A CFD-based numerical virtual ?ight simulator and its application in control law design of a maneuverable missile model

论文摘要

A CFD-based Numerical Virtual Flight（NVF） simulator is presented, which integrates an unsteady ?ow solver on moving hybrid grids, a Rigid-Body Dynamics（RBD） solver and a module of the Flight Control System（FCS）. A technique of dynamic hybrid grids is developed to control the active control surfaces with body morphing, with a technique of parallel unstructured dynamic overlapping grids generating proper moving grids over the de?ecting control surfaces（e.g. the afterbody rudders of a missile）. For the ?ow/kinematic coupled problems, the 6 DegreeOf-Freedom（DOF） equations are solved by an explicit or implicit method coupled with the URANS CFD solver. The module of the control law is explicitly coupled into the NVF simulator and then improved by the simulation of the pitching maneuver process of a maneuverable missile model. A nonlinear dynamic inversion method is then implemented to design the control law for the pitching process of the maneuverable missile model. Simulations and analysis of the pitching maneuver process are carried out by the NVF simulator to improve the ?ight control law. Higher control response performance is obtained by adjusting the gain factors and adding an integrator into the control loop.

论文目录

文章来源

类型: 期刊论文

作者: Laiping ZHANG,Xinghua CHANG,Rong MA,Zhong ZHAO,Nianhua WANG

来源: Chinese Journal of Aeronautics 2019年12期

年度: 2019

分类: 工程科技Ⅱ辑,信息科技

专业: 武器工业与军事技术,自动化技术

单位: State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center,Computational Aerodynamics Institute, China Aerodynamics Research and Development Center

基金: supported partially by National Key Research and Development Program (No. 2016YFB0200701),National Natural Science Foundation of China (Nos. 11532016 and 11672324)

分类号: TJ765

页码: 2577-2591

总页数: 15

文件大小: 13713K

下载量: 30

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