Method and system for computing a flight path vector

A method for computing a flight path vector of an aircraft, the method being implemented by a computation system on board the aircraft and comprising electronic circuitry, the method comprising:

• applying a low-pass filter to inertial data originating from at least one inertial sensor on board the aircraft and representing an actual flight path vector of the aircraft;
• computing an estimate of a variation in the flight path vector as a function of commands provided by a pilot of the aircraft via a control stick;
• computing an estimate of the flight path vector by integrating the estimate of the variation in the flight path vector;
• applying a high-pass filter to the estimate of the flight path vector;
• and
• acquiring a resulting signal by adding an output signal from the low-pass filter and an output signal from the high-pass filter, the signal resulting from the addition being intended to be displayed, with a display system included in the aircraft, as a flight path vector of the aircraft.