METHOD OF DETERMINING A TURBULENT CONDITION IN AN AIRCRAFT

• US 20140074326A1
• Filed: 12/19/2012
• Published: 03/13/2014
• Est. Priority Date: 09/07/2012
• Status: Active Grant

• Current Assignee: GE Aviation Systems LLC (GE Aerospace)
• Original Assignee: GE Aviation Systems LLC (GE Aerospace)
• Inventors: Pereira, Frazer Leslie
• Granted Patent: US 9,043,055 B2
• Time in Patent Office: Days
• US Class Current: 701/14
• CPC Class Codes: B64D 45/00 Aircraft indicators or protectors not otherwise provided for camouflage F41H3/00
• CPC Class Codes: G01C 21/10 by using measurements of speed or acceleration G01C21/24, G01C21/26 take precedence
• 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: G01W 1/00 Meteorology
• CPC Class Codes: G01W 2001/003 Clear air turbulence detection or forecasting, e.g. for aircrafts
• CPC Class Codes: G08G 5/0091 for monitoring atmospheric conditions radar or analogous systems specially adapted for meteorological use G01S13/95; meteorology G01W

Abstract

A method of determining a turbulent condition in an aircraft with a handheld device where the handheld device has at least one of a gyroscope, seismometer, and an accelerometer where the method includes receiving an output from the at least one of the gyroscope, seismometer, and accelerometer while the handheld device is located within the aircraft and providing an indication of a turbulent condition.

Claims

1. A method of determining a turbulent condition in an aircraft with a handheld device having at least one of a gyroscope, seismometer, and an accelerometer, the method comprising:

receiving an output from the at least one of the gyroscope, seismometer, and accelerometer while the handheld device is located within the aircraft;

comparing the received output to a turbulence threshold value for the received output; and

providing an indication of a turbulent condition when the comparison indicates the received output exceeds the turbulence threshold value.

2. The method of claim 1 wherein the receiving the output comprises receiving an angle output from the gyroscope indicative of at least one of a pitch, roll and yaw angle of the aircraft.

3. The method of claim 2, further comprising determining a rate of change for at least one of the pitch, roll and yaw angle from the angle output.

4. The method of claim 3 wherein the comparing comprises comparing the rate of change to a corresponding rate of change threshold value.

5. The method of claim 1 wherein the receiving the output comprises receiving a motion output from the seismometer.

6. The method of claim 5 wherein the motion output is indicative of vibration motion of the aircraft.

7. The method of claim 1 wherein the receiving the output comprises receiving acceleration output from the accelerometer.

8. The method of claim 7 wherein the acceleration output is indicative of the acceleration in multi-dimensional motion of the aircraft.

9. The method of claim 1 wherein the receiving the output comprises:

receiving an angle output from the gyroscope indicative of a pitch, roll and yaw angle of the aircraft, receiving a motion output from the seismometer, and receiving acceleration output from the accelerometer.

10. The method of claim 9, further comprising determining at least one of the motion and rate of change in motion of the aircraft in a multi-dimensional direction from the angle output, motion output, and acceleration output.

11. The method of claim 10 wherein the determining comprises executing software on the handheld device that receives as input the angle output, motion output, and acceleration output and then calculates the at least one of the motion and rate of change of motion.

12. The method of claim 10 wherein the comparing comprises comparing the at least one of the motion and rate of change in motion to a corresponding motion threshold and motion rate of change threshold.

13. The method of claim 12 wherein the comparing comprises executing software on the handheld device that compares the at least one of the motion and rate of change in the motion to the corresponding motion threshold and motion rate of change threshold.

14. The method of claim 12 wherein the determining further comprises compensating for a relative orientation of the handheld device and the aircraft.

15. The method of claim 12 wherein the providing the indication of the turbulent condition comprises providing an indication on the handheld device.

16. The method of claim 15 wherein the providing the indication on the handheld device comprises at least one of displaying an indication on a display of the handheld device and emitting an audible indication from the handheld device.

17. The method of claim 12 wherein the providing the indication of the turbulent condition comprises transmitting a turbulence signal from the handheld device to the aircraft.

18. The method of claim 17, further comprising providing an indication on a flight deck of the aircraft in response to the turbulence signal.

19. The method of claim 1 wherein the providing the indication of the turbulent condition comprises transmitting a turbulence signal from the handheld device to the aircraft.

20. The method of claim 1, further comprising comparing the received output to threshold values over time and providing an indication of a turbulent condition when the comparison indicates turbulence.