低后坐力武器喷管推力特性研究  

Study on Thrust Characteristics for Nozzle of Low Recoil Weapon

作　　者：郭保全[1,2] 黄通 丁宁 武宪威[1,2] 栾成龙 GUO Baoquan;HUANG Tong;DING Ning;WU Xianwei;LUAN Chenglong(School of Mechatronics Engineering,North University of China,Taiyuan 030051,China;Research Institute of Collaborative Innovation of Military-Civilian Integration,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学机电工程学院,太原030051 [2]中北大学军民融合协同创新研究院,太原030051

出　　处：《弹箭与制导学报》2019年第5期158-162,共5页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金(51275489);山西省自然科学基金(201701D121082)资助。

摘　　要：为探究低后坐力武器喷管对后坐力的作用效力,建立了低后坐力武器喷管仿真模型,利用ANSYS FLUENT对不同燃气压力作用下的喷管流场进行数值模拟,获得了喷管型面阻力特性和推力特性,根据推力特性仿真结果探究了喷管结构参数对推力特性的影响。研究表明:低后坐力武器喷管在火药燃气开始作用瞬间推力急剧增大;在燃气作用初期由于膛内压力较大,火药燃气在喷管尾部形成低压区产生负推力;在燃气作用中后期,喷管推力呈现幅值较小的平稳变化。In order to explore the effect of the nozzle of low recoil weapon on the recoil force, a simulation model of the nozzle of low-recoil weapon was established. ANSYS FLUENT was used to conduct numerical simulation of the flow field of the nozzle under different gas pressure to obtain the resistance characteristics and thrust characteristics of the nozzle profile. According to the simulation results of thrust characteristics, the influence of nozzle structure parameters on the thrust characteristics was explored. The results show that the thrust of low recoil weapon nozzle increases sharply at the beginning of gunpowder gas. In the early stage of gas action, due to the high pressure in the chamber, gunpowder gas forms a low pressure area at the nozzle tail and generates negative thrust. In the middle and late stage of gas action, the thrust amplitude of nozzle presents a small steady change.

关 键 词：低后坐力武器 喷管 气动特性 结构优化 

分 类 号：TJ71[兵器科学与技术—武器系统与运用工程]