What type of flaps is the more effective?

WING FLAPS - single slot flaps flaps to Fowler flaps with single, double, and even triple slots Trailing Edge Flaps Plain Flap Split Flap Slotted Flap Fowler Flap Double single slot vs dual slot gpu This craft is equipped with single-slotted fowler flaps and leading edge slats At the very least I thought adding a slot to the fowler flaps

single slot shelving 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 from