Breechblock Recoil Extraction Mechanism
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Solution Overview
Problem
Existing automatic weapon systems, particularly externally powered ones, face issues with reliably extracting empty cartridge cases due to high extraction forces, which can lead to mission aborts and require manual intervention, especially in combat scenarios.
Innovation Solution
The breechblock and barrel take over the unlocking and extraction of cartridge cases using the recoil impulse, reducing the forces on the breechblock drive and allowing the recoil energy to facilitate the removal of empty cases independently of the external drive, thereby minimizing the power requirements for the weapon drive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive is strengthened to extract highly deformed cartridge cases, then the reliability of cartridge case extraction is improved, but the construction volume, weight, and costs increase
Solution Approach 1:
The weapon system uses its own recoil energy to perform the extraction function, rather than relying on an externally powered drive. The returning masses (barrel and breechblock) automatically extract the cartridge case during their rearward movement, making the system self-sufficient for this function and eliminating the need for additional motor power.
Solution Approach 2:
The recoil impulse, which was previously an unused harmful effect in externally powered systems, is converted into a useful extraction mechanism. The rearward movement of the returning masses during recoil is harnessed to pull the cartridge case from the chamber, transforming what was wasted energy into a functional benefit.
2Reliability
If the drive is strengthened to extract highly deformed cartridge cases, then the reliability of cartridge case extraction is improved, but the construction volume increases
Solution Approach 1:
The weapon system uses its own recoil energy to perform the extraction function, rather than relying on an externally powered drive. The returning masses (barrel and breechblock) automatically extract the cartridge case during their rearward movement, making the system self-sufficient for this function and eliminating the need for additional motor power.
Solution Approach 2:
The recoil impulse, which was previously an unused harmful effect in externally powered systems, is converted into a useful extraction mechanism. The rearward movement of the returning masses during recoil is harnessed to pull the cartridge case from the chamber, transforming what was wasted energy into a functional benefit.
3Adaptability or versatility
If externally powered systems are used, then loading management and ammunition type provision are improved, but the recoil energy remains unused
Solution Approach 1:
The recoil impulse, which was previously an unused harmful effect in externally powered systems, is converted into a useful extraction mechanism. The rearward movement of the returning masses during recoil is harnessed to pull the cartridge case from the chamber, transforming what was wasted energy into a functional benefit.
Solution Approach 2:
The external drive serves multiple functions: it provides the power for loading management and ammunition type provision, and simultaneously enables the utilization of recoil energy for cartridge case extraction. This multi-functionality resolves the contradiction by making the external drive contribute to both loading versatility and energy utilization.
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 approach ensures reliable extraction of empty cartridge cases, reduces the risk of weapon malfunctions, and minimizes the construction volume and weight of the weapon system, while maintaining safety by utilizing the recoil energy for unlocking and extraction.
Implementation Method 1
The control cam is divided into a number of, preferably at least four, cam sections. Part of the second cam section and two subsequent cam sections serve the purpose of weapon recoil, in particular the return of the returning (moving) masses as well as the advance of the moving masses without breechblock head 2.
Implementation Method 2
The actual weapon function and the unlocking of the breechblock or breechblock head as well as the partial and subsequent complete extraction of the cartridge case are combined in this integrated control cam. When the cartridge case has been extracted from the cartridge chamber, the breechblock head 2 is held in this rear position by means of blocking slide 9.
Data Source
AI summary
A breechblock for a weapon system having a recoilable barrel and having a breechblock carrier and a rotatable breechblock head. The breechblock head is carried by the breechblock carrier. The breechblock carrier has a control cam that is divided into a number of, preferably at least four, cam sections. The actual weapon function and the unlocking of the breechblock or of the breechblock head are combined in this control cam. The breechblock head comprises a control pin, which engages in the control cam and can be guided therein. Attached to the breechblock carrier are two blocking slides, which keep the breechblock head in one of two different positions, in which positions the breechblock head can enter or leave the locking portion of the barrel, namely, a forward position in the course of the actual functioning of the weapon and a rear position during the advancement of the returning masses.