Airplane wing, an airplane and a flap system

A flap system for an airplane wing comprising a main wing, the flap system comprising:

• a flap being configured to be arranged at a trailing edge of the main wing,
• supporting bearing elements being configured to be fixed to the main wing, and
• an elongate flap track member being configured to be connected to the main wing in such a manner that it can be moved substantially in its longitudinal direction and is guided by the supporting bearing elements relative to the main wing between a forward retracted position and a rearward extended position, the flap track member having a front end and a rear end,
• the flap being rotatably connected to the rear end of the flap track member in such a manner that the flap is rotatable about a rotation axis that extends substantially parallel to the trailing edge of the main wing, so that the flap moves together with the flap track member when the flap track member is moved and so that the flap is rotatable about the rotation axis mechanically independently of the movement and position of the flap track member,
• wherein the flap system further comprises an actuator system, the actuator system comprising:
• a first actuator being configured to be connected to the main wing and having an engagement member that engages the flap or the flap track member, wherein the first actuator is configured to move the flap together with the flap track member in said longitudinal direction so that the flap track member is moveable between its retracted position and its extended position, and
• a second actuator being connected to the flap track member so that the second actuator moves together with the flap track member when the flap track member is moved in said longitudinal direction by means of the first actuator, the second actuator having an engagement member that engages the flap, and wherein the second actuator is configured to rotate the flap about the rotation axis,
• wherein the first actuator and the second actuator are adapted to be controlled independently from each other.

An airplane wing, comprising:

• a main wing having a trailing edge,
• a flap system, the flap system comprising:
• a flap at the trailing edge of the main wing,
• supporting bearing elements being fixed to the main wing, and
• an elongate flap track member being connected to the main wing in such a manner that the flap track member is movable substantially in its longitudinal direction and is guided by the supporting bearing elements relative to the main wing between a forward retracted position and a rearward extended position, the flap track member having a front end and a rear end,
• the flap being rotatably connected to the rear end of the flap track member in such a manner that the flap is rotatable about a rotation axis that extends substantially parallel to the trailing edge of the main wing, so that the flap moves together with the flap track member when the flap track member is moved and so that the flap is rotatable about the rotation axis mechanically independently of the movement and position of the flap track member,
• wherein the flap system further comprises an actuator system, the actuator system comprising:
• a first actuator being connected to the main wing and having an engagement member that engages the flap or the flap track member, wherein the first actuator is configured to move the flap together with the flap track member in said longitudinal direction so that the flap track member is moveable between its retracted position and its extended position, and
• a second actuator being connected to the flap track member so that the second actuator moves together with the flap track member when the flap track member is moved in said longitudinal direction by means of the first actuator, the second actuator having an engagement member that engages the flap, and wherein the second actuator is configured to rotate the flap about the rotation axis,
• wherein the rear spar comprises a passage opening through which the flap track member travels when the flap track member is moved between its retracted position and its extended position, and wherein the passage opening in the rear spar opens into a fluid-tight housing inside the main wing that is configured to receive the flap track member in its retracted position inside the main wing between the front spar, the rear spar and two adjacent wing ribs.