High-lift trailing edge flap system for an aircraft wing unit

A high-lift flap system for a rear portion of an aircraft wing, the high-lift flap system comprising:

• a trailing edge flap provided with a leading edge, a trailing edge, an upper surface and a lower surface, and a mechanism for actuating said trailing edge flap, allowing said trailing edge flap to assume either a stowed position for which said trailing edge flap is housed at least in part in the rear portion of the aircraft wing, such that the upper surface and lower surface of said trailing edge flap are continuously aerodynamic with respect to the upper surface and lower surface of said rear portion of the aircraft wing and that the trailing edge of said trailing edge flap forms a portion of a trailing edge of said rear portion of the aircraft wing, or at least one extended position for which said trailing edge flap is set back from the trailing edge of said rear portion of the aircraft wing and inclined relative to the rear portion of the aircraft wing, said mechanism for actuating said trailing edge flap including:
• one or more translation drive devices, which are housed at least in part in the rear portion of the aircraft wing and which comprise at least one driven movable element;
• and
• one or more rotation devices, which are housed in said trailing edge flap and are connected to the at least one driven movable element so as to be able to rotate said trailing edge flap relative to the at least one driven movable element, about an axis parallel to the leading edge of said trailing edge flap,
• wherein said rotation devices are formed by a rotating actuator, and a rotation shaft of the rotation actuator defines an axis of rotation of said trailing edge flap.