A multi-time scale solution strategy for an elastomeric aircraft | |
Yang L(杨磊)1,2; Sun QH(孙泉华)1,2 | |
发表期刊 | AEROSPACE SCIENCE AND TECHNOLOGY |
2020-08-01 | |
卷号 | 103页码:13 |
ISSN | 1270-9638 |
摘要 | This paper develops a multi-time scale kinetics solution strategy for the flight dynamic simulation of elastomeric aircraft. The combination of computational fluid dynamics (CFD) solver and reduced-order model is utilized to calculate the aerodynamics of elastic aircraft. CFD is applied to the aerodynamic solution of rigid motion, and reduced-order model is to the elastic deformation. The governing equations of rigid-body dynamics and structure dynamics are decoupled in time-scale, and their time step sizes can be set differently. This method overcomes the problem of large difference in characteristic times between rigid-body dynamics and structure dynamics, and improves the calculation efficiency of CFD based multi-disciplinary coupling solution. For current work, the multi-time scale kinetics solution method is applied to the simulation of store separation problem considering elastic deformation of carrier aircraft. The autoregressive with exogenous input model is employed to establish the generalized aerodynamic model of carrier. By comparison, the time responses of store obtained by the multi-time scale kinetics solution method are in good agreement with those by traditional CFD based multi-disciplinary coupling simulation, which validates high precision of the new method. Furthermore, the calculation amount of the new coupled calculation method is reduced by about an order of magnitude compared with that of the traditional method. The multi-time scale kinetics solution method can provide an effective solution strategy for similar engineering problems. (C) 2020 Elsevier Masson SAS. All rights reserved. |
关键词 | Flight dynamic simulation Multi-time scale Elastomeric aircraft Reduced order models Store separation |
DOI | 10.1016/j.ast.2020.105884 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000551867100008 |
关键词[WOS] | FLIGHT DYNAMICS ; AERODYNAMICS ; DEFORMATION ; PROJECTILES ; SIMULATION ; STORE |
WOS研究方向 | Engineering |
WOS类目 | Engineering, Aerospace |
项目资助者 | Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] |
论文分区 | 一类 |
力学所作者排名 | 1 |
RpAuthor | Yang, Lei |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/84739 |
专题 | 高温气体动力学国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Chinese Acad Sci, Lab Aerosp Sci & Technol, Inst Mech, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Yang L,Sun QH. A multi-time scale solution strategy for an elastomeric aircraft[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2020,103:13. |
APA | Yang L,&Sun QH.(2020).A multi-time scale solution strategy for an elastomeric aircraft.AEROSPACE SCIENCE AND TECHNOLOGY,103,13. |
MLA | Yang L,et al."A multi-time scale solution strategy for an elastomeric aircraft".AEROSPACE SCIENCE AND TECHNOLOGY 103(2020):13. |
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