Method of mitigating corrosion and erosion in an aircraft engine

Patent metadata

Field	Value
Publication number	US-12305520-B2
Application number	US-202218045658-A
Country	US
Kind code	B2
Filing date	Oct 11, 2022
Priority date	Oct 11, 2022
Publication date	May 20, 2025
Grant date	May 20, 2025

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.

First claim

The invention claimed is:

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.

Assignees

• Pratt & Whitney Canada

Inventors

• Gharagozloo Alireza
• Tabar Roja
• Lavoie Pascal

Classifications

• F05D2270/11

  to prolong engine life · CPC title

• F05D2260/95

  Preventing corrosion · CPC title

• F01D25/32 Primary

  Collecting of condensation water; Drainage {; Removing solid particles} · CPC title

• F01D25/24

  Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) · CPC title

• F01D25/002

  Cleaning of turbomachines · CPC title