METHOD AND DEVICE FOR PROVIDING AUTOMATIC LOAD ALLEVIATION TO A HIGH LIFT SURFACE SYSTEM, IN PARTICULAR TO A LANDING FLAP SYSTEM, OF AN AIRCRAFT

摘要

Described are a method and a device for providing automatic load alleviation to a high lift surface system, in particular to a landing flap system, of an aircraft when a blockage occurs, wherein in response to a control signal emitted by a control device (31, 32, 35) at least one high lift surface (11, 12, 21), which is actuated by means of a local mechanical final control element (16, 26), is brought to a predetermined position by a central drive unit (13, 23) that is connected by way of a rotary shaft arrangement (15, 25) to the local final control element (16, 26) by means of generating a torque transmitted by the central drive unit (13, 23) to the rotary shaft arrangement (15, 25). According to the invention, if a signal is registered that indicates that there is a blockage within the high lift surface system, the torque transmitted by the central drive unit (13, 23) to the rotary shaft arrangement (15, 25) is automatically reduced to a predetermined low torque value, and the position of the high lift surface system is fixed.