Corrected Internal Ballistic Simulation of High Chamber Pressure Gun

2018 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

材料科学;无线电电子学;计算机科学

Ma, Yan^1 ; Nan, Fengqiang^1 ; He, Weidong^1

School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu

210094, China^1

关键词: Ballistic performance;    Calculation programs;    Different pressures;    Initial velocities;    Internal ballistic;    Pressure and temperature;    Specific heat ratio;    Theoretical calculations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/439/3/032023/pdf
DOI  :  10.1088/1757-899X/439/3/032023

来源: IOP

【 摘 要 】

In view of the high initial velocity and chamber pressure of the high chamber pressure gun, the equation of state of gunpowder gas which is closer to the actual situation is adopted. Then considering the influence of the air resistance at the front of the projectile, the change of the combustion speed parameter in different pressure sections, both the specific heat ratio of the gunpowder gas and the constant volume specific heat change with the pressure and temperature, and the effect of erosive burning, the traditional classical internal ballistic model is modified. And the corresponding physical and mathematical models are established, the analogous calculation programs are compiled, the theoretical calculations and experimental results are compared. The results show that compared with the traditional classical internal ballistic model simulation, the simulation results of the modified ballistic performance of the high chamber pressure gun are more consistent with the experimental results.