飞船在大气层外飞行段的初始参数对轨道的影响

本文主要分析了载人飞船在大气层外飞行时的各主要参数对飞船轨迹和轨道终点影响的敏感度。在分析过程中。首先建立了飞船在大气层外飞行的数学模型,进而通过大量的数值仿真得到一条基准轨道,在此基础上分别改变轨道起始点参数(倾角、偏航角和飞行速度)的初始值,分析轨道的变化情况及轨道的终点误差。最后根据起始点参数值和对应的轨道终点误差值的关系,得到了飞船在大气层外飞行时的起始参数对飞行轨道及轨道终点影响的敏感度,从而为工程上轨道的设计提供一个有效的参考依据。

The Influence of Spaceship's Initial Parameters on Orbit in the Phase of Extra-atmospheric Flight

The influence of main different parameters on spaceship's trajectory and the destination of orbit was mainly analyzed when the manned spacecraft flied in extra- atmosphere, which is called sensitivity. In the process of analysis, firstly, the mathematical models of extra-atmospheric flight were established, furthermore, the datum orbit was gotten according to a number of numerical simulation, the initial parameter value of orbit's starting point (IPVOSP) (path angle, yawangle and the velocity of flight) were varied, which is based on the datum orbit. The changing condition and the error of destination of orbit (EDO) were analyzed. Finally, the results were obtained according to the relation between IPVOSP and EDO, which will offer effective reference basis to the design of orbit in engineering.