Patent ID: 8145365
Filing Date: 2012-03-27
Classification: G05D

Abstract:
1. Calculation method for an aircraft navigation aid system making it possible to maintain a vertical safety margin with an obstruction profile, wherein the method comprises the following steps: calculation of an obstruction altitude profile, calculation of a vertical safety margin with respect to the obstruction profile, calculation of a plurality of vertical safety trajectories and of the respective flight setpoints for the aircraft to execute the trajectories, at least one safety trajectory being a climb-in-altitude flight phase of a configured duration comprising, in succession, a first flight phase approaching the climb phase of a duration predefined in the calculation system and a second rectilinear climb-in-altitude flight phase, selection of the flight setpoints making it possible to maintain the aircraft as close as possible to the obstruction profile while maintaining between the aircraft and the obstruction profile at least the vertical safety margin, filtering of the flight setpoint values so that the variation of the values of the setpoints does not exceed a variation difference in a predefined duration.