Firearm Suppressor Dual Flow Path Gas Dynamics
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Solution Overview
Problem
Existing firearm suppressors exhibit undesirable noise output variability based on location and pose a risk of secondary ignition due to intermixing of hot expelling gases and fresh air, with suboptimal performance in reducing muzzle flash and acoustic output.
Innovation Solution
The suppressor design features a primary flow path with conical baffles and a secondary helically disposed flow path that diverts propellant gas rearward over the firearm barrel, entering spiral lanes to slow gas movement through multiple exit ports, reducing heat transfer and flash signature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional suppressor design with expansion chambers and baffles is used, then the suppressor structure is simple, but the noise output varies significantly based on location and secondary ignition risk increases due to intermixing of hot gases and fresh air
Solution Approach 1:
The suppressor divides the gas flow into two separate paths: a primary flow path for the majority of gases and a secondary flow-through path for a portion of the gases. This segmentation allows independent control of each flow path, reducing noise variability and preventing harmful intermixing by directing gases through distinct routes with different cooling and expansion characteristics.
Solution Approach 2:
The patent introduces a diverter as an intermediary component that redirects a portion of the propellant gases into the secondary flow-through path. This intermediary element mediates between the high-pressure gas source and the exit ports, controlling the distribution of gases to optimize acoustic performance and reduce secondary ignition risks.
2Ease of manufacture
If propellant gases are allowed to escape directly through exit ports, then the suppressor structure is simple, but the muzzle flash and acoustic output are not sufficiently reduced
Solution Approach 1:
The patent adds a helical dimension to the secondary flow path, creating spiral lanes that wrap around the primary flow path. This dimensional addition increases the path length and complexity of gas flow without significantly increasing the suppressor's external dimensions, thereby reducing muzzle flash and acoustic output while maintaining a compact structure.
Solution Approach 2:
The patent employs curved and helical flow paths instead of straight linear paths. The spiral lanes and curved chamber walls extend the gas flow path length within a compact volume, increasing residence time for cooling and expansion, which reduces muzzle flash and acoustic output without requiring a longer suppressor body.
3Object-generated harmful factors
If the suppressor retains expanding gases for a longer time to reduce heat transfer, then the muzzle flash is reduced, but the suppressor temperature rise increases
Solution Approach 1:
The patent extracts a portion of the hot propellant gases into the secondary flow-through path, which has direct access to exit ports. This extracted portion bypasses the longer retention path of the primary chamber, reducing the overall heat accumulation in the suppressor body while still achieving muzzle flash reduction through the combined effect of both flow paths.
Solution Approach 2:
The patent applies different flow retention characteristics to different regions: the primary flow path provides longer retention for maximum cooling and flash reduction, while the secondary flow-through path provides shorter retention for heat management. This local differentiation of flow characteristics allows simultaneous optimization of muzzle flash reduction and temperature control.
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
This design significantly reduces muzzle flash and acoustic output, demonstrating improved performance compared to existing suppressors in both detachable and integral configurations, with reduced temperature rise and enhanced acoustic safety.
Implementation Method 1
expansion chambers within a tubular body that surround the projectile path to decelerate and cool the escaping gases
Implementation Method 2
slowing escaping gases when a firearm is discharged
Implementation Method 3
retaining the expanding gases in the suppressor for a reduced time frame, thus lessening the transfer of heat to the suppressor
Implementation Method 4
The secondary flow path is helically disposed within the firearm suppressor
Implementation Method 5
A diverter directs a portion of the propellant gas rearward, over the firearm barrel, before entering spiral lanes in the forward direction
Data Source
AI summary
An improved firearm suppressor is provided. The firearm suppressor generally includes a primary flow path and a secondary flow path. The primary flow path is centrally disposed within the suppressor and includes multiple internal chambers that are separated by conical baffles. The secondary flow path is helically disposed within the firearm suppressor. A diverter directs a portion of the propellant gas rearward, over a firearm barrel, before entering spiral lanes in the forward direction. The primary flow path slows the movement of propellant gas escaping through a projectile exit port, while the secondary flow path slows the movement of propellant gas escaping through a plurality of propellant gas exit ports.