Machine Gun Lateral Feed and Tubular Frame Design
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Solution Overview
Problem
Conventional machine guns face issues with inaccurate aiming due to the placement of aiming systems on top of the barrel, limited compatibility of optical members, heat damage to optics from the barrel, complex belt changing operations, and increased weight due to steel frames, leading to reduced mobility and potential malfunctions.
Innovation Solution
A machine gun design with a lateral feed channel and cover that adjusts the longitudinal position of the ammunition belt during closure, incorporates a non-return ratchet for precise belt positioning, and includes a mechanism for ejecting the last two links, along with retractable holding surfaces and a tubular frame geometry for improved ergonomics and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If aiming systems are mounted on top of the barrel, then aiming functionality is provided, but alignment accuracy between aiming point and point of impact deteriorates due to uncertainty in feed cover repositioning
Solution Approach 1:
The aiming system is extracted from the movable feed cover and mounted on the stationary frame instead. This separates the aiming function from the feed cover assembly, allowing the aiming point to remain fixed relative to the barrel while the feed cover can be opened and closed without affecting alignment accuracy.
2Object-affected harmful factors
If feed cover length is limited to maximum, then heat damage to optics is reduced, but optical member compatibility and alignment are constrained
Solution Approach 1:
The feed channel is repositioned from a top-mounted horizontal configuration to a lateral configuration. This dimensional change allows the feed cover to be shorter (reducing heat exposure to optics) while still providing adequate space for optical members and maintaining their proper alignment through the lateral arrangement of feed components.
3Strength
If steel frame is used, then structural strength is improved, but weapon weight increases reducing mobility
Solution Approach 1:
The frame is constructed from aluminum alloy instead of steel, utilizing composite or alternative materials that provide sufficient structural strength while significantly reducing weight. The aluminum frame maintains the necessary rigidity for weapon operation while improving mobility and reducing fatigue for the operator.
4Ease of operation
If belt feed functions are positioned in upper part, then reloading and malfunction resolution accessibility is improved, but aiming system alignment accuracy deteriorates
Solution Approach 1:
The weapon is segmented into distinct functional zones: the lateral feed channel area for reloading operations and the top-mounted aiming system area for precise aiming. This spatial segmentation allows both functions to operate independently without interfering with each other's performance or accuracy.
5Reliability
If lateral feed channel is implemented, then aiming system reliability is improved, but belt positioning precision may be affected
Solution Approach 1:
A non-return ratchet mechanism is incorporated into the lateral feed channel to preliminarily position the ammunition belt in the correct longitudinal position before feeding. This ensures precise belt positioning is achieved through mechanical advancement and locking, maintaining both aiming reliability and feeding precision.
Data Source
AI summary
The present invention relates to a machine gun (1) comprising a carcass body (22) with an essentially tubular shape.