Aircraft Cabin Monument Framework Load Distribution
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Solution Overview
Problem
Aircraft cabin monuments lack sufficient rigidity and efficient installation methods, often requiring machining and thick walls to handle mechanical loads, which increases weight and complexity.
Innovation Solution
A cabin monument design featuring a framework with structural struts and sandwich panels that distribute mechanical loads efficiently, reducing wall thickness and weight, and allowing for easy installation without pre-machining, using a base frame and frame structure to form a skeleton-like structure for enhanced rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If side walls are made thicker to handle mechanical loads, then strength is improved, but weight increases
Solution Approach 1:
The cabin monument is divided into a framework structure and separate side walls. The framework comprises a base frame and multiple structural struts that form a load-bearing skeleton, while the side walls are thinner panels fastened between the struts. This segmentation allows the framework to bear mechanical loads independently, enabling thinner side walls and reduced overall weight.
Solution Approach 2:
The side walls are constructed as sandwich panels with a honeycomb core structure between outer skins. This composite material configuration provides high strength-to-weight ratio, allowing the side walls to maintain adequate strength while being significantly thinner and lighter than solid walls would require.
2Ease of manufacture
If side walls are directly screwed or bonded together at end faces, then ease of manufacture is improved, but rigidity deteriorates
Solution Approach 1:
The structure is segmented into a rigid framework and separate side wall panels. The framework provides the primary structural integrity through its strut arrangement, while side walls are simply fastened between struts rather than being rigidly connected to each other. This segmentation maintains rigidity through the framework while simplifying side wall installation.
Solution Approach 2:
The structural struts act as intermediary elements that connect the base frame and provide attachment points for side walls. Instead of side walls connecting directly to each other at corners, they are independently fastened to the strut framework, which mediates the connection and maintains overall rigidity.
3Ease of manufacture
If inserts are provided in honeycomb structure for screwing, then ease of manufacture is improved, but device complexity increases
Solution Approach 1:
The fastening function is extracted from the honeycomb core structure itself. Instead of embedding inserts within the honeycomb cells, the patent uses separate structural struts with integrated fastening surfaces. The struts extend from the base frame and provide external attachment points for side walls, removing the need for complex internal honeycomb modifications.
4Ease of manufacture
If filler is used to fill honeycomb structure for bonding, then ease of manufacture is improved, but device complexity increases
Solution Approach 1:
The bonding function is extracted from the honeycomb structure. Instead of filling honeycomb cells with filler to create bonding surfaces, the patent uses structural struts with dedicated fastening surfaces. The struts provide external attachment areas where side walls can be bonded or fastened without modifying the honeycomb core structure.
5Strength
If fittings are used to stiffen side walls, then strength is improved, but device complexity increases
Solution Approach 1:
The stiffening function is merged into the structural struts themselves. The struts are designed to extend from the base frame and provide both structural support and attachment functionality. By integrating the stiffening role into the existing strut structure, separate fittings are eliminated, reducing component count while maintaining side wall stiffness through the strut framework.
Data Source
AI summary
A cabin monument for an aircraft. The cabin monument has a framework with a base frame and a frame structure connected to the base frame, and side walls fastened to the frame structure. By fastening the side walls to the structural struts of the frame structure, a mechanical load acting on the cabin monument is distributed between the framework and the side walls.