thermal transport system has been conceived and subjected to preliminary ATTACHMENT : evaluation. These evaluations show the concept has potential advantages compared to heat pipes and liquid flow loops in many applications sufficient to warrant its further development. A brief outline of this concept and its performance characteristics is presented, together with the principal and basic area for further R&D needed to validate and optimize system design. Title: Liquid ribbon radiator for lightweight space radiator systems Source: Proceedings of the AFOSR Special Conference on Prime-Power for High Energy Space Systems, Norfolk, Virginia, USA, Feb. 22-25, 1982. (Paper No. X-7) Authors: <Arthur D. Little, Inc., Cambridge, Mass. 02140> Date: 02-22-82 Classification: u Keywords: space energy conversion, alternative systems, novel concepts, materials and coatings, thermal control Abstract: The liquid metal ribbon (CMR) radiator concept described operates by forming a thin (10-100 micrometer) liquid metal meniscus on a wide mesh screen structure which is drawn through space by a retractable pulley system. The liquid metal bath from which the liquid metal ribbon is formed can be a heat ATTACHMENT : dissipation sink for a space borne power system or space thermal control system. Preliminary analysis indicates that radiators formed in this way show promise of achieving weights 1/10 to 1/4 those of conventional space radiators utilizing heat pipe configurations. Film materials which have been combined include gallium, tin, and lithium. These materials cover a wide range of potential heat rejection temperature needs. Important technical issues to be addressed in evaluating the potential for the CMR concept include determining approaches for increasing surface emissivities of the films and maintaining stable, thin, film structures with the pull speeds and materials of interest. Title: Software for comparison and optimization of power systems Source: Proceedings of the AFOSR Special Conference on Prime-Power for High Energy Space Systems, Norfolk, Virginia, USA, Feb. 22-25, 1982. (Paper No. X-8) Authors: Berry, Gregg; (Argonne National Laboratory, Argonne, Illinois? Date: 02-22-82 Classification: u Keywords: structure and design, space energy conversion, sps general Abstract: Interest in examining alternative power system concepts have increased recently. Such analysis has become very involved, regardless of the degree of sophistication employed in modeling the individual component models of the system or the extent of the property data base used. Specification of the ATTACHMENT ; models, interconnecting flow streams, property data, constraints, independent variables and objective function (for optimization problems) can quickly become a formidable task, especially in attempting to conform to the format of any particular systems code. The systems code presented herein bias been designed for the non-expert user by the development of a sophisticated language translator and executive code preprocessor. These two modules also permit great flexibility in allowing the user to specify the system in his own style rather than conforming to a rigid structure determined by a precompiled computer code. The user may also choose
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