Muzzle Device Venturi Blast Shield Gas Cooling
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Solution Overview
Problem
Existing flash suppressors for firearms do not effectively cool or disperse propellant gases, resulting in inadequate muzzle flash reduction.
Innovation Solution
The design incorporates a muzzle device with a central borehole and porting apertures that create a Venturi effect, allowing ambient air to mix with propellant gases and enhance cooling and dispersion, along with a blast shield featuring a tapered tube portion to further reduce muzzle flash.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional flash suppressor geometry is used, then the device structure is simple, but propellant gases are not sufficiently cooled or dispersed resulting in inadequate muzzle flash reduction
Solution Approach 1:
The flash suppressor is divided into multiple functional segments: a body portion with a central borehole, multiple prongs extending from the body, and porting apertures positioned between the prongs. Each segment performs a specific function in cooling and dispersing propellant gases, allowing the complex flash reduction task to be accomplished through coordinated simple components
Solution Approach 2:
Cool air is introduced as an intermediary substance between the hot propellant gases and the external environment. The porting apertures allow cool ambient air to mix with the hot propellant gases in the spaces between the prongs, effectively cooling the gases before they exit the suppressor, thereby reducing muzzle flash intensity
2Temperature
If propellant gases are to be effectively cooled and dispersed, then complex geometry with multiple prongs and porting apertures is needed, but this increases device complexity
Solution Approach 1:
Different regions of the suppressor are designed with different geometries to perform different functions: the central borehole maintains a simple cylindrical shape for bullet passage, while the spaces between the prongs provide turbulent flow paths for gas cooling. The porting apertures are strategically positioned to introduce cool air precisely where hot gases flow, creating localized cooling zones without complicating the overall structure
Solution Approach 2:
The prongs are designed with curved surfaces and rounded edges rather than sharp angular shapes. This curvature promotes turbulent flow of propellant gases through the spaces between prongs, enhancing mixing with cool air and improving heat transfer efficiency. The rounded geometry also reduces stress concentration points
3Object-affected harmful factors
If propellant gases are to be effectively dispersed, then multiple prongs and porting apertures are required, but this increases manufacturing complexity
Solution Approach 1:
The suppressor is manufactured as an integrated piece with the central borehole, prongs, and porting apertures formed as a single unit. This segmentation into functional zones allows complex gas dispersion patterns to be achieved through precision machining or forming of the single component, rather than assembling multiple separate parts, thereby maintaining manufacturing simplicity
Solution Approach 2:
The porting apertures are positioned to allow cool air to enter not only at the front but also along the sides of the suppressor body. This partial introduction of cool air at multiple locations enhances gas dispersion effectiveness without requiring excessive cooling mechanisms or overly complex aperture arrangements
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 provides improved muzzle flash suppression by effectively cooling and dispersing propellant gases, reducing the visible flash signature and improving user safety in low-light conditions.
Implementation Method 1
a venture shaped tube portion formed within the central borehole to create a pinch point that allows air to be sucked into the stream of blast or propellant gas as the gases pass through the restricted portion of the central borehole
Implementation Method 2
The porting apertures, if included, allow air to be drawn into the internal cavity of the blast shield cup as propellant gases exit the muzzle device and are directed forwards
Data Source
AI summary
A muzzle device and blast shield. The muzzle device includes a body portion having a central borehole, and wherein the body portion comprises a plurality of prongs defined between longitudinally extending slots formed in the body portion and porting apertures, wherein the porting apertures provide fluid communication between an exterior of the muzzle device and at least one longitudinally extending slot. The blast shield includes a body portion having a central borehole, wherein the body portion comprises a couple portion having an internal cavity, a barrel extension portion extending into at least a portion of the internal cavity, and a plurality of porting apertures, wherein the porting apertures provide fluid communication between an exterior of the blast shield and the internal cavity.