Aircraft Landing Gear Brake Dust Filter With Cooling Airflow
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Solution Overview
Problem
Existing aircraft landing gear assemblies fail to effectively capture and manage brake dust generated during braking events, leading to visual obtrusiveness and potential environmental contamination, while also impacting air flow and cooling efficiency.
Innovation Solution
An aircraft landing gear assembly incorporating a filter positioned to capture brake dust from the airstream, allowing air to flow through while separating and removing at least part of the dust, with a debris guard to prevent larger debris entry and a forced convection device to enhance airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a filter is introduced to capture brake dust, then brake dust release is reduced, but air flow resistance increases
Solution Approach 1:
The filter is constructed as a porous annular structure that allows air to pass through while capturing brake dust particles. The porous nature enables selective permeation where the pore size is sufficient to allow air flow but small enough to trap particulate matter, thus resolving the contradiction between dust capture and air flow maintenance
Solution Approach 2:
The filter extracts and removes brake dust from the air stream that flows through the wheel assembly. By positioning the filter in the air flow path and using its porous structure, it selectively extracts particulate matter while allowing the gas phase air to continue flowing, thereby reducing harmful emissions without significantly impeding cooling air flow
2Object-generated harmful factors
If brake dust is captured and retained, then environmental contamination is reduced, but filter clogging occurs
Solution Approach 1:
The filter is designed as an annular structure with significant surface area distributed around the wheel periphery. This dimensional arrangement provides extensive filtration surface that is less prone to clogging compared to a linear filter, as the captured dust is distributed across a large area rather than concentrated in a single path
Solution Approach 2:
The filter is designed as a removable component that can be easily detached and replaced. When the filter becomes clogged with brake dust, it can be discarded and replaced with a new filter, rather than attempting to clean or maintain the original filter. This approach ensures continuous reliable operation without complex cleaning mechanisms
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 the release of brake dust into the environment, facilitates improved disposal, maintains airflow for cooling, and prevents larger debris from entering the system, thus enhancing operational efficiency and cleanliness.
Implementation Method 1
The filter is configured to separate and remove at least part of the brake dust from the air while allowing the air to pass through the filter
Implementation Method 2
a forced convection device to enhance airflow
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An aircraft landing gear assembly 1 is disclosed. The assembly comprises a wheel 10, a disc brake 20 comprising one or more discs 21, 22 and a filter 30. The disc brake is operable to inhibit rotation of said wheel 10 during a braking event thereby resulting in the formation of brake dust from the one or more discs 21, 22. The filter 30 is positioned relative to the disc brake 20 such that air flows over the one or more discs 21,22 , through the filter 30 and away from the assembly 1, wherein the filter 30 is configured to separate and remove at least part of the brake dust from the air and while allowing the air to pass.