某型狙击榴弹发射器的膛口制退器优化设计

The Optimized Design of Muzzle Brake for a Sniper Grenade Launcher

为进一步减小某型狙击榴弹发射器的后坐力,对其膛口制退器开展优化设计。针对膛口制退器的腔室结构参数确定各改进方案并计算了制退效率;根据武器气体动力学理论计算了不同边道孔角度制退器的制退力,将制退力数据添加到虚拟样机仿真模型中并进行了仿真分析,根据武器各部件的运动曲线确定了腔室角度为120°的设计方案为优选方案;对优选方案进行了实弹射击实验,制退效率实验结果与理论计算误差均小于5%,误差在允许范围内;该膛口制退器腔室角度增大到120°可使制退效率从14.7%提高到27.0%,后坐力峰值降低13.6%,后坐冲量减小6.3%.结果表明膛口制退器腔室角度增大到120°可有效提高制退效率,有效减小后坐力。

An optimized design of the smashing device was carried out with the purpose of further reducing the recoil force of a certain type of slamming grenade launcher.According to the chamber structure parameters of muzzle brake,the improvement schemes were determined and the brake efficiency calculated.The repulsive force of the brake with different side hole angles was calculated according to the theory of weapon aerodynamics.The repulsive force data were added to the virtual prototype simulation model with the simulation analysis carried out.The optimized design scheme of the chamber angle 120°was determined in accordance with the motion curve of each component of the weapon.The test results of restraint efficiency show that the error between the test results and the theoretical calculation was less than 5%,which was within the allowable range.The chamber angle of muzzle brake increased to 120°can increase the braking efficiency from 14.7%to 27.0%,decrease the peak recoil force by 13.6%,and decrease the recoil impulse by 6.3%.The results show that the chamber angle of muzzle brake increased to 120°can effectively improve the braking efficiency and reduce recoil force.