Method and system for aviation navigation

• US 7,874,521 B2
• Filed: 10/17/2006
• Issued: 01/25/2011
• Est. Priority Date: 10/17/2005
• Status: Expired due to Fees

• Current Assignee: Intellectual Ventures I LLC (Intellectual Ventures LLC)
• Original Assignee: Hoshiko LLC (Raoul Management LLC)
• Inventors: Shuster, Gary Stephen
• Primary Examiner(s): Dinh; Tien
• Assistant Examiner(s): Green; Richard R
• Application Number:
  US11/550,391
• Publication Number:
  US 20070138345A1
• Time in Patent Office: 1,561 Days
• Field of Search: 244/186, 244/185, 244/188, 244/183, 244/175, 701/4, 701/16, 701/17, 701/18, 701/201, 701/202
• US Class Current: 244/175
• CPC Class Codes: G05D 1/105 specially adapted for unpowered flight, e.g. glider, parachuting, forced landing parachutes per se B64D17/00
• CPC Class Codes: G05D 1/106 Change initiated in response to external conditions, e.g. avoidance of elevated terrain or of no-fly zones

Abstract

A system operates to guide an aircraft to or along a route designed to maintain the aircraft within a safe glide distance of an acceptable emergency landing area. The system uses a database of emergency landing areas with glide characteristics of an aircraft to determine a route that minimizes travel time or other specified parameter, while keeping the aircraft within a safe glide distance of a landing area in the database meeting the landing requirements for the aircraft.

Claims

1. A method for defining a flight path for an aircraft based on glide characteristics, the method performing computer-implemented operations comprising:

receiving flight parameters comprising an origin, a destination, glide characteristics for an aircraft, and emergency landing area preferences including criteria for selection of acceptable emergency landing areas; and

determining a flight path between the origin and destination, the flight path calculated to maintain the aircraft within glide range of selected acceptable emergency landing areas located within a glide range indicated in the received glide characteristics and matching the emergency landing area preferences, wherein at least one of the selected acceptable emergency landing areas is not part of an airport;

wherein the selected acceptable emergency landing areas are chosen based at least in part on landing area classifications from a database of emergency landing areas and the received emergency landing area preferences.

2. The method of claim 1, wherein the selected acceptable emergency landing areas comprise a plurality of landing areas each meeting defined acceptable landing criteria for the aircraft.

3. The method of claim 2, wherein the defined acceptable landing criteria comprises one or more of terrain restrictions, landing area classifications, and required minimum roll distance.

4. The method of claim 3, wherein the selected acceptable emergency landing areas are chosen according to a priority order determined at least in part from their respective classifications.

5. The method of claim 1, further comprising selecting the selected acceptable emergency landing areas from landing areas exceeding a defined threshold of classification.

6. The method of claim 1, wherein the determining step further comprises calculating the flight path to minimize at least one of travel time and fuel consumption between the origin and destination.

7. The method of claim 1, wherein the glide characteristics comprise a best glide speed and a descent rate at the best glide speed.

8. The method of claim 1, wherein the glide characteristics comprise a glide speed range and a corresponding descent rate range.

9. The method of claim 1, wherein the determining step further comprises calculating the flight path using wind speed and wind direction data.

10. The method of claim 1, further comprising providing flight vectors during the flight to maintain the aircraft on the determined flight path.

11. The method of claim 1, further comprising periodically updating information pertaining to the emergency landing areas.

12. The method of claim 1, wherein the determining is performed by a computer system comprising computer hardware.

13. A system for defining a flight path for an aircraft, the system comprising a computer operatively associated with a memory, the memory holding instructions for:

receiving at least glide characteristics for an aircraft and emergency landing area preferences including a first percentage indicating a percentage of a flight path in which the aircraft should be within a glide range of any emergency landing area having a first landing area classification and a second percentage indicating a percentage of the flight path in which the aircraft may be within the glide range of any emergency landing area having a second landing area classification, wherein the first landing area classification includes airports and the second landing area classification does not include airports; and

determining a flight path between an origin and a destination, the flight path calculated to maintain the aircraft within glide range of selected acceptable emergency landing areas from a database of emergency landing areas,

including the requirement that the aircraft is within the glide range of emergency landing areas having the first landing area classification for at least the first percentage of the flight path and the aircraft is within the glide range of only emergency landing areas having the second landing area classification for no more than the second percentage of the flight path.

14. The system of claim 13, wherein the selected acceptable emergency landing areas comprise a plurality of landing areas each meeting defined acceptable landing criteria for the aircraft.

15. The system of claim 14 wherein the defined acceptable landing criteria comprises terrain restrictions, landing area classifications, and required minimum roll distance.

16. The system of claim 13, the memory further holding instructions for selecting the selected acceptable emergency landing areas from landing areas exceeding a defined threshold of classification.

17. The system of claim 16, the memory further holding instructions for calculating the flight path to minimize fuel consumption between the origin and the destination.

18. The system of claim 13, the memory further holding instructions for calculating the flight path to minimize travel time between the origin and the destination.

19. The system of claim 13, the memory further holding instructions for calculating the flight path using wind speed and wind direction data.

20. The system of claim 13, the memory further holding instructions for providing flight vectors during the flight to maintain the aircraft on the determined flight path.

21. A tangible computer-readable medium having instructions stored thereon configured for execution on a computing device in order to cause the computing device to:

receive flight parameters comprising an origin, a destination, a maximum cruising altitude, a maximum airspeed, glide characteristics for an aircraft, and emergency landing area preferences including criteria for selection of acceptable emergency landing areas; and

determine a flight path between the origin and destination, the flight path calculated to maintain the aircraft within a glide range indicated in the received glide characteristics of selected acceptable emergency landing areas matching the emergency landing area preferences along flight path, wherein at least one of the selected acceptable emergency landing areas is not part of an airport;

wherein the at least one acceptable emergency landing area is selected based at least in part on a landing area classification from a database of emergency landing areas and the received emergency landing area preferences.

22. The computer-readable medium of claim 21, wherein the selected acceptable emergency landing areas comprise a plurality of landing areas each meeting defined acceptable landing criteria for the aircraft.

23. The computer-readable medium of claim 22, wherein the defined acceptable landing criteria comprise terrain restrictions, landing area classifications, and required minimum roll distance.

24. The computer-readable medium of claim 21, further holding instructions for selecting the selected acceptable emergency landing areas from landing areas exceeding a defined threshold of classification.

25. The computer-readable medium of claim 21, further holding instructions operative to calculate the flight path to minimize at least one of travel time and fuel consumption between the origin and the destination.

26. The computer-readable medium of claim 21, further holding instructions operative to calculate the flight path to minimize fuel consumption between the origin and the destination.

27. The computer-readable medium of claim 21, further holding instructions operative to calculate the flight path using wind speed and wind direction data.

28. The computer-readable medium of claim 21, further holding instructions operative to provide flight vectors during the flight to maintain the aircraft on the determined flight path.