The Space Energy Symposium (March 1, 2013. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan
抄録（英）
SSPS can converts solar energy into microwave or laser bean in the geostationary orbit (GEO), and can transmit microwave and laser beam to the earth even in day or night and even in cloudy or rainy day. Therefore this system is expected as a means to solve energy and environment problems in the future. The microwave based SSPS has large reflector for gathering of solar light, solar panel and microwave power transmitter. They are large structure of km size. Now as a first step toward realizing SSPS, we study how to assemble structure of 100m size like reflector and panel for antenna and generator on orbit. The purpose of this study is to propose proper structural model of reflector for SSPS. The author made structural model using triangular pyramid truss for reflector of 100m size. The model is analyzed structural properties (mass, stiffness and breaking strength). This paper shows the relationship between accuracy of mounting the mirror and the focusing performance, between mass of the coupling mechanism and stiffness of the model and between change of the thickness of the member and stiffness of the model. The model of reflector is composed of ten thousand segmented mirrors, main truss structure, and bus equipment. Each mass of mirrors, structure and bus is 1000kg. Each segment mirror is a film mirror of 1m × 1m square. The structural property of the model was analyzed using finite element method (FEM). As a result of this study, the required accuracy for mounting the mirror is plus or minus 0.003 brackets rad brackets (= plus or minus 0.171 brackets deg brackets). The effect of the mass of the coupling mechanism on the stiffness of the model is small compared with the condition of required mass for reflector (=300g/m2). The required mass of the coupling mechanism is a 1.0 approximately 1.5 brackets kg/1 brackets. The effect of change of the thickness of the member on the stiffness of the model is small compared with the condition of required mass for reflector (=300g/m2).
内容記述
形態: カラー図版あり
形態: PDF
内容記述（英）
Physical characteristics: Original contains color illustrations
Physical characteristics: PDF
三角錐トラス構造を用いたSSPS用大型反射鏡の構造モデルの検討
61912017.pdf
(1.06MB)
