Implementing the EHFE-Gebhart model for efficient spacecraft uncertainty thermal analysis

Xiaoyi Fu; Lei Liang; Wenlai Ma; Hutao Cui; Yang Zhao

doi:10.1117/12.3030176

5 June 2024 Implementing the EHFE-Gebhart model for efficient spacecraft uncertainty thermal analysis

Xiaoyi Fu, Lei Liang, Wenlai Ma, Hutao Cui, Yang Zhao

Proceedings Volume 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024); 131632U (2024) https://doi.org/10.1117/12.3030176
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 2024, Xi'an, China

Abstract

The thermal evaluation of spacecraft, particularly when accounting for elements of uncertainty, is fundamentally integral to validating the dependability and resilience of a spacecraft's thermal control system design. Nevertheless, uncertainty thermal analysis predicated on the original model entails a substantial computational burden. Within the context of this research, we advocate for the adoption of the external heat flux expansion-Gebhart (EHFE-Gebhart) algorithm as an alternative to the original model in conducting spacecraft thermal analysis computations. The spacecraft's thermal field is resolved utilizing the EHFE-Gebhart model, enabling the examination of the thermal field's uncertainty information. This investigation encompasses statistical elements such as the mean value, standard deviation, and the probability density distribution. Comparative scrutiny of the uncertainty parameters between the EHFE-Gebhart model and the original model affirms the proposed method's distinctive merits in terms of accuracy and efficiency. Consequently, this approach offers a proficient resolution to the prevailing issue of upholding computational efficacy whilst ensuring the precision of the uncertainty thermal analysis for spacecraft.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiaoyi Fu, Lei Liang, Wenlai Ma, Hutao Cui, and Yang Zhao "Implementing the EHFE-Gebhart model for efficient spacecraft uncertainty thermal analysis", Proc. SPIE 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 131632U (5 June 2024); https://doi.org/10.1117/12.3030176

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KEYWORDS

Space operations

Thermal analysis

Thermal modeling

Solar radiation models

Chemical elements

Ray tracing

Heat flux

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