1. Department of Aerospace Engineering and LANL-CBNU Engineering Institute Korea; Chonbuk National University; Jeonju; Jeollabuk-do; 561-756; Korea
2. The Engineering Institute; Los Alamos National Laboratory; Los Alamos; NM; 87545; USA
3. Airframe Technology Directorate, 7th R&D Institute; Agency for Defense Development; Taejon; 305-600; Korea