不同类型的翼梢小翼在无人机设计中的应用

Application of Difference forms Winglet Design in the UAV

针对某型无人机进行融合式、双叉弯刀式2种不同形式翼梢小翼设计,对6组不同参数的小翼构型进行了基于RNAS控制方程的数值模拟计算,结果表明,双叉弯刀式小翼在气动效率的提高、横航向稳定性影响方面明显优于融合式翼梢小翼。结合数值模拟计算结果,从气动机理上对加装翼梢小翼后的纵向、横航向特性影响进行了分析,得出了2种不同形式小翼的气动特点及其各参数对气动性能的影响,其结论对中小型无人机翼梢小翼的设计提供了一定的参考依据。

Two different kinds of winglet were designed for the UAV in this paper, which called blended winglet and dou- ble fork scimitar winglet respectively. Based on the numerical simulation of the RNAS control equation, analysis of six winglets with different parameters was presented. The result showed that the kind of double fork scimitar winglet had bet- ter ability on the aerodynamic efficiency as well as thelateral and directional stability. The aerodynamic principle for air- flow around winglet was explained, and also the influence of longitudinal stability, lateral stability. The influences for aero- dynamic abilities by geometry characteristics of the two different forms of winglets were described here. At last, there were some valuable conclusions for the UAV winglet design.