烧蚀磨损理论下多参数变化对火炮内弹道性能的影响分析  

Analysis of Influence of Multiple Parameters on InternalBallistic Performance of Gun Under Ablative Wear Theory

作　　者：蒋俊君 陆欣[1] JIANG Junjun;LU Xin(School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学能源与动力工程学院,江苏南京210094

出　　处：《弹道学报》2021年第4期45-50,共6页Journal of Ballistics

摘　　要：为研究火炮烧蚀磨损对内弹道性能的影响,基于烧蚀磨损理论,建立了经典内弹道模型和火炮烧蚀模型。针对某火炮的试验结果进行了数值模拟,获得的不同磨损量条件下启动压力变化规律与实测结果相吻合。在此基础上,数值分析了多参数变化对火炮内弹道性能的影响。结果表明:身管烧蚀磨损会导致弹丸速度和火炮膛压减小;增大装药量后,随着身管磨损量增大炮口相对初速减退量减小;增大火药力后,随着磨损加剧炮口相对初速减退量增大;全装药条件下,射弹数达到约420发时,炮口初速相比于新炮下降了7.53%,达到身管报废标准,此时身管报废。To study the influence of gun ablative wear on interior ballistic performance,the classical interior ballistic model and gun ablative model were built based on the theory of ablative wear.The numerical simulation on gun was carried out,and the starting pressure variation law under different wear conditions agreed with the experimental results.On this basis,the influence of multi-parameter variation on artillery interior ballistic performance was numerically analyzed.The results show that barrel erosion wear will lead to the decreasement of projectile velocity and the gun pressure.With the increase of charge,the relative muzzle velocity reduction decreases as the barrel wear increases.After increasing the gunpowder power,the relative muzzle velocity reduction increases as the wear increases.Under the condition of full charge,when the number of projectile reaches about 420 rounds,the muzzle velocity drops by 7.53%compared to the new gun,reaching the barrel scrap standard,at which time the barrel is scrapped.

关 键 词：火炮 内弹道 烧蚀磨损 身管寿命 

分 类 号：TJ012.1[兵器科学与技术—兵器发射理论与技术]