基于Orbiter的航天器升力式再入特性仿真

升力式再入是指航天器进入大气层时产生一定可控升力,对提高落点精度具有重要意义。为了研究升力式再入的动力学特性,采用Orbiter模拟器的应用程序接口,在其飞行动力学模型基础上,对航天器从低轨道升力式再入返回过程进行仿真。通过仿真试验,分析热流、过载、动压等参数的变化规律,初步摸清了升力式再入的动力学特性,并对升力式再入和弹道式再入仿真结果参数进行了比较和分析,结果表明升力式再入能很好解决过载和热流峰值高的问题。

The Simulation of Lifting Reentry Dynamic Properties Based on Orbiter Simulator

Lifting reentry means that the spacecraft generates controllable lift during reentry,which is significant for improving the accuracy of landing point.Based on the flight dynamic model of Orbiter 2010 space flight simulator and its API(Application Programming Interface),a case study of lifting reentry of space shuttle is presented to analyze the heat flow,overload and dynamic pressure.The results show that the simulation based on Orbiter is feasible and convenient.The dynamic property of lifting reentry from low earth orbit is preliminarily obtained.Finally,the simulation parameters of ballistic reentry and lifting reentry are compared and analyzed,and the outcome shows that lifting reentry can perfectly solve the high value problem of heat flow and overload.