Aircraft Cabin Floor Support Layout for Lighter Fuselage Stiffening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing aircraft floor arrangements are heavy and inefficient in space utilization, affecting the usable space and contributing to increased weight and fuel consumption, while also posing challenges in manufacturing and customization of cabin equipment.
Innovation Solution
A floor arrangement for aircraft cabins featuring two floor support part-structures with vertical and cantilevering members, longitudinal beam members, and seat rails, which transfer loads efficiently and reduce weight by optimizing space usage and allowing for customizable cabin equipment support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional continuous beam construction is used for the floor arrangement, then structural stability is ensured, but weight increases and usable space decreases
Solution Approach 1:
The floor arrangement is divided into two separate floor support part-structures (first and second) that run along opposing side portions of the fuselage. Each part-structure is independently supported by vertical support members, creating a segmented rather than continuous construction. This segmentation reduces the overall weight of the floor arrangement while maintaining structural stability through the distributed support system.
Solution Approach 2:
Cantilevering members extend in a second direction transverse to the longitudinal direction, creating a three-dimensional support framework. These members cantilever from the vertical support members to provide additional structural stability and load distribution without requiring additional weight in the longitudinal direction. This dimensional approach enhances stability while minimizing weight increase.
2Strength
If heavier floor construction is used, then structural strength is improved, but fuel consumption increases
Solution Approach 1:
The floor support system is segmented into multiple independent part-structures with discrete vertical support members spaced along the fuselage. This segmentation allows for optimized load distribution where strength is provided only where needed, rather than continuous heavy construction throughout. The reduced overall weight directly decreases fuel consumption while maintaining required strength through strategic support placement.
Solution Approach 2:
Vertical support members are positioned at specific locations along the fuselage to provide localized strength where loads are greatest. The floor support part-structures have varying characteristics along their length, with support members concentrated in high-load areas. This local quality approach ensures sufficient strength without the penalty of uniform heavy construction, thereby reducing fuel consumption.
3Stability of the object's composition
If more space is allocated for floor construction, then structural stability is improved, but usable cabin space decreases
Solution Approach 1:
The floor arrangement uses segmented floor support part-structures that are narrow and positioned along the side portions of the fuselage, rather than a wide continuous beam across the cabin. This segmentation minimizes the space occupied by the floor construction itself, maximizing usable cabin area while maintaining stability through the distributed vertical support members.
Solution Approach 2:
Cantilevering members extend transverse to the longitudinal direction, providing structural stability in the transverse dimension without occupying additional longitudinal space. This allows the floor arrangement to achieve enhanced stability while keeping the footprint in the cabin area minimal, preserving maximum usable space.
4Ease of manufacture
If standardized floor construction is used, then manufacturing cost is reduced, but adaptability for different cabin configurations decreases
Solution Approach 1:
The floor support part-structures are designed with universal features including standardized vertical support members and cantilevering members that can accommodate various cabin equipment configurations. The modular nature of the part-structures allows them to serve multiple functions and adapt to different cabin layouts while maintaining a standardized manufacturing approach, achieving both cost efficiency and versatility.
Solution Approach 2:
The floor arrangement incorporates adjustable and reconfigurable elements within the standardized part-structures. Seat rails and cabin equipment can be repositioned along the floor support members, allowing the same standardized construction to adapt to different cabin configurations. This dynamic adaptability maintains manufacturing simplicity while providing flexibility for various cabin arrangements.
Data Source
AI summary
An aircraft cabin floor arrangement includes two floor support part-structures, each having vertical support members, a beam member, cantilevering members and a seat rail. The beam member and the seat rail extend in a first direction with the seat rail being carried by the beam member. The cantilevering members cantilever in a second direction transverse to the first direction. The vertical support members extend in a third direction transverse to the first and second directions. The two floor support part-structures are each configured to be arranged along opposing side portions within an aircraft fuselage structure and are configured to transfer load from the cantilevering members and the beam member to the fuselage structure. The cantilevering members and the beam member are configured to carry a cabin floor configured to provide a load transfer in a plane direction of the floor and to contribute to a stiffening of the fuselage structure.