旋转自稳定末敏子弹运动特性分析  

Motion characteristic analysis of rotary self-stabilizing terminal sensitive submunition

作　　者：杨永亮[1] 刘荣忠[1] 郭锐[1] 陈亮[1] 赵博博[1,2] 邢柏阳 YANG Yongliang;LIU Rongzhong;GUO Rui;CHEN Liang;ZHAO Bobo;XING Boyang(School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;The PLA Unit 73917, Nanjing 210000 , China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]中国人民解放军73917部队,江苏南京210000

出　　处：《国防科技大学学报》2018年第1期145-150,共6页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(11372136)

摘　　要：为研究某型旋转自稳定末敏子弹运动特性,充分考虑末敏子弹的结构强非对称特点和其初始抛撒条件,引入动不平衡弹体模型,推导超大攻角条件下子弹的空间6自由度弹道方程,计算分析子弹的稳态扫描运动特性。结果表明:子弹体的质量分布非对称和初始抛撒角速度是子弹药实现稳态扫描运动的必要条件;子弹扫描频率只由抛撒角速度ω_(σ0)决定,且和ω_(σ0)正相关;初始俯仰角φ_(a0)≥0°时,扫描角整体呈增大趋势,初始俯仰角φ_(a0)<0°时,扫描角整体变化趋势为先减小后增大;扫描面积与配重-全弹质量比、初始俯仰角、初始偏航角和初始角速度呈正相关,与均质圆柱体转动惯量比呈负相关。In order to study the motion characteristics of a certain type of rotary self-stabilizing terminal sensitive submunition,the submunition's asymmetric structure characteristics and its initial projection condition were fully considered.The dynamic unbalance missile model was introduced to derive the6degrees of freedom trajectory equation of the submunition and analyze the characteristics of steady state scanning motion of submunition.Results show that the submunition's asymmetric mass distribution and the initial angular velocity are the necessary condition for the realization of the steady state scanning.The scanning frequency of the submunition is only determined by the projection angular velocityψ°,and is positively correlated with theψ°.When the initial pitch angleψ°≥0°,the overall trend of scanning angle is increased,and whenψ°<0°,the scanning angle decreases and then increases.The scanning area is positively correlated with the mass ratio of weight and projectile,theψ°,the initial yaw angle and theψ°,and is negatively correlated with the ratio moment of inertia of the center cylinder.

关 键 词：末敏子弹 结构强非对称 大攻角 扫描特性 弹道学 

分 类 号：TN95[电子电信—信号与信息处理]