导气与枪管浮动混合式自动机动力学特性研究  

Dynamics Characteristics of Automatic Mechanism for Gas Operated and Floating Barrel Operated Automatic Action

作　　者：宋杰[1] 廖振强[1] 李佳圣[1] 肖俊波[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《兵工学报》2014年第6期753-761,共9页Acta Armamentarii

基　　金：国家自然科学基金项目(51375241)

摘　　要：为了研究导气与枪管浮动混合式自动机在高初速榴弹发射器上应用的可行性及通过调节导气装置结构参数匹配枪管组件与枪机框组件后坐能量达到降低武器系统后坐力的目的,基于气体动力学理论和热力学理论,推导考虑热量散失及枪管浮动作用的内弹道和导气装置气流问题的基本方程组。利用该计算模型对高初速榴弹发射器发射动力学进行仿真,得出武器系统自动机运动特性曲线及后坐力随时间变化的曲线。将仿真结果与实验结果进行对比,验证模型的正确性。探讨导气装置导气孔直径、导气孔开孔位置、导气室初始容积结构参数对导气室气体压力变化的影响规律,并分析其对自动机速度曲线及后坐力的影响。在完成自动机自动循环的前提下,采用导气与枪管浮动混合式自动机可将武器的最大后坐力控制在1 100 N内,实现武器低后坐发射。In order to perform the feasibility study on the application of automatic mechanism for gas and floating barrel operated automatic action in high muzzle velocity grenade launcher（HMVGL） and reduce the recoil of weapon system, the structure parameters of gas operated device is adjusted, and the recoil energies of the barrel and bolt carrier assembly are matched. The basic equations of interior ballistic and flow problems which consider the effects of heat loss and floating barrel are derived based on aerodynam- ics and thermodynamics. The performance characteristics of automatic mechanism and the recoil-time curve are obtained by the calculation and simulation of launch dynamics of HMVGL. The reliability of the model is validated by comparing the simulation and experimental results. The pressure fluctuation of gas chamber is discussed with regard to gasport diameter, gas-port position and initial gas volume. The speed curves of automatic mechanism and the recoil curve are also analyzed. By means of automatic mechanism based on the gas and floating barrel operated automatic action, the maximum recoil of HMVGL can be limited within 1 100 N to achieve a low recoil launching.

关 键 词：兵器科学与技术 自动武器 导气装置 浮动枪管 气体动力学 建模与仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]