Tianwen-1 Mars entry vehicle trajectory and atmosphere reconstruction preliminary analysis

IF 2.7 1区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Astrodynamics Pub Date : 2022-01-04 DOI:10.1007/s42064-021-0116-y

Haogong Wei, Wei Rao, Guangqiang Chen, Guidong Wang, Xin Zou, Qi Li, Yanqi Hu

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引用次数: 3

Abstract

The Tianwen-1 Mars entry vehicle successfully landed on the surface of Mars in southern Utopia Planitia on May 15, 2021, at 7:18 (UTC+8). To acquire valuable Martian flight data, a scientific instrumentation package consisting of a flush air data system and a multilayer temperature-sensing system was installed aboard the entry vehicle. A combined approach was applied in the entry, descent, and landing trajectory reconstruction using all available data obtained by the inertial measurement unit and the flush air data system. An aerodynamic database covering the entire flight regime was generated using computational fluid dynamics methods to assist in the reconstruction process. A preliminary analysis of the trajectory reconstruction result, along with the atmosphere reconstruction and aerodynamic performance, was conducted. The results show that the trajectory agrees closely with the nominal trajectory and the wind-relative attitude. Suspected wind occurred at the end of the trajectory.

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“天文一号”火星进入飞行器轨道和大气重建初步分析

2021年5月15日7点18分(UTC+8)，“天文一号”火星进入飞行器成功降落在乌托邦平原南部的火星表面。为了获取有价值的火星飞行数据，在进入飞行器上安装了一个由冲洗空气数据系统和多层温度传感系统组成的科学仪器包。利用惯性测量单元和同步空气数据系统获得的所有可用数据，采用组合方法重建进入、下降和着陆轨迹。利用计算流体动力学方法生成了一个涵盖整个飞行状态的空气动力学数据库，以协助重建过程。对弹道重建结果以及大气重建和气动性能进行了初步分析。结果表明，该轨迹与标称轨迹和风相对姿态基本一致。疑似风出现在飞行轨迹的末端。

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来源期刊

Astrodynamics Engineering-Aerospace Engineering

CiteScore

6.90

自引率

34.40%

发文量

期刊介绍： Astrodynamics is a peer-reviewed international journal that is co-published by Tsinghua University Press and Springer. The high-quality peer-reviewed articles of original research, comprehensive review, mission accomplishments, and technical comments in all fields of astrodynamics will be given priorities for publication. In addition, related research in astronomy and astrophysics that takes advantages of the analytical and computational methods of astrodynamics is also welcome. Astrodynamics would like to invite all of the astrodynamics specialists to submit their research articles to this new journal. Currently, the scope of the journal includes, but is not limited to:Fundamental orbital dynamicsSpacecraft trajectory optimization and space mission designOrbit determination and prediction, autonomous orbital navigationSpacecraft attitude determination, control, and dynamicsGuidance and control of spacecraft and space robotsSpacecraft constellation design and formation flyingModelling, analysis, and optimization of innovative space systemsNovel concepts for space engineering and interdisciplinary applicationsThe effort of the Editorial Board will be ensuring the journal to publish novel researches that advance the field, and will provide authors with a productive, fair, and timely review experience. It is our sincere hope that all researchers in the field of astrodynamics will eagerly access this journal, Astrodynamics, as either authors or readers, making it an illustrious journal that will shape our future space explorations and discoveries.