摘要
影响制退器性能的灵敏因子主要有侧孔倾角、侧孔面积和中央弹孔面积等,其中侧孔倾角大小影响灵敏度最大,其次为侧孔面积,最后为中央弹孔面积。通过理论计算得到制退器效率最大时,侧孔倾角、侧孔面积和中央弹孔面积参数,即炮口制退器最优化模型。建立制退器的二维仿真模型,应用计算流体力学软件对制退器各侧孔出口的气流速度分布、动压分布以及对侧孔挡板和2m×2m的边界区域进行了仿真计算,结果分析表明,改进制退器比原制退器具有更高的制退效率和更低炮口冲击波超压值,即改进制退器的性能更优,具有较高的实用价值。
The main sensitive factors th angle, side hole area and central bullet at have the influence on muzzle brake performance include side ho hole area and so on. The maximum impact sensitivity is side ho e e angle, followed by is side hole area and the final is central bullet hole area. The muzzle brake efficiency for optimal structural parameters was obtained, it was the improved model by use of theoretical calculation with changed side hole angle, side hole area and central bullet hole area. By establishment of two-dimensional simulation model of muzzle brake, software of CFD was used to carry out the simulation and re- sults analysis for distribution of airflow velocity and dynamic pressure on each side hole exit and side hole baffle and the 2 m × 2 m boundary region of muzzle brake. Results indicated that the improved muzzle brake has the higher braking efficiency and the lower muzzle blast overpressure than that of the original muzzle brake, and the characteristics of improved muzzle brake are more superior and it has the higher practical value.
出处
《火炮发射与控制学报》
北大核心
2013年第4期82-85,共4页
Journal of Gun Launch & Control
