襟翼辅助扰流板进行滚转控制和空中制动的数值研究

对带有上偏20°扰流板和不同偏角铰链襟翼的二维翼型气动性能进行了数值研究,并选择了分别适用于大型客机滚转控制和空中制动的襟翼辅助偏转方案。计算结果表明:(1)对于滚转控制,在将扰流板上偏的基础上进一步将铰链襟翼辅助上偏,既能产生更大的滚转力矩,又能避免不必要的阻力增加;(2)对于空中制动,在将扰流板上偏的基础上进一步将铰链襟翼辅助下偏,既能获得更好地减速效果,又能避免不必要的升力损失。

Numerical Study of Spoiler Aided by Flap on Roll Control and Airbrake

By using numerical simulations, this paper concentrates on the aerodynamic characteristics of airfoils with a 20° upward deflecting spoiler as well as a hinge flap of different deflections, and makes a choice of flap deflection solutions suitable for roll control as well as airbrake of large airliners as an aid to spoiler. The results show two points: 1) As an aid to upward deflecting spoiler for roll control, deflecting hinge flap upward helps to create a larger roll moment while preventing unnecessary drag increment. 2) As an aid to upward deflecting spoiler for airbrake, deflecting hinge flap downward helps to achieve better deceleration while preventing unnecessary lift loss.