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微飞行器前后双扑动翼的推进效率比单扑动翼高。该文通过在动态网格上求解Navier-Stokes方程,对前翼扑动后翼静止、前后翼同相扑动和前后翼反相扑动3种运动方式的流场进行了数值模拟和气动干扰的分析。前翼扑动后翼静止,其推力系数和推进效率比单翼扑动分别增加65%和44%;前后翼同相扑动时产生的推力甚至超过单翼扑动的2倍;但前后翼反相扑动时,推力大大减小,不足同相扑动的一半。结果表明,处于前翼扑动尾流中的后翼对气动特性影响很大。
The propulsion efficiency of the double flutter wings before and after the micro-aircraft is higher than that of the single flutter wing. By solving the Navier-Stokes equations on a dynamic grid, the numerical simulations and aerodynamic interferences of the flow field of three kinds of motion modes, ie, the static motion of the front wing flapping wing, the front and rear wings flapping in the same phase, analysis. The front wing flap flutter after the wing stationary, its thrust coefficient and propulsion efficiency than the single flutter increased by 65% and 44% respectively; before and after the wing flutter generated thrust thrust even more than double flutter flutter; Sumo wrestling, the thrust greatly reduced, less than half of the same phase of the same. The results show that the aft wing in the wake flutter of the front wing has a great influence on the aerodynamic characteristics.