Wind turbine blade with cambering flaps controlled by surface pressure changes

A wind turbine having blades wherein at least one of the blades consist of a first component (11) having an aerodynamic profile with a leading edge (5), a trailing edge (7), and suction and pressure sides between the leading edge (5) and the trailing edge (7) and a second component (13) attached to the end of leading edge (5) and/or to the trailing edge (7) of the first component (11) in at least a part of the blade, wherein:

• the second component (13) consist of one or several upwards and/or downwards deflectable flaps (15, 15′) that allows changing the flow over the blade;
• the deflectable flaps (15, 15′) consist of suction and pressure sides;
• each of said deflectable flaps (15, 15′) has means for deflecting which comprise a scaling device (21) that, depending on the pressure detected at a predetermined location (17), to which the deflectable flap is connected by means of a duct (19), generates an actuating force or torque proportional to the changes in the wind pressure at said location (17).