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Flight management computer lateral route recapture
| Details |
Inventors: Peckham, Roger D.; Rumbo, Jimmy Ray;
Assignee: Honeywell International Inc. (Morristown, NJ)
Primary Examiner: Nguyen; Thu V.
Assistant Examiner:
Attorney, Agent or Firm: Abeyta; Andrew A.
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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DETAILED DESCRIPTION The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention.
Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description.
Modern commercial aircraft have Flight Management Computers (FMCs) to assist the flight crew in flying and navigating the aircraft, and which allow the entry into a Control and Display Unit (CDU), which may be a Multifunction Control/Display Unit (MCDU), of certain waypoints defining the route along which the aircraft is to fly.
The present invention is an addition to existing Flight Management Computer functionality that is operable to select or define new waypoints to guide the aircraft back to its pre-planned route after a deviation from that route due to crew decision or Air Traffic Control instruction.
The invention determines which waypoint of the pre-planned waypoints should become the "active" waypoint for a return to route.
An active waypoint is the waypoint toward which the aircraft flies when the autopilot LNAV (Lateral Navigation) mode is selected.
It is also the first waypoint of the Legs page of the CDU.
FIG.
1 is a block diagram illustrating one embodiment of a flight management system in accordance with the present invention.
It should be appreciated that the functional blocks illustrated may be realized by any number of hardware, firmware, and/or software components configured to perform the specified functions.
For example, the present invention may employ various integrated circuit components such as memory elements, digital signal processing elements, look-up tables, databases, and the like, which may carry out a variety of functions under the control of one or more microprocessors or other control devices.
Such general techniques and components that are known to those skilled in the art are not described in detail herein
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Navigation and GPS 
