How much do these type of flaps increase drag?

How much do these type of flaps increase drag? single slot flaps Statements are made for the aerodynamic efficiency of a wing with a slotted flap, depending on the slot size Influence of Single Slotted Flap single coil in humbucker slot Single slotted flap the trailing edge flaps are deflected in Deploying a Krueger flap will form a slot, deploying a slat does not

single coil in humbucker slot 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

single slot substitution drill example slots Moreover, a single actuating mechanism is required to swing the entire main flap segment between its first and second positions The Flaps are lift devices mounted on the wing trailing edge When extended, they increase lift and reduce the stall speed facilitating take off and landing