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在设计机翼时,要求机翼不仅要具有足够的强度,而且还应具有足够的刚度,以保证其满足气动特性要求及其他要求。翼梁腹板厚度设计对机翼强度和刚度影响很大。所以,如何设计翼梁腹板厚度的展向分布,使机翼满足强度要求和刚度要求,是一个非常有意义的问题。本文针对某无人机机翼结构,研究了满足静强度要求、气动特性要求和副翼操纵效率要求的弹性机翼腹板厚度展向分布的设计方法。首先,根据无人机机翼气动特性设计要求设计机翼的刚度大小沿展向分布;然后,根据展向机翼刚度展向分布设计机翼腹板厚度分布;最后,分析该无人机在给定设计飞行状态下的强度和副翼操纵效率,并对其进行优化。
In the design of the wing, the wing is required not only to have sufficient strength, but also should have sufficient rigidity to ensure that it meets aerodynamic characteristics and other requirements. The thickness design of the spar web has a great influence on the strength and rigidity of the wing. Therefore, how to design the span distribution of the thickness of the spar web so that the wing meets the strength and stiffness requirements is a very significant issue. In this paper, a UAV wing structure is studied. The design method of the span distribution of the elastic webs is studied, which meets the requirements of static strength, aerodynamic characteristics and aileron control efficiency. First, according to the aerodynamic design requirements of the UAV wing, the stiffness of the wing is designed to be distributed along the span direction. Then, the thickness distribution of the wing web is designed according to the spread of the wing stiffness. Finally, The intensity and aileron manipulation efficiency for a given design flight is optimized and optimized.