抄録
Results are reported in this paper of an experimental and analytical study to obtain data for the design of a sampling system. The sampling system is a candidate to be employed in the "HAYABUSA Mk II" mission, which is an advanced program of the asteroid sampling probe expected to be launched on 2014 by ISAS/JAXA. The sampling system to be employed in "HAYABUSA Mk II", or "Marco Polo Mission" is requested to get sample of the surface of asteroid without destroying the order of layer. As a new sampling technique, "Harpoon & Penetrator" method by the tethered sampler is planned instead of "Touch and Go" method in the next sample return project of small celestial body exploration. The present paper introduces some experimental results employed with a variety of materials for the sampling specimen and with the shape of the corer and the velocity of ejection as parameters of the study. Results of experiment give fundamental insights into the characteristics of penetration and the return buck of asteroid samples with preserving the order of layer as requested in the mission.
