The main objective of this invention is to reduce the induced flap vortex at the flap end with different concepts, which are presented in the following pictures. The idea Is to integrate so called flap-lets for single slotted flap (SSF) at the flap-ends or additionally lab-lets for double slotted flaps (DSF) at the tab-ends The flap-lets and tab-lets can be fixed attached to the flap or tab. But to have a better cruise performance deployable flap-lets and deployable tab-lets are also possible, which are indirectly actuated with a mechanisms or directly with additional energy source In terms of an actuator (see Figure 5). In retracted configuration the flap-lets and tab-lets are fully stowed in the outer false work (OFW) or fixed trailing edge (FTE)of the wing or flap. Furthermore so called flap-slicks For single slotted flap (SSF) at the flap-ends or additionally tab-sticks for double slotted flaps (DSF) at the tab-ends are possible. Tnhe flap-sticks and tab-sticks can be fixed attached to the flap or tab. But to have a belter cruise performance deployable flap-sticks and deployable tab-sticks are also possible, which are indirectly actuated with a mechanisms or directly with additional energy source in terms of an actuator (see Figure 6). In retracted configuration the flap-sticks and tab-sticks are fully stowed in the outer false work (OFW) or fixed trailing edge (FTE) of the wing or flap. Like already mentioned a movable/deployable flap-let or tab-let is beneficial during cruise for drag in highspeed operation, but requires a depioyable mechanisms. Three possible solution are shown in Figure 7, Figure 8, and Figure 9, so different links and facet-blades are one presented solution, but also a lot of more different design-concepts can be imagined.
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