Quiet mode operation for cockpit weather displays

• US 20040044445A1
• Filed: 08/30/2002
• Published: 03/04/2004
• Est. Priority Date: 08/30/2002
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Burdon, David
• Granted Patent: US 6,865,452 B2
• Time in Patent Office: Days
• US Class Current: 701/3
• CPC Class Codes: G01C 23/00 Combined instruments indicating more than one navigational value, e.g. for aircraft; Combined measuring devices for measuring two or more variables of movement, e.g. distance, speed or acceleration
• CPC Class Codes: G08G 5/0013 with a ground station
• CPC Class Codes: G08G 5/0021 located in the aircraft
• CPC Class Codes: G08G 5/0052 for cruising combined instruments indicating more than one navigational value G01C23/00
• CPC Class Codes: G08G 5/0091 for monitoring atmospheric conditions radar or analogous systems specially adapted for meteorological use G01S13/95; meteorology G01W

Abstract

An airborne computer is linked to a ground-based or satellite-based supplier of weather data that is geographically referenced. The computer retrieves the weather data on a regular cycle but does not display the data. The computer also has access to the aircraft'"'"'s state, i.e., position, altitude, speed, and intended route. Algorithms within the computer combine the present and estimated future positions of the aircraft with the weather data, and create an alert to the crew if a threat is detected. When a threat is detected, the weather display is activated to draw the attention of the crew to the threat.

Claims

1. A method for operating threat-warning display for a vehicle comprising:

obtaining real-time threat information from a source of threat information,

calculating the present position, heading and speed of the vehicle,

calculating whether at the present position, heading, and speed, the vehicle will encounter a threat in a predetermined period of time, and

displaying the threat on a display screen only when the vehicle will encounter the threat within the predetermined period of time.

2. A method as set forth in claim 1 wherein the threat is a weather threat.

3. A method as set forth in claim 2 wherein the display is inactive when the weather is not being displayed.

4. A method as set forth in claim 2 wherein the display is a multifunction display and is used to display other data when the weather is not being displayed.

5. A method as set forth in claim 2 wherein the weather threat is a threat taken from the group of turbulence, precipitation, convection, and icing.

6. A method as set forth in claim 5 wherein the severity of the threat is included in the threat data.

7. A method as set forth in claim 6 wherein the display screen displays only threats of a predetermined severity.

8. A method as set forth in claim 7 wherein the predetermined severity is determined by an operator of the vehicle.

9. A method as set forth in claim 8 wherein the display is inactive when the weather is not being displayed.

10. A method as set forth in claim 8 wherein the display is a multifunction display and is used to display other data when the weather is not being displayed.

11. A method for operating an aircraft cockpit weather threat display system in an unobtrusive manner, having a source of real-time weather data including the geographical position of weather of a level constituting a threat to the aircraft, a source of flight data including present position, speed, and planned course of the aircraft, a processor for processing weather and flight data, and a display for selectively displaying weather threats, comprising

using the flight data to calculate the position of the aircraft over a predetermined time,

comparing the position of the aircraft with the real time weather data to determine whether the aircraft will encounter weather which is a threat to the aircraft, and

displaying the threat on a display only when the vehicle will encounter the threat within the predetermined period of time.

12. A method as set forth in claim 11 wherein the real time weather data is in a gridded format, the grid covering an area of interest.

13. A method as set forth in claim 12 wherein the position of the aircraft is calculated within the area of interest.

14. A method as set forth in claim 11 wherein the display is inactive when the weather is not being displayed.

15. A method as set forth in claim 11 wherein the display is a multifunction display and is used to display other data when the weather is not being displayed.

16. A method as set forth in claim 11 wherein the predetermined time is set by a crewmember.

17. A method as set forth in claim 11 wherein the level of the weather constituting a threat is determined by a crewmember.

18. A method as set forth in claim 11 wherein the source of real time weather data is accessed through a telecommunications link.

19. A method as set forth in claim 18 wherein the source of real time weather data is a ground-based source.

20. A method as set forth in claim 18 wherein the source of real time weather data is a satellite-based source.

21. A method as set forth in claim 13 wherein the threat is displayed in color, different colors indicating different levels of threat.

22. A method as set forth in claim 13 wherein the predetermined time is established by a crewmember.

23. A method as set forth in claim 13 wherein the weather constituting a threat is determined by a crewmember.