航天器工程2023，Vol.32Issue(6)：31-38,8.DOI:10.3969/j.issn.1673-8748.2023.06.005
引力波探测中的超低频热噪声传递特性分析
Transmission Characteristics of Ultra-low Frequency Thermal Noise in Gravitational Wave Detection
亢佳贺 1陈华 1赵锐 2杨昌鹏 3赵欣 3宋云飞 3程文龙1
作者信息
- 1. 中国科学技术大学 热科学和能源工程系,合肥 230027
- 2. 合肥工业大学 汽车与交通工程学院,合肥 230009
- 3. 北京空间飞行器总体设计部 航天器热控全国重点实验室,北京 100094
- 折叠
摘要
Abstract
In this paper,a low-frequency temperature noise transmission model based on tempera-ture amplitude spectral density has been established,and the accuracy of the model is verified by experiments.The model can be used to study the influence of the spectral characteristics of heat source and the thickness of thermal control materials on the temperature noise transmission under low frequency heat flow condition.The research results show that the temperature noise gradually decreases and eventually remains basically unchanged with the increase of noise frequency,indica-ting that under the material conditions provided in this paper,the passive thermal control material is suitable for temperature noise suppression above 0.17 Hz,and the active thermal control meth-od is necessary for temperature noise suppression below 0.17 Hz.With the increase of the thick-ness of the passive thermal control material,the logarithm of the temperature noise decreases lin-early.For the ultra-low frequency temperature noise,thicker thermal control material is needed.In order to save space resources,the ultra-low frequency temperature noise is more suitable for active thermal control method to suppress.关键词
引力波探测/温度噪声/被动热控/频谱特性Key words
gravitational wave detection/temperature noise/passive thermal control/spectral char-acteristics分类
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亢佳贺,陈华,赵锐,杨昌鹏,赵欣,宋云飞,程文龙..引力波探测中的超低频热噪声传递特性分析[J].航天器工程,2023,32(6):31-38,8.
