An aircraft route management system operable in a simulation mode, or in both the simulation mode and a control mode, the system comprising: - an input interface configured to allow input of a route with a plurality of waypoints, said waypoints defining segments, each segment associated with an activity to be performed by the aircraft in the segment, said activity being selected from a plurality of possible activity types, said activity types comprising one or more of taking-off, travelling a leg, holding above a waypoint, returning to base, climbing, exercising, descending, approaching, performing a pattern, and an energy consumption mode depending on a percentage of a maximum energy consumption, an optimized energy consumption or an operating power of an engine of the aircraft, said operating power of the engine itself depending on a targeted travel speed; - if the aircraft route management system is operable in the control mode, one or more sensors whose output is used in said control mode; - one or more sensor emulators whose output is used in said simulation mode, a sensor emulator being a computer implemented interface allowing a user to vary a value of a parameter, - said one or more sensors and one or more sensor emulators being configured to provide one or more of a position or an estimate of a position of the aircraft relative to the route, one or more of an amount of remaining energy or an estimate of an amount of remaining energy and measurements or estimates of variables impacting energy consumption; - a calculation unit configured to: ∘ associate a predicted energy consumption to each segment of the route, based on aircraft features, segment features and an energy consumption mode associated by a user with the segment; ∘ compute a predicted total energy consumption for the route; ∘ adjust the predicted energy consumption associated to each segment of the route and the total energy consumption for the route based on outputs from the one or more sensors or sensor emulators; - a display unit configured to present outputs of the calculation unit and outputs of some of the one or more sensors or sensor emulators; wherein the display unit is further configured to graphically present the predicted total energy consumption for the route by segment, and wherein, upon a variation of a parameter, the calculation unit is further configured to simulate an impact of the variation of the parameter on the predicted total energy consumption for the route by segment, and the display unit is further configured to graphically present the simulated predicted total energy consumption for the route by segment. - an input interface configured to allow input of a route with a plurality of waypoints, said waypoints defining segments, each segment associated with an activity to be performed by the aircraft in the segment, said activity being selected from a plurality of possible activity types, said activity types comprising one or more of taking-off, travelling a leg, holding above a waypoint, returning to base, climbing, exercising, descending, approaching, performing a pattern, and an energy consumption mode depending on a percentage of a maximum energy consumption, an optimized energy consumption or an operating power of an engine of the aircraft, said operating power of the engine itself depending on a targeted travel speed; - if the aircraft route management system is operable in the control mode, one or more sensors whose output is used in said control mode; - one or more sensor emulators whose output is used in said simulation mode, a sensor emulator being a computer implemented interface allowing a user to vary a value of a parameter, - said one or more sensors and one or more sensor emulators being configured to provide one or more of a position or an estimate of a position of the aircraft relative to the route, one or more of an amount of remaining energy or an estimate of an amount of remaining energy and measurements or estimates of variables impacting energy consumption; - a calculation unit configured to: ∘ associate a predicted energy consumption to each segment of the route, based on aircraft features, segment features and an energy consumption mode associated by a user with the segment; ∘ compute a predicted total energy consumption for the route; ∘ adjust the predicted energy consumption associated to each segment of the route and the total energy consumption for the route based on outputs from the one or more sensors or sensor emulators; ∘ associate a predicted energy consumption to each segment of the route, based on aircraft features, segment features and an energy consumption mode associated by a user with the segment; ∘ compute a predicted total energy consumption for the route; ∘ adjust the predicted energy consumption associated to each segment of the route and the total energy consumption for the route based on outputs from the one or more sensors or sensor emulators; - a display unit configured to present outputs of the calculation unit and outputs of some of the one or more sensors or sensor emulators;