A RARE-EARTH CRYOGENIC PROJECTOR USING HIGH-TC SUPERCONDUCTORS

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$300,000.00
Award Year:
1990
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
9425
Agency Tracking Number:
9425
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
American Superconductor Corp. (Currently AMERICAN SUPERCONDUCTOR)
149 Grove St, Watertown, MA, 02172
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Carl Russo
(617) 499-2600
Business Contact:
() -
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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