Aircraft Axle Damper Insert Mitigating Brake Vibration
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Solution Overview
Problem
Conventional aircraft wheel and brake assemblies experience vibration during braking, which can lead to component damage if not properly managed.
Innovation Solution
A cylindrical damper with a high-temperature particulate damping material is press-fit into the axle, providing effective vibration damping through a tuned mass or particle damper mechanism, with the damping material occupying between 50% and 100% of the damper's cavity volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional brake assembly is used, then braking function is provided, but vibration occurs during braking which can damage components
Solution Approach 1:
A damper insert comprising a canister filled with damping material is introduced as an intermediary element between the brake components. The canister is positioned within the brake assembly and the damping material inside it interacts with the vibrating components to reduce vibration transmission, thereby protecting against component damage while maintaining braking function.
Solution Approach 2:
The damping characteristics of the brake assembly are modified by introducing a canister filled with damping material. The material properties, canister positioning, and filling ratio are optimized to achieve desired vibration reduction across different operating conditions, changing the dynamic parameters of the brake system.
2Object-affected harmful factors
If damping material is added to reduce vibration, then vibration damping is improved, but the device complexity increases
Solution Approach 1:
The damping function is segmented from the main brake assembly by using a separate canister insert. This modular approach allows the damping material to be contained in a discrete component that can be independently designed, installed, and maintained, reducing overall system complexity while achieving vibration reduction.
Solution Approach 2:
The canister insert with damping material is designed as a relatively simple, potentially replaceable component. By using straightforward manufacturing processes for the canister and selecting readily available damping materials, the solution achieves vibration damping without significantly increasing complexity or cost.
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
The solution effectively mitigates axle and brake system vibrations, reducing the risk of component damage and ensuring safe operation by absorbing energy and reducing resonance.
Implementation Method 1
a volume of the cavity between 50% and 100% filled with a damping material
Implementation Method 2
The damping material may comprise a high temperature particulate. The damper may be at least one of a particle damper or a tuned mass damper
Implementation Method 3
The damper may be at least one of a particle damper or a tuned mass damper
Data Source
AI summary
Systems and methods are disclosed for aircraft wheels and brakes systems for use in, for example, an aircraft. In this regard, a damper for an axle may comprise a cylindrical canister defining a cavity configured to be inserted into a bore of the axle, the cavity at least partially filled with a damping material. The damper may act as a particle damper or a tuned mass damper to mitigate harmonic vibration of the axle and therefore the wheel and brake system.