I've always wondered about the slots..do they actually work? Intuitively it makes little sense to me, but intuition and science is not the same
When you add, ( Angle Of Attack ) to a normal un-slotted wing, the airflow
will start to separate on the upper surface, then reverse causing the
wing to stall. Kinda like the rotor on a cliff, the air reverses .
Doing the same on a Slotted flap will also add AOA, but the air on the upper
surface tends to stay Stuck to the wing thus delaying that stall and Adding Lift !!!
It works because your actually sucking the High pressure off the bottom of the
airfoil, then tossing into the Low pressure on top of the airfoil. As a result
the air hitting the wing actually Thinks the airfoil is Thicker than it really is, and
the air tends to stay stuck to the wing's skin.
It works the same way on the Leading Edge also, there called Leading Edge Slot's
Sewing a 1.5 inch wide screen fabric to the skin of a LEI, and attaching it to where
the skin is sewn to the LE Bladder, SHOULD work the same way as a sloted Leading
They actually do that to the REV ll ; has it bin done to a modern kite ?