Fluted Barrel Rail for Accessory Mounting and Cooling
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Solution Overview
Problem
Rifles, particularly assault rifles, face limitations in accessory attachments due to rail space constraints, requiring easy mounting and detachment while maintaining firing accuracy, and there is a need for weight reduction to alleviate fatigue in military personnel.
Innovation Solution
The design incorporates fluted barrels with upper and lower rails that provide direct contact and alignment for accessory attachment, using materials like aluminium for heat dissipation and weight reduction, along with sliding mounts for thermal expansion compensation, and non-conductive materials for additional components like hand guards and gas blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple accessories are mounted on the rifle through the attachment rail, then the rifle's versatility is improved, but the rifle's weight increases
Solution Approach 1:
The attachment rail is designed as a universal mounting system that can accommodate multiple different types of accessories (optics, lasers, grenades, etc.) through standardized interfaces. This allows a single rail structure to serve multiple functions and support various accessories without requiring separate mounting systems for each accessory type, thereby improving versatility while controlling weight.
2Adaptability or versatility
If accessories are mounted on the attachment rail, then the rifle's functionality is enhanced, but the firing accuracy may deteriorate due to alignment interference
Solution Approach 1:
The attachment rail acts as an intermediary structure between the rifle barrel and the accessories. It provides a stable, precisely engineered mounting platform that ensures accessories are positioned correctly relative to the barrel's line of sight. The rail's rigid construction and precise alignment features mediate between the need for accessory functionality and the requirement for maintained firing accuracy.
3Weight of moving object
If the rifle is made lighter to reduce fatigue, then the comfort is improved, but the structural strength may deteriorate
Solution Approach 1:
The rifle incorporates composite materials and optimized material distributions to achieve weight reduction while maintaining structural strength. The attachment rail and other components use materials and designs that provide high strength-to-weight ratios, allowing the rifle to be lighter without compromising the structural integrity needed to support accessories and withstand firing stresses.
4Length of moving object
If the magazine is positioned behind the trigger group in a bullpup configuration, then the rifle length is reduced, but the ease of operation may deteriorate
Solution Approach 1:
The bullpup configuration relocates the magazine from its traditional position in front of the trigger group to behind the trigger group, effectively utilizing the space along the rifle's longitudinal axis in a different dimension. This dimensional reorganization allows the rifle to maintain a shorter overall length while preserving adequate spacing and accessibility for the trigger and other control mechanisms, thus balancing compactness with operational ease.
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 configuration enhances versatility with multiple accessory attachments, maintains precise firing accuracy, and reduces the rifle's weight, improving operational efficiency and comfort during combat.
Implementation Method 1
the barrel with attachment components mounted thereon can still have a significant portion of the barrel exposed to airflow to promote cooling of the barrel
Implementation Method 2
The rail may also include air holes to promote cooling of the upper rail, which acts as a heat sink for the heat generated by the combustion from a shot firing in the barrel
Implementation Method 3
the rail to shift alignment with respect to the barrel in response to, for example, a differential in thermal expansion between the rail and barrel
Data Source
AI summary
A firearm comprising a barrel assembly mounted at one end to a butt group, the butt group including a firing mechanism and an ammunition entry point; a gun lock group slidably mounted between the barrel assembly and butt group that slides to load ammunition from the ammunition entry port into a barrel of the barrel assembly upon cocking of the firearm; and a rail for accessory attachment that is mounted on the barrel and in direct contact with a portion of the barrel. The second invention relates to a hammer pack in the butt group that automatically resets the firing mechanism upon recoiling of the gun lock group during firing, wherein the hammer pack includes a hammer biased to pivot under the force of a hammer spring, and an autofire lever biased through an autofire lever spring to engage the hammer.