Aerodynamic surface assembly for aircraft

A set of aerodynamic surfaces for aircraft, comprising at least:

• one fixed aerodynamic surface delimited by two external walls which, at the rear, converge toward one another and between which a spar is positioned, said external walls and said spar delimiting a box section that is open to the rear and runs in the overall direction of the span of said fixed aerodynamic surface;
• a mobile flap, the front part of which is articulated about an axis of rotation with respect to said fixed aerodynamic surface and which extends said external walls, thereby forming a mobile trailing-edge part for said fixed aerodynamic surface;
• actuating means, housed in said box section and able to cause said mobile flap to rotate;
• a vane, positioned in that part of said box section that is free of said actuating means and on the opposite side of said axis of rotation to said flap, said vane rotating as one with said flap and running in the overall direction of the span of said fixed aerodynamic surface, said vane dividing said box section into two chambers at least substantially isolated from one another and each comprising one of said external walls;
• and
• in each external wall of said mobile flap, at least one pressure tapping able to place the corresponding chamber in pressure-wise communication with the aerodynamic flow over the corresponding external wall of said box section.