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首页> 外文会议>International astronautical congress >STUDY ON THE MIGRATION OF SLIPRING DEBRIS IN SPACE ENVIRONMENT — AN IN-FLIGHT EXPERIMENT ONBOARD SPACE STATION
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STUDY ON THE MIGRATION OF SLIPRING DEBRIS IN SPACE ENVIRONMENT — AN IN-FLIGHT EXPERIMENT ONBOARD SPACE STATION

机译：空间环境中滑动碎屑的迁移研究—机上空间站飞行实验

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As a crucial component of many spacecraft instruments, slipring is widely used to transfer electrical power or signal between rotary and stationary parts. Typical examples include the power and signal transfer slipring of Solar Array Drive Assembly (SADA) and signal transfer slipring of Control Momentum Gyro (CMG). As slipring rotates, debris is generated as a result of mechanical wear between the brushes and rings of the slipring. The amount of debris increases rapidly as the spacecraft and their onboard instruments equipped with slipring keep functioning. As a result of the exposure to the radiation of space environment and the electromagnetic fields of the electrical circuit of slipring itself, as well as the friction of rotating parts, the debris generated tends to be charged. Under the weightless, vacuum, and electromagnetic environment, these charged debris may migrate and accumulate on the exposed surface inside instrument and trigger the catastrophic malfunctions such as short circuit or arcing. In response to this potential threat, the migration of slipring debris needs to be studied seriously. The space station provides an ideal platform to carry out the experimental studies, because it can provide the necessary long-term weightless, vacuum, radiation, and thermal environment which is hard to simulate on ground. The experiment design, procedure and setup of the in-flight experiment are summarized in this paper.
机译：作为许多航天器仪器的重要组成部分，滑环被广泛用于在旋转部件和固定部件之间传输电能或信号。典型示例包括太阳能电池阵列驱动器组件（SADA）的功率和信号传递滑移以及控制动量陀螺仪（CMG）的信号传递滑移。当滑环旋转时，由于电刷和滑环的环之间的机械磨损而产生碎屑。随着航天器及其配备滑环的机载仪器继续运行，碎片数量迅速增加。由于暴露于空间环境的辐射以及滑环本身的电路的电磁场以及旋转部件的摩擦，导致产生的碎屑趋于带电。在失重，真空和电磁环境下，这些带电的碎屑可能会迁移并积聚在仪器内部的裸露表面上，并引发灾难性故障，例如短路或电弧。为了应对这种潜在威胁，需要认真研究滑屑的迁移。空间站为进行实验研究提供了理想的平台，因为它可以提供必要的长期失重，真空，辐射和热环境，而这些环境很难在地面上模拟。本文总结了机上实验的实验设计，程序和设置。

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