Muzzle Brake Dual Compression Cone Blast Overpressure Reduction
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Solution Overview
Problem
Conventional muzzle brakes reduce recoil energy but increase blast overpressure, causing hearing damage and other injurious effects on gun crews, necessitating a design that balances recoil efficiency with reduced blast overpressure.
Innovation Solution
A muzzle brake design featuring a body with a longitudinal bore and two compression cones, along with divergent outlet nozzles and baffles, which vents more gas forward to reduce recoil forces while minimizing blast overpressure, incorporating a unique geometry that directs gas flow to enhance efficiency and reduce shockwave reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If more gas is diverted by the muzzle brake, then recoil efficiency is improved, but blast overpressure increases causing hearing damage and injurious effects on gun crew
Solution Approach 1:
The muzzle brake is divided into multiple chambers (first chamber and second chamber) separated by baffles, with each chamber having its own outlet ports. This segmentation allows the gas flow to be divided and directed through different paths, reducing the concentration of blast overpressure while maintaining recoil reduction effectiveness.
Solution Approach 2:
The outlet ports are arranged at different angular positions around the longitudinal axis, and the baffles create three-dimensional flow paths. This spatial distribution disperses the gas exhaust in multiple directions rather than a single direction, reducing the intensity of blast overpressure in any one direction while maintaining overall recoil reduction.
2Force
If conventional muzzle brake design is used, then recoil force is reduced, but structural shock loading increases
Solution Approach 1:
The brake body is segmented into multiple chambers with intermediate baffles, which distribute the shock loading across multiple structural elements rather than concentrating it in a single location. This reduces the peak stress on any one part of the structure.
Solution Approach 2:
The baffles act as intermediary structures between the high-pressure gas sources and the external environment. They gradually dissipate the pressure waves and distribute the shock loading across their surface area, reducing the peak structural stress transmitted to the mounting structure.
Data Source
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AI summary
A muzzle brake (20) for a gun tube (12) defining a bore (40) centred on a longitudinal axis (32). The muzzle brake (20) comprises a top plate (24) and a bottom plate (26). A first wall section (100), a second wall section (200) and a third wall section (300) extend from the top plate (24) to the bottom plate (26). The second wall section (200) extends from the first wall section (100) to a first baffle (220). The third wall section (300) extends from the second wall section (200) to a second baffle (320). The second wall section (200), top plate (24) and bottom plate (26) converge towards the longitudinal axis (32) and the first baffle (220), such that the second wall section (200), top plate (24), bottom plate (26) and first baffle (220) define a first compression cone (224). The third wall section (300), top plate (24) and bottom plate (26) converge towards the longitudinal axis (32) and the second baffle (320) such that the third wall section (300), top plate (24), bottom plate (26) and second baffle (320) defines a second compression cone (324).