Apparatus and method for determining aircraft tire pressure

Patent metadata

Field	Value
Publication number	US-11845540-B2
Application number	US-202117505731-A
Country	US
Kind code	B2
Filing date	Oct 20, 2021
Priority date	Dec 10, 2020
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

An apparatus for determining tire pressure of an aircraft tire. The apparatus includes a processing system configured to: obtain a first set and a second set of tire measurement data for an aircraft, wherein the first set is from a start of a flight cycle and the second set is from a time before the first set; and determine a steady state tire pressure based on the first and second sets of measurement data.

First claim

The invention claimed is:

1. An apparatus for determining tire pressure of an aircraft tire, the apparatus comprising a processing system configured to:
obtain a first set of tire pressure measurement data and a second set of tire measurement data both for an aircraft, wherein the first set is from a start of a flight cycle and the second set is from a time before the first set; and
determine a steady state tire pressure based on the first and second sets of measurement data.

2. The apparatus of claim 1 , wherein the processing system is further configured to:
compare the steady state tire pressure to a threshold; and
provide an alert based on the comparison.

3. The apparatus of claim 1 , wherein the processing system is further configured to:
determine a trend in the steady-state tie pressure trend over time; and
provide an alert based on the trend.

4. The apparatus of claim 1 , wherein the second set of tire pressure measurement data is from a time in a range of 10 to 30 minutes before the first set of tire pressure measurement data.

5. The apparatus of claim 1 , wherein the processing system is configured to determine the steady state tire pressure based on an exponential decay with a predetermined time constant.

6. The apparatus of claim 1 , wherein the measurement data includes temperature data, and the processing system is configured to determine the steady state tire pressure by adjusting for ambient temperature.

7. The apparatus of claim 1 , wherein the first and second sets of tire pressure measurement data includes data indicating a gross aircraft weight, and the processing system is configured to determine the steady state tire pressure by adjusting for the gross aircraft weight.

8. The apparatus of claim 1 , wherein the first and second tire pressure measurement data further comprises data indicating a pressure altitude and the processing system is configured to determine steady state pressure by adjusting for the pressure altitude.

9. A method of determining tire pressure of an aircraft tire, the method comprising:
obtaining a first set of tire pressure measurement data and a second set of tire measurement data both for an aircraft, wherein the first set is from a start of a flight cycle and the second set is from a time before the first set; and
determining a steady state tire pressure based on the first and second sets of tire measurement data.

10. The method of claim 9 , comprising:
comparing the steady state tire pressure to a threshold; and
providing an alert based on the comparison.

11. The method of claim 9 , comprising:
determining a trend in the steady-state tire pressure trend over time; and
providing an alert based on the trend.

12. The method of claim 9 , wherein the second set of tire pressure measurement data is from a time in a range of 10 to 30 minutes before the first set of tire pressure measurement data.

13. The method of claim 9 , comprising determining the steady state tire pressure based on an exponential decay with a predetermined time constant.

14. The method of claim 9 , wherein the first set and second set of tire pressure measurement data includes data indicating temperature, and the processing system is configured to determine the steady state tire pressure by adjusting for ambient temperature.

15. The method of claim 9 , wherein the first set and second set of tire pressure measurement data includes data indicating a gross aircraft weight, and the processing system is configured to determine the steady state tire pressure by adjusting for the gross aircraft weight.

16. The method of claim 9 , wherein the first set and second set of tire pressure the measurement data further comprises data indicating a pressure altitude, and the processing system is configured to determine the steady state tire pressure by adjusting for the pressure altitude.

17. An aircraft maintenance system comprising:
a communication interface configured to obtain a first set of tire pressure measurement data and a second set of tire measurement data both for an aircraft, wherein the first set is from a dispatch of an aircraft and the second set is from a time in a range of 10 to 30 minutes before the first set; and
a processor configured to determine a steady state tire pressure based on the first and second sets of the tire pressure measurement data using an exponential relationship.

Assignees

• Airbus Operations Ltd

Inventors

• Robertson Michael

Classifications

• B64C25/36 Primary

  Arrangements or adaptations of wheels, tyres or axles in general · CPC title

• B60C23/00318

  on the wheels or the hubs · CPC title

• B60C23/0474 Primary

  Measurement control, e.g. setting measurement rate or calibrating of sensors; Further processing of measured values, e.g. filtering, compensating or slope monitoring · CPC title

• B60C23/20

  Devices for measuring or signalling tyre temperature {only} · CPC title

• G01K13/00

  Thermometers specially adapted for specific purposes · CPC title