Improved uncertainty propagation method of dynamic model for Mars entry spacecraft

FU Hui-min; XIAO Qiang; WU Yun-zhang

Chinese

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Improved uncertainty propagation method of dynamic model for Mars entry spacecraft

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- Improved uncertainty propagation method of dynamic model for Mars entry spacecraft
- Improved uncertainty propagation method of dynamic model for Mars entry spacecraft
- 航空动力学报 2014年第5期
- 作者机构：
  
  Research Center of Small Sample Technology, Beijing University of Aeronautics and Astronautics,Beijing,China,100191
- 作者简介：
- 基金信息：
  
  National Basic Research Program of China (2012CB720000)
- DOI：
  中图分类号：
- 纸质出版：2014
- 稿件说明：
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FU Hui-min, XIAO Qiang, WU Yun-zhang. Improved uncertainty propagation method of dynamic model for Mars entry spacecraft[J]. 航空动力学报, 2014,(5).

FU Hui-min, XIAO Qiang, WU Yun-zhang. Improved uncertainty propagation method of dynamic model for Mars entry spacecraft[J]. 2014, (5).
FU Hui-min, XIAO Qiang, WU Yun-zhang. Improved uncertainty propagation method of dynamic model for Mars entry spacecraft[J]. 航空动力学报, 2014,(5). DOI：

FU Hui-min, XIAO Qiang, WU Yun-zhang. Improved uncertainty propagation method of dynamic model for Mars entry spacecraft[J]. 2014, (5). DOI：

摘要

In order to research the uncertainty propagation laws of Mars entry dynamic equations for the Mars entry phase

an improved method was presented for analyzing the effect of the initial state uncertainties and uncertainty factor on the system state in the state trajectories. When applying the method to the entry phase of one of the NASA Mars exploration missions

the simulation results agreed well with the Monte Carlo method

especially the flight path angle simulation at least reaching 92%. It is found that the improved method can not only predict the uncertainty propagation laws with high accuracy of at least 92% in flight path angle simulation and large application scope from -0.1 degree to 0.1 degree

compared with local linearization method

but also save several hours relative to Monte Carlo method.

Abstract

In order to research the uncertainty propagation laws of Mars entry dynamic equations for the Mars entry phase

the simulation results agreed well with the Monte Carlo method

compared with local linearization method

but also save several hours relative to Monte Carlo method.

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