推力变化对旋转导弹动稳定性的影响分析  

Impact of Thrust Variation on Dynamic Stability of Spinning Missiles

作　　者：鄢雄伟 杜波 李绍隆 张璐华 李克勇 YAN Xiongwei;DU Bo;LI Shaolong;ZHANG Luhua;LI Keyong(Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109;Equipment Project Research Center,Naval Research Institute of PLA,Beijing 100071)

机构地区：[1]上海机电工程研究所,上海201109 [2]海装装备项目管理中心,北京100071

出　　处：《空天防御》2021年第4期57-60,共4页Air & Space Defense

摘　　要：在旋转导弹的飞行过程中,发动机推力变化会对弹体响应特性产生显著的影响,使得弹体稳定性降低,甚至导致弹体出现不收敛的锥形运动。针对该问题,建立了考虑推力变化的旋转导弹交叉耦合动力学模型,分析了推力变化导致弹体动稳定性降低的作用机理,并给出了推力变化率的设计稳定边界条件。通过数值仿真,验证了所提出方法的正确性。在设计稳定边界内,推力由大到小的快速变化导致弹体的动稳定性降低,一旦超出设计边界将导致弹体出现锥形运动形式的发散。In the flight of spinning missile, the change of engine thrust has a significant impact on the response characteristics of the missile, which will reduce the stability of the missile and lead to the non-convergent conical motion of the missile. To solve this problem, a cross-coupling dynamic model of spinning missile considering thrust variation is established, the mechanism of dynamic stability reduction caused by thrust variation is analyzed, and the design stability boundary conditions of thrust change rate are given. Numerical simulation verifies the correctness of the proposed method. Within the designed boundary of stability, the rapid change of thrust from large to small will lead to the reduction of the dynamic stability of the missile, and once it exceeds the design boundary, the missile will diverge in the form of conical motion.

关 键 词：旋转导弹 稳定性 交叉耦合 推力变化 

分 类 号：TJ761.1[兵器科学与技术—武器系统与运用工程]