Systems and methods for monitoring health of vibration damping components

• US 10,073,811 B2
• Filed: 01/07/2016
• Issued: 09/11/2018
• Est. Priority Date: 12/06/2011
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Swearingen, Kevin L., Mitchell, Bradley J., Maggiore, Jeanne C., Dame, Stephen Gregory, Followell, David A., Grgas, Dane Joe
• Primary Examiner(s): Patel, Shardul D
• Application Number:
  US14/989,900
• Publication Number:
  US 20160117869A1
• Time in Patent Office: 978 Days
• Field of Search: 701 291, 701 319, 701 334, 701 343, 701124, 701 314
• CPC Class Codes: B64C 25/505 Shimmy damping
• CPC Class Codes: B64D 2045/0085 Devices for aircraft health monitoring, e.g. monitoring flutter or vibration
• CPC Class Codes: B64D 45/00 Aircraft indicators or protectors not otherwise provided for camouflage F41H3/00
• CPC Class Codes: B64F 5/60 Testing or inspecting aircraft components or systems
• CPC Class Codes: G01M 17/04 Suspension or damping
• CPC Class Codes: G06F 17/00 Digital computing or data processing equipment or methods, specially adapted for specific functions information retrieval, database structures or file system structures therefor G06F16/00
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C

Abstract

A method for health monitoring of a damper associated with a landing gear is described which includes receiving sensor data from a pressure transducer and an accelerometer and optionally a thermal sensor operably mounted on or near the damper, a computer system, and applying, using the computer system, a diagnostic algorithm to the sensor data to induce and predict the health of the damper.

Claims

1. A method for health monitoring of a damper associated with a landing gear of an aircraft, the method comprising:

receiving vibration data measured during ground operations by at least one accelerometer operably mounted on or near the landing gear; and

applying, with a computer system, a diagnostic algorithm to the vibration data to produce a health assessment of the damper, wherein the damper is configured to reduce a rotational oscillation of a lower landing gear assembly with respect to an upper landing gear assembly.

2. The method according to claim 1 wherein receiving the vibration data comprises:

receiving the vibration data at a processor module associated with the at least one accelerometer; and

transmitting the vibration data from the processor module to a data concentrator.

3. The method according to claim 2 further comprising collating the vibration data with a plurality of aircraft parameters received by at least one of the data concentrator and a separate computing system.

4. The method according to claim 2 wherein applying the diagnostic algorithm to the vibration data comprises executing a health algorithm on at least one of the data concentrator and a separate computing system.

5. The method according to claim 1 further comprising transmitting the health assessment and the vibration data to a ground-based health application for storage in a database.

6. The method according to claim 5 further comprising operating the ground-based health application to perform trending and predict a future health of the damper.

7. The method according to claim 1 wherein the damper is one of a plurality of dampers, the method further comprising:

receiving vibration data associated with each of the plurality of dampers at a respective processor module associated with each damper; and

transmitting the vibration data from each processor module to a data concentrator.

8. The method according to claim 7 further comprising filtering and time stamping the vibration data at the respective processor modules before transmitting to the data concentrator.

9. The method according to claim 1 wherein applying the diagnostic algorithm comprises determining a source of vibration of the damper.

10. The method according to claim 1 further comprising:

providing the health assessment to a health application operating on an external computer system not aboard the aircraft;

extracting, by the external computer system, relevant historical data from a database; and

determining, by the external computer system, a projected future health for the damper based on the relevant historical data and the health assessment.

11. A health monitoring system for a damper associated with a landing gear of an aircraft, the health monitoring system comprising:

at least one accelerometer mounted on or near the landing gear, said at least one accelerometer operable to measure vibration data during ground operations; and

a diagnostic computer communicatively coupled to said at least one accelerometer, said diagnostic computer programmed to apply a diagnostic algorithm to the vibration data to produce a health assessment of the damper, wherein the damper is configured to reduce a rotational oscillation of a lower landing gear assembly with respect to an upper landing gear assembly.

12. The health monitoring system according to claim 11 further comprising a processor module proximate the damper and communicatively coupled to said at least one accelerometer and said diagnostic computer, said processor module programmed to collect the vibration data from said at least one accelerometer and transmit the vibration data to said diagnostic computer.

13. The health monitoring system according to claim 12 wherein said processor module is further programmed to filter and time stamp the vibration data.

14. The health monitoring system according to claim 11 wherein said diagnostic computer is further programmed to collate the vibration data with a plurality of aircraft parameters received by said diagnostic computer.

15. The health monitoring system according to claim 11 wherein said diagnostic computer is further programmed to transmit the health assessment and the vibration data to a ground-based health application for storage in a database.

16. The health monitoring system according to claim 15 wherein said diagnostic computer is further programmed to perform trending and predict a future health of the damper.

17. The health monitoring system according to claim 11 wherein the damper is one of a plurality of dampers, said health monitoring system further comprising a respective processor module associated with each of the plurality of dampers, each said processor module programmed to receive vibration data associated with said associated damper and to transmit the vibration data to said diagnostic computer.

18. The health monitoring system according to claim 11 further comprising a ground station communicatively coupled to said diagnostic computer, said ground station programmed to:

receive the health assessment from said diagnostic computer;

extract relevant historical data from a database; and

determine a projected future health for the damper based on the relevant historical data and the health assessment.

19. The health monitoring system according to claim 11 further comprising at least one energy harvesting device operable to utilize vibration of the landing gear to generate power to operate said accelerometer.

20. An apparatus for monitoring a health of at least one vibration damping component associated with a landing gear, said apparatus comprising:

at least one accelerometer capable of measuring response attributes of the at least one vibration damping component during ground operations; and

at least one processor capable of receiving and analyzing data extracted from said at least one accelerometer to determine a real-time health, predict a future health state, and establish a current performance capability of the at least one vibration damping component, wherein the at least one vibration damping component is configured to reduce a rotational oscillation of a lower landing gear assembly with respect to an upper landing gear assembly.