| 摘要 |
An aircraft wing 10 comprises a fixed wing part 32 for horizontal flight, and a movable wing part 26 having an aerofoil blade 28 at or adjacent to a distal end of the fixed wing part 32 for vertical take-off and landing. A drive element 46 drives the aerofoil blade 28 of the movable wing part 26 on a rapidly repeatable lilt-generation cycle within a plane of the fixed wing part 32. The aerofoil blade 28 of the movable wing part 26, during a lift-generating condition of the lift generation cycle, is extendable from the fixed wing part 32 by the drive element 46 and movable towards a leading edge 56 of the fixed wing part 32. During a resetting condition of the lift-generation cycle the movable wing part is retractable into the fixed wing part 32 by the drive element 46 and movable towards a trailing edge 58 of the fixed wing part 32. With such forward movement of the extended blade 28, there is airflow over its aerofoil surface, thus generating lift. This operation would be used when an aircraft 12 is flying with little or no forward speed, otherwise the blades 28 remain retracted in the fixed wing part 32 and the aircraft 12 flies conventionally. Thus the design allows high speed flight of a conventional heavier-than-air aircraft 12 with one or two sets of such wings 10, and provides high-speed vertical take-off and landing (HS-VTOL) and extended hover capability. |
