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SMALL SIZED SLIP-RING CAPSULE ENDURANCE TESTING

机译:小尺寸滑环胶囊耐久性测试

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摘要

Slip-ring capsules are mechanical units used to carry electrical signals or power currents through a rotating joint. They are used either in solar array drive mechanisms (SADM) or in scientific instruments like radiometers. Analyses of the latest missions show that the slip-rings requirements are more and more demanding. For example, the number of in-orbit mechanical cycles keeps increasing. As a result, a signal slip-ring technology, which had been successfully tested for a given need, now has to improve its performances. It was therefore interesting to try to reach the slip-rings technical limits by testing them beyond the required performance of already known space missions. Slip-rings units are currently used in mechanisms such as SADM for the CNES Proteus and Myriade satellite family. They can be also found in the payload instruments of the Megha-Tropiques satellite project, namely Madras and Scarab. A selected hardware was tested at the mechanism endurance laboratory of the CNES, in Toulouse. The typical in-orbit rotation speed was increased in order to limit the test duration to 2 years. The main interest of this work was to provide a continuous slip-ring performance status and a large set of engineering data. The main test results are presented and discussed. The following lines also report a part of the hardware detailed inspection and the lessons learned.
机译:滑环胶囊是机械单元,用于通过旋转接头传递电信号或动力电流。它们可用于太阳能电池阵列驱动机构(SADM)或辐射计等科学仪器中。对最新任务的分析表明,对滑环的要求越来越高。例如,在轨机械循环的数量不断增加。结果,已经针对给定需求成功测试了信号滑环技术,现在必须提高其性能。因此,通过对滑环进行测试以超出已知的太空飞行任务所需的性能来达到滑环技术极限是很有趣的。滑环单元目前用于诸如CNES Proteus和Myriade卫星系列的SADM之类的机制中。它们还可以在Megha-Tropiques卫星项目的有效载荷仪器中找到,即Madras和Scarab。选定的硬件在图卢兹的CNES的机械耐久性实验室进行了测试。为了将测试持续时间限制为2年,提高了典型的在轨旋转速度。这项工作的主要目的是提供连续的滑环性能状态和大量的工程数据。给出并讨论了主要的测试结果。以下各行还报告了部分硬件详细检查和经验教训。

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