Experimental study of the air-knife thermal control system for a large-aperture primary mirror
文献类型：会议论文
| 作者 | Tan, Yufeng1,2; Wang, Jihong1,2; Ren, Ge1,2; Xie, Zongliang1,2; Ren, Xiaoli1,2,3; Dong, Li1,2,3 |
| 出版日期 | 2019 |
| 会议日期 | November 26, 2018 - November 28, 2018 |
| 会议地点 | Hefei, China |
| 关键词 | scaling experiment lightweighted mirror image quality thermal control |
| 卷号 | 11068 |
| DOI | 10.1117/12.2524490 |
| 页码 | 110681E |
| 英文摘要 | The thermal induced effect errors including the surface distortion of heated mirror and micro-thermal turbulence fluctuation at the optical surface dramatically degrade the image quality of the telescope. To address the problem, we have proposed an air-knife system consisting of an annular flushing subsystem and a central sucking subsystem and reported its simulation analysis. This paper presents the detailed experimental performance of the air-knife thermal control system. The scaling experiment is conducted in a thermo-cycling experiment room with different environmental conditions, where the temperature fluctuations and wavefront perturbation of the scaling mirror can be accurately measured. It is shown from the experimental results that the approximately laminar forced air flow at the optical surface does blow away the turbulence fluctuation and not induce novel low order wavefront aberrations. Meanwhile, the air knife system contributes to the stability of the thermal boundary layer and enhances the convective heat exchange between mirror and air around. As a result, the air-knife system significantly decreases the surface-to-air temperature difference and improves the image quality with a thermal response. Furthermore, it is found that thermal control efficiency is less significant with the increase of the air intake flow or the decrease of the surface-to-air temperature difference. The scaling experiment results demonstrate the practicability of the air-knife thermal control system for large-aperture primary mirror. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only. |
| 会议录 | Proceedings of SPIE 11068 - Second Symposium on Novel Technology of X-Ray Imaging
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| 会议录出版者 | SPIE |
| 文献子类 | 会议论文 |
| 语种 | 英语 |
| ISSN号 | 0277-786X |
| WOS研究方向 | Engineering, Electrical & Electronic ; Optics ; Imaging Science & Photographic Technology |
| WOS记录号 | WOS:000473327700049 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/9629]  |
| 专题 | 光电技术研究所_光电工程总体研究室（一室） |
| 作者单位 | 1.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China; 2.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu; 610209, China; 3.University of Chinese Academy of Sciences, Beijing; 100039, China |
| 推荐引用方式 GB/T 7714 | Tan, Yufeng,Wang, Jihong,Ren, Ge,et al. Experimental study of the air-knife thermal control system for a large-aperture primary mirror[C]. 见:. Hefei, China. November 26, 2018 - November 28, 2018. |
入库方式： OAI收割
来源：光电技术研究所
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