ATTACHMENT : been verified that the Ni -H cell has much promise as a rechargeable flight battery. 2 Title: Bus voltage determination of large power spacecraft Source: Proceedings of the Second ISAS Space Energy Symposium, Institute of Space & Astronautical Science, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan, Dec. 13-14, 1982. (Paper No. 111-2) Authors: Ohmura, Masatoshi; Mitsubishi Electric Corporation> Date: 12-13-82 Classification: u Keywords: onboard power and distribution, space energy conversion Abstract: For design of large power spacecraft it is very important to optimize the bus-line voltage reflecting less weight, less power loss, less cost and higher reliability and higher safety etc. Weight includes power distribution line and batteries. Loss includes joule dissipation and plasma leak. ATTACHMENT : Reliability and safety both include parts and handling standard. Generally speaking the higher the bus voltage, the less distribution line weight and power loss, but plasma leak loss increases and some restrictions about parts and safety limit the higher voltage. Relating to the weight of batteries, some quantized bus voltage is the best. Considering all of them for 25 - 100 KW power module, it seems that 200 - 300 V DC bus voltage is best. Some comments are given to series/paral1 el conversion power systems which will be suitable for electrical propulsion systems. Title: Chemical conversion and storage of solar energy Source: Proceedings of the Second ISAS Space Energy Symposium, Institute of Space & Astronautical Science, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan, Dec. 13-14, 1982. (Paper No. 111-5) Authors: Tsubomura, Hiroshi; Nakato, Yoshihiro; Tsumura, Akira; CLaboratory for Chemical Converson of Solar Energy, Faculty of Engineering Science, Osaka Uni versi ty> Date: 12-13-82 Classification: u Keywords: alternative systems, novel concepts, onboard power storage and distribution, space energy conversion Abstract: It is proposed that the direct chemical conversion of solar energy may be useful as power generation and storage in space astronautics. An example for such a chemical conversion is given, where specially a surface-modified n-Silicon electrode can efficiently decompose hydrogen iodide ATTACHMENT : into hydrogen and iodine by the solar radiation. This is the most successful system for chemical conversion of solar energy ever reported. Title: Deployable solar array for bus platform Source: Proceedings of the Second ISAS Space Energy Symposium, Institute of Space & Astronautical 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::*
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