System and method of assessing thermal energy levels of a gas turbine engine component

• US 8,074,498 B2
• Filed: 05/18/2009
• Issued: 12/13/2011
• Est. Priority Date: 05/18/2009
• Status: Active Grant

• Current Assignee: Rtx Corporation
• Original Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Agrawal, Rajendra K., Rajamani, Ravi, Schneider, William F., Wood, Coy Bruce
• Primary Examiner(s): Kirkland, III, Freddie
• Application Number:
  US12/467,973
• Publication Number:
  US 20100288034A1
• Time in Patent Office: 939 Days
• Field of Search: 731/120.1, 731/120.3, 7311204-11206
• US Class Current: 73/112.01
• CPC Class Codes: F01D 21/003 Arrangements for testing or measuring for measuring vibrations G01H
• CPC Class Codes: F02C 7/052 with dust-separation devices

Abstract

An example method of assessing a component of a gas turbine engine includes monitoring debris in at least a portion of an engine and establishing an estimated thermal energy level for a component of the engine based on the monitoring. The method may use gas path parameters to establish the estimated thermal energy level. An example gas turbine engine component assessment system includes a debris monitoring system configured to monitor debris moving through a portion of an engine and a controller programmed to execute an engine deterioration model that assesses a thermal energy level of at least one component of the engine based on information from the debris monitoring system.

Claims

1. A method of assessing a component of a gas turbine engine comprising:

monitoring debris in at least a portion of an engine;

determining a characteristic of the debris; and

establishing an estimated thermal energy level for a component of the engine based on the characteristic of the debris.

2. The method of claim 1 including initiating a notification based on the estimated thermal energy level.

3. The method of claim 1 including performing a maintenance action on the component when the estimated thermal energy level corresponds to a set value.

4. The method of claim 1 wherein the monitoring includes quantifying the debris.

5. The method of claim 1 including establishing the estimated thermal energy level using an engine deterioration model.

6. The method of claim 1 including adjusting the component or another component of the engine to lower the estimated thermal energy level.

7. The method of claim 6 wherein the adjusting includes actuating a plurality of compressor variable vanes.

8. The method of claim 7, including actuating the plurality of compressor variable vanes to be more open relative to a nominal baseline vane schedule.

9. The method of claim 6 wherein the adjusting comprises increasing turbine cooling flows through modulation of cooling flow supply system.

10. The method of claim 1 wherein the estimated thermal energy level for the component comprises an estimated metal temperature of the component.

11. The method of claim 1, including adjusting during operation of the engine.

12. A method of assessing components of a gas turbine engine comprising:

monitoring airflow moving through a portion of an engine to detect a presence of debris carried by the airflow;

determining a characteristic of the debris;

initiating a notification relating to an estimated temperature of a component of the engine based at least in part on the characteristic; and

adjusting the component or another component of the engine in response to the characteristic to change the estimated temperature.

13. The method of claim 12 wherein the characteristic comprises an amount of debris.

14. The method of claim 12 wherein the characteristic comprises a type of debris.

15. The method of claim 12, wherein the adjusting occurs during operation of the engine during flight.

16. The method of claim 12, including adjusting the component or another component of the engine to be more open relative to a baseline schedule.

17. A gas turbine engine component assessment system comprising:

a debris monitoring system configured to monitor debris moving through a portion of an engine; and

a controller programmed to execute an engine deterioration model that assesses an estimated thermal energy level of at least one component of the engine based on a characteristic of the debris provided by the debris monitoring system.

18. The system of claim 17 including a notification device, the controller programmed to initiate a notification of the notification device if the estimated thermal energy level corresponds to a set value.

19. The system of claim 17, including an adjustable component of the engine, the controller configured to initiate adjustments to the adjustable component in response to the assessed thermal energy level.

20. The system of claim 17, wherein the adjustments are initiated during operation of the engine during flight.