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Simplified analytical models for hypersonic lateral-directional stability

文献类型：期刊论文

作者Guo SQ(郭帅旗); Liu W(刘文); Zhang CA(张陈安); Zhou X(周翔); Wang FM(王发民)
刊名ACTA ASTRONAUTICA
出版日期2022-09
卷号198页码:431-444
关键词Lateral stability Directional stability Analytical model Viscous effects
ISSN号0094-5765
DOI10.1016/j.actaastro.2022.06.024
英文摘要The balance of lateral and directional static stability plays an important role in the lateral-directional dynamics and vehicle design. The theory of geometric influence on the lateral and directional static stability is mature for conventional aircrafts. However, the distinct configuration characteristics and flow physics for hypersonic vehicles may lead to different design theory, which is absent now. In order to solve this problem, simplified analytical models of lateral-directional static derivatives are proposed based on the simplified geometry model. It's found that the lateral and directional stability both increase as the deflection angle, dihedral angle, or angle of attack increases, whereas the influence of sweep angle can be neglected. The difference lies in that the lateral stability is proportional to dihedral angle while the directional stability is proportional to the square of dihedral angle. The reasonable accuracy is validated in comparison with the inviscid numerical solutions. Furthermore, the influence mechanism of viscous effects on the lateral and directional stability is investigated in detail based on the numerical results. It's found that the strong viscous interaction can improve the lateral stability evidently, and both the strong viscous interaction and the shear stress can lead to the increase of the directional stability. In addition, the lateral stability is slightly reduced by the chemical nonequilibrium effects.
学科主题Engineering, Aerospace
分类号二类/Q1
语种英语
WOS记录号WOS:000822433400006
资助机构National Natural Science Foundation of China [11902324] ; Strategic Priority Research Program (A) of Chinese Academy of Science [XDA17030000]
其他责任者Liu, W (corresponding author), Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China. ; Liu, W (corresponding author), Inst Mech, Beijing 100190, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/90136]  
专题力学研究所_高温气体动力学国家重点实验室
作者单位1.Inst Mech, Beijing 100190, Peoples R China
2.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
3.Zhou, Xiang
4.Zhang, Chen-An
5.Liu, Wen
6.[Guo, Shuai-Qi
推荐引用方式
GB/T 7714		 Guo SQ,Liu W,Zhang CA,et al. Simplified analytical models for hypersonic lateral-directional stability[J]. ACTA ASTRONAUTICA,2022,198:431-444.
APA 郭帅旗,刘文,张陈安,周翔,&王发民.(2022).Simplified analytical models for hypersonic lateral-directional stability.ACTA ASTRONAUTICA,198,431-444.
MLA 郭帅旗,et al."Simplified analytical models for hypersonic lateral-directional stability".ACTA ASTRONAUTICA 198(2022):431-444.

入库方式： OAI收割

来源：力学研究所

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