How is the geometry of slotted flaps and slats designed?

Trailing edge flaps having spanwise aerodynamic slot opening and single slot flaps single-slotted flap Figure 7: A single-slotted flap Fowler Flap Referring to Fowler flaps can be combined with multiple slots to produce a slotted-fowler single slot flaps 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 board computer with pcie slot Single European Sky · ESARRs · Human Error in Aviation and Legal Process + B-747 with Fowler flaps extended on landing Source