Method and system for mitigating corrosion and/or erosion in an aircraft engine

Patent metadata

Field	Value
Publication number	US-12460581-B2
Application number	US-202218070571-A
Country	US
Kind code	B2
Filing date	Nov 29, 2022
Priority date	Nov 29, 2022
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

Methods and systems for mitigating corrosion and/or erosion in an aircraft engine are provided. A method includes receiving usage data characterizing a medium accumulated inside the aircraft engine. Using a trained model, the usage data is related to an assigned aircraft engine condition from a plurality of aircraft engine conditions. The trained model is trained using machine learning and historical data relating characteristics of the medium to the plurality of aircraft engine conditions. When the assigned aircraft engine condition is indicative of a corrosion risk for the aircraft engine, a corrosion-mitigating action is initiated for the aircraft engine. When the assigned aircraft engine condition is indicative of an erosion risk for the aircraft engine, an erosion-mitigating action is initiated for the aircraft engine.

First claim

The invention claimed is:

1 . A method of mitigating one or more of corrosion and erosion in an aircraft engine, the method comprising:
accumulating a medium inside the aircraft engine during operation of the aircraft engine and/or during a wash of the aircraft engine; receiving usage data characterizing the medium accumulated inside the aircraft engine, the usage data including one or more characteristics of the medium indicative of an environment in which the aircraft engine was operated; using a trained model, relating the usage data to an assigned aircraft engine condition from a plurality of aircraft engine conditions, the trained model being trained using machine learning and historical data relating characteristics of the media collected from a plurality of aircraft engines to the plurality of aircraft engine conditions; and performing one or more of the following:
when the assigned aircraft engine condition is indicative of a corrosion risk for the aircraft engine, initiating a corrosion-mitigating action for the aircraft engine; and
when the assigned aircraft engine condition is indicative of an erosion risk for the aircraft engine, initiating an erosion-mitigating action for the aircraft engine.

2 . The method of claim 1 , wherein the medium is accumulated inside the aircraft engine during operation of the aircraft engine.

3 . The method of claim 1 , wherein the medium is accumulated inside the aircraft engine during a wash of the aircraft engine.

4 . The method of claim 1 , wherein the plurality of aircraft engine conditions are indicative of inspection results respectively associated with the characteristics of the media.

5 . The method of claim 1 , wherein the assigned aircraft engine condition is indicative of both the corrosion risk and the erosion risk for the aircraft engine.

6 . The method of claim 1 , wherein the trained model includes a classification algorithm.

7 . The method of claim 1 , wherein the corrosion-mitigating action and/or the erosion-mitigating action include one or more of an inspection, a replacement of one or more components of the aircraft engine, and an engine wash.

8 . The method of claim 1 , wherein the usage data is indicative of an amount of a constituent of the medium.

9 . The method of claim 8 , wherein the constituent includes a soluble particle.

10 . The method of claim 8 , wherein the constituent includes any one of chloride, saline, and sulphone.

11 . The method of claim 8 , wherein the constituent includes sand or dust.

12 . The method of claim 1 , comprising collecting the medium in a container fluidly connectable to a drain port of the aircraft engine.

13 . The method of claim 12 , comprising analyzing the medium to generate the usage data.

14 . The method of claim 13 , wherein analyzing the medium includes performing one or more of a spectroscopy analysis of the medium and a deposit analysis of the medium.

15 . The method of claim 1 , wherein the usage data includes a pH level of the medium.

16 . The method of claim 1 , wherein the usage data includes an exposure time of the aircraft engine to the environment associated with the medium.

17 . The method of claim 16 , comprising determining the exposure time based on a quantity of the medium accumulated inside the aircraft engine.

18 . The method of claim 1 , comprising:
performing an engine wash of the aircraft engine when the assigned aircraft engine condition is indicative of a corrosion risk for the aircraft engine; and replacing a component of the aircraft engine when the assigned aircraft engine condition is indicative of an erosion risk for the aircraft engine.

19 . A system for mitigating one or more of corrosion and erosion in an aircraft engine, comprising:
a container configured to collect medium accumulated inside the aircraft engine during operation of the aircraft engine and/or during a wash of the aircraft engine; means for generating usage data by analyzing the medium collected in the container, the usage data including one or more characteristics of the medium indicative of an environment in which the aircraft engine was operated; one or more data processors; non-transitory machine-readable memory storing instructions executable by the one or more data processors and configured to cause the one or more data processors to:
receive the usage data;
use a trained model to relate the usage data to an assigned aircraft engine condition from a plurality of aircraft engine conditions, the model being trained using machine learning and historical data relating characteristics of the medium to the plurality of aircraft engine conditions; and
generate, based on the assigned aircraft engine condition, an output indicating that one or more of a corrosion-mitigating action and an erosion-mitigating action are required.

20 . The system of claim 19 , wherein:
the container is connectable to a drain port of the aircraft engine; and the system includes a valve operable to adjust a flow rate at which the medium enters the container via the drain port.

Assignees

• Pratt & Whitney Canada

Inventors

• Gharagozloo Alireza
• Tabar Roja

Classifications

• F01D25/32

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

• F01D25/002 Primary

  Cleaning of turbomachines · CPC title

• F05D2260/95

  Preventing corrosion · CPC title

• F05D2260/80

  Diagnostics · CPC title

• F05D2220/323

  for aircraft propulsion, e.g. jet engines · CPC title