| 摘要 |
An aerofoil has a body, and at least one flow control device, the flow control device including a passage within the body of the aerofoil, and a passage outlet at an upper aerofoil surface of the aerofoil, whereby in use, air from the passage passes through the passage outlet to affect airflow over th e upper surface of the aerofoil over at least a range of incidence angles, wherein the passage outlet is provided by an outlet fitting which is secured relativ e to the upper surface of the aerofoil, the outlet fitting including a surface pa rt which lies contiguously with the surrounding upper aerofoil surface so there is no or only a minimal discontinuity. where the surface part and the surroundi ng upper aerofoil surface interface, the surface part of the fitting further including an opening which communicates with the passage within the body of the aerofoil.
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