Patent ID: 8353483

Claim:
An aircraft wing comprising a leading-edge slat, the slat including: (i) a main body portion the front of which forms an aerodynamic surface exposed to free-stream airflow and the rear of which is shaped to complement the part of the wing behind the slat main body portion, and (ii) a slat extension arranged at a spanwise end of the main body portion and projecting therefrom, the front of which slat extension forms an aerodynamic surface exposed to the free-stream airflow and the rear of which slat extension is shaped to complement the part of the wing behind the slat extension, wherein the slat extension is fixed relative to the main body portion; wherein the leading-edge profile of the aerodynamic surface of the slat extension is contiguous with at least part of the leading edge profile of the aerodynamic surface of the main body portion, and wherein the rear of the slat extension is positioned forward of the rear of the slat main body portion such that the cross-sectional area of the slat extension, in a first vertical plane containing the aircraft wing chord, is less than the cross-sectional area of the main body portion, in a second vertical plane containing the aircraft wing chord.