High-accuracy static aeroelastic analysis of fighter's transonic aileron efficiency and test flight verification
HE Fei1,2, YANG Chao1, DAN Dan2, LIU Hai2, WANG Ming2
1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;;
2. Department of General Design, Chengdu Aircraft Design & Research Institute, Chengdu 610000, China
Abstract:The transonic aileron efficiency is a hotspot and difficulty in the field of static aeroelastic analysis. The computational fluid dynamics (CFD)/computational structural dynamics (CSD) interaction method can supply high-accuracy resolutions, but it still has problems of mesh deformation robustness and lack of verification. Aimed at the above issues, a new method of mesh deformation based on dummy grids and dummy deformation was developed, and for the problems of non-physical oscillation and non-uniformly convergence in the process of interaction, the lax iteration method and comprehensive residual criterions were used. Based on the methods, the transonic (Ma=0.95) aileron efficiency of a fighter was analyzed, and the shock position/strength and the pressure distribution due to the static aeroelastic deformation were presented. The ration of elastic and rigid aileron efficiency was compared to the results of flight identification, which proves that the methods can meet the requirement of high-accuracy analysis for transonic static aeroelastic problems of control surfaces. The methods are of great significance for static aeroelastic engineering design capability enhancement.
何飞, 杨超, 但聃, 刘海, 王明. 跨声速副翼效率高精度静弹分析及试飞验证[J]. 北京航空航天大学学报, 2017, 43(3): 457-463.
HE Fei, YANG Chao, DAN Dan, LIU Hai, WANG Ming. High-accuracy static aeroelastic analysis of fighter's transonic aileron efficiency and test flight verification. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2017, 43(3): 457-463.
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