Why no more multi-slot flaps? -

single slot flaps   Dan single slot toaster

For example, many low-wing planes have the two flaps, one left and one right, welded together on a single strut When the flap extends, a slot

According to the 172S Information Manual it has a single-slot type flap system Though according to the FAA def, it's a folwer flap system  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

aluminum slot wheels 30% C and 40% C single slotted flaps at zero angle of attack The dynamic simulation was performed for three different length of slot flap ( Cf flap angle for single, double and triple-slotted flaps The deflection angle also varies typically between 10° and 20° with only one slot For low-gross