System for determining a flight rest scenario for an aircraft crew

A method for determining an in-flight rest scenario for a crew of an aircraft, the crew comprising at least two pilots able to fly the aircraft during a flight of the aircraft, the method comprising:

• displaying an input acquisition window on a screen of a display device, comprising a plurality of graphical input acquisition areas, each graphical input acquisition area being associated to at least one flight context and constraints input,
• acquiring flight context and constraints inputs, the flight context and constraints inputs comprising at least one piloting constraint on piloting by the crew of the aircraft, a part of the piloting constraints being acquired by activating graphical elements, via a human/machine interface, displayed on the screen in each acquisition area and actioning, via the human/machine interface, a graphical trigger icon to cause the acquiring of the part of piloting constraints from the graphic acquisition areas of the window and to cause acquiring of another part of the piloting constraints by interrogating a computer memory and/or via sensors of the aircraft, the human/machine interface being configured to receive interactions of a user, the interactions being input by a keyboard, a mouse and/or a touch control device configured for detecting the position on a surface of the touch control device of one or more members;
• determining, in response to the actioning of the graphical trigger icon, at least one in-flight rest scenario for the crew from the acquired piloting constraints, the in-flight rest scenario being determined from at least one simulation by a biomathematical fatigue model, having at least one of the acquired piloting constraints as variables, the determining the at least one in-flight rest scenario including in response to at least one of the interactions via the human/machine interface with at least one of the graphical elements displayed on the input acquisition window:
• determining at least two candidate chronologies, each candidate chronology including at least one rest period being compatible with each piloting constraint and being assigned to one of the pilots, each candidate chronology further including, for each pilot, at least one duty period for the pilot, the two candidate chronologies extending over a same time frame of the flight of the aircraft,
• simulating and determining at least one fatigue level of each pilot, for each compatible candidate chronology, by the biomathematical model, and
• classify each compatible candidate chronology according to an order relationship established from the simulated fatigue levels;
• displaying a results windows on the screen of the display device, comprising a rest scenario graphical area including a graphical representation of the determined in-flight rest scenario determined for a cruise phase of flight, the graphical representation of the determined in-flight rest scenario comprising at least two timelines, one for each of the pilots, and at least one timescale arranged opposite the timelines, and a graphical representation of the at least one rest period of the compatible candidate chronology that has a best classification according to the order relationship being placed on at least one of the two timelines, the graphical representation of the determined in-flight rest scenario comprising, for each pilot, a graphical information representative of a starting time and/or a graphical information representative of an end time of the rest period assigned to the pilot placed on the respective timeline for the pilot displayed along a timescale indicating a time period of the flight;
• receiving an input by a user, via the human/machine interface, to modify at least part of the piloting constraints by an interaction of the user with at least one of the activated graphical elements displayed on the screen of the display device;
• and
• in response to the interaction of the user with at least one of the activated graphical elements displayed on the screen of the display device, modifying a position in time of at least one of the rest periods within at least one of the timelines by displaying the graphical information representative of the starting time and/or the graphical information representative of the end time of the rest period assigned to the pilot at a different position along the timescale.