Research on Prediction Theoretical Model of Projectile Base Pressure during Aftereffect Period

被引：0

作者：

Zhou M. ^{[1
]}

Cao C. ^{[1
]}

Qian L. ^{[2
]}

机构：

[1] School of Automation, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu

[2] School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu

来源：

Binggong Xuebao/Acta Armamentarii | 2019年 / 40卷 / 06期

关键词：

Aftereffect period; Gun; Isentropic flow; Prandtl-Meyer wave; Pressure on the base of projectile;

D O I：

10.3969/j.issn.1000-1093.2019.06.022

中图分类号：

学科分类号：

摘要：

The projectile is disturbed by high-pressure gas during aftereffect period, which affects its exterior ballistic characteristics. The change of pressure on the base of projectile during the aftereffect period is studied for improving the accuracy firing table and optimized design of projectile. As computational fluid dynamics (CFD) simulation takes a long time, a theoretical model based on Prandtl-Meyer wave and isentropic flow is established for predicting the pressure on the base of projectile, and a modified model of pressure boundary estimation is proposed. The muzzle dates measured in a firing practice test were analyzed. The results show that the simulated results of the proposed model and CFD 3D model have less difference, but the calculating time of the proposed model is shorter, which is decreased from about 1.5 h to less than 1 s. © 2019, Editorial Board of Acta Armamentarii. All right reserved.

引用

页码：1304 / 1309

页数：5

共 12 条

[1]

Schmidt E.M., Shear D.D., Optical measurement of muzzle blast, AIAA Journal, 13, 8, pp. 1086-1091, (1975)

[2]

Irwin L., Singer, Peter Y., Et al., Application of high-speed video and spectroscopy to railgun development, Materials and Manufacturing Processes, 27, 8, pp. 846-851, (2012)

[3]

Bryan J., Steward, Glen P., Et al., Modeling midwave infrared muzzle flash spectra from unsuppressed and flash-suppressed large caliber munitions, Infrared Physics and Technology, 55, 4, pp. 246-255, (2012)

[4]

Erdos J.I., Delguidice P., Gas dynamics of muzzle blast, AIAA Journal, 8, 13, pp. 1048-1055, (1975)

[5]

Su X.P., Qian L.F., Dai J.S., Muzzle flow field simulation of gun with a muzzle attachment, Computer Simulation, 26, 9, pp. 15-18, (2009)

[6]

Guo Z.Q., Jiang X.H., Wang Y., Numerical study of propellant gas accelerates projectile during after-effect period, Chinese Journal of High Pressure Physics, 26, 5, pp. 564-570, (2012)

[7]

Wang Y., Guo Z.Q., Jiang X.H., Numerical simulation of propellant gas emptying process in after-effect period, Journal of Gun Launch & Control, 3, pp. 63-67, (2009)

[8]

Li Z.J., Wang H., Chen J.W., The muzzle flow field induced by hyper-velocity projectile, Journal of Harbin Institute of Technology, 49, 10, pp. 53-59, (2017)

[9]

Matsuo S., Tanaka M., Setoguchi T., Et al., Passive control of condensation shock wave in Prandtl-Meyer expansion flow, Journal of Thermal Science, 12, 1, pp. 20-26, (2003)

[10]

Zheng X., Muzzle flow field and its influence on the study of projectile motion, (2010)

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