Aircraft Decompression Panel With Elastomer Flap Self-Resetting
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Solution Overview
Problem
Existing decompression panels in aircraft require complex mechanical mechanisms to open and close during rapid pressure changes, necessitating post-decompression resetting and maintenance.
Innovation Solution
A decompression panel with a flap connected to a frame via an elastomer part, which moves between closed and open positions due to pressure differences, utilizing elastomer compression and elasticity to automatically adjust to pressure changes without mechanical systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex mechanical mechanism is used to retain and move the flap during rapid decompression, then the flap can be reliably opened and closed, but the device complexity increases and post-decompression resetting is required
Solution Approach 1:
The patent extracts and eliminates the complex mechanical retaining and resetting mechanism from the decompression panel system. Instead of using mechanical springs, latches, or actuators to hold and release the flap, the invention relies solely on the pressure differential across the flap to drive its opening and closing movements, thereby removing the disturbing mechanical components while preserving the essential function
Solution Approach 2:
The decompression panel is designed to be self-operating through the natural pressure differential that occurs during rapid decompression events. The pressure difference automatically pushes the flap open when needed and allows it to close when pressure equalizes, without requiring external mechanical assistance or manual resetting. The system serves itself using the environmental condition (pressure difference) rather than complex mechanical control
2Stability of the object's composition
If a mechanical retaining system is used to hold the flap in closed position, then the flap remains securely closed, but the system requires post-decompression resetting operations
Solution Approach 1:
The flap's closed position stability is maintained passively through the pressure differential and the flap's own weight/geometry rather than active mechanical retention. When pressure equalizes after decompression, the flap naturally returns to closed position without requiring mechanical resetting, making the system self-resetting and eliminating post-decompression operational requirements
3Manufacturing precision
If numerous mechanical parts are used to control flap movement, then precise flap positioning is achieved, but the ease of manufacture and maintenance deteriorates
Solution Approach 1:
The invention removes all mechanical positioning and control parts from the system, leaving only the essential flap and frame structures. The flap positioning precision is achieved through the natural physics of pressure differential and simple geometric constraints rather than through multiple mechanical components, thereby dramatically simplifying manufacturing while maintaining functional precision
Solution Approach 2:
The system uses changes in pressure parameters to control flap position rather than mechanical adjustments. The flap moves between positions in response to pressure differential magnitude, allowing precise positioning through environmental parameter changes rather than mechanical component adjustments, which simplifies both manufacturing and maintenance
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 panel simplifies operations by automatically moving to open and closed positions based on pressure differences, reducing damage risks and eliminating the need for post-decompression resetting, while maintaining operational readiness.
Implementation Method 1
the elastomer part is compressed, which generates a movement of the flap relative to the frame in such a manner as to move it into its open position
Implementation Method 2
the elastomer part reverts to its initial nominal shape (because of its intrinsic elasticity), thereby returning the flap into its closed position
Data Source
AI summary
A decompression panel includes a frame provided with an opening and a flap connected to the frame by a connecting system comprising at least one elastomer part provided with a plurality of fixing elements fixing together the elastomer part, the frame, and the flap. The flap is moved from a closed position in which it completely closes the opening to an open position in which it partially frees the opening because of the effect of a pressure difference between the two sides of the decompression panel in the event of rapid decompression.