【摘要】 结合运载火箭、航天飞机及其它二级入轨运载器的分离方式,提出了串联、并联轴对称、并联面对称三种级间分离方式。分析了建立样机所需重要的数学模型和样机系统的层次结构,在此基础上,在虚拟样机平台上实现了级间分离系统虚拟样机的设计,并使用该虚拟样机对可重复使用运载器的级间分离进行了仿真计算,得到了合理的结果。仿真结果表明,串联方式相对距离变化快,达到安全距离耗时短,侧向碰撞几率小;而并联方式相应参数取决于两级间分离力和力矩。因此,完全有必要在物理样机制造、试验前,使用虚拟样机提供必要的理论验证,确保飞行器设计的合理性和飞行的安全性。更多还原

【Abstract】 Based on the separation modes of the launch vehicle,the space shuttle and other Two Stage To Orbit vehicles(TSTO),this paper defines three separation modes: series-wound mode,parallel-plane symmetry mode and parallel-axial symmetry mode.It also analyzes the mathematical models and hierarchical structures,and on this basis a Stage-Separation System(SSS) on Virtual Prototype Model(VPM) is built.The stage-separation of Reusable Launch Vehicle(RLV) is used to validate the SSS,and the simulation result is reasonable.The result shows that,in series-wound mode,the distance between the two stages changes fast,the time of reaching safety distance is short,and the probability of side-collision is little.However,in parallel-plane symmetry mode,the parameters relevant largely depend on the forces and moments between two stages.In conclusion,the rationality and security of the RLV should be validated with the use of VPM,before the physical prototype is produced and tested.更多还原