solar power satellite, gravity-gradient stabilization, spacecraft stability, dynamic stability, resonant frequency, satellite design, moment of inertia, assembling
その他のタイトル（英）
Considerations about the disturbance and the construction way of a space solar power system with gravity-gradient stabilization
Hokkaido University Graduate School of Engineering
Hokkaido University Graduate School of Engineering
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
第23回宇宙エネルギーシンポジウム 平成15年度
雑誌名(英)
The 23rd ISAS Space Energy Symposium March 9, 2004
ページ
89 - 93
発行年
2004-06
抄録（英）
A SPS (Solar Power Satellite) which is a part of the Space Solar System (SSPS) project has been studied at the USEF. Quasi-static analysis had been carried out for the practical SPS. The present purpose is to evaluate the attitude stability of the SPS under construction. During construction, it is assumed that the modules of 100 x 95 sq m are arranged in the shape of line. As the result of quasi-static analysis, it is shown that the roll and yaw angular frequencies of attitude motion are twice and once as large as orbital angular velocity in first step of the construction, respectively. Furthermore, as the result of dynamical analysis, amplitudes of the roll and yaw angles tend to divergence in first step. To avoid such a divergence, another model was proposed which is constructed keeping similar configuration. The construction way is called construction with similarity. From the result of simulations, it is shown that divergences in the roll and yaw angles can be avoided in the construction with similarity. However, the stability around the pitch and yaw axes are weak in first step for construction with similarity. In particular, maximum amplitude around the pitch axis is 5 deg. Therefore, both constructions need active attitude control because there are problems in first step of the constructions.
重力傾斜安定型太陽発電衛星の外乱評価とその組み立てに関する考察
