Effect of Leading-Edge Slats at Low Reynolds Numbers

This shows how open the slot is compared to the regular 701 fixed slats, and also how the wing leading edge is sharp, and the slot is much more streamlined

Unlike other types of flaps, Krueger flaps are mounted on the leading edge of the wing rather than the trailing edge When extended, they create a slot

fixed slot leading edge A fixed, nozzle shaped opening near the leading edge of a wing that ducts air onto the top surface of the wing Its purpose is to increase lift at higher angles

bali slot With fixed slots such as shown in figure 2 the lift continues to increase above the angle of attack where the original plain wing stalls Here