Helicopter aerofoil with trailing edge flap
AssigneeAgustawestland S.P.A.
InventorsAndrew Cave, Simon Stacey
Life of this patent
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Abstract
An aerofoil has a main portion of aerofoil cross section and a trailing edge portion (12) movable with respect to the main portion by an actuating device (14), the trailing edge portion (12) is movable at or about an area/point of flexion A, the area/point of flexion A is located at or adjacent a pressure or suction surface of the aerofoil, the trailing edge portion (12) is connected to the main portion by first and second connection members (18, 20), the first connection member (18) extends inwardly away from the area/point of flexion A and has an end which is directly or indirectly connected to the main portion, the first and second connection members (18, 20) are flexible.
Claims28
An aerofoil having a main portion of aerofoil cross section and a trailing edge portion movable with respect to the main portion by an actuating device, the aerofoil defining an interior cavity, wherein the trailing edge portion is movable at or about an axis of rotation, the axis of rotation being located at a pressure or suction surface of the aerofoil, wherein the trailing edge portion is connected to the main portion by first and second connection members, the first connection member extending into the interior cavity away from the axis of rotation and having an end which is directly or indirectly connected to the main portion, wherein the first and second connection members are flexible and wherein the first connection member is configured to prevent the second connection member from buckling under stress when the trailing edge portion is exposed to vertical sheer force.
Dependencies are inferred from the claim text.