Mechanical design and analysis of the eXTP satellite

Rui Liu; Cheng Zhu; Wen Chen; Tao He; Aimei Zhang; Yupeng Xu; Jinpei Yu; Zhencai Zhu; Shuangnan Zhang; Fangjun Lu

doi:10.1117/12.2562170

13 December 2020 Mechanical design and analysis of the eXTP satellite

Rui Liu, Cheng Zhu, Wen Chen, Tao He, Aimei Zhang, Yupeng Xu, Jinpei Yu, Zhencai Zhu, Shuangnan Zhang, Fangjun Lu

Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 114448F (2020) https://doi.org/10.1117/12.2562170
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The enhanced X-ray Timing and Polarimetry (eXTP) is an international cooperation flagship mission, equipped with four kinds of instruments, including 9 SFA (Spectroscopic Focusing Array) telescopes, 4 PFA (Polarimetry Focusing Array) telescopes, 6 WFM (Wide Field Monitor) cameras, and 40 LAD (Large Area Detector) modules. These payloads overall require about 11.5m² for mounting on the same side of the satellite, with high alignment requirement between lines of sight of each instrument to guarantee the effective area and response performance of scientific payload, which is the most important driver for the satellite mechanical design. At the same time, the mirror assemblies and cameras of SFA and PFA telescopes are installed separately on the satellite, relying on the satellite structure to ensure the relative position accuracy. There are also factors such as payload field-of-view, sun shield, antenna accommodation, mechanical property to be taken care of in the satellite configuration design. According to the characteristics of payloads, an integrated configuration and structure design of eXTP satellite is proposed, with a high-rigid optical module providing large area for payload optics accommodation, a central cylinder as the primary force-taking structure of the satellite, a service module for platform equipment accommodation, and a detector module equipped with cameras of SFA and PFA. This paper introduces the mechanical design and analysis of eXTP satellite. The feasibility and performance of configuration and structure design are verified by simulation analysis.

Citation Download Citation

Rui Liu, Cheng Zhu, Wen Chen, Tao He, Aimei Zhang, Yupeng Xu, Jinpei Yu, Zhencai Zhu, Shuangnan Zhang, and Fangjun Lu "Mechanical design and analysis of the eXTP satellite", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114448F (13 December 2020); https://doi.org/10.1117/12.2562170

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