His education:2013-Present: Assistant Professor, Department of Mechanical Engineering, Iowa State University, 2011-2013: Adjunct Assistant Professor , Department of Aerospace Engineering, Iowa State University, 2008-2009: Research Engineer, Sukra Helitek, Ames, IA, 2002-2004: Postdoctoral Research Associate, Department of Mechanical Engineering, Michigan State University and 1996-1997: Lecturer, School of Aeronautics, Beijing University of Aero. & Astro., China