【摘要】 寻找增大起降升力系数、降低起降距离的方法,一直是飞机设计领域的重要研究问题。文中通过数值模拟的方法,研究了螺旋桨滑流对飞机机翼和襟翼气动特性的影响。计算结果表明,螺旋桨的滑流对襟翼的增升有显著的提升效果,并且随着襟翼的偏转角度增大及螺旋桨的转速的提高越大,该效果也会进一步增强。通过该研究,在飞机设计时可以综合考虑上述影响,选取合适的螺旋桨和襟翼进行配合,找到螺旋桨的最佳位置,得到最大的升力系数,降低起降场长。更多还原

【Abstract】 In order to find a way to increase the lift coefficient and reduce the distance between take-off and landing,this paper studied the effect of propeller slipstream on the aerodynamic characteristics of aircraft wings and flaps by numerical simulation.The calculation results show that the slipstream of the propeller will increase the lift effect of the flap.And when the deflection angle of the flap is larger,the improvement effect will be more obvious.The effect of the propeller is stronger when it’s speed is higher.Moreover,an optimum position can be found to maximize the effect of the propeller.更多还原