Flight management computer lateral route recapture
First Claim
1. In an aircraft flight management system having a flight management computer that stores a pre-planned lateral route of flight of the aircraft comprising a plurality of successive waypoints to be overflown, a method providing a return-to-path maneuver in the event that the aircraft deviates from the pre-planned route, comprising:
- if the aircraft is inside a preset boundary of the pre-planned lateral route;
choosing either (i) a first waypoint from the waypoints of the pre-planned lateral route as a new candidate active waypoint if the aircraft is on the TO side of the wayline of the first waypoint or (ii) a second waypoint from the waypoints of the pre-planned lateral route as a new candidate active waypoint, the second waypoint following after the first waypoint, if the aircraft is between the wayline of the first waypoint and the wayline of the second waypoint, andcalculating a return-to-path route to overfly the new candidate active waypoint if the aircraft is in a capture zone.
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Accused Products
Abstract
An aircraft flight management system having a flight management computer that stores a pre-planned lateral route of flight of the aircraft comprising a plurality of successive waypoints to be overflown, the next proximate waypoint being an active waypoint, a method providing a return-to-path maneuver in the event that the aircraft deviates from the pre-planned route, including selecting a new active waypoint, calculating a return-to-path route to overfly the new active waypoint, and selectably accepting the calculated return-to-path route.
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Citations
16 Claims
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1. In an aircraft flight management system having a flight management computer that stores a pre-planned lateral route of flight of the aircraft comprising a plurality of successive waypoints to be overflown, a method providing a return-to-path maneuver in the event that the aircraft deviates from the pre-planned route, comprising:
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if the aircraft is inside a preset boundary of the pre-planned lateral route; choosing either (i) a first waypoint from the waypoints of the pre-planned lateral route as a new candidate active waypoint if the aircraft is on the TO side of the wayline of the first waypoint or (ii) a second waypoint from the waypoints of the pre-planned lateral route as a new candidate active waypoint, the second waypoint following after the first waypoint, if the aircraft is between the wayline of the first waypoint and the wayline of the second waypoint, and calculating a return-to-path route to overfly the new candidate active waypoint if the aircraft is in a capture zone. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An aircraft flight management system comprising:
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a preplanned lateral route of flight of the aircraft comprising a plurality of flight legs connected by waypoints; a means for selecting a first waypoint from the waypoints of the preplanned lateral route of flight as a new candidate active waypoint if the aircraft is approaching a first wayline associated with the first waypoint and the aircraft is inside a predetermined distance from the pre-planned lateral route; a means for selecting a second way point from the waypoints of the preplanned lateral route of flight as the new candidate active waypoint, the second waypoint immediately downpath from the first waypoint, if the aircraft is between the waylines of the first waypoint and the second waypoint and the aircraft is inside a predetermined distance from the pre-planned lateral route; and a means for calculating a return-to-path route that overlies the new candidate active waypoint if the aircraft is inside a capture zone. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification