Abstract: The device (1) comprises means (15) for computing deviations of a flight parameter with respect to a reference flight plan, by taking account of predictions, respectively for a plurality of flight data representing different origins, and display means (5) for simultaneously presenting the set of said deviations on a screen (6) of the flight deck of the aircraft, each time indicating the corresponding origin.

Abstract: The invention relates to a process and an on-board system for evaluating flight strategies aboard an aircraft, linked with a flight plan (13) of the aircraft, including: calculation means (5) for determining relations between the flight parameters including parameters of time, of fuel quantity, of altitude and of speed, interface means (9) for providing at least one envelope of values (25a-25d) representative of a domain of definition of a plurality of flight strategies, interface means (9) for providing at least one determined strategy defined by determined values assumed by the flight parameters at a reference point, interface means (9) to allow the selection and setting of the value of a first parameter among said flight parameters, generating and supplying another envelope of values allowing exploration of another plurality of possible strategies, and interface means (9) to allow the selection and setting of the value of a second parameter, generating and supplying another determined strategy.

Abstract: An evaluation method and an evaluation system onboard an aircraft in communication with a flight management system to access a flight plan stored in memory of the flight management system, where the flight plan defines a cruising level and a minimum fuel reserve to destination objective. The evaluation system comprises circuitry to calculate a fuel consumption deviation between flight at a selected cruising altitude level and flight at an altitude level initially planned by the flight plan, where the selected altitude level is lower than the altitude level initially planned, and to determine a climb limit point from the selected cruising altitude level as a function of the fuel consumption deviation and the minimum fuel reserve objective, where the climb limit point represents the last climb point respecting the minimum fuel reserve to destination objective; and interface circuitry to provide the climb limit point and anticipative information concerning the climb limit point.

Abstract: The device (1) comprises means (15) for computing deviations of a flight parameter with respect to a reference flight plan, by taking account of predictions, respectively for a plurality of flight data representing different origins, and display means (5) for simultaneously presenting the set of said deviations on a screen (6) of the flight deck of the aircraft, each time indicating the corresponding origin.

Abstract: The invention relates to a method and an evaluation system onboard an aircraft connected with a flight plan (13) defining a cruising level and a minimum fuel reserve to destination objective, including: calculating means (5) for calculating a fuel consumption deviation between flight at a selected cruising altitude level (15) and flight at an altitude level initially planned (17) by the flight plan, said selected altitude level (15) being lower than the altitude level initially planned (17), calculating means (5) for determining a climb limit point (19) from said selected cruising altitude level (15) as a function of said fuel consumption deviation and said minimum fuel reserve objective, said climb limit point (19) representing the last climb point respecting said minimum fuel reserve to destination objective, and interface means (9) for providing said climb limit point (19) and anticipative information (21) concerning said climb limit point.

Abstract: The invention relates to a process and an on-board system for evaluating flight strategies aboard an aircraft, linked with a flight plan (13) of the aircraft, including: calculation means (5) for determining relations between the flight parameters including parameters of time, of fuel quantity, of altitude and of speed, interface means (9) for providing at least one envelope of values (25a-25d) representative of a domain of definition of a plurality of flight strategies, interface means (9) for providing at least one determined strategy defined by determined values assumed by the flight parameters at a reference point, interface means (9) to allow the selection and setting of the value of a first parameter among said flight parameters, generating and supplying another envelope of values allowing exploration of another plurality of possible strategies, and interface means (9) to allow the selection and setting of the value of a second parameter, generating and supplying another determined strategy.