Patent ID: 8651430

Claim:
An aircraft aerodynamic body comprising: an aircraft airfoil having supporting structure, a spoiler supported on the aircraft airfoil, and an actuating device, wherein said spoiler is supported on the aircraft airfoil such that the spoiler is articulated about an axis extending transverse to an air flow direction and is adjustable relative to air flow, the spoiler comprising at least a front segment and a rear segment arranged behind one another with regards to the air flow direction, extending transverse to the air flow direction, connected to one another in an articulated fashion, and adjustable via the actuating device to different angles with regards to the air flow, wherein the actuating device comprises an actuator and a coupling mechanism, the actuator being coupled between the supporting structure of the aircraft airfoil and the front segment of the spoiler, the coupling mechanism comprising a toggle lever comprising a first lever rigidly connected to the rear segment and comprising a second lever, the second lever being coupled to the first lever at a first articulation and coupled to an abutment at a second articulation, the abutment being on the supporting structure or being formed by a base point of the actuator, wherein the toggle lever forms a step-up gear, the step-up gear causing the rear segment to be adjusted by a greater angle than the front segment when the spoiler is actuated by the actuator, wherein the aircraft airfoil comprises a main wing having a rear side with regards to an air flow direction and comprises a high-lift surface arranged on the rear side of the main wing, wherein said high-lift surface is extendable from a retracted position such that a gap conducting air from an underside of the main wing to an upper side of the high-lift surface is exposed between the main wing and the high-lift surface, and wherein the spoiler is arranged on an upper side of the main wing and is pivotable about an axis extending in a wingspan direction of the airfoil, wherein the spoiler is adjustable upward from the upper side of the main wing to reduce lift such that the rear segment is upwardly adjusted relative to the air flow by a greater angle than the front segment, and wherein the spoiler is adjustable downward from the upper side of the main wing into the gap to increase lift when the high-lift surface is extended such that the rear segment is downwardly adjusted relative to the air flow by a greater angle than the front segment.