Real-time Simulation of Terminal Air Defense Interception of Small Caliber Fixed Distance Air-burst Ammunition and Research on the Opening Distance

doi:10.12382/bgxb.2022.0665

Abstract

Abstract:

The simulation of terminal air defense interception and opening distance of small caliber fixed distance air-burst ammunition cannot reflect the dynamic intersection process of bullet clouds and targets after opening, and ignores the actual fuze starting law, which leads to the inaccurate evaluation of damage effectiveness. In this paper, the real-time simulation of terminal air defense interception of small caliber fixed distance air-burst ammunition and its opening distance are studied. A real-time simulation platform for terminal air defense interception of small caliber fixed distance air-burst ammunition is built by establishing a numerical model of multi-beam directional prefabricated fragment warhead, projectile-target intersection and equivalent target (e.g. cruise missile). Based on the real-time simulation platform, the weapon system errors and the measured fuze starting law are introduced, and the relationships between the opening distance and the damage efficiency of projectile at different shooting distances are analyzed. Finally, the development directions of fuze technology of small caliber fixed distance air-burst ammunition are prospected. The results show that the actual fuze starting law makes the reduction in the optimal damage efficiency increase with the increase in the shooting distance. When shooting a long-range target, there is a high miss rate in the opening distance of 0-20m.

Key words: small caliber ammunition, fixed distance air-burst ammunition, terminal air defense interception, fuze starting law, real time simulation, damage effectiveness, opening distance

CLC Number:

TJ01

LOU Wenzhong, HE Bo, FENG Hengzhen, LI Xinzhe, YANG Tingqi, SU Wenting, LÜ Sining, ZHANG Mingrong, YU Xuerui. Real-time Simulation of Terminal Air Defense Interception of Small Caliber Fixed Distance Air-burst Ammunition and Research on the Opening Distance[J]. Acta Armamentarii, 2024, 45(2): 584-593.

Figures/Tables 10

Fig.1 Schematic diagram of terminal air defense interception of small caliber fixed distance air-burst ammunition

Fig.2 Warhead numerical model transformation

Fig.3 Dynamic distribution of bullet cloud after opening

Table 1 C-class damage criteria of cruise missile[7,10]

舱段	等效靶厚度/mm	等效靶材料	击穿子弹数期望/枚	引燃子弹数期望/枚
制导舱	16		≥8
战斗部	21	2A12T4铝合金	≥10	≥1
主油箱	4		≥9
发动机	13		≥12

Fig.4 Structure and function composition of real-time simulation platform

Fig.5 Real time simulation of terminal air defense interception

Fig.6 Simulations of target damage with differentshooting distance under weapon system errors

Table 2 Damage indexes of targrt at different shooting distances under weapon system errors

射击距离/km	P_{C_Max}	d_best/m	P_{C_Mean}	P_{M_Mean}	P_{D_Mean}
1	0.991	7	0.550	0.180	0.029
2	0.767	5	0.341	0.486	0.008
3	0.481	5	0.136	0.712	0.003

Fig.7 Simulations of target damage at differentshooting distances under fuze starting law

Table 3 Damage indexes of target atdifferent shooting distances under fuze starting law

射击距离/km	P_{C_Max}	d_best/m	P_{C_Mean}	P_{M_Mean}	P_{D_Mean}
1	0.989	7	0.548	0.188	0.027
2	0.687	6	0.334	0.491	0.015
3	0.377	5	0.140	0.743	0.012

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