Reactive Material Breaching Device for Underwater Metal Cutting
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Solution Overview
Problem
Current devices for cutting and welding metals, especially in clandestine or underwater operations, are either cumbersome, require advance planning, or cause environmental and safety concerns due to the use of high explosives, and lack the capability to convert standard service guns for these purposes.
Innovation Solution
A device that converts a handgun or other weapon to use reactive materials like thermite compositions for cutting and welding, with heat-resistant components and adaptive nozzles, allowing for clandestine operation and efficient metal breaching without explosives, including a rotating/oscillating breaching device for underwater use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high explosives are used for metal cutting and breaching, then cutting power and breaching capability are improved, but environmental damage and safety hazards increase
Solution Approach 1:
The invention changes the chemical composition parameters of the reactive material from conventional high explosives to thermite-based compositions with controlled oxygen and metal powder ratios, achieving high-temperature cutting without explosive shock waves that cause environmental damage
Solution Approach 2:
The invention converts the harmful explosive shock wave effect into beneficial high-temperature exothermic reaction, where the chemical energy of thermite reaction is directly applied to melt and cut metal without creating destructive blast waves that harm the environment
2Power
If specialized breaching devices are used, then cutting capability is improved, but device complexity and advance planning requirements increase
Solution Approach 1:
The invention makes the handgun barrel universal by enabling it to perform both normal firearm functions and metal cutting functions through the use of reactive material cartridges, eliminating the need for specialized breaching devices
Solution Approach 2:
The invention introduces reactive material cartridges as an intermediary that can be loaded into standard handgun barrels, providing specialized cutting capability without modifying the fundamental structure of the firearm
3Adaptability or versatility
If reactive material cartridges are fired from standard guns, then adaptability and ease of operation are improved, but barrel heat resistance requirements worsen
Solution Approach 1:
The invention applies local quality by protecting only the specific portion of the barrel that contacts the reactive material with heat-resistant coating, rather than requiring the entire barrel to withstand extreme temperatures
Solution Approach 2:
The invention treats the reactive material cartridge as a disposable component that contains the extreme heat generation, allowing the use of standard barrels with minimal modification through protective coatings
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
Enables efficient, safe, and clandestine cutting and welding of metals in various environments, reducing the risk of environmental damage and operational hazards, while maintaining the functionality of the weapon for normal use.
Implementation Method 1
a Reactive Material (RM), which is a thermite composition including a metallic powder and an oxidizer which, when ignited, produces an exothermic oxidation-reduction reaction
Data Source
AI summary
A breaching device for non-explosively cutting through a substrate, such as the leg of an offshore oil platform or other large cylinder from within the leg or large cylinder. The device includes a ring and a plurality of Reactive Material (RM) feed assemblies. Each RM feed assembly is arranged around the ring and includes an extendible nozzle. Each RM feed assembly includes a cavity that may contain RM that when ignited exits the nozzle. The nozzles are spring loaded and arranged to extend toward the inner surface of the substrate to be cut when the ring is rotated and/or oscillated. This arrangement results in a substantially uniform cut of the substrate from within with much less danger, material, equipment and cost than is currently required to remove large water-based structures.