Patent ID: 7874524
Filing Date: 2011-01-25
Classification: B64C,Y02T

Abstract:
1. A multi-segment flap fence for an aircraft wing having a flap, comprising: a first fence segment fixed to and extending from a top surface of the flap; and a second fence segment fixed to and extending from a bottom surface of a fixed portion of the wing in a direction opposite that of the first fence segment; wherein the first fence segment and the second fence segment are configured to slide past each other to comprise a composite fence structure when the flap is in an extended position, said first and second fence segments substantially parallel to one another and a flow field during flight; and wherein the first fence structure has a first trailing edge, and the second fence structure has a second trailing edge, wherein the first and second trailing edges are substantially contiguous to approximate the shape of a single fence flap structure having an area that is substantially equal to the sum of the surface area of said first and second fence structures when the flap is in the extended position.