Aircraft Wheel Pneumatic Port Corrosion Mitigation Structure

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Solution Overview

Problem

Aircraft wheel pneumatic ports are prone to corrosion due to moisture ingress during maintenance, which is difficult to detect and can lead to costly rework or structural damage.

Innovation Solution

Incorporation of corrosion mitigation devices, such as anodic or desiccant devices, within the air channels of pneumatic ports to absorb moisture and prevent corrosion, which can be easily replaced during maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If corrosion mitigation devices are installed in pneumatic ports, then corrosion protection is improved, but device complexity increases

Engineering Contradiction:

Improvecorrosion protectionVSAvoidpneumatic port structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The corrosion mitigation device is nested within the existing pneumatic port structure, specifically positioned inside the air channel. This allows the corrosion protection function to be integrated into the existing design without adding external components or significantly increasing overall device complexity.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The corrosion mitigation device acts as an intermediary element between the external environment and the pneumatic port internal components. It absorbs moisture and prevents corrosion without requiring direct modification of the valve or other critical components, thereby maintaining system simplicity while improving reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Duration of action of stationary object

If corrosion mitigation devices are installed in pneumatic ports, then service life is extended, but manufacturing complexity increases

Engineering Contradiction:

Improvewheel assembly service lifeVSAvoidpneumatic port assembly

Core Design Contradiction:

Duration of action of stationary objectVSEase of manufacture

Solution Approach 1:

The corrosion mitigation device is pre-installed within the pneumatic port structure during manufacturing, before the valve or other components are installed. This preliminary action ensures corrosion protection is in place from the start, extending service life without requiring complex post-manufacturing assembly procedures.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The corrosion mitigation device is designed as a separate, modular component that can be independently manufactured and then integrated into the pneumatic port. This segmentation allows different specialists to manufacture different components separately, simplifying the overall manufacturing process while still achieving extended service life.

Inventive Principle:

Principle #1Segmentation

3Reliability

If corrosion mitigation devices are installed in pneumatic ports, then maintenance costs are reduced, but ease of repair decreases

Engineering Contradiction:

Improvecorrosion preventionVSAvoidpneumatic port maintenance

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The corrosion mitigation device provides self-service corrosion protection by continuously absorbing moisture within the pneumatic port environment. This automatic protection mechanism reduces maintenance costs by preventing corrosion before it occurs, eliminating the need for frequent inspections and repairs of corroded components.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The corrosion mitigation device is designed as a consumable component with a finite service life. When it becomes saturated with moisture, it can be easily replaced with a new device. This approach is more cost-effective than repairing corroded pneumatic ports, as the replacement device is inexpensive and the replacement process is simple, thereby reducing overall maintenance costs despite the added complexity.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Reduces maintenance costs, extends service life of aircraft wheels, and minimizes scrap by effectively mitigating corrosion in pneumatic ports.

Implementation Method 1

Incorporation of corrosion mitigation devices, such as anodic or desiccant devices, within the air channels of pneumatic ports to absorb moisture and prevent corrosion

Methodology Applied

Scientific EffectDesiccant: Desiccant Material

Implementation Method 2

Incorporation of corrosion mitigation devices, such as anodic or desiccant devices, within the air channels of pneumatic ports

Methodology Applied

Scientific EffectAnodic protection: Anodising

Data Source

PatentUS12576677B2Corrosion protection for aircraft wheel pneumatic ports

Publication Date: 2026.03.17 GOODRICH CORP

AI summary

A wheel assembly is provided that includes a structure defining a wheel portion configured to receive a portion of a tire. The wheel assembly further includes a structure of the wheel portion defining an air channel from a face of the wheel portion to an area that receives the portion of the tire, an end of the air channel proximate to the face being configured to receive a valve, where the structure is further configured to receive a corrosion mitigation device within the air channel.