Static Eliminator with Sealed Noble Gas Dielectric Shell
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Solution Overview
Problem
Aerospace devices, particularly satellites and space probes, face challenges in eliminating static electricity due to the difficulty in grounding, leading to potential dielectric breakdown and equipment failure, as conventional static discharge suppression methods are either expensive, prone to exfoliation, or ineffective in vacuum environments with high ambient pressures.
Innovation Solution
A static eliminator system that seals a noble gas within a dielectric shell surrounding the aerospace device, allowing electric discharge to occur internally and reducing the discharge starting voltage, thereby eliminating static electricity without relying on external conditions, using a dielectric shell that can withstand pressure differences and facilitate energy release through electromagnetic waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive materials or conductive coatings are used to prevent charging, then static electricity suppression is improved, but cost increases and the coating is prone to exfoliation and dissociation
Solution Approach 1:
The patent introduces a dielectric layer as an intermediary between the conductive base layer and the external environment. This dielectric layer prevents direct exposure of conductive materials that would cause charging, while allowing controlled discharge through its surface. The dielectric acts as a mediator that protects the conductive coating from exfoliation while maintaining static electricity suppression functionality.
Solution Approach 2:
The patent employs a composite structure consisting of a conductive base layer combined with a dielectric layer. This composite material approach allows the system to benefit from both the charge dissipation properties of conductive materials and the protective, stable characteristics of dielectric materials, preventing coating exfoliation while maintaining effectiveness.
2Reliability
If discharge electrodes are provided in the periphery of the dielectric, then surface discharge influence is suppressed, but the discharge starting voltage becomes extremely high in vacuum environments
Solution Approach 1:
The patent changes the physical parameters within the sealed space by introducing a gas atmosphere with different pressure characteristics than vacuum. This parameter change lowers the discharge starting voltage significantly, allowing discharge electrodes to function effectively. The gas-filled environment modifies the electrical breakdown characteristics, enabling discharge at much lower voltages compared to vacuum conditions.
Solution Approach 2:
The patent creates an inert, controlled atmosphere within the sealed space surrounding the dielectric. This enclosed environment protects the discharge electrodes from the harsh vacuum conditions of space while providing a stable gaseous medium that facilitates discharge at lower voltages. The inert atmosphere prevents unwanted chemical reactions and maintains consistent discharge characteristics.
3Reliability
If the dielectric surface is converted into plasma to eliminate potential difference, then static electricity is reduced, but the surface is destroyed and long-term operation is compromised
Solution Approach 1:
The patent provides beforehand protection by sealing the dielectric and discharge electrodes within a protected, sealed space filled with gas. This pre-established protective environment prevents direct exposure to harsh external conditions that would cause plasma formation and surface destruction. The sealed enclosure cushions the dielectric from damaging effects while allowing controlled discharge operations.
Solution Approach 2:
The sealed space with controlled atmosphere acts as an intermediary barrier between the dielectric surface and the external vacuum environment. This intermediary layer allows plasma formation and discharge to occur within the sealed space without directly exposing and destroying the dielectric surface, thereby extending operational lifespan while maintaining static electricity elimination functionality.
4Reliability
If sharp protruding parts are used for static discharge, then discharge effectiveness is improved, but safety is compromised when people come close to the fuselage
Solution Approach 1:
The patent embeds the discharge electrodes and dielectric structure within a sealed, enclosed space that is integrated into or mounted on the fuselage surface. This nesting approach allows the discharge mechanism to be contained within a protective housing, preventing direct exposure of sharp protruding parts to the external environment while maintaining discharge effectiveness within the sealed space.
Solution Approach 2:
The sealed enclosure acts as an intermediary barrier between the sharp discharge electrodes and external personnel. This intermediary structure allows the discharge mechanism to maintain its sharp, effective geometry for electricity dissipation while preventing direct contact with humans, thereby eliminating safety hazards associated with exposed protruding parts.
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 static electricity on aerospace devices by maintaining a lower discharge starting voltage, preventing dielectric breakdown and equipment failure, and allowing for long-term operation by converting electrical energy into heat, electromagnetic waves, and sound within the sealed environment.
Implementation Method 1
allowing for electric discharge to occur in the first space
Implementation Method 2
converting electrical energy into heat, electromagnetic waves, and sound
Implementation Method 3
using a dielectric shell that can withstand pressure differences
Implementation Method 4
seals a noble gas within a dielectric shell surrounding the aerospace device, allowing electric discharge to occur internally and reducing the discharge starting voltage
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
A static eliminator (10) includes: a first conductor (11) that is electrically connected to at least a part of a static elimination target object (1); and a dielectric shell (15) that forms, between the first conductor and the dielectric shell, a first space (13) in which a gas (12) providing a condition of lowering a discharge starting voltage is sealed. The dielectric shell is exposed to an external space (9), as examples may be dome-shaped, spherical, ellipsoidal, or semi-ellipsoidal, and may be translucent.