实验流体力学2013，Vol.27Issue(4)：1-6,6.
翼型加装格尼襟翼的低雷诺数气动特性实验研究
Experimental study on aerodynamic characteristics of airfoil equipped with Gurney flaps at low Reynolds numbers
摘要
Abstract
In order to study the aerodynamic characteristics of airfoil equipped with Gurney flap at low Reynolds numbers,Eppler387 airfoil is equipped with 0.5％ ～5.0％ chord height Gurney flap for wind tunnel test.The Reynolds numbers in the test are from 1.49× 105 to 2.31 × 105.The results suggest that lift coefficient and moment coefficient of Eppler387 airfoil equipped with Gurney flap are improved significantly at low Reynolds numbers.Drag coefficient is also improved when the flap is higher than 2％ chord.Lift-to-drag ratio is improved when lift coefficient is high,so that Gurney flaps is suitable for MAV or small aircraft with heavy payload.0.5％ chord height Gurney flap is also suitable for cruise,since it has better aerodynamic efficiency at low lift coefficient at the same time.Compared with clean airfoil,the angle corresponding to the highest lift-to-drag ratio becomes smaller with the effect of Gurney flaps.When Gurney flaps are higher,the curves of lift-to-drag ratio become smoother.关键词
格尼襟翼/低雷诺数/翼型/气动特性/升阻比Key words
Gurney flap/ low Reynolds number/ airfoil/ aerodynamic characteristics/ lift-to-drag ratio分类
航空航天引用本文复制引用
崔钊,李建波,赵洪..翼型加装格尼襟翼的低雷诺数气动特性实验研究[J].实验流体力学,2013,27(4):1-6,6.基金项目
国家"863"计划(2011AA7052002) （2011AA7052002）
江苏省研究生培养创新工程(CX10B_104Z) （CX10B_104Z）
