类X-43A飞行器高超声速分离仿真

doi:10.7527/S1000-6893.2021.25171

流体力学与飞行力学

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类X-43A飞行器高超声速分离仿真

赵飞¹, 刘丽玲², 石泳¹, 左光¹, 万千¹, 张宇佳¹

1. 中国空间技术研究院钱学森空间技术实验室, 北京 100094;
2. 中国矿业大学(北京)机电与信息工程学院, 北京 100083

收稿日期:2020-12-28 修回日期:2021-01-12 发布日期:2021-02-02
通讯作者: 刘丽玲 E-mail:liuliling15@126.com
基金资助:
国家自然科学基金（11802015，41806209）

Hypersonic separation simulation of aerocraft similar to X-43A

ZHAO Fei¹, LIU Liling², SHI Yong¹, ZUO Guang¹, WAN Qian¹, ZHANG Yujia¹

1. Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China;
2. School of Mechanical Electronic & Information Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China

Received:2020-12-28 Revised:2021-01-12 Published:2021-02-02
Supported by:
National Natural Science Foundation of China (11802015,41806209)

摘要/Abstract

摘要： 高超声速飞行器级间分离过程广泛存在于军事和航空航天应用中。为了对该过程中气动干扰和各分离参数的影响有更加深入认识，以类X-43A飞行器为研究对象，采用网格变形/局部网格重构的方法对其进行仿真研究。详细分析了高超分离过程中典型的流场结构，尤其是飞行器和助推器之间的级间干扰；另外，重点讨论了初始攻角、弹射力对分离过程中飞行器和助推器的轴向/法向相对距离、气动力以及飞行器攻角的影响规律。结果表明：级间分离过程受到涡流和激波的双重干扰；攻角对飞行器和助推器法向相对距离影响较大，小攻角或负攻角更有助于二者分离；弹射力对轴向相对距离影响显著，较大的弹射力能够使飞行器较快脱离级间干扰区，达到安全的分离距离。

关键词: 类X-43A飞行器, 高超声速分离, 网格变形, 局部网格重构, 气动干扰

Abstract: Stage separation process widely exists in the military and aerospace applications of hypersonic aerocraft. To further understand the aerodynamic interference and parameter effects in the process, an aerocraft similar to X-43A is chosen as the research object, and the simulation method of mesh deformation/local grid reconstruction adopted. The typical flow field structure, particularly the interstage interference between the aerocraft and the assistor, during the separation process is analysed. Additionally, the influences of the initial angle of attack and ejection force on the axial and normal relative distance, aerodynamic force and the angle of attack during the separation process are emphatically discussed. The results show that the interstage separation process is disturbed by the vortex and shock waves. The angle of attack has a large effect on the relative distance between the aerocraft and the assistor, and a small or negative angle of attack is more helpful for the safe separation. The ejection force has a significant influence on the axial relative distance, and a larger ejection force enables faster separation of the aerocraft from the interstage interference zone to reach a safe separation distance.

Key words: aerocraft similar to X-43A, hypersonic separation, mesh deformation, local grid reconstruction, aerodynamic interference

中图分类号:

V421

赵飞, 刘丽玲, 石泳, 左光, 万千, 张宇佳. 类X-43A飞行器高超声速分离仿真[J]. 航空学报, 2022, 43(5): 125171-125171.

ZHAO Fei, LIU Liling, SHI Yong, ZUO Guang, WAN Qian, ZHANG Yujia. Hypersonic separation simulation of aerocraft similar to X-43A[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(5): 125171-125171.

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类X-43A飞行器高超声速分离仿真

Hypersonic separation simulation of aerocraft similar to X-43A

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