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分析了利用空间系绳系统返回载荷到地面目标点的过程中,由于展开过程中有可能的误差导致着陆点的偏差。首先给出了从系绳展开、自由摆动、切断系绳后进入低轨道,最终进入大气层到落到地面整个过程模型和计算过程;通过载荷整个运动过程中的数据给出星下点轨迹,并给出在没有任何误差情况下,使载荷着陆到目标点上所需要的开始释放系绳的轨道位置;在以上结果的基础上,最后给出当轨道高度、轨道偏心率或者剪断系绳的时机出现一定误差的情况下,载荷返回到地面的偏差范围。
In the process of using the space tether system to return the load to the ground target point, the landing point deviation due to the possible error in the deployment process is analyzed. Firstly, the whole process model and calculation process of unfolding from the tether, swinging freely, entering the low orbit after the tether is cut off, finally entering the atmosphere and falling to the ground are given. The trajectory under the star is given by the data during the whole movement of the load Based on the above results, the trajectory height, orbit eccentricity and the timing of cutting off the tether are given. Finally, the trajectory position of the tether to be released from landing load to the target point without any error is given. In the event of a certain error, the load returns to the ground deviation range.