Patent ID: 9227719
Filing Date: 2016-01-05
CPC Classification: B64C,Y02T

Claim Text:
1. A flap of the type that is movably connected to an aircraft wing to provide control of an aircraft in flight, the flap comprising: an elongated flap structure defining inboard and outboard ends and forward and rearward portions extending between the inboard and outboard ends, the elongated flap structure defining an upper side extending between the inboard and outboard ends and between the forward and rearward portions, and a lower side, wherein the upper side generally faces upwardly in use, and the lower side generally faces downwardly in use, and wherein the inboard end defines an inwardly-facing inboard end surface and the outboard end defines an outwardly-facing outboard end surface, and wherein the upper and lower sides define inboard and outboard end portions adjacent the inboard and outboard end surfaces, respectively, that tend to generate noise to form a noise source in use, and wherein: at least a portion of at least one of the inboard and outboard end surfaces and at least one of the inboard and outboard end portions of the upper and lower sides include a perforated portion having perforations that are connected to corresponding perforations internal to the flap, wherein the internal perforations are located within at least one of the inboard and outboard end portions, wherein the internal perforations comprise an approximately orthogonal lattice arrangement, and wherein the connecting corresponding perforations comprise the substantially same cross-sectional shape and dimensions.