Method for determining an optimized trajectory to be followed by an aircraft, associated control method, computer program product and systems

A determining system of an aircraft configured to, in communication with a control system of a remote station, determine an optimized trajectory to be followed by the aircraft, the determining system being configured to:

• acquire at least one constraint relative to at least one parameter of the trajectory to be followed, the at least one constraint being received from the control system by a transceiver forming a digital data transmission link between the aircraft and the remote station, wherein the at least one constraint is a function of current air traffic and comprises a maximum or minimum value of the at least one parameter of the trajectory to be followed;
• calculate a desired trajectory as a function of the at least one constraint, the desired trajectory being defined by the at least one parameter;
• transmit the desired trajectory to the remote station by the transceiver;
• acquire an instruction comprising an authorization to follow the desired trajectory or a refusal of the desired trajectory, the instruction being sent by the remote station and being received by the transceiver;
• follow the desired trajectory when the instruction comprises the authorization to follow this trajectory, and
• calculate a new desired trajectory when the instruction comprises the refusal of the desired trajectory, the transmission and the acquisition of the instruction then being repeated for the new desired trajectory, wherein said calculation of the new desired trajectory is carried out as a function of updated constraints based on the current air traffic.

A control method for controlling a trajectory of an aircraft, the control method being carried out by a control system of a remote station in communication with a determining system of the aircraft, the control method comprising:

• a determination of at least one constraint relative to at least one parameter of the trajectory of the aircraft as a function of current air traffic, the at least one constraint comprising a maximum or minimum value of the at least one parameter of the trajectory of the aircraft;
• a transmission of the at least one constraint to the aircraft over a digital data transmission link between the aircraft and the remote station;
• an acquisition of a desired trajectory of the aircraft from the determining system of the aircraft as a function of the constraint;
• a verification of compliance of the desired trajectory with a plurality of constraints updated based on the current air traffic;
• a transmission of an instruction to the aircraft, the instruction comprising an authorization to follow the desired trajectory or a refusal of the desired trajectory, as a function of the compliance of the desired trajectory;
• a control of the following of the desired trajectory when the instruction comprises the authorization to follow this trajectory, and
• a calculation of a new desired trajectory when the instruction comprises the refusal of the desired trajectory, the transmission of the instruction and the control then being performed for the new desired trajectory, wherein said calculation of the new desired trajectory is carried out as a function of updated constraints based on the current air traffic.

A control system of a remote station in communication with a determining system of an aircraft, the control system configured to:

• determine at least one constraint relative to at least one parameter of a trajectory of the aircraft as a function of current air traffic, the at least one constraint comprising a maximum or minimum value of the at least one parameter of the trajectory of the aircraft;
• transmit the at least one constraint to the aircraft over a digital data transmission link between the aircraft and the remote station;
• acquire a desired trajectory of the aircraft from the determining system of the aircraft as a function of the constraint;
• verify compliance of the desired trajectory with a plurality of constraints updated based on the current air traffic;
• transmit an instruction to the aircraft, the instruction comprising an authorization to follow the desired trajectory or a refusal of the desired trajectory, as a function of the compliance of the desired trajectory;
• control the following of the desired trajectory when the instruction comprises the authorization to follow this trajectory, and
• calculate a new desired trajectory when the instruction comprises the refusal of the desired trajectory, the transmission of the instruction and the control then being performed for the new desired trajectory, wherein said calculation of the new desired trajectory is carried out as a function of updated constraints based on the current air traffic.