Fuselage Hollow Beam Air Ducting for Leak-Safe Space Saving
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Solution Overview
Problem
Aircraft fuselage ventilation and air conditioning systems face challenges with flexible hoses and pipes that occupy valuable space, are prone to air leakage, and are difficult to maintain, especially in complex regions like the cockpit, where manufacturing tolerances lead to inefficiencies and limited reparability.
Innovation Solution
The integration of a hollow beam element with a tubular duct element wall and protective spacers allows for efficient air ducting, reducing the need for additional fasteners, minimizing weight, and enabling easy installation, exchange, and repair of air ducts, while maintaining air tightness and reducing installation space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If flexible hoses and pipes are used for air ducting, then installation flexibility is improved, but installation space requirements increase and air leakage risk worsens
Solution Approach 1:
The hollow duct element is nested inside the hollow beam element, with the duct element fitting within the internal cavity of the beam element. This nesting arrangement eliminates the need for separate installation space for air ducts, as they share the same structural volume, thereby reducing overall installation space requirements while maintaining installation flexibility through the modular nested design
2Adaptability or versatility
If flexible hoses and pipes are used for air ducting, then routing adaptability is improved, but air leakage risk worsens
Solution Approach 1:
The air duct system utilizes composite construction where the hollow duct element and hollow beam element are both made from fiber-reinforced plastic materials. This composite material approach provides inherent air tightness while maintaining routing adaptability, as the composite structure can be molded into various shapes and configurations without compromising sealing integrity, eliminating air leakage risks associated with flexible hoses
3Adaptability or versatility
If multiple interconnected components are used for air conditioning system, then system functionality is improved, but assembly time and cost worsen
Solution Approach 1:
The hollow beam element and hollow duct element are designed as integrated components where the duct element is nested within the beam element structure. This merging of structural and functional elements reduces the number of separate components that need to be assembled, thereby reducing assembly time and cost while maintaining full air conditioning system functionality through the integrated design
4Volume of stationary object
If hollow beam elements with nested hollow duct elements are used, then installation space is reduced, but manufacturing complexity worsens
Solution Approach 1:
The integrated hollow beam element with nested hollow duct element is segmented into separate manufacturable components that are assembled together. The hollow beam element and hollow duct element can be manufactured independently using fiber-reinforced plastic molding processes, then assembled by nesting the duct element within the beam element, thereby reducing manufacturing complexity while achieving the space-saving integrated configuration
Data Source
AI summary
An aircraft with a fuselage that comprises at least one hollow beam element, wherein the at least one hollow beam element accommodates at least one hollow duct element that comprises a tubular duct element wall, and wherein at least one protective spacer is arranged between the tubular duct element wall and the at least one hollow beam element such that free space is available between the tubular duct element wall and the at least one hollow beam element.