NACA 23012 airfoil with single slotted flap

from plain flaps to Fowler flaps with single, double, and even triple slots Wing leading edges evolved from fixed leading edges to a simple Krueger flap, and

With careful aerodynamic design, a single-slotted flap can be deflected to about 40° Single-slotted flaps were widely used in the early days of the jet age,

single slot shelving brackets you put a single flap like this, same angle Answer is obvious, if I flaps and provided a slot So, that local separation is delayed and this is

single slot shelf brackets Does the C-152 have single slotted or fowler flaps? :crazy: