Aircraft Section Rapid Decompression Architecture for Simple Sidewalls
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Solution Overview
Problem
Conventional aircraft cabin air removal and decompression systems require complex structures that are time-consuming and expensive to develop and certify, necessitating additional admission processes.
Innovation Solution
An aircraft section design featuring a sidewall with a specific gap above the cabin floor and a rapid decompression unit mounted to the primary structure and cabin floor, allowing air flow without complex sidewall structures, with a simple flap mechanism for rapid decompression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex structures and panels with rapid decompression units are integrated into the sidewall, then rapid decompression capability is improved, but device complexity and certification requirements increase
Solution Approach 1:
The rapid decompression unit is separated from the sidewall structure. Instead of integrating the decompression mechanism into the sidewall panel, the patent positions the rapid decompression unit independently between the sidewall and primary structure, allowing the sidewall to remain a simple covering component while the decompression unit handles the rapid pressure equalization function
Solution Approach 2:
The complex rapid decompression mechanism is extracted from the sidewall assembly. The sidewall is reduced to a simple covering structure without integrated panels or grills, while the rapid decompression unit is positioned independently in the space between the sidewall and primary structure, eliminating the need for complex admission and certification processes for the sidewall itself
2Productivity
If complex structures and panels are used for air removal, then air removal capability is improved, but manufacturing time and cost increase
Solution Approach 1:
The air removal function is segmented between the simple sidewall structure and the independent rapid decompression unit. The sidewall maintains a basic covering function with a bottom edge positioned at a specific distance above the cabin floor, while the rapid decompression unit handles the active air removal and pressure equalization, simplifying manufacturing of the sidewall component
Solution Approach 2:
The complex air removal mechanisms (slit panels, grills) are extracted from the sidewall design. The sidewall becomes a simple covering structure, and the air removal function is achieved through the independently positioned rapid decompression unit, reducing manufacturing complexity and certification requirements for the sidewall itself
3Volume of moving object
If the sidewall bottom edge is positioned close to the cabin floor, then space utilization is improved, but air flow volume is reduced
Solution Approach 1:
The sidewall bottom edge is positioned at a specific distance (1-3 inches) above the cabin floor to create an optimized gap for air flow. This local positioning provides sufficient volume flow for air exchange while maintaining efficient use of cabin space, balancing air flow requirements with spatial constraints
4Productivity
If the rapid decompression unit is mounted close to the sidewall, then space utilization is improved, but air flow capability is reduced
Solution Approach 1:
The rapid decompression unit is mounted at a specific distance (1-2 inches) from the sidewall to create an optimized gap. This local spacing provides sufficient volume flow for rapid air exchange while maintaining compact space utilization in the aircraft section
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Simplifies the sidewall design, reducing certification and manufacturing costs while ensuring efficient air removal and rapid decompression capabilities.
Implementation Method 1
a first distance between the bottom edge and the cabin floor is between 1 inch and 3 inch... The gap between the cabin floor and the bottom edge of the sidewall allows an air flow from the passenger cabin towards an area behind the sidewall
Implementation Method 2
a second distance between the sidewall and a portion of the rapid decompression unit closest to the sidewall is between 1 inch and 2 inch... the exhaust air removed from the passenger cabin flows through the gap between the bottom edge of the sidewall and the cabin floor and along the rapid decompression unit
Data Source
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AI summary
The present disclosure relates to an aircraft section (100) comprising a primary structure (150) forming at least a portion of an aircraft fuselage, a cabin floor (120) coupled to the primary structure (150), a sidewall (110) covering at least a portion of the primary structure (150), and a rapid decompression unit (130) arranged between the sidewall (110) and the primary structure (150). The sidewall has a certain distance to the cabin floor and the rapid decompression unit has a certain distance to the sidewall.