METHOD AND DEVICE FOR DETERMINING THE OPTIMAL TURN DIRECTION OF AN AIRCRAFT
First Claim
1. A method for determining the optimal turn direction of an aircraft defined with respect to its movement, from among two directions, right and left, executed by a flight management system, the aircraft following a lateral trajectory so as to join an arrival straight oriented according to the desired direction of movement of the aircraft and charted by an angle of arrival, on the basis of a departure point and of an angle of departure defining a departure straight oriented in the direction of movement of the aircraft,the right or left direction of the optimal turn with respect to the movement of the aircraft being conventionally defined by a respectively positive or negative optimal turn sign,the said method comprising the steps:
- determining a conventional departure sign of the departure point with respect to the oriented arrival straight, the departure sign being positive or negative when the departure point is situated respectively on the left or on the right of the oriented arrival straight,determining a centred value of an angle of change of course equal to the difference between the angle of arrival and the angle of departure referred back between −
180° and
+180°
, the said centred value exhibiting a logical sign corresponding to the sign of the centred value of the angle of change of course, determining the sign of the optimal turn on the basis of the comparison between the departure sign and the logical sign, the said sign of the optimal turn defining the optimal turn direction.
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Accused Products
Abstract
A method determines the optimal turn direction of an aircraft among two directions, right and left, following a lateral trajectory to join an arrival straight charted by an angle of arrival, based on a departure point and angle of departure defining a departure straight oriented along movement of the aircraft, the direction defined by a respectively positive or negative optimal turn sign, comprising: determining a conventional departure sign of the departure point; determining a centred value of an angle of change of course equal to the difference between the angle of arrival and angle of departure referred back between −180° and +180°, the centred value exhibiting a logical sign corresponding to the centred value sign of the angle of change of course; determining the sign of the optimal turn based on comparison between the departure sign and the logical sign, the sign of the optimal turn defining optimal turn direction.
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Citations
17 Claims
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1. A method for determining the optimal turn direction of an aircraft defined with respect to its movement, from among two directions, right and left, executed by a flight management system, the aircraft following a lateral trajectory so as to join an arrival straight oriented according to the desired direction of movement of the aircraft and charted by an angle of arrival, on the basis of a departure point and of an angle of departure defining a departure straight oriented in the direction of movement of the aircraft,
the right or left direction of the optimal turn with respect to the movement of the aircraft being conventionally defined by a respectively positive or negative optimal turn sign, the said method comprising the steps: -
determining a conventional departure sign of the departure point with respect to the oriented arrival straight, the departure sign being positive or negative when the departure point is situated respectively on the left or on the right of the oriented arrival straight, determining a centred value of an angle of change of course equal to the difference between the angle of arrival and the angle of departure referred back between −
180° and
+180°
, the said centred value exhibiting a logical sign corresponding to the sign of the centred value of the angle of change of course, determining the sign of the optimal turn on the basis of the comparison between the departure sign and the logical sign, the said sign of the optimal turn defining the optimal turn direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17)
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15. A device for determining the optimal turn direction of an aircraft defined with respect to its movement, from among two directions, right and left, the aircraft following a lateral trajectory so as to join an arrival straight oriented according to the desired direction of movement of the aircraft and charted by an angle of arrival, on the basis of a departure point and of an angle of departure defining a departure straight oriented in the direction of movement of the aircraft,
the right or left direction of the optimal turn with respect to the movement of the aircraft being conventionally defined by a respectively positive or negative optimal turn sign, the said device comprising: -
a module for determining a conventional departure sign of the departure point with respect to the oriented arrival straight, the departure sign being positive or negative when the departure point is situated respectively on the left or on the right of the oriented arrival straight, a module for determining a centred value of an angle of change of course equal to the difference between the angle of arrival and the angle of departure referred back between −
180° and
+180°
, the said centred value exhibiting a logical sign corresponding to the sign of the centred value of the angle of change of course,a module for determining a sign of the optimal turn on the basis of the comparison between the departure sign and the logical sign, the said sign of the optimal turn defining the optimal turn direction. - View Dependent Claims (16)
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Specification