Trailing edge flaps having spanwise aerodynamic slot opening and

High lift devices come in many different flavours: flaps, slots, slats etc single control surface on each wing called a 'flapperon'

Because of the slots action, they lower the stall speed more than Krueger Flaps individual jackscrews that move the flap section out and back

single slot linear diffuser 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

single slot garage door seal A type of trailing edge flap These may be single, double, or triple slotted They form a slot between their leading edge and the inside of the flap well