high vertical and high horizontal resolution over a wide aperture to provide AAAVs' drivers with WideViewTM detection without any moving parts. WideViewTM is important because drivers must make navigation decisions not only based on forward obstacles but also on potential obstacles on either side (similar to changing lanes on a highway). Thanks to the high vertical angular resolution and because of shallow water operation, the MARCAS will discern direct-paths from multipaths (reverberation) and differentiate obstacles above and below the 20-foot safety-depth . Finally, the MARCAS is stealthy because it uses GORCA Technologies' proprietary concept, BiopulseTM, which is coded copies of naturally occurring biological transient pulses such as shrimp sounds. The broadband frequency content of these coded pulses drastically limits shallow water propagation interference and allows detection over a range of 400m. This distance represents the safety cushion that gives the AAAV driver approximately 30 seconds to avoid obstacles.

Principal Investigator:

Business Contact:

Small Business Information at Submission:

American Superconductor Corpor
Two Technology Drive Westborough, MA 01581

Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No