Helicopter Deck Drainage Segmentation for Fire Safety
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Solution Overview
Problem
Existing helicopter deck drainage systems face issues with clogging, corrosion, and reduced capacity due to metal chips in drain channels, which can lead to damage from heat and require resource-intensive replacements, while also being vulnerable to water supply limitations in certain regions.
Innovation Solution
A draining top cover with detachable extruded sections and a fluid-tight floor, featuring drain openings and channels that restrict air access to reduce flame spread, allowing for easy replacement of damaged sections and minimizing resource usage, and incorporating a collecting channel system that can be retrofitted onto existing decks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal chips are used in drain channels to reduce oxygen access and flame spread, then fire-retardant effect is improved, but clogging by dirt and foreign bodies occurs over time reducing drainage capacity
Solution Approach 1:
The drain channel is divided into two functional zones: a first section filled with metal chips for fire-retardant effect, and a second section free of metal chips for unobstructed drainage. This segmentation allows each zone to perform its specific function optimally without interfering with the other, resolving the contradiction between fire protection and drainage capacity.
2Reliability
If metal chips are used in drain channels to reduce oxygen access, then flame spread is reduced, but corrosion in channels occurs due to lack of ventilation
Solution Approach 1:
The drain channel is segmented into a fire-retardant section with metal chips and a ventilation section without metal chips. The ventilation section allows air circulation that prevents corrosion, while the metal chip section provides fire protection. This spatial segmentation resolves the contradiction between fire-retardant effect and corrosion prevention.
3Reliability
If drain channels are damaged because of heat generation, then supporting structure must be replaced, but replacement is resource-demanding
Solution Approach 1:
The drain channel is segmented into sections with different functions: fire-retardant sections with metal chips for heat protection, and chip-free sections for drainage. This segmentation allows the fire-retardant portions to protect the supporting structure from heat damage, reducing the need for resource-intensive replacements.
Solution Approach 2:
The metal chips act as an intermediary layer between the flammable fluid and the supporting structure. They provide fire-retardant protection by limiting oxygen access to the fluid, thereby protecting the supporting structure from heat damage and reducing replacement needs.
4Reliability
If water supply is reduced by icing or biological growth, then active fire protection is compromised, but passive fire protection is desired
Solution Approach 1:
The drain channel system provides self-service fire protection through its passive fire-retardant design. The metal chips in the first section automatically limit oxygen access to flammable fluid without requiring external water supply or active intervention. This passive mechanism ensures fire protection reliability even when water supply is compromised by environmental factors.
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 effectively contains fires by draining flammable fluids and limiting oxygen access, maintaining structural integrity and reducing damage, with the top cover sections being easily replaceable and designed for manual handling, and operates efficiently without significant water usage.
Implementation Method 1
a flammable fluid is rapidly drained away from the surface of the helicopter deck into a suitable collection channel
Implementation Method 2
the exposure of the fluid to air being restricted with the purpose of reducing the extent of damage in a possible fire
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A device for a helicopter deck (1) comprising a supporting, fluid-tight floor (3) is described, the helicopter deck (1) comprising an overlying, draining top cover (2) formed out of at least two top-cover sections (20) arranged side by side, each of the top-cover sections (20) comprising a surface portion (22) provided with several drain openings (23) and at least one channel wall (21, 21') projecting downwards, provided with a foot portion (211, 211') which is arranged to be positioned on the surface (33) of the floor (3); at least one drain channel (5) defined by the top cover (2), the floor (3) and two adjacent channel walls (21, 21'), the drain channel (5) being provided with a mouth portion (51) which is connected to a collecting channel (4); fluid- transport paths (6) being formed through the at least one drain channel (5) between the drain openings (23) and a drain (42) in the collecting channel (4); and the top- cover sections (20) being detachable from the floor (3) and adjacent top-cover sections (20).