LONG LIFETIME, SPACEBORNE, CLOSED-CYCLE CRYOCOOLER

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 644
Amount: $494,038.00
Phase: Phase II
Program: SBIR
Awards Year: 1984
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
P.o. Box 2451, Huntsville, AL, 35804
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 John B. Hendricks
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THIS PROJECT INVESTIGATES A CONCEPT FOR A CONTINUOUS REFRIGERATOR FOR OPERATION IN ZERO-GRAVITY WHILE COOLING SENSORS TO A TEMPERATURE DOWN TO 0.3 KELVIN. NO CAPABILITY SUCH AS THIS CURRENTLY EXISTS. THE CONCEPT ASSUMES A SUPERFLUID HELIUM DEWAR (1.5 KELVIN) AS THE HIGH-TEMPERATUREHEAT SINK. A SUPERFLUID HELIUM-4 STAGE, CALLED A "VORTEX" REFRIGERATOR, SERVES AS AN INTERMEDIATE COOLING SYSTEM TO INCREASE THE EFFICIENCY OF THE FINAL HELIUM-3 STAGE. THE DESIGN OF THE DEVICE WILL BE COMPATIBLE WITH EXISTING SUPER FLUID HELIUM SPACE DEWARS TO ALLOW FLIGHT TESTING TO BE DONEAT MINIMUM COST. THE UNIT WILL MEET ALL SHUTTLE SAFETY REQUIREMENTS, HAVE LOW POWER DISSIPATION, AND BE VIBRATION FREE.

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

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