Aircraft Cabin Flooring With Resistive Mesh for Static Discharge
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Solution Overview
Problem
Aircraft cabin carpets often lead to electrostatic charge buildup due to non-conductive surfaces, which can cause discomfort and damage to electronic systems, and existing anti-static treatments are not economically or ecologically sustainable due to frequent reapplication needs and environmental constraints.
Innovation Solution
Incorporating a lightweight wire mesh into the flooring, bonded to the aircraft structure via resistors, to provide a conductive path for static charges to discharge safely, while preventing high current events from propagating back into the cabin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-static treatment is applied to carpet, then electrostatic charge build-up is prevented, but the treatment requires frequent reapplication and faces environmental constraints
Solution Approach 1:
The patent extracts the anti-static function from temporary chemical treatments and embeds it into a permanent wire mesh structure integrated into the flooring system. The conductive wire mesh provides continuous electrostatic discharge capability without requiring periodic reapplication, thereby eliminating maintenance frequency issues while maintaining reliable ESD prevention.
Solution Approach 2:
The patent replaces chemical anti-static treatments with a physical/conductive wire mesh system. Instead of relying on chemical coatings that degrade over time, the solution uses a permanent conductive infrastructure that provides lasting electrostatic discharge pathways, substituting a mechanical/structural system for a chemical one.
2Reliability
If wire mesh is bonded directly to aircraft structure, then conductive path is provided, but high current events can propagate back into the cabin
Solution Approach 1:
The patent introduces resistive elements as intermediary components between the wire mesh and the aircraft structure. These resistors act as mediators that allow normal electrostatic discharge currents to pass through while blocking high current events such as lightning strikes from propagating back into the cabin, thus protecting sensitive electronic systems.
Solution Approach 2:
The patent changes the electrical parameter (resistance) of the connection between the wire mesh and aircraft structure. By incorporating resistive elements with specific resistance values, the system allows low-level ESD currents to dissipate while impeding high-current events, effectively using parameter control to differentiate between normal and hazardous current levels.
3Ease of operation
If carpet is made non-conductive for comfort, then passenger comfort is improved, but electrostatic charge builds up on the surface
Solution Approach 1:
The patent segments the flooring system into distinct functional layers: an insulating carpet layer for passenger comfort and a separate conductive wire mesh layer for electrostatic discharge. This segmentation allows each layer to perform its specialized function without compromise—the carpet provides comfort while the mesh handles ESD management.
Solution Approach 2:
The wire mesh acts as an intermediary layer between the insulating carpet and the aircraft structure. It provides a conductive pathway that captures electrostatic charges from the carpet without requiring the carpet itself to be conductive, thus maintaining passenger comfort while preventing charge build-up.
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
Effectively reduces electrostatic discharge in aircraft cabins, ensuring passenger safety and protecting electronic systems without the need for frequent reapplication of anti-static treatments, thus providing a sustainable solution.
Implementation Method 1
provide a conductive path for static charges to bleed off through an aircraft common ground
Implementation Method 2
the wire mesh being in electrically conductive contact with the carpet layer and being electrically connected to a conductive structure of the aircraft via the at least one resistive element
Implementation Method 3
The resistance configuration allows charges built-up on the carpet to bleed to the ground, while also impeding electricity impacting on the aircraft (e.g. lightning strikes) from conducting back through the wire mesh into the cabin
Data Source
AI summary
A flooring arrangement for an aircraft cabin and an aircraft with the flooring arrangement. The flooring arrangement at least one insulating layer for insulating the cabin; a wire mesh disposed above the at least one insulating layer; a carpet layer disposed above the wire mesh, the carpet layer and the wire mesh being in electrically conductive contact; and at least one resistive element connected to the wire mesh, the wire mesh being structured and arranged for being electrically connected to a conductive structure of the aircraft via the at least one resistive element. The resistive element allows transmission, from the wire mesh to the conductive structure, of electrostatic charges developed on the carpet layer, and impedes transmission, from the conductive structure to the wire mesh, of high current events experienced by the aircraft.