Method and system for preventing an aircraft from penetrating into a dangerous trailing vortex area of a vortex generator

The invention relates to methods and devices for aircraft's safe operation and is embodied in the form of a method and system for informing a user, for example an aircraft crew and/or a flight controller, on the probable penetration of the aircraft into dangerous areas of the vortex shedding of vortex generators which are located near the aircraft at a forecast time when the aircraft passes through a simulated control plane situated at a preventive distance in the direction of motion of the aircraft, said distance being calculated on a basis of a sufficient forecast period so that the aircraft carries out a flight evasive manoeuvre. The preventive system defines the trajectory and intensity of the vortex shedding of the vortex generators, the co-ordinates of intersecting points of the vortex sheddings with a control plane, the geometric parameters of the dangerous areas thereof ( 26, 27 ) according to danger criteria specified by a user, forms a warning area ( 28 ) in said control plane, an area of the forecast positions of the aircraft ( 25 ) and dangerous vortex shedding areas ( 26, 27 ) at a forecast time, follows up the events of crossing the warning area ( 28 ) and/or the area of the aircraft forecast positions ( 25 ) associated with the dangerous vortex shedding areas ( 26, 27 ) and draws attention of the user to said event with the aid of display devices ( 16, 17 ) and a visualisation device ( 18 ).