Means for controlling the boundary layer over an aerofoil body

Claim 1

A AEROFOIL BODY HAVING A SWEPT LEADING EDGE CONTAINING AN AIRFLOW ATTACHMENT LINE ALONG WHICH CONTAMINATION OF LAMINAR BOUNDARY LAYER FLOW IS CAUSED BY TURBULENT BOUNDARY LAYER FLOW ORIGINATING FROM A DISTURBANCE LOCATED AT A POINT ON OR ADJACENT TO THE ATTACHMENT LINE, MEANS POSITIONED ALONG THE LEADING EDGE AND IN THE PATH OF THE TURBULENT BOUNDARY LAYER TO PREVENT SPANWISE PROPAGATION OF THE TURBULENT BOUNDARY LAYER ALONG THE ATTACHMENT LINE, WHICH MEANS IS FAIRED CONTOUR SO AS TO PRESENT A SMOOTH OUTLINE FOR THE AIRFLOW OVER THE AEROFOIL BODY AND COMPRISES A FRONT FACING THE DISTURBANCE AND AN ASSOCIATED INCLINED SURFACE, WHICH FRONT IS INCLINED STEEPLY TO THE LEADING EDGE AND HAS A ROUNDED PORTION WHICH BLENDS SMOOTHLY AT ONE END INTO THE INCLINED SURFACE, THE OTHER END OF THE INCLINED SURFACE BLENDING SMOOTHLY INTO THE LEADING EDGE, THE FRONT PRESENTING A BLUFF SURFACE TO THE TURBULENT BOUNDARY LAYER AND BEING AT SUCH A DISTANCE FROM THE DISTURBANCE THAT THE HEIGHT OF THE FRONT IS GREATER THANT THE THICKNESS OF THE TURBULENT BOUNDARY LAYER AT THE FRONT SO AS TO CREATE A TRANSITIONAL REGION OF FLOW WHEREBY A LAMINAR BOUNDARY LAYER IS ESTABLISHED ALONG THE INCLINED SURFACAE AND THE ATTACHMENT LINE OF THE LEADING EDGE ADJACENT THE INCLINED SURFACE.