System for determining an operational state of an aircrew according to an adaptive task plan and associated method

A manned or unmanned aircraft aircrew operational state determination system, according to an adaptive task plan, the system comprising a computer,

• the computer being configured to define, at each moment during a mission of the aircraft, a list of tasks to be carried out by at least one crew member as a function of updated mission objectives, and of an instantaneous mission context determined from measurements of a mission environment;
• the computer being configured to determine for the at least one crew member at least one baseline theoretical crew member cognitive state according to the task list assigned to the at least one crew member, using a resource model;
• the computer being configured to determine a fitness indicator of the at least one crew member to perform the task(s) of the task list assigned to the at least one crew member, from an actual crew member cognitive state determined on the basis of physiological measurements on the at least one crew member and of measurements of the at least one crew member's interaction with the aircraft, and from the baseline theoretical crew member cognitive state determined by the computer.