Effect of eccentric initiation on the flight characteristics and ballistic dispersion of EFP

Liu Jian-feng; Long Yuan; Ji Chong; Zhao Chang-xiao; Jiang Nan

doi:10.11883/1001-1455-(2015)03-0335-08

Volume 35 Issue 3

Jun. 2015

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Liu Jian-feng, Long Yuan, Ji Chong, Zhao Chang-xiao, Jiang Nan. Effect of eccentric initiation on the flight characteristics and ballistic dispersion of EFP[J]. Explosion And Shock Waves, 2015, 35(3): 335-342. doi: 10.11883/1001-1455-(2015)03-0335-08

Citation:

Liu Jian-feng, Long Yuan, Ji Chong, Zhao Chang-xiao, Jiang Nan. Effect of eccentric initiation on the flight characteristics and ballistic dispersion of EFP[J]. Explosion And Shock Waves, 2015, 35(3): 335-342. doi: 10.11883/1001-1455-(2015)03-0335-08

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Effect of eccentric initiation on the flight characteristics and ballistic dispersion of EFP

doi: 10.11883/1001-1455-(2015)03-0335-08

Liu Jian-feng^{1, 2
,},
Long Yuan^{1, 2},
Ji Chong^{1, 2},
Zhao Chang-xiao³,
Jiang Nan¹

1.
College of Filed Engineering, PLA University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
State key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
3.
Wuhan Ordnance NCO Academy of PLA, Wuhan 430075, Hubei, China

Received Date: 2013-10-29
Rev Recd Date: 2014-05-20
Publish Date: 2015-05-25

Abstract

Abstract

Flight trajectory experiments were conducted with⌀60 mm diameter EFP warhead in order to investigate the effect of eccentric initiation on the flight characteristics of EFP.The results indicate that the projectile flight stability with perforations nearly circular in the net target when eccentricity is less than 2 mm.The accuracy of strike is lower and terminal effects are less harmful because the projectile overturns during the flight, with the eccentric value of 4 mm.The forming of EFP and its flight characteristics with different eccentricity was numerically analyzed by using LS-DYNA and CFX.EFP is asymmetrical under the conditions of the eccentric initiation.It changes the symmetry of the flow field which leads to instability during flight.The research results provide a reference to detonation parameter of EFP warhead.
- mechanics of explosion,
- asymmetrical,
- aerodynamic,
- exterior trajectory,
- eccentric initiation,
- projectile with stabilizing fins

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References(12)

References

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