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Keywords = TianQin program

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22 pages, 6883 KB  
Article
Structural Design and Analysis of Telescope for Gravitational Wave Detection in TianQin Program
by Yang Song, Jing Ye, Xuyang Li, Qinfang Chen, Desheng Wen, Wenyi Chai, Hao Yuan and Guangwen Jiang
Appl. Sci. 2025, 15(24), 13159; https://doi.org/10.3390/app152413159 - 15 Dec 2025
Viewed by 339
Abstract
Space gravitational wave detection, which could help humanity explore the mysteries of the universe, is a significant objective in the scientific world today, and several different countries and scientific groups have organized programs targeting its realization. The telescope for gravitational wave detection is [...] Read more.
Space gravitational wave detection, which could help humanity explore the mysteries of the universe, is a significant objective in the scientific world today, and several different countries and scientific groups have organized programs targeting its realization. The telescope for gravitational wave detection is a crucial component in the detection satellite, as it is the means of receiving and transmitting the interferometric laser beam; therefore, its structural design is very significant. This paper focuses on the telescope in the TianQin program. First, a structural design scheme is given based on a five-mirror optical system Then, some of the component’s parts are refined to improve its mechanical performance. Finally, a mechanical simulation analysis is performed to verify its reliability and feasibility during the rocket launch. The results reveal that the presented structural design scheme for the telescope is both safe and viable. Full article
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14 pages, 4720 KB  
Article
The Influence of Temperature Disturbance on Space Inertial Sensors
by Jia Hao, Fulong Wei, Xingyu Yan, Jinlong Ma, Zebing Zhou and Xiaobing Luo
Sensors 2024, 24(21), 6934; https://doi.org/10.3390/s24216934 - 29 Oct 2024
Cited by 7 | Viewed by 1398
Abstract
The TianQin program is an independently proposed space-borne detection initiative from China. The inertial sensor, as a crucial component, is susceptible to disturbances from temperature fluctuations, the impact of which on acceleration measurements remains elusive. Therefore, a comprehensive analysis on the influence of [...] Read more.
The TianQin program is an independently proposed space-borne detection initiative from China. The inertial sensor, as a crucial component, is susceptible to disturbances from temperature fluctuations, the impact of which on acceleration measurements remains elusive. Therefore, a comprehensive analysis on the influence of temperature disturbance is necessary to avoid errors in acceleration measurement. In this study, we proposed a complete scheme for calculating the level of acceleration noise. Based on the traditional temperature control scheme of using a heat pipe, we developed a systematic heat transfer simulation model to obtain the temperature signals. These signals can then be converted into the frequency domain and used to calculate the acceleration noise level within the target bandwidth. Our results indicate that, with a temperature control of 0.13 K/Hz1/2@1 mHz, the largest contributions to acceleration noise come from the outgassing effect, radiometer effect, and radiative pressure effect, in descending order. The total noise peak is 3.6×1012 m/(s2Hz1/2) at 1 mHz, which is more than three orders of magnitude higher than the TianQin target of 1015 m/(s2Hz1/2). This study provides new avenues for evaluating measurement errors and solutions for the TianQin program. Full article
(This article belongs to the Section Physical Sensors)
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