Abstract
The 4th-made satellite in STARS-project, "STARS-E", which is occupied in development of tethered satellite, has been developed with the aim of the orbital elevator satellite. STARS-E is an ultra-small satellite, that size is roughly 50cm cubic and weight is 50kg class, and it is considered as the mission that about 2km of tether extension and a robot to up and down the tether. Among the various mechanisms that are used in satellite, I attention to the separation mechanism that separate mother-satellite and daughter-satellite. And I proposal and study about design alternatives of retention mechanism that hold 2 satellites of mother-satellite and daughter-satellite, each mass consists of 25kg, and injection(separation) mechanism that able to extension the tether, about 2km, using a compression spring.
