1536. Design optimization of coil gun to improve muzzle velocity

Su-Jeong Lee1, Lawrence Kulinsky2, Byungho Park3, Seung Hwan Lee4, Jin Ho Kim5

1, 3, 5Department of Mechanical Engineering, Yeungnam University, Gyeongbuk 712-749, Korea

2Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA, 92697, USA

4Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48105, USA

5Corresponding author

E-mail: 1leesujeong@ynu.ac.kr, 2lawrence.kulinsky@uci.edu, 3bhpark82@ynu.ac.kr, 4iamshlee@umich.edu, 5jinho@ynu.ac.kr

(Received 1 September 2014; received in revised form 4 November 2014; accepted 5 January 2015)

Abstract. Recently, a coil gun was brought to the attention of engineering community as electromagnetic alternative to the chemical launchers. Various studies were performed on coil gun systems focused on achieving the high muzzle velocity in military applications and for satellite launching. Most of these studies focused on improvement of muzzle velocity via increase in the size of the coil gun. Present paper describes the process of design optimization where the size of the coli gun system is restricted. The design of experiment approach utilizes the orthogonal array table that reduces the required number of experiments. The design of experiment is carried out with a commercial PIAnO tool, where the finite element analysis is performed at each experimental point. Then, Kriging model is created to achieve accurate approximation in problems of many design variables or strongly nonlinear model. The coil gun is optimally designed using an evolutionary algorithm (EA) as optimization technique. In order to verify the improvement of muzzle velocity by optimal design, the prototypes of coil gun system are manufactured and the experiments to launch the projectile are performed.

Keywords: coil gun, electromagnetic launcher, finite element analysis, muzzle velocity, optimal design.


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Cite this article

Lee Su‑Jeong, Kulinsky Lawrence, Park Byungho, Lee Seung Hwan, Kim Jin Ho Design optimization of coil gun to improve muzzle velocity. Journal of Vibroengineering, Vol. 17, Issue 2, 2015, p. 554‑561.


JVE International Ltd. Journal of Vibroengineering. Mar 2015, Volume 17, Issue 2. ISSN 1392-8716