How much do these type of flaps increase drag?

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

Nowadays, almost all new aircraft feature single-slot flaps Even the 777-9 got some, and the 747-8 went from triple-slot to double-slot What

single slot substitution drill Split flaps are no longer used because they produce more drag than a plain flap with the same increase in lift The slotted flap gets its name from the slot

single slot substitution drill example The motion opens a slot along the trailing edge that is imperative to the flap's functionality It can be a single wide flap, or separate flaps port and