某螺旋桨长航时无人机气动力改进设计与分析

Improved design and analysis on aerodynamics for a propeller-driven long-endurance UAV

针对螺旋桨长航时无人机的使用设计要求,从现有单段翼型出发进行了高升力两段翼型设计。结合某型螺旋桨长航时无人机,对采用两段翼型机翼的翼身组合体数模进行了气动力特性分析。计算结果表明,所设计的两段机翼可以产生比单段机翼更大的可用升力和更高的续航因子,说明该设计思想是可行的。

A high-lift two-element airfoil was designed according to the features and requirements of a propeller-driven long-endurance UAV.The two-element wing,which was stretched from the designed high-lift two-element airfoil,was mounted on a propeller-driven UAV.The aerodynamic characteristics of the UAV was simulated by the RANS method and the results showed that the two-element wing UAV could produce more lift and realize maximum endurance factor at high loitering lift coefficients.This indicates that the design ideas and methods in this paper are effective.