HIGH CAPACITY HEAT PIPE RADIATOR

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 17055
Amount: $49,809.00
Phase: Phase I
Program: SBIR
Awards Year: 1991
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Creare Inc
Po Box 71, Hanover, NH, 03755
DUNS: 072021041
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE HEAT REJECTION REQUIREMENTS OF FUTURE SPACE SYSTEMS ARE PROJECTED TO INCREASE BY AN ORDER OF MAGNITUDE OVER THE COMMING DECADES, TO MEET THE NEEDS OF MANNED PLANETARY MISSIONS AND BASES. THE SPACE STATION FREEDOM ALONE WILL REQUIRE 75 KW OF HEAT REJECTION AT ASSEMBLY COMPLETE (AC) AND THREE TO FOUR TIMES THAT CAPACITY IN THE GROWTH PHASE. THE SPACE CONSTRUCTABLE RADIATORS (SCRS) REPRESENT THE MAJOR WEIGHT COMPONENT IN THE THERMAL-MANAGEMENT SYSTEM, CONTRIBUTING ABOUT 40 KG/KW OF HEAT-REJECTION CAPACITY. THE SCRS ALSO REPRESENT THE LARGEST COMPONENTS, WITH A STOWED VOLUME OF 0.16 M (3)/KW. USING PRESENT TECHNOLOGY, THE GROWTH PHASE OF THE SPACE STATION FREEDOM WILL REQUIRE TRANSPORTATION TO SPACE OF 4,000 TO 9,000 KILOGRAMS OF RADIATOR PANELS AT A COST OF ABOUT $40 TO $90 MILLION. THIS PROJECT ADDRESSES THE DEVELOPMENT OF A NOVEL HIGH-CAPACITY, HEAT-PIPE RADIATOR THAT HAS THE POTENTIAL TO REDUCE THE RADIATOR WEIGHT BY A FACTOR OF 6 AND THE STOWED VOLUME BY A FACTOR OF 10. THE PROPOSED RADIATOR WOULD HAVE A SPECIFIC MASS OF ABOUT 0.7 KG/M(2), WHICH TRANSLATES TO ABOUT 6 KG/KW FOR HEAT REJECTION AT ROOM TEMPERATURE IN NEAR-EARTH ORBIT. THE RADIATOR HEAT PIPE IS ALSO INHERENTLY RESISTANT TO DEPRIMING, AND ITS EVAPORATOR WOULD HAVE A SIGNIFICANTLY HIGHER HEAT-FLUX CAPABILITY THAN PRESENT DESIGNS. IN PHASE I, THE FEASIBILITY OF THE CONCEPT WILL BE DEMONSTRATED BY DESIGNING THE KEY ELEMENTS OF THE RADIATOR AND PERFORMING SOME PROOF-OF-CONCEPT TESTS. THE HEAT REJECTION REQUIREMENTS OF FUTURE SPACE SYSTEMS ARE PROJECTED TO INCREASE BY AN ORDER OF MAGNITUDE OVER THE COMMING DECADES, TO MEET THE NEEDS OF MANNED PLANETARY MISSIONS AND BASES. THE SPACE STATION FREEDOM ALONE WILL REQUIRE 75 KW OF HEAT REJECTION AT ASSEMBLY COMPLETE (AC) AND THREE TO FOUR TIMES THAT CAPACITY IN THE GROWTH PHASE. THE SPACE CONSTRUCTABLE RADIATORS (SCRS) REPRESENT THE MAJOR WEIGHT COMPONENT IN THE THERMAL-MANAGEMENT SYSTEM, CONTRIBUTING ABOUT 40 KG/KW OF HEAT-REJECTION CAPACITY. THE SCRS ALSO REPRESENT THE LARGEST COMPONENTS, WITH A STOWED VOLUME OF 0.16 M (3)/KW. USING PRESENT TECHNOLOGY, THE GROWTH PHASE OF THE SPACE STATION FREEDOM WILL REQUIRE TRANSPORTATION TO SPACE OF 4,000 TO 9,000 KILOGRAMS OF RADIATOR PANELS AT A COST OF ABOUT $40 TO $90 MILLION. THIS PROJECT ADDRESSES THE DEVELOPMENT OF A NOVEL HIGH-CAPACITY, HEAT-PIPE RADIATOR THAT HAS THE POTENTIAL TO REDUCE THE RADIATOR WEIGHT BY A FACTOR OF 6 AND THE STOWED VOLUME BY A FACTOR OF 10. THE PROPOSED RADIATOR WOULD HAVE A SPECIFIC MASS OF ABOUT 0.7 KG/M(2), WHICH TRANSLATES TO ABOUT 6 KG/KW FOR HEAT REJECTION AT ROOM TEMPERATURE IN NEAR-EARTH ORBIT. THE RADIATOR HEAT PIPE IS ALSO INHERENTLY RESISTANT TO DEPRIMING, AND ITS EVAPORATOR WOULD HAVE A SIGNIFICANTLY HIGHER HEAT-FLUX CAPABILITY THAN PRESENT DESIGNS. IN PHASE I, THE FEASIBILITY OF THE CONCEPT WILL BE DEMONSTRATED BY DESIGNING THE KEY ELEMENTS OF THE RADIATOR AND PERFORMING SOME PROOF-OF-CONCEPT TESTS.

* information listed above is at the time of submission.

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