Space & Astronautica! Science, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan, Dec, 13-14, 1982. (Paper No. IV-6) Authors: Saito, Haruo; Kinase, Takeo; Ishii, Toyohiko; Yamamoto, Kazuo; Ogata, Yoshiteru; (Mitsubishi Electric Corporation> Keywords: solar cells, space energy conversion, -fabrication technology Abstract: One o-f the characteristics of bus plat-form is the availability of a large amount o-f power. So, it requires large deployable solar arrays generating several tens o-f KW o-f electric power. To develop these arrays, it is essential to identify the critical technologies and problem areas. Therefore, we ATTACHMENT : investigated the storage method, blanket/mast configuration, drive mechanism, power transfer assembly and wiring. As a result, we have a prospect of developing solar array generating more than 25 KW by adopting flexible type arrays and extension mast. Title: Power requirements for manned space stations Source: Proceedings of the AFOSR Special Conference on Prime-Power for High Energy Space Systems, Norfolk, Virginia, USA< Feb. 22-25, 1982. (Paper No. 1-4) Authors: Woodcock, Gordon R.; Silverman, Sidney; (The Boeing Co.) Keywords: onboard power storage and distribution, solar cells, space energy convers ion Abstract: Manned space stations now in preliminary design will exhibit power needs from 25 to 150 kW. Studies have examined solar ce11/battery, solar cell/ regenerative fuel cell, and nuclear systems. This paper will summarize the power requirements, the tradeoff between batteries and regenerative fuel cells, ATTACHMENT : including how the electric power system can be integrated with other functions, and nuclear concepts. The influence of mission applications on selection of the power system will be discussed, including LEO and high Earth orbit civil missions and potential military missions. Title: Applications of materials surface modification to prime 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. VI1-10) Authors: Milder, F. L.; (Spire Corporation, Bedford, MA 01730) Keywords: materials and coatings, structure and design, solar cells Abstract: Perhaps the single most pervasive design consideration in engineering for space applications, including prime power, is weight. Not only is the question of weight dealt with directly, but it is also couched in such terms as cost effectiveness or efficiency. Often basic component functions can be ATTACHMENT : thought of as twofold. Bulk material requirements are usually items like lightweight strength, structural integrity, dimensional stability or high temperature strength. Surface requirements more often deal with wear, erosion and corrosion resistance, electrochemical activity or electrical properities such as conductivity or emissivity. For these reasons, the new technologies of surface modification are ideally suited for space applications. Surface modification offers the ability of custom creating materials with one set of surface properties conjoined to a dissimilar or even mutually exclusive set of bulk properties. The benefit of such specifically engineered materials is an efficiency in component design which translates to weight minimization. Modern surface modification techniques, including ion implantation, sputter deposition, and plasma/ion deposition, deal with thin film layers in the range from a few nanometers to a few micrometers. Ion implantation is unique in that it forcibly injects an element of choice into the near surface region of a material. Thus, alloys or solid solutions are formed unaccompanied by dimensional changes. The numerous and varied deposition techniques, on the other hand, grow coating layers, often with unique properties. The developmental areas related to space prime power which will be amenable to surface modification include wearing components such as turbine blades, bearings and MHD walls, fuel cell and battery electrodes, superconductors, spark gap switches, transformer cores, storage capacitors and thin film solar cells. Title: Interaction between the SPS Solar Power Satellite solar array and the magnetoshperic plasma Source: Proceedings of the AFOSR Special Conference on Prime-Power for High Energy Space Systems, Norfolk, Virginia, USA, Feb. 22-25, 1982. (Paper No. VI-13) Authors: Freeman, John W.; (Dept, of Space Physics and Astronomy, Rice University, Houston, TX 77251) Keywords: solar cells, environmental effects, prototype systems,
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