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针对蜻蜓扑翼飞行机理与鸟类单翼飞行机理的不同,设计了一种双翅翼空间四杆扑翼机构,提出了一种非对称刚度柔性翅翼。该翅翼上拍时刚度较小,下拍时刚度较大,上拍时翅翼变形比下拍时翅翼变形大,空气阻力较小,可以提高每个拍动周期中的等效升力,从而有效减小飞行器飞行时的能耗速度,提高飞行效率。基于非定常空气动力学原理,建立了仿蜻蜓扑翼飞行器的动力学模型,对双翼挥拍过程中不同相位差下的升阻特性进行了分析,可为飞行过程中扑动模式的选择提供参考。
In view of the different mechanism of the flapping wing flight mechanism and the single-wing flight mechanism of the dragonfly flapping wing, a four-limb flapping wing mechanism with double-winged wings was designed and a flexible wing with asymmetric stiffness was proposed. The stiffness of the wing when the wing is small, the next shot when the stiffness greater when the wing when the wing deformation than the next film when the wing deformation, air resistance smaller, you can increase each beat cycle equivalent lift, Thus effectively reducing the speed of aircraft energy consumption and improve flight efficiency. Based on the principle of unsteady aerodynamics, the kinetic model of the imitation dragonfly flapping wing aircraft was established, and the drag and drop characteristics under different phase differences during the swinging of the two wings were analyzed, which could provide a reference for the selection of the flapping mode in flight .