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MDS (Mission Demonstration test Satellite)




MDS-1
A 450-kg satellite designed to evaluate on-orbit performance of a variety of technologies, including testing the radiation resistance of some commercial semiconductor devices and new solar cells, and the effectiveness in space of a new type of battery, solid-state data recorder, and parallel computer system. MDS-1 was launched by NASDA (National Space Development Agency) using an H-2A launch vehicle on February 4, 2002. It is now operating from a highly elliptical orbit that flies it through the Van Allen radiation belts.


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   • JAPANESE SPACECRAFT
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