Adjustable Pressure Firing Barrel for Variable Projectile Power
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Solution Overview
Problem
Rifle cartridges are inadequate for hunting wild boar due to insufficient power, while being too powerful for hare hunting, and rocket weapons lack the ability to simulate ballistic flight with rifle ammunition effectively.
Innovation Solution
A shooting device with a high-pressure chamber and low-pressure chamber surrounding the launch tube, featuring adjustable high-pressure and low-pressure tapping holes, and an exhaust duct with a valve to control pressure difference, allowing for variable projectile velocity and lethality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If rifle cartridges are used for hunting wild boar, then insufficient power is achieved, but if wild boar ammunition is used for hare hunting, then the hare is killed instantly and rendered unfit for consumption
Solution Approach 1:
The patent implements dynamic pressure control by introducing a movable piston that can be positioned at different locations within the firing barrel, and a controllable valve that regulates gas pressure in real-time. This allows the same rifle cartridge to deliver different projectile powers - low power for hare hunting and high power for wild boar hunting - thereby resolving the contradiction between fixed projectile power and adaptability to different game requirements
Solution Approach 2:
The patent changes the physical parameters of the firing system by introducing a variable volume chamber and controllable pressure regulation mechanism. By adjusting the chamber volume and gas pressure, the projectile acceleration and final velocity can be varied, enabling the same ammunition to achieve different lethality levels suitable for different game sizes
2Speed
If rocket weapons are used to fire rifle ammunition, then ballistic flight simulation is achieved, but variable projectile velocity and selective lethality cannot be obtained
Solution Approach 1:
The patent transforms the static rocket firing system into a dynamic one by incorporating a movable piston and controllable valve mechanism. This allows real-time adjustment of gas pressure and chamber volume during the firing process, enabling variable projectile velocity and selective lethality while maintaining ballistic flight simulation capabilities
3Stability of the object's composition
If standard rifle ammunition is used, then consistent ballistics are achieved, but inability to simulate large-caliber weapon ballistics or adjust energy settings exists
Solution Approach 1:
The patent introduces an intermediary pressure regulation system between the rifle cartridge and the projectile. The controllable valve and variable volume chamber act as mediators that can modify the gas pressure profile, allowing standard rifle ammunition to simulate large-caliber weapon ballistics by adjusting the pressure-time curve, while maintaining consistent ballistics through controlled parameters
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
Enables the adjustment of projectile speed and lethality to match the requirements for different game, simulates ballistic flight, and reduces recoil by controlling gas pressure, enhancing hit probability and allowing for training simulations with standard ammunition.
Implementation Method 1
the pressure difference in the launch tube is easily adapted to the requirements both in the high-pressure area, i.e. in front of the ammunition store, and in the low-pressure area, i.e. in the firing direction in front of the high-pressure area
Implementation Method 2
an exhaust duct connecting the high-pressure chamber with the atmosphere and an adjustable one in the exhaust duct valve is arranged
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a firing apparatus for firing cartridges (1), in particular rifle cartridges, comprising an ammunition magazine (2) for receiving the cartridges (1) and a firing barrel (5) in front of the ammunition magazine (2) in the firing direction. In order to allow the pressure difference in the firing barrel (5) to be easily adapted to the requirements both in the high-pressure region, i.e. in front of the ammunition magazine (2), as well as in the low-pressure region, i.e. in front of the high-pressure region in the firing direction, the invention is characterized by a high-pressure chamber (3), which surrounds the rear end of the firing barrel (5) when seen in the firing direction; a low-pressure chamber (4) which is arranged in front of the high-pressure chamber (3) when seen in the firing direction and which surrounds the firing barrel (5); high-pressure bores (5a) in the firing barrel (5) in the region of the high-pressure chamber (3), said bores connecting the interior of the firing barrel (5) to the high-pressure chamber (3); and rear and front low-pressure bores (5b), when seen in the firing direction, in the firing barrel (5) in the region of the low-pressure chamber (4), said bores connecting the interior of the firing barrel (5) to the low-pressure chamber (4). The firing apparatus also comprises a blow-out channel (6) which connects the high-pressure chamber (3) to the atmosphere and is equipped with an adjustable valve (7).