HIGH-ACCURACY CRYOGENIC LINEAR ACTUATOR

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$49,797.00
Award Year:
1990
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
13036
Agency Tracking Number:
13036
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
System Specialists Inc (Currently System Specialists Inc.)
3125 E 47th St, Tucson, AZ, 85713
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Wade M Poteet
(602) 622-7513
Business Contact:
() -
Research Institution:
n/a
Abstract
THIS INVESTIGATION WILL BE DIRECTED TOWARDS THE DEVELOPMENT OF A HIGH-ACCURACY CRYOGENIC LINEAR ACTUATOR. ONE OF THE MOST STRAIGHTFORWARD APPROACHES TO THE PROBLEM OF LINEAR MOTION AT CRYOGENIC TEMPERATURES USES A ROTATING STEPPER MOTOR AND LEADSCREW ARRANGEMENT TO ACHIEVE THE DESIRED RESOLUTION AND ACCURACY. TO DATE, THESE EFFORTS HAVE BEEN UNABLE TO PRODUCE HIGH-ACCURACY OVER A REASONABLE LIFETIME, PRIMARILY DUE TO THE BEARING DESIGNS. TO MEET THE REQUIREMENTS OF THIS SOLICITATION TOPIC, THESE BEARINGS MUST BE UNLUBRICATED, LOW WEAR, AND PRODUCE VERY FEW PARTICLES SO THAT A HIGH-VACUUM IS MAINTAINED. A BEARING DESIGN HAS ALREADY BEEN DEVELOPED AND TESTED WHICH SHOWS MUCH PROMISE FOR THE PRESENT APPLICATION. FURTHERMORE, CRYOGENIC STEPPER MOTORS WITH BOTH NORMAL AND SUPERCONDUCTING WINDINGS HAVE BEEN TESTED IN OUR LABORATORY TO TEMPERATURES OF 2.0K WITH SUCCESS. WE PROPOSE AN EFFORT TO DESIGN, FABRICATE A MODEL, AND TEST A CRYOGENIC STEPPER MOTOR/LEADSCREW ASSEMBLY WHICH MEETS OR EXCEEDS THE REQUIREMENTS FOR SPEED, ACCURACY, REPEATABILITY, AND RESOLUTION. ADDITIONALLY, LOW-POWER DESIGNS WILL BE INVESTIGATED TO CONSERVE CRYOGENS IN APPLICATIONS WHERE COOLING IS LIMITED. POSITION AND SPEED READOUTS WILL BE ADDRESSED, AS WELL AS THE VOLUME CONSTRAINTS (<200MM CUBE).

* information listed above is at the time of submission.

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