Real-time adaptive speed scheduler

Patent metadata

Field	Value
Publication number	US-10013236-B2
Application number	US-201313898507-A
Country	US
Kind code	B2
Filing date	May 21, 2013
Priority date	Mar 6, 2013
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A real-time adaptive speed scheduler that optimizes the control of an aircraft's speed and speed mode through the introduction of an advisory providing an optimized speed schedule for improved fuel efficiency and aircraft predictability. This system can also be deployed to improve flight efficiency and aircraft predictability in situations where time needs to be gained or lost, or air traffic needs to be sequenced. The real-time adaptive speed scheduler disclosed herein provides a datalink solution for loading directly into an aircraft's flight management system, for operation and display on a mobile device, as an advisory to an air traffic controller for instruction to the aircraft as a voice command, any authorized subscriber, and/or as an advisory to a dispatcher at an airline operations center.

First claim

The invention claimed is:

1. A method for controlling a speed of an aircraft to conform to a speed schedule, comprising:
(a) obtaining information concerning a flight trajectory of an aircraft, the information comprising a current location of the aircraft, a current speed schedule of the aircraft, flight parameters, aircraft performance data, and one or more economic constraints applicable to one or more economic constraint waypoints along the flight trajectory;
(b) calculating estimated values for one or more economic factors in achieving an optimization criterion, the economic factors corresponding to the one or more economic constraints applicable to the one or more economic constraint waypoints along the flight trajectory;
(c) calculating a respective difference between each economic constraint applicable to the one or more economic constraint waypoints and the respective estimated value for the corresponding economic factor;
(e) responsive to a determination that a respective difference is greater than a configurable tolerance, adding a new economic constraint waypoint along the flight trajectory having a geospatial location with a corresponding economic constraint;
(f) constructing a new speed schedule utilizing the new economic constraint waypoint and its corresponding economic constraint to eliminate or reduce the respective difference to be within the configurable tolerance;
(g) transmitting a speed schedule advisory that comprises the new speed schedule to an aircraft having a flight management computer that is configured to accept entry of new economic constraint waypoints; and
(h) controlling the aircraft to fly along a flight trajectory segment at speeds and in speed modes in accordance with the new speed schedule,
wherein steps (a) through (f) are performed by a computer at a ground station.

2. The method as recited in claim 1 , wherein said economic constraints comprise one or more or a combination of the following: a time constraint, a fuel constraint and a cost constraint.

3. The method as recited in claim 1 , wherein said speed schedule advisory further comprises an instruction to revert to an economy speed mode following one of the economic constraint waypoints.

4. The method as recited in claim 1 , wherein the new speed schedule is optimized to minimize one or more of cost, time and fuel.

5. The method as recited in claim 1 , wherein said speed schedule advisory is communicated to said aircraft compliant with a protocol and data formats of at least one of internet protocol, user-specified protocol or datalink communication addressed to said aircraft.

6. The method as recited in claim 1 , wherein the speed schedule advisory is transmitted to the aircraft in compliance with a protocol and data formats of at least one of internet protocol, user-specified protocol or datalink communication addressed to the aircraft.

7. A method for controlling a speed of an aircraft to conform to a speed schedule, comprising:
obtaining or calculating information concerning at least one economic constraint trajectory segment of a flight trajectory stored in a flight management system of an aircraft that is flying in an economy speed mode, said information comprising a current location of said aircraft, a current speed schedule of said aircraft, flight parameters, aircraft performance data, current and forecast weather conditions along said flight trajectory, and one or more economic constraints applicable to a first economic constraint waypoint of said flight trajectory;
for said first economic constraint waypoint, calculating estimated values for one or more economic factors corresponding to said one or more economic constraints applicable to said first economic constraint waypoint based on said information;
calculating a respective difference between each economic constraint applicable to said first economic constraint waypoint and the respective estimated value for the corresponding economic factor;
determining whether the respective difference is greater than a configurable tolerance or not;
responsive to a determination that a respective difference is greater than a configurable tolerance, adding a second economic constraint waypoint not previously included in the flight trajectory and having a geospatial location with a corresponding economic constraint;
calculating speeds and determining speed modes of a new speed schedule to be flown by said aircraft along an economic constraint trajectory segment that starts at said second economic constraint waypoint and terminates at said first economic constraint waypoint, wherein said new speed schedule differs from said current speed schedule of said aircraft, and said speeds and speed modes of said new speed schedule are respectively calculated and determined to eliminate or reduce said respective differences within a configurable tolerance in accordance with user configuration data;
constructing a speed schedule advisory comprising an instruction for said aircraft to fly along said economic constraint trajectory segment at said calculated speeds and in said determined speed modes of said new speed schedule; and
controlling the aircraft to fly along said economic constraint trajectory segment at said calculated speeds and in said determined speed modes of said new speed schedule.

8. The method as recited in claim 7 , wherein said economic constraints comprise one or more or a combination of the following: a time constraint, a fuel constraint and a cost constraint.

9. The method as recited in claim 7 , wherein said speed schedule advisory further comprises an instruction to revert to said economy speed mode following said first economic constraint waypoint.

10. The method as recited in claim 7 , wherein said new speed schedule is optimized to minimize one or more of cost, time and fuel.

11. The method as recited in claim 7 , wherein said speed schedule advisory is communicated to said aircraft compliant with a protocol and data formats of at least one of internet protocol, user-specified protocol or datalink communication addressed to said aircraft.

12. A system for constructing an advisory that includes an altered speed schedule that differs from a current speed schedule of an aircraft, said altered speed schedule comprising a combination of speeds and speed modes that will cause the aircraft to meet at least one economic constraint when the aircraft flies along a path, said system comprising a computer system programmed to perform the following operations:
obtain or calculate information concerning at least one economic constraint trajectory segment of a flight trajectory stored in a flight management system of an aircraft that is flying in an economy speed mode, said information comprising a current location of said aircraft, a current speed schedule of said aircraft, flight parameters, aircraft performance data, current and forecast weather conditions along said flight trajectory, and one or more economic constraints applicable to a first economic constraint waypoint of said flight trajectory;
for said first economic constraint waypoint, calculate estimated values for one or more economic factors corresponding to said one or more economic constraints applicable to said first economic constraint waypoint based on said information;
calculate a respective difference between each economic constraint applicable to said first economic constraint waypoint and the respective estimated value for the corresponding economic factor;
determine whether the respective difference is greater than a configurable tolerance or not;
responsive to a determination that a respective difference is greater than a configurable tolerance, add a s

Assignees

• Boeing Co

Inventors

• Bailey Louis J
• Hale Ryan D
• Saccone Gregory T

Classifications

• G08G5/0043

  Physics · mapped topic

• G08G5/0039

  Physics · mapped topic

• G05D1/101 Primary

  specially adapted for aircraft · CPC title

• G06F7/00 Primary

  Methods or arrangements for processing data by operating upon the order or content of the data handled (logic circuits H03K19/00) · CPC title

• G08G5/0052

  Physics · mapped topic