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Aerodynamic design,analysis,and validation techniques for the Tianwen-1 entry module

Astrodynamics 2022年第1期6卷 39-52页

作者： Qi Li Wei Rao Xiaoli Cheng Haogong Wei Chuang Wang Jie Dong Beijing Space Vehicle Design Department China Academy of Space TechnologyBeijing 100094China China Academy of Aerospace and Aerodynamics Beijing 100074China

The clear differences between the atmosphere of Mars and the Earth coupled with the lack of a domestic research basis were significant challenges for the aerodynamic prediction and verification of *** addition,the Mars entry,descent,and landing(EDL)mission led to specific requirements for the accuracy of the aerodynamic deceleration performance,stability,aerothermal heating,and various complex aerodynamic coupling problems of the entry *** study analyzes the key and difficult aerodynamic and aerothermodynamic problems related to the Mars EDL ***,the study process and results of the design and optimization of the entry module configuration are presented along with the calculations and experiments used to obtain the aerodynamic and aerothermodynamic characteristics in the Martian *** addition,the simulation and verification of the low-frequency free oscillation characteristics under a large separation flow are described,and some special aerodynamic coupling problems such as the aeroelastic buffeting response of the trim tab are ***,the atmospheric parameters and aerodynamic characteristics obtained from the flight data of the Tianwen-1 entry module are compared with the design *** data obtained from the aerodynamic design,analysis,and verification of the Tianwen-1 entry module all meet the engineering *** particular,the flight data results for the atmospheric parameters,trim angles of attack,and trim axial forces are within the envelopes of the prediction deviation zones.

关键词： Mars entry,descent,and landing(EDL) design and optimization of the entry module configuration calculations and experiments of aerodynamic and aerothermodynamic characteristics low-frequency free oscillation under large separation flow special aerodynamic coupling problems flight data

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