短钝锥上升器的超声速阻力特性仿真和优化

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

系统仿真学报 ›› 2021, Vol. 33 ›› Issue (7): 1582-1590.doi: 10.16182/j.issn1004731x.joss.20-0169

短钝锥上升器的超声速阻力特性仿真和优化

刘夏真^1,2, 袁武¹, 李齐³, 赵瑞⁴, 张鉴¹, 陆忠华¹

1.中国科学院计算机网络信息中心,北京 100190;
2.中国科学院大学,北京 100049;
3.北京空间飞行器总体设计部,北京 100094;
4.北京理工大学宇航学院,北京 100081

收稿日期:2020-04-09 修回日期:2020-05-26 出版日期:2021-07-18 发布日期:2021-07-20
作者简介:刘夏真(1986-),男,博士生,工程师,研究方向为计算流体力学,高性能计算。E-mail：liuxz@sccas.cn
基金资助:
国家重点研发计划(2019YFB1704202); 国家自然科学基金(11871454,11902025,61702438); 中国科学院战略性先导科技专项(XDB22020102,XDC01040100); 中国科学院信息化专项(XXH13506-204)

Simulation and Optimization of Supersonic Drag Characteristics of Blunt Cone Ascender

Liu Xiazhen^1,2, Yuan Wu¹, Li Qi³, Zhao Rui⁴, Zhang Jian¹, Lu Zhonghua¹

1. Computer Network Information Center, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Institute of Spacecraft System Engineering, Beijing 100094, China;
4. School of Aerospace Engineering, Beijing institute of technology, Beijing 100081, China

Received:2020-04-09 Revised:2020-05-26 Online:2021-07-18 Published:2021-07-20

摘要/Abstract

摘要： 降低激波阻力是火星上升器气动优化的重要目标。采用计算流体力学(Computational Fluid Dynamics, CFD)方法,针对典型短钝锥上升器外形的超声速阻力特性开展研究,在长细比0.42的设计约束下,比较了13组母线外形的零升阻力,并讨论了纵向静、动稳定性。研究表明：在设计约束下,球鼻大且锥面平缓的钝头形状有低阻特性,原因是超声速气流在经过球鼻后连续膨胀减压,形成了球鼻处小范围的高压区和锥面处大范围的低压区,使整体阻力下降;短钝锥外形有较高静稳定性和呈现临界动稳定性。

关键词: 上升器, 短钝锥, 阻力, 稳定性, 计算流体力学

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.

Key words: Mars Ascent Vehicle (MAV), blunt cone, aerodynamic drag, aerodynamic stability, Computational Fluid Dynamics (CFD)

中图分类号:

TP391.9

刘夏真, 袁武, 李齐, 赵瑞, 张鉴, 陆忠华. 短钝锥上升器的超声速阻力特性仿真和优化[J]. 系统仿真学报, 2021, 33(7): 1582-1590.

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.

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短钝锥上升器的超声速阻力特性仿真和优化

Simulation and Optimization of Supersonic Drag Characteristics of Blunt Cone Ascender

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