Patent ID: 7844373
Filing Date: 2010-11-30
Classification: G05D

Abstract:
1. A method for monitoring a following of a reference trajectory by an aircraft, wherein the values that flight parameters of the aircraft will have on completion of a time interval (ΔT) are extrapolated, the time interval (ΔT) corresponding to a duration less than a remaining duration of validity of a guidance instruction presently applied by the aircraft and during which the instruction remains unchanged, extrapolating the values comprising the steps of: measuring at the start of the time interval (ΔT) actual values of the flight parameters as well as external conditions on which performances of the aircraft depends; considering that instruction values of the flight parameters will remain constant throughout the time interval (ΔT) ; raising an alarm if extrapolated values of the flight parameters are different from theoretical values of the flight parameters deduced from the reference trajectory on completion of the time interval considered (ΔT) or if they are not compatible with actual performances of the aircraft having regard to the measured external conditions.