Conductive Fiber Dust Mitigation for Flexible Surfaces
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Solution Overview
Problem
Existing dust mitigation systems are ineffective for flexible and complex surfaces like spacesuits due to their irregular contours and soft areas, and they struggle to remove lunar dust, which causes contamination, mechanical issues, and health hazards during extravehicular activities.
Innovation Solution
A Dust Mitigation System (DMS) utilizing conductive fibers, such as carbon nanotubes, integrated into fabric materials, which generate an electric field and traveling wave to repel dust particles by creating electrostatic and electrodynamic forces, compatible with flexible and complex surfaces like spacesuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing dust mitigation systems are applied to flexible surfaces like spacesuits, then dust removal capability is improved, but system compatibility and effectiveness deteriorate due to irregular contours and soft areas
Solution Approach 1:
The patent applies flexible conductive fibers woven into fabric materials that can conform to irregular contours and soft surfaces. The conductive fibers are integrated directly into the fabric structure, allowing the dust mitigation system to adapt to any surface geometry while maintaining electrical conductivity for dust repulsion.
Solution Approach 2:
The patent creates a composite material by weaving conductive fibers (such as carbon nanotubes or metal-coated fibers) with fabric materials. This composite structure combines the mechanical flexibility and surface-conforming properties of fabric with the electrical conductivity needed for electrostatic dust repulsion, achieving both adaptability and dust removal capability.
2Reliability
If rigid dust mitigation systems are used on flexible spacesuit surfaces, then dust repulsion effectiveness is improved, but mechanical compatibility and durability worsen
Solution Approach 1:
The conductive fibers are woven into the fabric structure itself, creating a flexible system that moves with the spacesuit. This eliminates the mechanical incompatibility between rigid dust mitigation systems and flexible surfaces, while maintaining the electrical conductivity required for reliable dust repulsion through electrostatic forces.
Solution Approach 2:
The patent replaces rigid mechanical dust removal systems with an electrostatic field-based approach using conductive fibers. This substitution eliminates the need for physical contact between rigid structures and flexible surfaces, maintaining dust repulsion effectiveness while ensuring mechanical compatibility through non-contact electrostatic interaction.
3Productivity
If conventional dust mitigation methods are applied to lunar dust, then dust removal is improved, but contamination and mechanical damage increase due to lunar dust properties
Solution Approach 1:
The patent converts the harmful adhesive properties of lunar dust into a benefit by using electrostatic forces to actively repel dust particles before they can adhere. The conductive fibers generate an electrostatic field that counteracts the natural adhesion of lunar dust to surfaces, preventing contamination and mechanical damage before they occur.
Solution Approach 2:
The conductive fibers continuously generate an electrostatic repulsive field that acts as a preliminary protective barrier against lunar dust. This preliminary anti-action prevents dust particles from approaching and adhering to the surface, eliminating the need for subsequent cleaning operations and preventing mechanical damage from dust abrasion.
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 DMS effectively repels and removes dust from surfaces, preventing further accumulation and reducing contamination, mechanical issues, and health hazards, while being adaptable to various surface contours and flexible materials.
Implementation Method 1
The plurality of conductive-fibers are configured to generate an electric-field on the front-surface of the fabric-material in response to the plurality of input-nodes receiving the AC voltage-signal
Implementation Method 2
a traveling-wave (from the electric-field) that travels along the front-surface of the fabric-material
Data Source
AI summary
A Dust Mitigation System (“DMS”) is disclosed that includes a fabric-material having a front-surface and a back-surface; a plurality of conductive-fibers within the fabric-material; and a plurality of input-nodes approximately adjacent to the back-surface or the front-surface of the fabric-material. The plurality of conductive-fibers are approximately parallel in a first direction along the fabric-material and are approximately adjacent to the front-surface of the fabric-material and the plurality of input-nodes are in signal communication with the plurality of conductive-fibers and configured to receive an alternating-current (“AC”) voltage-signal from an input-signal-source. The plurality of conductive-fibers are configured to generate an electric-field on the front-surface of the fabric-material in response to the plurality of input-nodes receiving the AC voltage-signal from the input-signal-source and a traveling-wave (from the electric-field) that travels along the front-surface of the fabric-material in a second direction that is transverse to the first direction.