Method of determining an aircraft trajectory with a noise abatement procedure during takeoff following a total pseudo-slope setpoint, associated method, system and aircraft

An aircraft, comprising a flight management system configured to follow a trajectory with a noise abatement departure procedure or configured to guide a pilot along a trajectory with a noise abatement departure procedure, the trajectory comprising:

• at least one initial trajectory segment made at a maximum thrust up to a predefined minimum altitude;
• at least one trajectory segment with a noise abatement with a reduced thrust compared to the maximum thrust to reach a setpoint speed, the at least one trajectory segment with a noise abatement being defined by at least one total pseudo-slope setpoint ensuring the reduced thrust or/and the trajectory comprising:
• an initial trajectory segment performed at maximum thrust up to a predefined minimum altitude;
• and
• at least one trajectory segment with a noise abatement with a reduced thrust compared to maximum thrust to reach a target speed,
• the flight management system being configured to maintain at least one floor slope to be observed by the aircraft in correspondence with the or each trajectory segment with a noise abatement.

A method to determine a trajectory of an aircraft with a noise abatement departure procedure, the determination method being implemented using a determination system, the method comprising:

• determining characteristics of an initial trajectory segment performed at a maximum thrust up to a predefined minimum altitude;
• determining characteristics of at least one trajectory segment with a noise abatement with a reduced thrust compared to maximum thrust to reach a target speed;
• and
• defining at least one floor slope to be observed by the aircraft in correspondence with the or each trajectory segment with a noise abatement.

A method to pilot an aircraft following a trajectory of an aircraft with a noise abatement departure procedure, comprising:

• following an initial trajectory segment performed at a maximum thrust up to a predefined minimum altitude;
• following at least one trajectory segment with a noise abatement with a reduced thrust compared to the maximum thrust to reach a target speed;
• and
• maintaining a slope of the aircraft above a floor slope to be observed by the aircraft defined in correspondence with the or each trajectory segment with a noise abatement with a reduced thrust, during an implementation of the or each trajectory segment with a noise abatement.

A system for determining a trajectory of an aircraft with a noise abatement departure procedure, the system being configured to

• determine characteristics of an initial trajectory segment performed at maximum thrust up to a predefined minimum altitude;
• determine characteristics of at least one trajectory segment with a noise abatement with reduced thrust compared to maximum thrust to reach a target speed;
• and
• define at least one floor slope to be observed by the aircraft in correspondence with the or each trajectory segment with a noise abatement.