高空条件下远程弹箭的弹道特性计算分析  

Calculation and Analysis on Ballistic Characteristics of Long-range Shells and Rockets at High Altitude

作　　者：李臣明[1] 

机构地区：[1]中国人民解放军炮兵学院南京分院,南京211132

出　　处：《弹道学报》2007年第1期21-23,54,共4页Journal of Ballistics

摘　　要：为研究高空条件下远程弹箭的弹道特性,基于稀薄气体动力学的分子运动论初步推导了远程火箭在高空稀薄气体中的阻力系数表达式,计算分析了在稀薄气体中阻力系数随马赫数和攻角的变化.提出了远程弹箭的弹道计算中应考虑高空稀薄气体的影响,全弹道阻力系数应兼顾稠密大气与稀薄大气中的阻力系数结合使用.计算结果表明,当攻角与马赫数相同时,阻力系数随着弹道高度的增加而增大,稀薄空气中阻力系数大于稠密空气中阻力系数,采用稠密大气与稀薄大气数据结合使用的阻力系数计算得到的射程小于完全采用稠密大气中阻力系数计算得到的射程.In order to study the ballistic characteristics of long-range shells and rockets at high altitude, the expression of drag coefficients of long-range rocket in rarefied gas was deduced based on rarefied gas dynamics. Aerodynamic characteristics of drag coefficients along with Mach number and angle of attack were analyzed. It was proposed that the influence of rarefied gas should be considered in ballistic calculation of long-range shells and rockets. The calculation of full ballistic drag coefficients should include the drag coefficients in rarefied gas and in dense gas. The results show that with the same angle of yaw and Ma, drag coefficients increase with the height, and values of the drag coefficients in rarefied gas is larger than that in dense gas. The range which is got by using the optimal drag coefficients is less than that by using the drag coefficients of dense gas.

关 键 词：弹道 远程弹箭 稀薄气体动力学 

分 类 号：TJ714[兵器科学与技术—武器系统与运用工程]