缝翼,又称“前缘缝翼”。是指增升装置的一种。装在机翼前缘的活动翼面。打开时,向前推出与机翼形成一条缝隙,机翼下面的气流经过缝隙流到上表面,增加上翼面气流的速度,延缓气流层的分离,提高升力系数,降低失速速度。缝翼只在大迎角低速飞行时起作用。髙速飞行时,缝翼收回,以减小阻力。
他走到窗口和通过百叶窗的缝翼向外看。
He walked to the window and peeked between the slats of the blinds.
防冰系统可防止冰在缝翼前缘堆积,此系统包括供气管道、活门、终端开关、控制及指示器。
The wing anti-ice system prevents ice buildup on the wing leading edge slats, this system consists of air supply ducts, valves, terminal switches, controls and indications.
如此卓著的效率应当归功于低阻机翼、前缘缝翼和双开缝襟翼,以及高马赫混合式翼梢小翼。
This efficiency is due largely to the innovative design of the low-drag wing. This design includes leading-edge slats, double-slotted Fowler flaps, and high-Mach blended winglets.
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