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Thermal-Control-Material-Impact Effect by Micron Space Debris

机译：微米空间碎片对热控制材料的影响

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摘要

The thermal-control material of spacecraft is easily impacted by micrometeoroid and space debris in orbit. Optical solar reflector is a kind of silvered glass second-surface mirrors, which are applied as spacecraft outer-surface material to reflect sunlight. A system for launching flyer using a Q-switched Nd:YAG laser with a flattop-appearance beam has been developed for simulating space-debris-impact effects on optical solar reflector. The velocities of the flyer were obtained by laser no-contact velocity-measurement apparatus based on the principle of laser light curtain, which could measure impact velocity unto 10 km/s with a high accuracy of 95%. By launching three kinds of flyer diameter and five kinds of flyer thickness, 56 impact tests have been conducted in flyer velocity ranging from 3.15 to 8.77 km/s. The results had shown that the splashed-zone diameter of the impacted sample increased obviously, as impact velocity was improved at the same flyer diameter and flyer thickness. The surface thermal-radiation-property degradation was obviously as the change of flyer velocity, flyer thickness, and flyer diameter.
机译：航天器的热控制材料很容易受到轨道上微流星体和空间碎片的影响。光学太阳反射镜是一种镀银玻璃第二面镜，用作航天器的外表面材料以反射阳光。已经开发了一种使用带有平顶外观光束的Q开关Nd：YAG激光器发射传单的系统，用于模拟空间碎片对光学太阳反射镜的影响。飞行器的速度是通过基于激光幕原理的激光无接触速度测量仪获得的，可以以10％/ s的速度测量撞击速度，准确度高达95％。通过发射三种飞行器直径和五种飞行器厚度，已经进行了56次冲击试验，飞行器速度为3.15至8.77 km / s。结果表明，在相同的飞轮直径和飞轮厚度下，随着冲击速度的提高，冲击试样的飞溅区直径明显增加。表面热辐射性能的下降明显是随着飞轮速度，飞轮厚度和飞轮直径的变化。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2016年第6期|1185-1188|共4页
  • 作者

    Yang Jiyun; Ma Ziliang; Feng Weiquan;

  • 作者单位

    Beijing Inst Spacecraft Environm Engn, Beijing 100094, Peoples R China|Space Environm Dept, 104 Youyi Rd,POB 5142-39, Beijing, Peoples R China;

    Beijing Inst Spacecraft Environm Engn, Beijing 100094, Peoples R China|Space Environm Dept, 104 Youyi Rd,POB 5142-39, Beijing, Peoples R China;

    Sci & Technol Reliabil & Environm Engn Lab, Beijing 100094, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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