空间弹射分离动力学分析  

Dynamics analysis of the spatial catapult separation problem

作　　者：王志刚[1] 杨雅楠[1] 邓逸凡[1] 

机构地区：[1]西北工业大学航天学院,陕西西安710072

出　　处：《飞行力学》2014年第3期239-242,252,共5页Flight Dynamics

基　　金：国家863计划项目资助(2012AA***2013)

摘　　要：对装有分离滑轨的空间弹射分离进行动力学分析,为分离系统设计和地面试验提供理论支持。针对任意布置弹簧和滑轨位置方向的分离情况进行各分离阶段的受力分析。根据牛顿运动定理、刚体动量定理及动量矩定理,在平动惯性参考系中建立分离过程的12自由度全状态动力学模型。给出不同初始条件下的模型求解算例,通过数值仿真对比验证了模型的准确性和有效性。This paper analyzes the spatial separation dynamics of on-orbit catapult problem equipped witha separate rail, providing the basis for separation of ground testing and separation system design. Underthe premise of separation requirements as well as the arbitrariness of locations of the spring and rail, byusing Newton＇ s theorem, momentum theorem of rigid body, and angular momentum theorem, the dynam-ic model with 12-DOF full states of the separating motion was formulated in translational inertial referenceframe. Examples with different initial conditions are offered, and the solution of numerical simulation ver-ifies the accuracy of the model.

关 键 词：分离动力学 空间弹射 动力学建模 

分 类 号：V411.8[航空宇航科学与技术—航空宇航推进理论与工程]