1. Department of Mechanical Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
2. Department of Mechanical Engineering, Kyung Hee University, 1732 Deogyoung-daero, Giheung-gu, Yongin-si, Gyeounggi-do 446-701, South Korea
3. NG Next, Northrop Grumman Aerospace Systems, Redondo Beach, California 90278, United States