Fore flap disposed on the wing of an aircraft

Abstract

The invention relates to a fore flap disposed on the wing of an aircraft, wherein the wing comprises a main wing (24) having an upper planking (21), a lower planking (22), and a profile nose (23), and the fore flap (12) is on the front side of the main wing (24) and has a profile nose (10) oriented forward and an end edge (11) facing the main wing (24) and oriented rearward, and can be extended in order to increase lift by increasing the curvature and extent of the wing profile in the depth direction of the wing, from a retracted cruise flight position (I) in which the fore flap (12) contacts the front side of the main wing (24) and extends the profile thereof into a shape suitable for cruise flight, wherein the end edge (11) of the fore flap (12) contacts the main wing (24) in a first, partially extended position (II), and having the end edge (11) at a distance from the profile nose (23) of the main wing in a second, further extended position (IM), exposing high-energy air from the bottom side of the fore flap (12) to the top side (21) of the gap (14) leading the main wing (24). The fore flap (12) comprises a main body (6) and an end edge part (2) facing the main wing (24) and displaceable at an angle in the wing span direction of the fore flap (12) relative to the main body (6), and on which the end edge (11) of the fore flap (12) is provided, and which is acted on by means of a device (4; 8; 9) generating a contact force for contacting the end edge (11) of the fore flap against the profile nose (23) of the main wing (24).

Description

technical field [0001] The invention relates to a leading-edge flap arranged on an aircraft wing according to the preamble of claim 1 . Background technique [0002] In order to improve the lift of the airfoil of an aerodynamically efficient airfoil, a large number of high-lift assemblies are known in the prior art for increasing the curvature and curvature of the airfoil profile in the direction of the chord / or stretch, and thus increase the lift of the wing. In high-lift assemblies, which are arranged on the front side of the airfoil profile with respect to the direction of flow, a distinction is made between the leading-edge flaps, which are connected essentially without interruption On the front side of the original wing or on the main wing, and the leading edge flap, here at least in the extended state, there is a slot between the rear edge of the leading edge flap and the front edge of the main wing, the high-energy , that is, the air flowing at high velocity is gu...

AI Technical Summary

Problems solved by technology

During such slots, which direct high energy air from the underside of the leading edge flap to the upper side of the main wing, it is beneficial for landing due to its effect of increasing lift and delaying boundary layer separation, and is therefore worth pursuing , which on the other hand is detrimental to takeoff due to the increased drag associated with it

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