Aircraft Seat Structural Component with Composite Plate Gaps
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Solution Overview
Problem
Aircraft passenger seats require a balance between weight reduction and mechanical stability to meet safety guidelines, particularly in crash tests, while maintaining a compact external shape.
Innovation Solution
The design incorporates a support framework with a seat divider and cross rails, utilizing lightweight yet stable materials like aluminum or carbon-fiber composite materials, and a structural component with a composite plate component featuring gaps between cover plates to achieve mechanical stability with reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If lightweight construction materials like aluminum or carbon-fiber composite materials are used, then weight is reduced, but mechanical stability and strength may be compromised
Solution Approach 1:
The patent employs composite plate components made from lightweight materials such as aluminum or carbon-fiber composite materials that provide sufficient mechanical strength and stability while reducing overall weight. These composite materials enable the structural components to meet crash test requirements without sacrificing strength.
Solution Approach 2:
The patent implements material recesses in specific locations of structural components to reduce weight only where structurally permissible. This localized material removal maintains mechanical stability in critical areas while achieving weight reduction in non-critical regions, optimizing the strength-to-weight ratio.
2Weight of moving object
If components have recesses in the material to reduce weight, then weight is reduced, but structural integrity may be compromised
Solution Approach 1:
The patent strategically places material recesses in non-critical areas of structural components where weight reduction is permissible without compromising overall structural integrity. The recesses are positioned to maintain strength in load-bearing regions while reducing mass in secondary structures.
Solution Approach 2:
The structural components are divided into critical and non-critical regions, with recesses applied only to non-critical segments. This segmentation allows weight reduction through material removal while preserving the integrity of essential load-bearing structures.
3Reliability
If the seat divider and cross rails are made mechanically stable to absorb crash forces, then safety is improved, but weight increases
Solution Approach 1:
The seat divider and cross rails are constructed from high-strength composite plate components made of lightweight materials such as aluminum or carbon-fiber composites. These materials provide the necessary mechanical stability and crash force absorption capability while minimizing weight compared to traditional dense materials.
Solution Approach 2:
The patent optimizes the thickness, density, and material composition parameters of the structural components to achieve the minimum weight necessary for meeting crash test safety requirements. By carefully adjusting these parameters, the design achieves safety compliance with reduced weight.
Data Source
AI summary
An aircraft passenger seat including a support framework designed to be fastened to a floor in an aircraft passenger cabin. The support framework has a seat divider and cross rails running transversely to the seating direction, and the support framework is held by the cross rails, a housing including a structural component, and the housing at least partly surrounds a backrest. The structural component is provided on the seat divider, and includes a compound sheet component having one or more cover sheets, with a connecting structure provided between a plurality of cover sheets, more particularly between two cover sheets. The connecting structure creates gaps between the cover plates, and the volume of the gaps makes up at least 50% of the volume between the cover sheets of the compound sheet component.