空天飞机最优轨迹／推进性能研究

基于Ｓａｎｇｅｒ的气动外形，推进系统模型，质量模型等，采用飞行力学，最优控制理论及其数值计算等方法，研究了二级入轨水平起飞载机最小起飞质量的上升轨迹，得到了给定任务需求条件下吸气式组合发动机总体性能要求。合理分析了载机最优上升轨迹，任务需求对吸气式组合发动机总体性能的要求。得到了一些明确而重要的结论。

The Optimal Design of Trajectory/Propulsion Performance for Aerospace Plane

Flight dynamics and control, vehicle design, optimization and its nume rical method are employed to optimize the ascent trajectories and airbreathing propulsion system performance of two-stage-to-orbit (TSTO) launch vehicles with horizontal takeoff (HTO). Based on a great deal of numerical results, the paper analysised the optimal trajectories and the performance of airbreathing propulsion system, and revealed the inherent relations between the ascent trajectories and the airbreathing propulsion performance of the first stage vehicle. Some important conclusions are obtained.