Y. Shoji, H. Fuke, K. Hamada, I. Iijima, C. Ikeda, N. Izutsu, Y. Kakehashi, Y. Matsuzaka, T. Sato, M. Tamura and T. Yoshida Institute for Space and Astronautical Science Japan Aerospace Exploration Agency Sagamihara, Kanagawa, 252-5210, Japan 1 yshoji@mech.eng.osaka-u.ac.jp 2 ...