1. Assistant Professor, Dept. of Aerospace Engineering, Amrita University, Amrita Nagar, Coimbatore–641112 (TN), India; formerly, Postdoctoral Fellow, Dept. of Mechanical and Aerospace Engineering, Seoul National Univ., Gwanak-gu, Seoul 151-744, Korea (corresponding author).
2. Pandit Ramachandra Dwivedi Chair Professor, Dept. of Aerospace Engineering, Indian Institute of Technology (IIT), Kanpur–208 016 (UP), India.
3. Professor, Dept. of Aerospace Information Engineering, Konkuk Univ., 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea.