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Usage of pre-flight data in short rendezvous mission of Soyuz-TMA spacecrafts

机译：飞行时间数据在联盟号TMA航天器的短暂会合任务中的使用

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The paper describes the reduction of the vehicle autonomous flight duration before docking to the ISS. The Russian Soyuz-TMA spacecraft dock to the ISS two days after launch. Due to the limited volume inside Soyuz-TMA the reduction of time until docking to the ISS is very important, since the long stay of the cosmonauts in the limited volume adds to the strain of the space flight. In the previous papers of the authors it was shown that the existing capabilities of Soyuz-TMA, the ISS and the ground control loop make it possible to transfer to the five-orbit rendezvous profile. However, the analysis of the cosmonauts' schedule on the launch day shows that its duration is at the allowable limit and that is why it is necessary to find a way to further reduce the flight duration of Soyuz-TMA before docking to less than five orbits. In a traditional rendezvous profile, the calculation of rendezvous burns begins only after determination of the actual vehicle insertion orbit. The paper describes an approach in which the first two rendezvous burns are performed as soon as the spacecraft reaches the reference orbit and the values of the burns are calculated prior to the launch based on the pre-flight data for the nominal insertion. This approach decreases the duration of the rendezvous by one orbit. The demonstration flight of a Progress vehicle using the proposed profile was implemented on August 1, 2012 and completely confirmed the correctness of the imbedded principles. The paper considers the possible improvements of the proposed approach and recovery from the contingencies.
机译：本文介绍了在停靠到ISS之前减少车辆自主飞行时间的问题。俄罗斯Soyuz-TMA航天器在发射两天后便停靠在国际空间站。由于Soyuz-TMA内部的空间有限，缩短到对接国际空间站的时间非常重要，因为宇航员在有限空间内长时间停留会增加太空飞行的压力。在作者的前几篇论文中，已经证明了Soyuz-TMA，ISS和地面控制回路的现有功能使其有可能转移到五轨道交会剖面。然而，对宇航员在发射日的时间表的分析表明，其持续时间在允许的限度内，这就是为什么有必要在对接至少于五个轨道之前找到进一步减少联盟号-TMA飞行时间的方法的原因。 。在传统的交会轮廓中，交会燃烧的计算仅在确定实际的车辆插入轨道之后才开始。本文介绍了一种方法，其中，一旦航天器到达参考轨道，就会进行前两次会合点灼伤，并在发射前根据名义插入的飞行前数据计算灼伤值。这种方法将集合点的持续时间缩短了一个轨道。 2012年8月1日实施了使用拟议轮廓的Progress车辆的演示飞行，并完全证实了嵌入原理的正确性。本文考虑了所提出方法的可能改进以及从突发事件中恢复的可能性。

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