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arXiv 0907.4184gr-qc
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飞越异常之谜

The Puzzle of the Flyby Anomaly

Slava G. Turyshev, Viktor T. Toth

摘要:

近距离行星飞越经常被用作将航天器置于极端太阳系轨道上的一种技术,否则需要更大的助推器,或者在仅仅依靠化学推进时甚至可能不可行。对飞越的理论描述,称为重力辅助,已经很好地建立起来。然而,似乎缺乏对这些动态事件发生期间的物理过程的理解。从一些经历地球重力辅助的航天器收到的无线电测量跟踪数据表明,在飞越期间发生了意想不到的能量变化,无法用现代天体动力学的标准方法解释。几个航天器的这种令人费解的行为被称为飞越异常。我们总结了最近的异常观测结果,并讨论了解决这个难题的可能途径。

英文摘要:

Close planetary flybys are frequently employed as a technique to place spacecraft on extreme solar system trajectories that would otherwise require much larger booster vehicles or may not even be feasible when relying solely on chemical propulsion. The theoretical description of the flybys, referred to as gravity assists, is well established. However, there seems to be a lack of understanding of the physical processes occurring during these dynamical events. Radio-metric tracking data received from a number of spacecraft that experienced an Earth gravity assist indicate the presence of an unexpected energy change that happened during the flyby and cannot be explained by the standard methods of modern astrodynamics. This puzzling behavior of several spacecraft has become known as the flyby anomaly. We present the summary of the recent anomalous observations and discuss possible ways to resolve this puzzle.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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