考虑弹性的导弹倾斜发射动力学研究  

Study of Oblique-launch Dynamics of Elastic Missile while Leaving Guide Rail

作　　者：王亮[1] 张妍[1] 周晓和[1] 袁天元 南宫自军[1] WANG Liang;ZHANG Yan;ZHOU Xiaohe;YUAN Tianyuan;NANGONG Zijun(China Academy of Launch Vehicle Technology,Beijing 100076,China)

机构地区：[1]中国运载火箭技术研究院

出　　处：《火炮发射与控制学报》2020年第1期13-17,共5页Journal of Gun Launch & Control

基　　金：国防基础科研项目(JCKY2016203B032)

摘　　要：针对导弹离轨安全性问题,研究了考虑弹性响应的导弹倾斜发射过程,以及导弹质量特性和发射角度的影响。提出了导弹倾斜发射动力学模型,其中考虑了离轨时刻导弹弹性变形释放产生的弹性响应和动载荷,以及离轨后低速飞行过程中的气动力,建立了导弹的结构动力学模型。通过算例研究了导弹离轨动力学模型的可行性,获得了导弹质量特性参数和发射角度对动力学和弹性响应的影响。研究发现,导弹离轨前,弹体在重力和前后滑块支撑力作用下发生弹性变形,在离轨时刻弹性释放,产生弹性响应,使得弹体受到动载荷;导弹质量和惯量对刚体运动影响较大,导弹质量和惯量越大,沉浮运动和俯仰运动响应越大,且分别呈现线性和非线性趋势;发射角度越大,导弹的沉浮运动、俯仰运动以及弹性响应越小。The oblique-launch process of the elastic missile as well as the influence of the missile mass characteristics and launching angle was studied to solve the off-orbit safety problem of the missile. Firstly, the oblique-launch dynamics model was put forward, in which the elastic response, dynamic load of missile elastic deformation release at the time of derailment and aerodynamic force during low-speed flight after derailment were considered. Secondly, the dynamic model of the missile was established. At last, the feasibility of the oblique-launch dynamics model was studied through examples, with the effects of the missile mass characteristic parameters and launch angle on the dynamics and elastic response obtained. It is found that the elastic deformation of the missile body occurs under the action of gravity and the support force of the front and rear sliders before the missile is derailed, and the elastic response is released at the time of derailment. The mass and inertia of the missile have a greater impact on the rigid body motion, where the greater the mass and inertia of the missile, the greater the response of the plunging and pitching motion, with the linear and non-linear trends presented respectively. The larger the launch angle is, the smaller of the plunging motion, pitching motion and the elastic response of the missile is.

关 键 词：振动 模态 发射 动载荷 沉浮运动 俯仰运动 

分 类 号：TJ761.1[兵器科学与技术—武器系统与运用工程]