Aircraft Decompression Panel Assembly with Annular Baffles
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Solution Overview
Problem
Existing decompression panels in aircraft are heavy, require large volumes for deployment, and suffer from noise transmission, dust accumulation, and potential passenger abuse due to louvered configurations and insecure baffle attachments.
Innovation Solution
A decompression panel assembly featuring annular baffle elements continuously attached to panels via adhesive, forming air-tight seals and hidden louver members to minimize noise and dust visibility, with designed fracture zones for airflow during decompression events, reducing weight and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solid panels with movable decompression panels are used, then airflow restriction in standard operation is achieved, but weight increases and deployment volume requirement increases
Solution Approach 1:
The decompression panel is segmented into multiple independent openings rather than a single solid panel. Each opening can independently restrict or allow airflow, providing the same functional reliability as a solid panel while significantly reducing weight and deployment volume requirements.
Solution Approach 2:
Different regions of the decompression panel have different properties - the openings provide airflow restriction when closed, while the baffle elements provide noise attenuation when deployed. This local differentiation allows the panel to achieve multiple functions without requiring a solid panel structure.
2Reliability
If louvered configurations are used, then airflow restriction is achieved, but dust accumulation surface increases and passenger abuse potential increases
Solution Approach 1:
The harmful aspects of louvered configurations (exposed surfaces for dust accumulation and abuse) are extracted and removed by covering them with aesthetic panel surfaces. The functional airflow restriction is maintained through the baffle element mechanism, while the visual and protective surfaces are provided by the panel materials.
3Ease of manufacture
If baffle is connected to grille at discrete points, then assembly simplicity is maintained, but noise transmission increases due to resonance
Solution Approach 1:
The baffle elements are continuously attached to the panel surfaces rather than being discrete point connections. This continuous attachment merges the baffle and panel into a unified structure that effectively blocks noise transmission while maintaining manufacturing simplicity through the use of adhesive materials.
4Reliability
If electronically connected or pressure sensitive mechanical latch systems are used, then decompression function is achieved, but device complexity and cost increase
Solution Approach 1:
The decompression panel operates autonomously without requiring external electronic or mechanical latch systems. The pressure differential automatically drives the baffle elements to open or close the openings as needed, making the system self-regulating and eliminating complex control mechanisms.
Solution Approach 2:
Electronic and complex mechanical latch systems are replaced with a simpler pressure-driven mechanical mechanism. The pressure differential directly acts on the baffle elements to control airflow, substituting complex control systems with a direct physical response to pressure changes.
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
The solution provides a lightweight, cost-effective, and aesthetically improved decompression panel assembly that effectively manages airflow and noise while minimizing passenger access and dust accumulation, ensuring efficient pressure equalization during decompression events.
Implementation Method 1
coupled to the backside of the grille opening(s) to decrease the noise in the cabin and can release from the grille during a decompression event
Implementation Method 2
decompression panels or decompression grills that restrict such airflow in standard operation
Implementation Method 3
enable the airflow during a decompression event
Data Source
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AI summary
A decompression panel assembly (106) for use in an aircraft includes a body panel (114) having an opening (116) defined therein and a cover panel (118) positioned within the opening and spaced from the body panel. The decompression panel assembly also includes an annular spacer panel (122) positioned outboard from the cover panel and the body panel. The spacer panel is spaced from the cover panel to define a first annular flow path (128) between the cover panel and the spacer panel, and the spacer panel is spaced from the body panel to define a second annular flow path (130) between the body panel and the spacer panel.