Method and system for assisting flight control of a low-flying aircraft
First Claim
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1. A method of aiding the piloting of an aircraft flying at low altitude, wherein the following operations are carried out in an automatic and repetitive manner:
- a) determining at least one avoidance trajectory, at least over a predetermined distance ahead of the aircraft, said avoidance trajectory corresponding to a low altitude lateral trajectory and exhibiting at least one lateral turn;
b) determining the profile of the terrain situated under this avoidance trajectory;
c) determining at least one first limit slope corresponding to a slope that the aircraft must fly so as to be able to overfly said terrain over the whole of said predetermined distance along said avoidance trajectory depending on said profile of the terrain; and
d) presenting to a pilot, on a viewing screen, at least one first characteristic sign which represents said first limit slope and which is associated with a slope scale, with which is also associated a symbol illustrating the ground speed vector of the aircraft.
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Abstract
A system determines a limit angle of climb corresponding to a climb angle of an aircraft for flying over the ground along an avoidance path and displays a characteristic sign representing the limit angle of climb on a display screen.
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Citations
31 Claims
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1. A method of aiding the piloting of an aircraft flying at low altitude, wherein the following operations are carried out in an automatic and repetitive manner:
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a) determining at least one avoidance trajectory, at least over a predetermined distance ahead of the aircraft, said avoidance trajectory corresponding to a low altitude lateral trajectory and exhibiting at least one lateral turn; b) determining the profile of the terrain situated under this avoidance trajectory; c) determining at least one first limit slope corresponding to a slope that the aircraft must fly so as to be able to overfly said terrain over the whole of said predetermined distance along said avoidance trajectory depending on said profile of the terrain; and d) presenting to a pilot, on a viewing screen, at least one first characteristic sign which represents said first limit slope and which is associated with a slope scale, with which is also associated a symbol illustrating the ground speed vector of the aircraft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 26)
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18. A system for aiding the piloting of an aircraft flying at low altitude, wherein it comprises:
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a first determining section that determines at least one avoidance trajectory, at least over a predetermined distance ahead of the aircraft, said avoidance trajectory corresponding to a low altitude lateral trajectory and exhibiting at least one lateral turn; a second determining section that determines the profile of the terrain situated under this avoidance trajectory; a third determining section that determines, depending on said profile of the terrain, at least one first limit slope corresponding to a slope that the aircraft must fly so as to be able to overfly said terrain over the whole of said predetermined distance along said avoidance trajectory; and a display that presents, on a viewing screen, at least one first characteristic sign which represents said first limit slope and which is associated with a slope scale, with which is also associated a symbol illustrating the ground speed vector of the aircraft. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 27)
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28. A method of aiding the piloting of an aircraft flying at low altitude, wherein the following operations are carried out in an automatic and repetitive manner:
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a) at least one avoidance trajectory is determined, at least over a predetermined distance ahead of the aircraft, said avoidance trajectory corresponding to a low altitude lateral trajectory and exhibiting at least one lateral turn; b) the profile of the terrain situated under this avoidance trajectory is determined; c) at least one first limit slope corresponding to a slope that the aircraft must fly so as to be able to overfly said terrain over the whole of said predetermined distance along said avoidance trajectory is determined depending on said profile of the terrain; and d) a pilot is presented, on a viewing screen, with at least one first characteristic sign which represents said first limit slope and which is associated with a slope scale, with which is also associated a symbol illustrating the ground speed vector of the aircraft, wherein; said first limit slope corresponds to a minimum slope that the aircraft must fly so as to be able to overfly said terrain over the whole of said predetermined distance along said avoidance trajectory, independently of the performance of said aircraft, in step c), at least one second limit slope corresponding to a maximum slope at which the aircraft flies is moreover determined depending on predetermined flight conditions and actual performance of said aircraft, and in step d), at least one second characteristic sign which represents said second limit slope and which is also associated with said slope scale is presented on the viewing screen. - View Dependent Claims (30, 31)
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29. A method of aiding the piloting of an aircraft flying at low altitude, wherein the following operations are carried out in an automatic and repetitive manner:
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a) at least one avoidance trajectory is determined, at least over a predetermined distance ahead of the aircraft, said avoidance trajectory corresponding to a low altitude lateral trajectory and exhibiting at least one lateral turn; b) the profile of the terrain situated under this avoidance trajectory is determined; c) at least one first limit slope corresponding to a slope that the aircraft must fly so as to be able to overfly said terrain over the whole of said predetermined distance along said avoidance trajectory is determined depending on said profile of the terrain; and d) a pilot is presented, on a viewing screen, with at least one first characteristic sign which represents said first limit slope and which is associated with a slope scale, with which is also associated a symbol illustrating the ground speed vector of the aircraft, wherein; said first limit slope corresponds to a maximum dive slope of the aircraft, at which the aircraft descends before applying a full back stick climb with maximum power so as to be able to overfly said terrain, and the first characteristic sign representing said first limit slope is suited to the profile of the terrain.
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Specification