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长航时无人机普遍采用轻质、高比强度复合材料结构大展弦比机翼,该类机翼在飞行过程中表现出显著的几何非线性和气动非线性,进而导致机翼的气动弹性非线性.大展弦比复合材料机翼的设计分析方法与传统机翼有很大不同.为研究大展弦比复合材料机翼的进展,并预测其未来可能的发展方向,对现有大展弦比复合材料机翼设计、分析、试验方法进行分析总结.首先,对大展弦比复合材料机翼结构设计方法、结构分析方法进行了介绍;然后,介绍了两类用于大展弦比机翼的气动力分析方法:基于片条理论和二元非定常气动力相结合的气动力分析方法以及考虑展向流动效应的三维气动力分析方法,重点总结了复合材料大展弦比机翼静气动弹性、动气动弹性分析方法以及主动控制技术在大展弦比机翼中的应用,并分析了大展弦比复合材料机翼气动弹性剪裁最新进展;最后,综述了大展弦比复合材料机翼试验研究进展.基于文献分析可知,现有大展弦比复合材料机翼的结构模型多采用等效梁板模型,气动模型多采用片条理论与考虑动失速的二元非定常气动力相结合的模型.气动降阶模型与结构模型相耦合进行相关研究,以及大展弦比复合材料机翼的飞行试验,均是大展弦比复合材料机翼未来可能的研究发展方向.
The long-duration UAS generally adopts a large aspect ratio wing with a composite structure of light weight and high specific strength. Such wings show remarkable geometric nonlinearity and aerodynamic nonlinearity during flight, which in turn leads to aerodynamic Elastic non-linearity.The design and analysis method of the large aspect ratio composite wing is very different from the traditional wing.In order to study the progress of large aspect ratio composite wings and predict the possible future direction, Large aspect ratio composite wing design, analysis and test methods were analyzed and summarized.Firstly, the design method and structure analysis method of large aspect ratio composite wing were introduced.Secondly, two kinds of methods for the exhibition Aerodynamic analysis method of chord-ratio airfoil: Based on the aerodynamic analysis method combining the theory of slice and the unsteady aerodynamic force of two-dimensional and the three-dimensional aerodynamic analysis method considering the effect of unidirectional flow, the aspects of large aspect ratio Wing static-dynamic elasticity, dynamic-elastic-elastic analysis method and active control technology in large aspect ratio wing, and the latest development of aeroelasticity tailoring of large aspect ratio composite wing is analyzed. Based on the literature analysis, we can see that most of existing structural models of large aspect ratio composite wing adopt the equivalent beam plate model, the aerodynamic model mostly adopts the theory of slice Considering the combination of two-dimensional unsteady aerodynamics of moving stall, the aerodynamic reduction model is coupled with the structural model, and the flight test of the large aspect ratio composite wing are both large aspect ratio composite machines Wing possible future research direction.