气动灭火炮内弹道仿真与发射效率评估

Interior Ballistic Simulation and Launch Efficiency Evaluation of the Fire Monitor Driven by Compressed Air

针对压缩空气驱动灭火弹的发射过程,建立了内弹道仿真计算模型和发射效率评估模型。基于C++平台开发了仿真计算程序,并研究了驱动压力和装填条件对发射初速和发射效率的影响。研究结果表明,模型和程序能够有效模拟压缩空气驱动灭火弹的发射过程。初始气体压力的增大,会导致灭火弹的发射初速也增大,但压缩气体的能量转换效率降低。随着装填位置的增大,灭火弹的发射初速和压缩气体的能量转换效率均小幅度减小。灭火弹的质量仅影响其发射初速,而与压缩气体的能量转换效率无关。研究结果能够为确定压缩空气灭火炮的工作参数提供一定的理论指导。

Both the interior ballistic simulation model and the launch efficiency evaluation model are established to discuss the launching process of the fire monitor driven by compressed air.A simulation program is developed based on the C++platform,and the effects of driving pressure and loading conditions on the muzzle velocity and launch efficiency are studied.Results show that the model and program can effectively simulate the launching process of the fire-extinguishing bomb driven by compressed air.With the increase of initial gas pressure,the muzzle velocity of the fire-extinguishing bomb will also increase,but the energy conversion efficiency of the compressed gas will decrease.With the increase of the loading position,both the muzzle velocity of the fire extinguishing bomb and the energy conversion efficiency of the compressed gas decrease slightly.The mass of the projectile only affects the muzzle velocity and has no direct effect on the energy conversion efficiency of the compressed gas.The research results can provide some theoretical guidance for determining the working parameters of the fire monitor driven by compressed air.