The objective of this research is to enhance the economics of the Space Solar Power System (SSPS) which is to supply a large quantity of energy from space to the ground, and which is expected to become operational in 20–30 years. Weight reduction and improvement of the life span of SSPS are needed to reduce transportation and life cycle costs. Related to the SSPS research that has been conducted by JAXA, the present report suggests a new vision for material development applying the FGMs concept, and proposes some concepts of innovative materials in which the advantages of FGMs are fully utilized.

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