Patent ID: 8657239

Claim:
A Krueger, or leading edge flap, deployable from a lower aerodynamic surface of an aircraft main wing element so as to form a slot between the Krueger and the main wing element when deployed, the deployed Krueger having a leading edge, a trailing edge and upper and lower aerodynamic surfaces extending between the leading edge and the trailing edge, and a flow deflector fixedly attached to or integrally formed with the Krueger, said flow deflector provides an effectively divergent flap profile thickness in the downstream direction at or adjacent the Krueger trailing edge so as to direct airflow away from the lower aerodynamic surface of the deployed Krueger towards an upper aerodynamic surface of the main wing element wherein a point on the flow deflector corresponding to a maximum height of the flow deflector is in a facing relation to a leading edge of the main wing element in said deployed Krueger position.