Abstract
The authors have installed a tiny rover payload “MINERVA-II” into Hayabusa2 spacecraft which was launched in 2014. The payload consisted of three rovers installed in two containers. Two of them packed together in one container were the responsibilities of the authors. The other one in the secondary container came from the domestic university members. We developed a new rover deployment mechanism ejected from the containers. The rovers and the cover of the container were released by one action. But the cover headed for different direction of the one from rovers, so as to prevent the combination of them. The deployment mechanism was evaluated under the microgravity environment using a drop tower. This paper describes the deployment mechanism as well as the results of the microgravity experiments.