Patent ID: 8280622
Filing Date: 2012-10-02
Classification: G01C,G05D,G08G

Abstract:
1. A system onboard an aircraft, for preventing collisions with a terrain based on a risk of collision with the terrain after a predetermined forecast delay to the penetration of a cartographic representation of the terrain being flown over, stored in a database accessible to the aircraft, into a protection volume linked to the aircraft located relative to the terrain being flown over by means of onboard locating equipment, oriented in the direction of progress of the aircraft and configured so as to model a standard terrain vertical avoidance maneuver path engaged over the forecast delay based on the path followed by the aircraft predicted from flight information delivered by aircraft flight equipment, assuming that the aircraft maintains a current speed vector thereof with the same trend, if the aircraft is in the process of changing, said system comprising: means for detecting a limit-point of success of a standard terrain vertical avoidance maneuver likening the crossing of the limit-point by the aircraft to the penetration of the terrain into a first protection volume linked to the aircraft and configured so as to model a standard vertical avoidance maneuver path executed without notable delay, said path being predefined according to the aircraft type; means for determining azimuth disengagement sectors, either side of the direction of progress of the aircraft, suitable for the success of a standard terrain vertical avoidance maneuver, said means for determining azimuth disengagement sectors including means for signaling the crossing of the limit-point of success of the standard terrain vertical avoidance maneuver; and means for signaling the azimuth disengagement sectors.