Tethered Solar Power Satellite for the Near-term Demonstration Experiment

Computer Science

Scientific paper

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Scientific paper

Tethered Solar Power Satellite (Tethered-SPS) consisting of a large panel with a capability of power generation/ transmission and a bus system which are connected by multi-wires has been proposed as an innovative solar power satellite. The Tethered-SPS concept is highly robust and potentially low cost, with special features in the integration, construction, attitude control, heat management, and evolutional development strategy. Towards the practical Tethered-SPS of GW level in the future, a demonstration experiment in the near future has been investigated. The basic plan is to place a miniature tethered SPS in the low earth orbit to demonstrate the microwave power transmission to the ground. The demonstrator has a 16 m x 17.6 m panel consisting of 400 power generation/transmission modules and an end mass, which are connected with a truss and tether wires. The attitude is stabilized by the gravity-gradient force so as that the transmitting antennas in the lower plane of the panel are always directed to the ground. The experiment will be able to demonstrate the microwave power transmission more than 100 kW from the orbit to the rectenna on the ground.

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