Aircraft Fuselage Stringer Fluid Channel Integration
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Solution Overview
Problem
The existing cabin air distribution systems in aircraft require a substantial number of ducts, which occupy valuable space, increase weight, and complicate the fuselage structure, necessitating extensive insulation and assembly time.
Innovation Solution
Integrating stringers that form fluid channels to serve as part of the distribution ducts, eliminating the need for a fishbone configuration and allowing for parallel stringers to minimize weight and space while maintaining structural integrity and air distribution efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional fishbone configuration of outlet ducts is used, then air distribution to cabin vents is achieved, but the ducts occupy substantial volume and reduce cabin space
Solution Approach 1:
The patent merges the air distribution ducting with the fuselage structure by integrating outlet ducts into the frame members. The frame members are configured to define fluid passages that serve as both structural support elements and air distribution conduits, eliminating the need for separate fishbone configuration ducts and thereby preserving cabin space.
Solution Approach 2:
The frame members perform dual functions: providing structural support for the fuselage and serving as air distribution ducts. This multi-functionality allows the same components to fulfill both structural and environmental control roles, reducing the overall volume required for air distribution systems.
2Ease of operation
If separate ducts are provided for air distribution, then air supply to cabin is achieved, but the number of components and assembly time increase
Solution Approach 1:
The patent combines multiple functions into the frame members, which simultaneously provide structural support and air distribution. This integration reduces the number of separate components that need to be assembled, thereby reducing assembly time and complexity.
3Ease of operation
If traditional ducting is used, then air distribution is achieved, but weight increases
Solution Approach 1:
By merging the air distribution function into the existing frame members, the patent eliminates the need for additional separate ducts. This reduces the total weight of the fuselage structure while maintaining air distribution capability.
4Ease of operation
If ducts are provided for air distribution, then air supply is achieved, but insulation requirements increase
Solution Approach 1:
The patent integrates air distribution ducting within the frame member structure, reducing the overall surface area requiring insulation. The insulated cavity within the frame member serves dual purposes: providing thermal insulation for the air passage and maintaining structural integrity.
Data Source
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AI summary
The present application relates to a fuselage assembly for an aircraft. The fuselage assembly has a stringer extending longitudinally along the fuselage. The stringer defines a fluid channel. The fluid channel is configured to form at least part of a distribution duct of a cabin air distribution system. The present application also relates to a cabin air distribution system, a frame for an aircraft fuselage, and an aircraft. The frame can also comprise a fluid duct and a skin mounting section configured to mount to a skin of the aircraft fuselage, wherein the fluid duct is spaced from the skin mounting section.