Abstract: A kite system having a kite (14) and a hauling rope (15) which extends between the kite (14) and a tow point (16). A marking holder (25) is disposed between the tow point (16) and the kite (14). The marking holder (25) is conceived for changing between an entrained state in relation to the hauling rope (15), and a free-running state in relation to the hauling rope (15). A fitting installation (31) initiates a changeover between the entrained state and the free-running state of the marking holder (25). The invention moreover relates to a method for operating a kite system.

Abstract: A method and a system for controlling the winding/unwinding of a rope portion onto/from a rotary drum, comprises the step of making available a rope which is at least partially wound onto a rotary drum, wherein the rope is guided from the rotary drum along a defined path as far as a hauling point, wherein a traction force acts on the rope beyond the hauling point. The method comprises unwinding or winding the rope by executing a rotation of the rotary drum, such that a defined rope portion is moved along the defined path; and determining the length of the defined rope portion in the region of the defined path. The method comprises determining an angle difference corresponding to the rotation of the rotary drum; and controlling the rotary drum for further winding/unwinding taking into account the length and the angle difference. A calibration in the region of the defined path during the use of the rotary drum provides a control for the rotary drum.