翼梢装置对机翼气动、结构特性影响研究  

Investigation of effects of winglets on wing′s aerodynamic and structural behavior

作　　者：司亮[1] 王和平[1] 龚翠翠[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072

出　　处：《空气动力学学报》2011年第2期177-181,共5页Acta Aerodynamica Sinica

摘　　要：主要研究了不同翼梢装置对飞机气动、结构特性的影响。对几种带翼梢装置机翼的气动特性N-S计算结果进行对比分析,揭示了不同翼梢装置的减阻机理及对飞机气动性能的影响。采用MSC Patren,MSC Flds建立基本翼及几种带翼梢装置机翼的动力学有限元模型和非定常空气动力网格,应用MSC Nastran求解序列SOL103对其进行固有模态分析,利用求解序列SOL 145进行颤振分析,通过对比分析得到翼梢装置对机翼的振动和颤振特性影响。A detailed analysis of the aerodynamic and structural performances of the wings with different winglets has been presented in this paper.The aerodynamic performances of the wings with different winglets have been investigated by numerical method based on N-S equations.Comparison shows that the induced drag reduces,and the performance of the aircraft improves.The element model of the based wing and the wings with different winglets is built by MSC Patran,and the unsteady aerodynamic model is built by MSC Flds.The normal modes and frequencies are calculated by Nastran with SOL103.The characteristics of flutter are calculated by Nastran with SOL145.Comparison shows the influences of the characteristics of flutter.

关 键 词：翼梢装置 诱导阻力 有限元模型 颤振 MSC NASTRAN 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]