0191-9067/83 $3.00 + .00 Copyright ® 1984 SUNSAT Energy Council REPORT ON SPS SYSTEM SESSION OF THE 2ND ISAS SPACE ENERGY SYMPOSIUM MAKOTO NAGATOMO Institute of Space and Astronautical Science (ISAS) 4-6-1 Komaba Meguro-ku, Tokyo 153, Japan The Institute of Space and Astronautical Science (ISAS), an institute of the Ministry of Education, Science and Culture is responsible for the overall activities from research planning to practice of rockets and satellite development and operation in the field of space science of Japan. ISAS sponsors space related symposia to provide nationwide participants with opportunity of information exchange and project planning. The ISAS Space Energy Symposium is one of the symposia dedicated to a broad research area concerning energy and power in space. The symposium is to be held annually during every fiscal year (April to March). The latest one was the Second ISAS Space Energy Symposium held on December 13 and 14, 1982. It consisted of four sessions: (I) Propulsion Energy, (II) Space Solar Power System, (III) Spacecraft Power System, and (IV) Space Station. Thirteen papers on solar power satellite (SPS) as listed in the following were presented in the session of Space Solar Power System. This report is a brief summary of them. 1. Saburo Adachi and Toru Uno: Basic Design of Antennas for SPS 2. Hirotaka Mori: On the Experimental Microwave Power Transmission System in the Space 3. Nobuhiro Tanatsugu: Space Solar Electric Power Generation System with Stirling Engine 4. Makoto Nagatomo: Introductory Note on the 10 MW SPS Conceptual Study 5. Makoto Nagatomo, Yoshinori Sakai, Yoshio Matsuzaki and Sumio Kato: A Preliminary Concept of Main Structures of the 10 MW SPS 6. Isao Kudo, Itaru Ishii, Yoichi Kimura and Noboru Higuchi: Cryogenic Power Distribution in a Space Power Station 7. Sueo Ohnaka: Microwave Power Device and Power Transmission Antenna for Solar Power Satellite 8. Akio Ushirokawa, Akio Suzuki and Taizo Hirano: Solar Array for SPS 9. Kyoichi Kuriki, Yoshio Sasao and Yoshiro Kondo: Electric Propulsion System for Orbital Transfer 10. Hiromu Tsutsui and Shigeki Kinai: SPS Space Transportation System — Cargo-X 11. Makoto Nagatomo: Test Procedure and Operating Constraints of 10 MW SPS System
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