Aerodynamic performance of GAW-1 airfoil leading-edge and trailing-edge variable camber

被引：0

作者：

Lu W. ^{[1
]}

Tian Y. ^{[1
]}

Liu P. ^{[2
]}

Wang T. ^{[1
]}

Zhang L. ^{[1
]}

机构：

[1] Large Aircraft Advanced Training Center, Beihang University, Beijing

[2] School of Aeronautic Science and Engineering, Beihang University, Beijing

来源：

Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2016年 / 37卷 / 02期

关键词：

Aerodynamic performance; Ailerons; General aircraft; Leading-edge droop nose; Trailing-edge flap; Variable camber;

D O I：

10.7527/S1000-6893.2015.0185

中图分类号：

学科分类号：

摘要：

The traditional high-lift device is used to improve the taking-off and landing aerodynamic performance of aircraft. By using the method of computational fluid dynamics (CFD), an idea of leading-edge and trailing-edge variable camber devices based on general aviation airfoil is introduced. The influences of leading-edge variable camber device, trailing-edge flap/aileron, and both leading-edge and trailing-edge variable camber devices of GAW-1 airfoil in the climbing state on airfoil aerodynamic performances are studied respectively. Learning from the results, leading-edge variable camber device can effectively improve the airfoil stall characteristics, increasing the angle of stall by about 3°, and the maximum lift coefficient has been increased by 4.56%. At the same time, the lift-to-drag ratio has been increased by 50% to 120%. But with the design lift coefficient, both lift coefficient and drag coefficient have been decreased. On the other hand, the function of trailing-edge variable camber device is to reposition the maximum of lift-to-drag ratio and to increase the lift coefficient by about 6% at a small angle of attack. Composite deflection of airfoil can increase lift coefficient at small angle of attack and increase lift-to-drag ratio at large angle of attack. © 2016, Press of Chinese Journal of Aeronautics. All right reserved.

引用

页码：437 / 450

页数：13

共 20 条

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