航天飞机再入航迹初步设计的一种计算方法

 本文给出一种由航天飞机质心位置和飞行速度随高度的变化值计算再入航迹其它运动参数的方法。用美国“哥伦比亚”号航天飞机轨道器的飞行数据验算表明,该方法不失为一种可供再入航迹初步设计中选用的简便算法。

AN ALGORITHM FOR PRELIMINARY DESIGN OF SPACECRAFT REENTRY TRAJECTORY

This paper presents a method of calculating the flight parameters of spacecraft reentry trajectory. In this method, the variation of spacecraft mass center position and the flight velocity with the altitude is chosen, and then the other flight parameters of reentry trajectory are calculated. Based on the kinetic and dynamic equations of the mass center of spacecraft, the formulae used in the method are derived. Using these formulae, an example of the flight data of the Columbia shuttle is calculated to check the validity of the method . The agreement between the calculated results and the real reentry results is encouraging and shows that the proposed method is an effective and simple one suitable for the preliminary reentry trajectory design.