摘要
为了了解扑翼飞行器在扑动过程中的气动力,采用非定常涡格法模拟扑动过程中的气动力计算,得到了刚性扑翼在扑动周期内气动力的变化及尾涡的形态。在此基础上,研究了扑翼的周期平均气动力随扑动频率、幅度、迎角及来流速度的变化关系,并进一步研究了不同的机翼平面形状对气动力的影响。计算结果表明,迎角和扑动频率的增大能够增加扑翼的升力,不同翼面形状的扑翼在升力特性及推力特性方面具有不同的优势。
To know the aerodynamic force of flapping-wing vehicle during the flight,aerodynamic force calculation was simulated by using the unsteady vortex lattice method. The aerodynamic force＇s change and the wake＇s shape of some flapping wings were obtained. Then,the change of the average aerodynamic force with some parameters was analyzed,such as flapping frequency,flapping angle range,AOA and the inflow speed. Furthermore,the influence of different shapes of flapping wings on the aerodynamic force was analyzed. The results show that the increase of the AOA and flapping frequency could contribute to the increase of average lift. The shape of wing has an influence on the lift and thrust.
出处
《飞行力学》
CSCD
北大核心
2015年第1期17-20,25,共5页
Flight Dynamics
关键词
扑翼飞行器
非定常涡格法
机翼平面形状
平均气动力
flapping-wing vehicle
unsteady vortex-lattice method
wing shape
average aerodynamic force
