Disrupter Cannon Piston Mechanism for Liquid Projectile Force
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Solution Overview
Problem
Disrupter cannons face challenges in delivering a sufficient force with liquid projectiles, generating excessive powder residue that interferes with the firing assembly, and requiring frequent maintenance and tool-assisted reloading.
Innovation Solution
The disrupter cannon employs a piston mechanism to increase the force of liquid projectiles, incorporates a seal and plate configuration to reduce residue entry into the firing assembly, and uses a slow-burn pyrotechnic profile to facilitate easier breech cap removal and reduce maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a liquid projectile is used in the disrupter cannon, then the disrupter cannon can disable explosive devices, but the force of delivery of the liquid projectile is insufficient
Solution Approach 1:
A piston is introduced as an intermediary component between the propellant charge and the liquid projectile. The piston receives the expanding gas pressure from the propellant and transfers it to the liquid projectile, enabling effective force transmission while preventing gas from directly contacting and potentially compromising the liquid projectile or firing assembly.
Solution Approach 2:
The firing assembly is segmented into distinct functional zones: a propellant chamber for the propellant charge, a piston chamber for the piston movement, and a barrel section for liquid projectile containment. This segmentation allows each component to perform its specific function optimally without interference from other components.
2Productivity
If a propellant charge is used to propel the liquid projectile, then the liquid projectile can be delivered, but excessive powder residue enters the firing assembly and interferes with operation
Solution Approach 1:
The piston serves as a physical barrier and intermediary that prevents the expanding propellant gas and its residue from directly entering the firing assembly. The piston seals against the propellant gas, forcing the gas to work on the piston rather than bypassing into the firing mechanism area, thereby protecting the firing assembly from residue contamination.
Solution Approach 2:
The harmful propellant gas and residue are extracted or contained within the propellant chamber by the piston barrier, preventing them from contaminating the firing assembly. The piston effectively separates the dirty propellant combustion environment from the clean firing assembly environment.
3Ease of operation
If a conventional pyrotechnic profile is used, then the disrupter cannon can fire, but the breech cap requires tools for removal and frequent maintenance is needed
Solution Approach 1:
The pyrotechnic composition is modified to burn more slowly and completely, changing the temporal and thermal parameters of the combustion process. This slow-burn profile reduces peak pressures and temperatures, allowing the breech cap and other components to cool sufficiently for safe, tool-free removal while reducing thermal stress and residue buildup that would otherwise require frequent maintenance.
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 solution enhances the effectiveness of liquid projectiles by delivering greater force, reduces residue-related operational issues, and allows for more frequent use without cleaning, while enabling tool-free breech cap removal and reduced maintenance.
Implementation Method 1
A disrupter cannon may include a piston to increase a force of a liquid projectile delivered to an explosive device
Implementation Method 2
incorporates a seal and plate configuration to reduce residue entry into the firing assembly
Implementation Method 3
uses a slow-burn pyrotechnic profile to facilitate easier breech cap removal and reduce maintenance needs
Data Source
AI summary
Systems and methods for preparing a cartridge and a projectile for use in a disrupter to launch the projectile toward an explosive device to disable the explosive device. The cartridge may be selected from a group of cartridges and the projectile may be selected from a group of projectiles in accordance with the type of explosive device, the projectile selected, or other considerations for attempting to disable the explosive device. The cartridge and projectile are manually coupled by an operator of the disrupter for use in the disrupter.