This issue of the Journal of Applied Mechanics contains 19 scientific papers presented at the 25th International Symposium on Ballistics, 17-21 May 2010, organized at Beijing, China, by the Nanjing University of Science and Technology (NUST) and the China Ordnance Society, under the auspices of the International Ballistics Committee, and in collaboration with the National Defense Industrial Association, USA. Symposium Chairman: Professor Wang Zhongyuan, NUST Symposium Vice Chairman: Professor Zhang Xiaobing, NUST

All papers have been duly peer reviewed and approved according to the established practices and criteria of this Journal.

Guest Editor for this issue was Professor Bo Janzon, SECRAB Security Research and Mälardalen University, Sweden; e-mail: [email protected].

Participating in the creation of this issue were: Publications Committee of the International Ballistics Committee Professor Bo Janzon, Chairman, SECRAB Security Research and Mälardalen University, Sweden Dr. Sidney Chocron, Southwest Research Institute, USA Dr. Marc Giraud, EXOBAL, France Professor Kenneth Kuo, Pennsylvania State University, USA Dr. Meir Mayseless, Israel Military Industries, Israel Dr. Ed Schmidt, Consultant, Army Research Laboratory, Aberdeen Proving Ground, MD, USA Professor Wang Zhongyuan, Nanjing University of Science and Technology This Committee was responsible, among other, for the initial review of abstracts in March 2009.Reviewers Anderson, Charles E., Dr., Southwest Research Institute, San Antonio, TX, USA Backofen, Joseph, BRIGS Co., Herndon, VA, USA Brown, Ronald E., Professor, Naval Postgraduate School, Monterey, CA, USA Carlucci, Donald, Dr., US Army ARDEC, Picatinny Arsenal, NJ, USA Cayzac, Roxan, Dr., Giat Industries, Bourges, France Chocron, Sidney, Dr., Southwest Research Institute, San Antonio, TX, USA Cullis, Ian, Dr., QinetiQ, Fort Halstead, Sevenoaks, Kent, UK Flis, William, Dr., Dyna East Technologies, King of Prussia, PA, USA Galvez, Francisco, Associate Professor, Dr., Polytechnic University of Madrid, Madrid, Spain Giraud, Marc, Dr., Exobal, France Hirsch, Eitan, Dr., Netanya, retired from IMI, Israel Janzon, Bo, Professor, SECRAB Security Research and Mälardalen University, Sweden Kuo, Kenneth, Professor, Pennsylvania State University, USA Mayseless, Meir, Dr., IMI, Israel Riegel, Jack, R3 Technology, Inc., Washington D.C., USA Schmidt, Edward, Dr., Consultant, US ARL, Aberdeen Proving Ground, MD, USA Weinacht, Paul, Dr., US ARL, Aberdeen Proving Ground, MD, USA Zhang, Xiaobing, Professor, NUST, Nanjing, China

The Guest Editor would like to convey his profound thanks to the reviewers, the JAM Editor and Editorial Staff, and all others involved, who have, sacrificing their own time and comfort, performed their important tasks over and beyond the calls of duty! Without the collaboration of this dedicated group of very highly competent ballisticians this issue of the JAM could never have been prepared and published!