Simulation and Optimization of Supersonic Drag Characteristics of Blunt Cone Ascender

Authors

Xiazhen Liu, 1. Computer Network Information Center, Chinese Academy of Sciences, Beijing 100190, China;;2. University of Chinese Academy of Sciences, Beijing 100049, China;;
Yuan Wu, 1. Computer Network Information Center, Chinese Academy of Sciences, Beijing 100190, China;;
Li Qi, 3. Institute of Spacecraft System Engineering, Beijing 100094, China;;
Zhao Rui, 4. School of Aerospace Engineering, Beijing institute of technology, Beijing 100081, China;
Zhang Jian, 1. Computer Network Information Center, Chinese Academy of Sciences, Beijing 100190, China;;
Zhonghua Lu, 1. Computer Network Information Center, Chinese Academy of Sciences, Beijing 100190, China;;

Abstract

Abstract: Reducing shock drag is an important objective of the aerodynamic optimization of Mars ascenders. The CFD(Computational Fluid Dynamics) method is used to study the supersonic drag characteristics of a typical blunt cone ascender. Under the design constraints of slenderness ratio of 0.42, 13 groups busbar shape set of zero-lift drag are compared, and the longitudinal static and dynamic stability are discussed. The research results show that, under the design constraints, the blunt shape with large bulbous and a gently sloped conical surface has low drag characteristics. The reason is that, after passing through the bulbous, the supersonic airflow is continuously expanded and depressurized, and are formed a small area of high pressure at the bulbous nose and a large area of low pressure at the cone surface, which reduce the overall drag. Moreover, the shape of blunt cone has higher static stability and critical dynamic stability.

Recommended Citation

Liu, Xiazhen; Wu, Yuan; Qi, Li; Rui, Zhao; Jian, Zhang; and Lu, Zhonghua (2021) "Simulation and Optimization of Supersonic Drag Characteristics of Blunt Cone Ascender," Journal of System Simulation: Vol. 33: Iss. 7, Article 9.
DOI: 10.16182/j.issn1004731x.joss.20-0169
Available at: https://dc-china-simulation.researchcommons.org/journal/vol33/iss7/9

First Page

1582

Revised Date

2020-05-26

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.20-0169

Last Page

1590

CLC

TP391.9

Recommended Citation

Liu Xiazhen, Yuan Wu, Li Qi, Zhao Rui, Zhang Jian, Lu Zhonghua. Simulation and Optimization of Supersonic Drag Characteristics of Blunt Cone Ascender[J]. Journal of System Simulation, 2021, 33(7): 1582-1590.

DOI

10.16182/j.issn1004731x.joss.20-0169