Applicable Technologies for Space Demonstration of Solar Power Satellite
- Paper number
IAC-06-C3.2.01
- Author
Dr. Koji Tanaka, Japan Aerospace Exploration Agency (JAXA)/ISAS, Japan
- Coauthor
Prof. Susumu Sasaki, Japan Aerospace Exploration Agency (JAXA)/ISAS, Japan
- Year
2006
- Abstract
In this paper, we present applicable technologies for the Space Power Satellite (SPS) concerning a construction of a large antenna and a high power system in space environment. We have been conducted a conceptual study of SPS and studied the applicable technologies for space demonstration experiments that mainly aims to confirm and establish a wireless power transmission method from a satellite on low earth orbit to rectenna on ground. The satellite consists of a deployable large flat plate antenna ( 10 m × 10 m ∼ 20 m × 20 m ) and a satellite bus. Antenna includes microwave circuits, power generation and distribution system and transmitting antenna elements. For the deployment of the large flat antenna, a lot of folded panels are to be developed in two dimensions and latched to keep the flat shape. The technologies used for the conventional solar panel deployment can be applied to the deployment of the flat board. However, new technologies, such as shape-memory alloys, are desirable in the actuators and the latch mechanism for better reliability and weight reduction. On the other hand, we have studied on the high voltage and high power system of the satellite that interacts with space environments. Increasing with power requirements of the satellite, a solar array is required to generate high voltage in order to reduce a power loss in a cable and a power system. SPS will be operated above several hundred V or several kV. Ambient plasma surrounding the satellite possibly causes electric discharge and current leak. Also, hypervelocity impact of the space debris will cause a satellite serious damages mechanically and electrically. Results of our experiments concerning hypervelocity impact against the thin film materials using a railgun accelerator of ISAS and interaction between high voltage solar array and ambient plasma will be presented.
- Abstract document
- Manuscript document
IAC-06-C3.2.01.pdf (🔒 authorized access only).
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