一种旋转式双缝襟翼气动特性的风洞试验研究

Studies on the Wind Tunnel Test of Aerodynamic Characteristics of a Rotary Double Slotted Flaps

介绍了一种旋转式双缝襟翼应用在轻型飞机上的情况,通过风洞试验对襟翼的气动特性进行了研究。结果表明,在正常飞行速度范围内,这种双缝襟翼的阻力较小,增升效率比较高,由襟翼放下造成的俯仰力矩变化不大,整机气动性能稳定,增升性能优良。最后指出了该种双缝襟翼在不同风速、不同放下角度时的各气动特性情况和基本变化规律。

In this paper, the application of a kind of rotary double slotted flap in the light aircraft is introduced, and the aerodynamic characteristics through the wind tunnel test were studied. The research results show that in normal flight speed range, the double slotted flap has less drag, high efficiency on lift Increment, pitching moment caused by the flap down changes a little, the aircraft integral performance is stable and high - lift performance is better. This paper emphasizes studies on the double slotted flaps at different wind speeds and different angles, the aerodynamic characteristics and its change rule.