A RARE-EARTH CRYOGENIC PROJECTOR USING HIGH-TC SUPERCONDUCTORS

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 9425
Amount: $300,000.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1990
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
149 Grove St, Watertown, MA, 02172
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Carl Russo
 (617) 499-2600
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A RARE-EARTH, MAGNETOSTRICTIVE, MATERIAL, TB(X)DY(1-X) (0.50.6), OPERATING AT CRYOGENIC TEMPERATURES, CAN STORE AND RELEASE TWENTY TIMES THE ENERGY OF PIEZOELECTRIC MATERIALS, AND FIVE TIMES THE ENERGY OF THE BEST ROOM-TEMPERATURE, MAGNETOSTRICTIVE, RARE-EARTH ALLOYS. THIS MAKES IT IDEAL FOR THE CONSTRUCTION OF LOW-FREQUENCY, HIGH-POWER, UNDERWATER, ACOUSTIC PROJECTORS. BROAD-BAND, LOW-Q, PROJECTOR APPLICATIONS ARE LIMITED BY THE AC ELECTRICAL DRIVE AND THE DC BIAS FIELDS. THE LOW LOSSES INHERENT IN HIGH-T(C) SUPERCONDUCTORS CAN SIGNIFICANTLY REDUCE THE POWER REQUIREMENTS AND INCREASE OVERALL EFFICIENCY. IN THIS SBIR WE PLAN TO: 1. DEMONSTRATE A RARE EARTH TB(X)DY(1-X) TRANSDUCER DRIVEN BY A SUPERCONDUCTING COIL AND OPERATED AT LIQUID NITROGEN TEMPERATURES. 2. MEASURE PERFORMANCE WITH A SUPERCONDUCTING COIL AND A COMPARISON COPPER COIL. 3. DETERMINE IF A SUPERCONDUCTING-COIL TRANSDUCTION DEVICE CAN BE DESIGNED FOR USE OPERATING BELOW 500 HZ WITH ACOUSTIC POWER OUTPUT EXCEEDING 4 KW AND WITH AT LEAST 70% EFFICIENCY. 4. EXTRAPOLATE ELECTRICAL EFFICIENCY FOR THE CASE OF AN ARRAY-LOADED, TRANSDUCER OPERATED AT RESONANCE BASED ON THE DATA DERIVED FROM THE EXPERIMENTS. 5. DERIVE RESISTIVE INDUCTIVE AND MAGNETOSTRICTIVE "D" CONSTANT VALUES FROM THE MEASUREMENTS.

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

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