IP Library Granted Patent US 12,305,520
Granted Patent B2
US 12,305,520 · App. 18/045,658 · Granted May 20, 2025

Method of mitigating corrosion and erosion in an aircraft engine

Inventors: Alireza Gharagozloo (Boucherville, CA); Roja Tabar (Boucherville, CA); Pascal Lavoie (Longueuil, CA)
Assignee: PRATT & WHITNEY CANADA CORP.
F01D25/007F01D25/24F01D25/32F01D25/002F05D2260/95F05D2270/11
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Quick Facts
Patent No.
US 12,305,520
App. No.
18/045,658
Granted
May 20, 2025
Kind
B2
Abstract

A method of mitigating corrosion and erosion in an aircraft engine, includes: receiving a concentration of contaminants contained within a sample of an environmental medium ingested by the aircraft engine; determining a frequency of corrosion and erosion mitigation actions based on the concentration of the contaminants; and instructing a performance of the corrosion and erosion mitigation actions at the frequency.

Claims (30)

1. A method of mitigating corrosion and erosion in an aircraft engine, comprising:

receiving a concentration of contaminants contained within a sample of an environmental medium ingested by the aircraft engine, including receiving the concentration of the contaminants contained within a container containing the sample, the container fluidly connectable to a drain port of the aircraft engine;

determining a frequency of corrosion and erosion mitigation actions based on the concentration of the contaminants; and

instructing a performance of the corrosion and erosion mitigation actions at the frequency.

2. The method of claim 1 , wherein the receiving of the concentration of the contaminants includes receiving results of an analysis of the sample from a volume of the environmental medium collected after a given period of time of operation of the aircraft engine.

3. The method of claim 2 , wherein the analysis comprises one or more of a spectroscopy analysis of the sample, a deposit analysis of the sample, and an exposition of the sample to strips configured to change color when a concentration of a given contaminants is about a given threshold.

4. The method of claim 1 , wherein the receiving of the concentration of the contaminants includes receiving a concentration of soluble particles causing corrosion.

5. The method of claim 1 , wherein the receiving of the concentration of the contaminants includes receiving a concentration of insoluble particles causing erosion.

6. The method of claim 1 , wherein the receiving of the concentration of the contaminants includes receiving a concentration of one or more of chloride, saline, sulphone, sand, and dust.

7. The method of claim 1 , wherein the determining of the frequency of the corrosion and erosion mitigation actions based on the concentration of the contaminants includes determining that the frequency of the corrosion and erosion mitigation actions is decreased compared to a baseline frequency of the corrosion and erosion mitigation actions.

8. The method of claim 1 , wherein the determining of the frequency of the corrosion and erosion mitigation actions based on the concentration of the contaminants includes determining that the frequency of the corrosion and erosion mitigation actions is increased compared to a baseline frequency of the corrosion and erosion mitigation actions.

9. The method of claim 1 , wherein the instructing of the performance of the corrosion and erosion mitigation actions at the frequency includes instructing the performance of one or more of an inspection, replacement of one or more components of the aircraft engine, and engine wash.

10. The method of claim 1 , further comprising determining an exposure time of the aircraft engine to the environmental medium containing the contaminants.

11. The method of claim 10 , wherein the determining of the exposure time includes determining the exposure time as a function of a volume of the environmental medium within a container connectable to a drain port of the aircraft engine and of a flow rate of the environmental medium at which the environmental medium flows into the container.

12. A method of mitigating corrosion and erosion in an aircraft engine, comprising:

receiving a concentration of contaminants contained within a sample of an environmental medium ingested by the aircraft engine, including receiving results of an analysis of the sample from a volume of the environmental medium collected after a given period of time of operation of the aircraft engine, the analysis including one or more of a spectroscopy analysis of the sample, a deposit analysis of the sample, and an exposition of the sample to strips configured to change color when a concentration of a given contaminants is about a given threshold;

determining a frequency of corrosion and erosion mitigation actions based on the concentration of the contaminants; and

instructing a performance of the corrosion and erosion mitigation actions at the frequency.

13. The method of claim 12 , wherein the receiving of the concentration of the contaminants includes receiving a concentration of one or more of soluble and insoluble particles causing corrosion.

14. The method of claim 12 , wherein the receiving of the concentration of the contaminants includes receiving a concentration of one or more of chloride, saline, sulphone, sand, and dust.

15. The method of claim 12 , wherein the determining of the frequency of the corrosion and erosion mitigration actions based on the concentration of the contaminants includes determining that the frequency of the corrosion and erosion mitigation actions is decreased or increased compared to a baseline frequency of the corrosion and erosion mitigation actions.

16. The method of claim 12 , wherein the instructing of the performance of the corrosion and erosion mitigation actions at the frequency includes instructing the performance of one or more of an inspection, replacement of one or more components of the aircraft engine, and engine wash.

17. A method of mitigating corrosion and erosion in an aircraft engine, comprising:

receiving a concentration of contaminants contained within a sample of an environmental medium ingested by the aircraft engine;

determining an exposure time of the aircraft engine to the environmental medium containing the contaminants, including determining the exposure time as a function of a volume of the environmental medium within a container connectable to a drain port of the aircraft engine and of a flow rate of the environmental medium at which the environmental medium flows into the container;

determining a frequency of corrosion and erosion mitigration actions based on the concentration of the contaminants; and

instructing a performance of the corrosion and erosion mitigation actions at the frequency.

18. The method of claim 17 , wherein the receiving of the concentration of the contaminants includes receiving a concentration of one or more of soluble and insoluble particles causing corrosion.

19. The method of claim 17 , wherein the determining of the frequency of the corrosion and erosion mitigation actions based on the concentration of the contaminants includes determining that the frequency of the corrosion and erosion mitigation actions is increased or decreased compared to a baseline frequency of the corrosion and erosion mitigation actions.

20. The method of claim 17 , wherein the instructing of the performance of the corrosion and erosion mitigation actions at the frequency includes instructing the performance of one or more of an inspection, replacement of one or more components of the aircraft engine, and engine wash.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 19, 2023
From: GHARAGOZLOO, ALIREZA; TABAR, ROJA; LAVOIE, PASCAL
To: PRATT & WHITNEY CANADA CORP.
Reel/Frame 062738/0546 →
Continuity (1)
Related Publication 20240117755A1 · Apr 11, 2024
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