GAW-1翼型前后缘变弯度气动性能研究

doi:10.7527/S1000-6893.2015.0185

Abstract

Abstract:

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.

Key words: general aircraft, leading-edge droop nose, trailing-edge flap, ailerons, variable camber, aerodynamic performance

CLC Number:

V211.4

LU Weishuang, TIAN Yun, LIU Peiqing, WANG Tao, ZHANG Liangfu. Aerodynamic performance of GAW-1 airfoil leading-edge and trailing-edge variable camber[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(2): 437-450.

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

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