Aircraft Cabin Flooring With Resistive Static Discharge Mesh
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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 during discharge, 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 bleed off to the aircraft's common ground, preventing passenger charging and protecting against high current events like lightning strikes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-static treatments are applied to carpets, then electrostatic charge build-up is prevented, but the treatment requires frequent reapplication and faces environmental constraints
Solution Approach 1:
The invention extracts the anti-static function from temporary chemical sprays and integrates it into the permanent carpet structure through conductive threads woven during manufacturing. This creates a built-in conductive network that provides lasting electrostatic discharge capability without requiring external treatments.
Solution Approach 2:
The conductive thread network embedded in the carpet enables the flooring itself to provide electrostatic discharge functionality continuously. The system serves itself by maintaining conductive pathways through its inherent structure, eliminating the need for external anti-static agents or frequent maintenance interventions.
2Reliability
If conductive materials are used in flooring, then electrostatic discharge is enabled, but the risk of high current transmission to cabin systems increases
Solution Approach 1:
The invention changes the electrical resistance parameter of the flooring system by using high-resistance conductive threads and limiting the total conductive pathway resistance to specific ranges (10^6 to 10^9 ohms). This parameter optimization allows sufficient electrostatic discharge while inherently limiting high current transmission to safe levels.
Solution Approach 2:
The conductive thread network acts as an intermediary element between the insulating carpet and the aircraft structure. It provides a controlled discharge pathway that mediates between the need for electrostatic dissipation and the need to protect sensitive electronic systems from high current damage.
3Reliability
If wire mesh is added to flooring for conductivity, then electrostatic discharge is enabled, but the weight of the flooring increases
Solution Approach 1:
The invention uses thin, flexible conductive threads woven into the carpet structure instead of rigid wire mesh. These threads are integrated during manufacturing and provide the necessary conductive pathways with minimal weight addition, maintaining the flexibility and comfort of the carpet while enabling electrostatic discharge.
Solution Approach 2:
The invention creates a composite flooring structure combining insulating carpet materials with conductive thread elements. This composite approach integrates multiple functional properties (insulation, comfort, and conductivity) into a single lightweight system that leverages the advantages of different materials without the weight penalty of traditional wire mesh solutions.
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 within the aircraft cabin by allowing static charges to dissipate safely while preventing high current events from impacting the cabin, enhancing safety and reducing the need for frequent chemical treatments.
Implementation Method 1
a wire mesh, disposed immediately below the carpet layer and in electrically conductive contact with the carpet layer; and electronic circuitry, including at least one resistive element, for electrically connecting the wire mesh to a conductive structure of the aircraft
Implementation Method 2
the at least one resistive element is adapted to: allow transmission, from the wire mesh to the conductive structure, of electrostatic charges developed on the carpet layer, and impede transmission, from the conductive structure to the wire mesh, of high current events experienced by the aircraft
Data Source
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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. When the flooring arrangement is installed in the aircraft, 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.