Aircraft Galley Fitting Assembly With Convex-Protrusion Damping
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Solution Overview
Problem
Aircraft galleys are susceptible to damage from vibrations during operation, leading to fatigue, cracks, and potential leakage of waste water pipes due to shear stresses, necessitating complex and weight-increasing reinforcement methods.
Innovation Solution
An aircraft galley fitting assembly featuring a damping panel with convex protrusions, typically conical, positioned between the fitting panel and the aircraft galley structure to absorb and attenuate vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex reinforcement methods are used to protect the aircraft galley structure from vibrations, then the structural integrity is improved, but the weight of the aircraft increases
Solution Approach 1:
A damping panel is introduced as an intermediary component between the fitting panel and the aircraft galley structure. This damping panel absorbs and attenuates vibrations, protecting the galley structure from vibration-related damage without requiring weight-increasing reinforcement of the main structure or hoses.
Solution Approach 2:
The vibration damping function is extracted from the main structural components (fitting panel and galley structure) and isolated into a separate damping panel. This allows the damping function to be added without reinforcing the entire structure, thus avoiding unnecessary weight increase.
2Reliability
If complex reinforcement methods are used to protect waste water hoses from vibrations, then the reliability of hose connections is improved, but the device complexity increases
Solution Approach 1:
The damping panel serves as a mediator that protects waste water hoses from vibrations by absorbing shock and reducing shear stresses at the hose connection points. This eliminates the need for complex reinforcement methods such as additional brackets, clamps, or routing modifications.
Solution Approach 2:
The damping panel converts harmful vibration energies into beneficial damping effects by dissipating vibration energy through its material properties and geometric features (convex protrusions), thereby protecting the hoses without adding complex protective structures.
3Reliability
If a damping panel with convex protrusions is used to reduce vibrations, then the structural integrity is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The damping panel utilizes parameter changes in its material properties (viscoelasticity) and geometric parameters (convex protrusion shape, size, and distribution) to achieve vibration damping. These parameters can be optimized through material selection and design rather than requiring extremely tight manufacturing tolerances.
Solution Approach 2:
The damping panel may utilize porous or cellular material structures that provide effective vibration damping while being tolerant to manufacturing variations. Porous materials can absorb and dissipate vibration energy effectively even with moderate manufacturing precision.
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 vibrations in the aircraft galley structure, minimizing damage and pipe failure, enhancing structural integrity and safety while reducing maintenance needs.
Implementation Method 1
a damping panel configured to be located between the fitting panel and the aircraft galley structure when assembled, wherein the damping panel comprises a plurality of convex protrusions extending from a first side of the damping panel. The damping panel may be configured to reduce vibrations experienced in the aircraft structure being experienced by the aircraft galley structure.
Implementation Method 2
The distance between each convex protrusion may be arranged to allow for elastic expansion of each convex protrusion in a plane parallel to the first side of the damping panel when pressure is applied in a direction perpendicular to the first side of the damping panel.
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
An aircraft galley fitting assembly (1) for attaching an aircraft galley structure (10) to an aircraft structure, the fitting assembly comprising: a fitting panel (12) arranged to be fixed to the aircraft structure and the aircraft galley structure (10); and a damping panel (20) configured to be located between the fitting panel (12) and the aircraft galley structure (10) when assembled, wherein the damping panel (20) comprises a plurality of convex protrusions (22) extending from a first side of the damping panel.