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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。
Lift-type reentry means that when the spacecraft enters the atmosphere, it will produce some controllable lift force, which is of great significance to improve the accuracy of landing point. In order to study the kinetic characteristics of lift-off reentry, the orbiter simulator’s application program interface is used to simulate the lift-off process of the spacecraft returning from low orbit on the basis of its flight dynamics model. Through the simulation test, the variation regularities of heat flow, overload, dynamic pressure and other parameters are analyzed, and the dynamics characteristics of lift-reentry are found out. The parameters of lift-reentry and ballistic reentry simulation are compared and analyzed. The results show that lift-type reentry can solve the problem of high overload and high heat flux.