Carbon Ceramic Barrel and Receiver for Gas Operated Machine Gun
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automatic weapon systems face challenges in continuous firing due to rigors and heat generated, leading to limitations in barrel and receiver materials, such as excess weight, high heat retention, and potential warping at high temperatures.
Innovation Solution
The use of carbon ceramic materials, specifically ceramic matrix composites like carbon/silicon carbide, silicon nitride, and aluminum oxide infused with graphene, for constructing the barrel and upper receiver to enhance strength, heat dissipation, and thermal shock resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional metal materials (steel, iron) are used for barrel and receiver construction, then structural strength is adequate, but weight increases and heat dissipation performance deteriorates
Solution Approach 1:
The patent applies composite materials by combining carbon fiber reinforcement with ceramic matrix (specifically silicon carbide, silicon nitride, or aluminum oxide). This creates a hybrid material structure that leverages the high strength-to-weight ratio of carbon fiber and the superior heat resistance and thermal stability of ceramics, thereby reducing weight while improving heat dissipation performance compared to traditional metal constructions.
Solution Approach 2:
The patent changes the material parameters by transitioning from metallic materials to ceramic matrix composites with specific thermal and mechanical properties. The ceramic matrix provides high melting point, low thermal conductivity, and excellent thermal shock resistance, fundamentally altering the thermal behavior of the barrel and receiver components to better withstand sustained firing conditions.
2Reliability
If traditional metal materials are used for barrel and receiver, then ease of manufacture is maintained, but reliability under high temperature and continuous firing deteriorates
Solution Approach 1:
The patent employs ceramic matrix composites (CMC) that combine the high-temperature stability of ceramics with the toughness and crack resistance of carbon fiber reinforcement. This composite structure maintains structural integrity under extreme thermal conditions and continuous firing, significantly improving reliability over traditional metals that are prone to thermal fatigue and warping.
Solution Approach 2:
The patent applies different ceramic matrix materials to different components or regions based on specific thermal and mechanical requirements. For example, silicon carbide may be used in areas requiring highest heat resistance, while other regions may use aluminum oxide for adequate performance with easier processing, allowing optimization of both reliability and manufacturability in different locations.
3Strength
If carbon ceramic composite materials are used, then strength increases four times and heat dissipation improves, but manufacturing complexity and difficulty increase
Solution Approach 1:
The patent utilizes carbon fiber-reinforced ceramic matrix composites that achieve four times the strength of traditional metals while providing superior heat dissipation. The carbon fiber network provides structural strength and crack bridging, while the ceramic matrix (silicon carbide, silicon nitride, or aluminum oxide) provides thermal stability and resistance to thermal shock, creating a material system that outperforms metals in both strength and thermal management.
Solution Approach 2:
The patent employs intermediate bonding phases or coating layers between the carbon fiber reinforcement and ceramic matrix to facilitate manufacturing. These intermediary elements help with stress transfer, prevent direct carbon-oxidation reactions during processing, and enable the composite to be manufactured using established ceramic processing techniques, thereby reducing overall manufacturing complexity.
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 solution provides a lightweight, four times stronger material that maintains structural integrity and effectively dissipates heat, preventing warping even at high temperatures, thus enabling reliable continuous firing.
Implementation Method 1
carbon ceramic materials, specifically ceramic matrix composites like carbon/silicon carbide, silicon nitride, and aluminum oxide infused with graphene, for constructing the barrel and upper receiver to enhance strength, heat dissipation, and thermal shock resistance
Data Source
AI summary
An automatic weapon system comprising a bolt driven gas operated machine gun operable in either an open bolt configuration or a closed bolt configuration including a reciprocating bolt assembly operable in either a semi-automatic mode or an automatic mode movable between a rear or open position and a forward or closed position and a firing chamber in combination with an ammunition magazine to automatically feed cartridges from the ammunition magazine to the gas operated machine gun for continuous fire of cartridges from the automatic weapon system including a cartridge feed mechanism to convert the linear motion of the reciprocating bolt assembly into rotary motion to incrementally position a cartridge from the ammunition magazine through a cartridge feed opening formed in the ammunition magazine into the firing chamber as the reciprocating bolt assembly moves between the rear or open position to the forward or closed position.