Patent ID: 9440729
Filing Date: 2016-09-13
CPC Classification: B64C

Claim Text:
1. A high-lift-device comprising: a flap main body that is disposed so as to be extendable and retractable relative to a main wing; and a protruding portion that smoothly protrudes at least at a vicinity of a first end portion in a span direction of a positive-pressure surface of the flap main body in a direction away from the flap main body, wherein an amount of protrusion of the protruding portion from the flap main body smoothly increases from a leading edge side of the flap main body toward an intermediate portion of the flap main body, wherein the amount of protrusion of the protruding portion from the flap main body smoothly decreases from the intermediate portion of the flap main body toward a trailing edge side of the flap main body, wherein the amount of protrusion of the protruding portion from the flap main body smoothly increases from the first end portion of the flap main body toward the intermediate portion of the flap main body in the span direction, wherein the amount of protrusion smoothly decreases from the intermediate portion of the flap main body toward a second end portion of the flap main body in the span direction, wherein the protruding portion protrudes continuously from a side surface of the first end portion of the flap main body, wherein the protruding portion is a smooth, curved surface without an opening on the positive-pressure surface of the flap main body, and wherein the protruding portion is one of at most only two protruding portions located on the positive-pressure surface of the flap main body.