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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。
The aerodynamic performance of a two-dimensional airfoil with up-bias 20 ° spoiler and different-angled hinge flaps is numerically investigated and the flap-assisted deflecting schemes are selected for roll control and air braking of large passenger aircraft respectively . The calculation results show that: (1) For the roll control, the hinge flaps are further supported on the basis of the deflection of the spoiler, which can not only generate more rolling torque but also avoid unnecessary increase of resistance; (2) For the air brake, the hinge flaps are further supported on the basis of the spoiler deflection, so as to obtain better deceleration effect and avoid unnecessary lift loss.