Aircraft wing with a wing tip device

An aircraft comprising a wing having a fixed wing portion and a wing tip device that is rotatably attached about a hinge axis to the fixed wing portion at an outboard end, wherein the hinge axis is orientated at an acute angle H relative to an aircraft longitudinal axis X;

• the wing further comprising at least one wing fold actuation and restraining mechanism configured to actuate the wing tip device such that it rotates relative to the fixed wing portion about the hinge axis to predetermined wing fold angles θ corresponding to one of at least three commanded positions and to restrain movement of the wing tip device relative to the fixed wing portion at each commanded position
• wherein a first position corresponds to high-speed flying configuration of the aircraft for which the wing tip device is rotated about the hinge axis to a predetermined wing fold angle θ and then held such that the upper and lower surfaces of the wing tip device are continuations of upper and lower surfaces of the fixed wing portion, and the wing tip device comprises a first incidence angle ε1;
• wherein a second position corresponds to a ground configuration of the aircraft for use during ground-based operations, for which the wing tip device is rotated about the hinge axis to a predetermined wing fold angle θ and then held such that a span of the wing is reduced the most;
• wherein a third position corresponds to a low speed flying configuration of the aircraft for which the wing tip device is rotated about the hinge axis to a predetermined wing fold angle θ and then held such that the wing tip device comprises a second incidence angle ε2 that is less than the first incidence angle ε1,
• wherein each of the at least three commanded positions correspond to commanded positions of wing high lift devices.