The Effects of Initial State Parameters of Projectiles at Muzzle on Their Ground Dispersion

被引：0
|
作者：
Qian L. [1 ]
Chen G. [2 ]
Wang M. [2 ]
机构：
[1] Northwest Institute of Mechanical and Electrical Engineering, Xianyang, 712099, Shaanxi
[2] School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu
来源：
Binggong Xuebao/Acta Armamentarii | 2020年 / 41卷 / 05期
关键词：
Artillery; Dispersion; Exterior ballistics; Maximum entropy method; Sparse grid numerical integration;
D O I：
10.3969/j.issn.1000-1093.2020.05.001
中图分类号：
学科分类号：
摘要：
The effects of the state parameters of projectiles at muzzle on the dispersion of projectiles are analyzed. Based on the six-degree-of-freedom ballistic equations, the sparse grid numerical integration (SGNI) method is used to obtain the characteristic paramerers of projectiles dispersion considering the error factors of system parameters and the state parameters of projectile at muzzle. The probability distribution of projectiles dispersion is obtained by using the the maximum entropy method. The test examples show that the results obtained by the SGNI method are in good agreement with those obtained by Monte Carlo method, and verify its effectiveness. In addition, an engineering example of 155 mm gun-howitzer is ananlyzed, and the the relation between single state parameter error and multi-state parameter error and the projectiles dispersionis established, which can be provided as reference for the overall design cosidering the dispersion of projectiles. © 2020, Editorial Board of Acta Armamentarii. All right reserved.
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页码：833 / 841
页数：8
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