Lightning Protection Garment with Localized Conductivity
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Solution Overview
Problem
Current protective garments fail to effectively reduce the number of deaths caused by cardiopulmonary arrest resulting from lightning strikes, as they lack features to manage the high current flow and short duration of lightning strikes effectively.
Innovation Solution
A cardiopulmonary lightning protection garment with a fast flashover facilitating, electrically conductive shield covering the upper body and a grounding member that directs electrical charge away from the heart to the ground, utilizing a region of limited conductivity near the heart and a grounding strap with a weighted end for stable contact with the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrically conductive shield is used to protect against lightning, then electrical charge is directed away from vital organs, but the garment lacks features to manage the high current flow and short duration of lightning strikes effectively
Solution Approach 1:
The garment incorporates a region of limited conductivity positioned over the heart area, creating localized differential conductivity properties. This allows the shield to direct electrical charge away from vital organs while managing the high current flow characteristics of lightning strikes, resolving the contradiction between general protection effectiveness and specific lightning strike management capability
Solution Approach 2:
The grounding member provides a conductive path to dissipate electrical charge to the ground, enhancing the garment's ability to manage lightning strike currents
2Reliability
If a protective garment covers the entire body with conductive material, then comprehensive protection is achieved, but the garment becomes less wearable and more complex
Solution Approach 1:
Instead of uniform full-body coverage, the garment applies conductive materials strategically - a shield covering the upper body and torso where vital organs are located, and a grounding member for charge dissipation. This localized approach maintains comprehensive protection for critical areas while improving wearability and reducing complexity
Solution Approach 2:
The protective garment is segmented into functional components: an electrically conductive shield for charge redirection and a grounding member for dissipation. This segmentation allows each component to be optimized for its specific function while maintaining overall protection effectiveness and wearability
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 garment reduces the risk of cardiopulmonary arrest by facilitating a fast flashover, dissipating electrical energy away from the heart and down to the ground, thereby enhancing survival chances during a lightning strike.
Implementation Method 1
a fast flashover facilitating, electrically conductive shield covering at least an upper portion of the body and having a region of limited conductivity for directing electrical charge away from the heart
Implementation Method 2
The garment includes a grounding member providing a movable connection between the garment's conductive shield and a local ground plane, such as the Earth
Data Source
AI summary
A cardiopulmonary lightning protection garment fabricated of an electrically conductive textile, or other suitable body shielding material, forms a fast flashover facilitating, electrical shield of at least an upper portion of the body, and includes a region of reduced conductivity adjacent the wearer's heart. The protective garment also includes a grounding member providing a movable connection between the conductive body shield and a local ground plane. Various configurations of the basic garment are contemplated, including a hooded jacket, hooded raincoat, padded vest, rain poncho, and the like. In various embodiments, the grounding member is a strap-like tail attached to the electrical body shield at an upper end, and having a weighted lower end for maintaining a sliding contact with the ground. In other embodiments, the lower end is attached to a wearer's shoe.