1. Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas79409-1021United States
2. Institute for Soil Research, University of Natural Resources and Life Sciences, Peter-Jordan-Strasse 82, WienA-1190, Austria
3. U.S. Army Combat Capabilities Development Command Armaments Center, Picatinny Arsenal, New Jersey07806, United States
4. Naval Air Warfare Center Weapons Division, China Lake, California93555, United States