1. Department of Aerospace Engineering, Harbin Institute of Technology, 92 W. Dazhi Street, 359 Mail Box, Heilongjiang, Harbin 150001, China e-mail:
2. Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, 842 W. Taylor Street, Chicago, IL 60607
3. Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, 842 W. Taylor Street, Chicago, IL 60607 e-mail: