Peripheral-Vented Firearm Suppressor for Low Back Pressure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing firearm suppressors face issues such as high back pressure leading to toxic fume exposure, premature failure due to pressure and temperature differentials during high rates of fire, and inconsistent muzzle flash suppression, particularly with multi-stage designs.
Innovation Solution
A suppressor design featuring a series of cylindrical gas expansion chambers, an annular gas expansion chamber, and peripheral vents, along with a rear portion for deflecting and rebounding propellant gases, to reduce back pressure and minimize muzzle flash and blast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If multi-stage suppressor design is used to reduce muzzle blast, then sound suppression is improved, but back pressure increases causing toxic fume exposure
Solution Approach 1:
The suppressor is divided into multiple stages with distinct functions: a first stage with baffles for initial gas diversion and cooling, and a second stage with a tapered bore for final sound suppression. This segmentation allows each stage to be optimized for its specific function while managing back pressure through the tapered bore design that facilitates gas flow.
Solution Approach 2:
The tapered bore in the second stage gradually changes the cross-sectional area of the gas flow path, transitioning from a smaller to larger area. This parameter change allows for controlled pressure reduction and gas expansion, maintaining lower back pressure while achieving effective sound suppression.
2Object-generated harmful factors
If multi-stage suppressor design is used to reduce muzzle blast, then sound suppression is improved, but premature failure occurs due to pressure and temperature differentials
Solution Approach 1:
The tapered bore gradually transitions pressure and temperature conditions along the gas flow path, avoiding sudden differential changes that cause thermal stress and material failure. This gradual parameter change enhances reliability by preventing premature failure from thermal and pressure shocks.
3Device complexity
If conventional suppressor design is used, then structure is simple, but muzzle flash suppression is inconsistent
Solution Approach 1:
The suppressor is divided into multiple stages with distinct functions: a first stage with baffles for initial gas diversion and cooling, and a second stage with a tapered bore for final sound suppression. This segmentation allows each stage to be optimized for its specific function while managing back pressure through the tapered bore design that facilitates gas flow.
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 design effectively reduces toxic fume inhalation and suppresses muzzle flash and blast while preventing premature failure by managing pressure and temperature differentials.
Implementation Method 1
suppressors are configured to reduce the temperature and pressure of propellant gases by introducing the gases into a succession of expansion chambers so as to give rise to a controlled expansion of the gases
Implementation Method 2
a suppressor that exhibits a relatively low back pressure, thereby reducing toxic fumes inhaled by a practitioner during firing a weapon
Data Source
AI summary
An apparatus and methods are provided for a suppressor to be coupled with a muzzle end of a barrel of a firearm to reduce muzzle blast and muzzle flash. The suppressor comprises a housing having a proximal end and a distal end. A front portion within the housing comprises a series of cylindrical gas expansion chambers for attenuating the temperature and energy of propellant gases accompanying a projectile fired from the firearm. An annular gas expansion chamber surrounds the cylindrical gas expansion chambers and directs a portion of the propellant gases from a rear portion of the suppressor to peripheral vents disposed at the distal end. Lateral chambers within the rear portion deflect and rebound a portion of the propellant gases before passing them into the annular gas expansion chamber. Ledges within the annular gas expansion chamber direct the propellant gases distally through suppressor toward the peripheral vents.