Method and device for adjusting the trajectory of an aircraft in a climb circuit
First Claim
1. A method of adjusting the trajectory of an aircraft flying a climb circuit, in a phase following a takeoff, the climb circuit comprising a substantially helical trajectory corresponding to a succession of portions of trajectories having the form of a racetrack, each racetrack being called a HOLD, the last HOLD, called the exit HOLD, having predefined geometric characteristics and comprising a notable point, denoted FIX_I/O and called the lock-on point, defined in latitude and in longitude allowing the aircraft to enter and to exit in the exit HOLD, the aircraft attaining a setpoint altitude of the climb circuit during the flight of the exit HOLD, the aircraft being able to exit the exit HOLD once the setpoint altitude has been attained and the lock-on point traversed and to begin a cruising flight, wherein a computer of the aircraft makes it possible to perform:
- a first step of computing the prediction of the position of the aircraft in the climb circuit when the setpoint altitude will be attained, the predicted point being denoted EPTA;
a second step of computing the remaining distance to be traveled, denoted DELTA, between the position of the aircraft in the exit HOLD when the setpoint altitude will be attained and the lock-on point of the climb circuit;
the check of a first condition making it possible to carry out a third step of adapting the form of the initial exit HOLD into a new exit HOLD, denoted optimized HOLD, so as to minimize the remaining distance to be traveled, the optimized HOLD passing through the lock-on point.
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Abstract
A method of adjusting the trajectory of an aircraft flying a climb circuit, of substantially helical form corresponding to a succession of racetracks, denoted HOLD, the last HOLD, called the exit HOLD, having predefined geometric characteristics and comprising a lock-on point, allowing the aircraft to enter and to exit in the HOLD, the aircraft attaining the setpoint altitude of the climb circuit during the flight of the exit HOLD, comprises at least three steps, including: a step of computing the prediction of the position of the aircraft when the setpoint altitude will be attained; a step of computing the remaining distance to be traveled, between the position of the aircraft when the setpoint altitude will be attained and the lock-on point; and a step making it possible to carry out an adaptation of the form of the exit HOLD so as to minimize the remaining distance to be traveled DELTA.
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Citations
12 Claims
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1. A method of adjusting the trajectory of an aircraft flying a climb circuit, in a phase following a takeoff, the climb circuit comprising a substantially helical trajectory corresponding to a succession of portions of trajectories having the form of a racetrack, each racetrack being called a HOLD, the last HOLD, called the exit HOLD, having predefined geometric characteristics and comprising a notable point, denoted FIX_I/O and called the lock-on point, defined in latitude and in longitude allowing the aircraft to enter and to exit in the exit HOLD, the aircraft attaining a setpoint altitude of the climb circuit during the flight of the exit HOLD, the aircraft being able to exit the exit HOLD once the setpoint altitude has been attained and the lock-on point traversed and to begin a cruising flight, wherein a computer of the aircraft makes it possible to perform:
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a first step of computing the prediction of the position of the aircraft in the climb circuit when the setpoint altitude will be attained, the predicted point being denoted EPTA; a second step of computing the remaining distance to be traveled, denoted DELTA, between the position of the aircraft in the exit HOLD when the setpoint altitude will be attained and the lock-on point of the climb circuit; the check of a first condition making it possible to carry out a third step of adapting the form of the initial exit HOLD into a new exit HOLD, denoted optimized HOLD, so as to minimize the remaining distance to be traveled, the optimized HOLD passing through the lock-on point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification