1. Department of Aerospace Engineering, Graduate School of Engineering, Tohoku University 1 , 6-6-01 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
2. Aviation Technology Directorate, Japan Aerospace Exploration Agency 2 , 7-44-1 Jindaiji-Higashimachi, Chofu, Tokyo 182-0012, Japan