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The Role of Bearing and Scan Mechanism Life Testing in the Flight Qualification of the MODIS Instrument

机译:轴承和扫描机构寿命测试在MODIS仪器飞行鉴定中的作用

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摘要

This paper describes the results of accelerated and operational life tests on bearings for the Moderate Resolution Imaging Spectroradiometer (MODIS). It also describes the post-test analysis of the disassembled bearings. Analysis was performed using micro-Raman, micro-FTIR, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and size exclusion chromatography (SEC). In general, the three sets of bearings in each of three test stations were in very good condition after accumulating 68, 144, and 209 million cycles, respectively. Some of the bearings exhibited lubricant degradation, indicated by viscous lubricant deposits on the cage and raceways.
机译:本文介绍了中分辨率成像光谱仪(MODIS)的轴承加速和使用寿命测试的结果。它还描述了拆卸后轴承的测试后分析。使用显微拉曼光谱,显微FTIR,X射线光电子能谱(XPS),扫描电子显微镜(SEM)和尺寸排阻色谱(SEC)进行分析。通常,在分别累积68、144和2.09亿个循环之后,三个测试站中的每一个中的三组轴承都处于良好状态。一些轴承表现出润滑剂降解,这是由于在保持架和滚道上的粘性润滑剂沉积所致。

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