| 摘要 |
This system accompanies the "Avoid terrain" type alarms indicating to the pilot that he has passed the limit-point of success of a standard vertical avoidance maneuver either with complementary indications such as the azimuth sectors suitable for a disengagement maneuver or a predefined disengagement path, or an automatic engagement of a predefined avoidance path. To determine the limit-point, it monitors a penetration of a model of the terrain being flown over into a first protection volume ( 1 ) linked to the aircraft and configured so as to model a standard vertical avoidance maneuver path executed without delay, said path being predefined according to the type of aircraft, its weight and its inertia, and, for the determination of the disengagement azimuth sectors, an analysis of the penetrations of the model of the terrain being flown over into a second protection volume ( 2 ) with large azimuth aperture, linked to the aircraft and configured so as to contain the limit-point protection volume ( 1 ) and, for the various azimuths covered, paths of a composite maneuver beginning with change-of-heading maneuvers with which to reach the azimuth concerned and continuing with the standard terrain vertical avoidance maneuver, said paths being, over their parts corresponding to the standard vertical avoidance maneuver, predefined according to the type of aircraft, its weight and its inertia.
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