Recoil Brake Piston Timing to Reduce Barrel Vibration
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Solution Overview
Problem
Existing barrel brakes for large-caliber weapons generate vibrations in the barrel during projectile firing, affecting accuracy due to the braking force being dependent on recoil distance and causing unwanted barrel movements.
Innovation Solution
A barrel brake design that allows the barrel to freely return while the projectile is inside, with a piston separating high and low-pressure fluid sides, ensuring no braking effect until the projectile exits, and a controlled fluid flow through a control gap to minimize residual braking forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a fluid brake is used to slow down the recoil of the barrel, then the braking force is generated dependent on the distance traveled by the recoil, but this causes vibrations in the barrel during the bullet's passage, negatively impacting accuracy
Solution Approach 1:
The piston rod is designed with a sufficient axially displaceable path length that allows the piston to remain in its initial position during the bullet's passage through the barrel. This preliminary positioning ensures no braking force is generated during firing, eliminating vibrations. The braking action is delayed until after the bullet exits, when the piston rod has traveled the predetermined path length
Solution Approach 2:
The system transitions from a static braking configuration to a dynamic one where the piston rod's displaceable path length is optimized to match the bullet transit time. This dynamic design allows the brake to be inactive during firing (when accuracy is critical) and active during recoil deceleration (when braking is needed), resolving the contradiction between braking effectiveness and accuracy
2Manufacturing precision
If a piston rod with sufficient axially displaceable path length is used to allow free return of the barrel, then the projectile can exit before braking begins, but the device complexity increases
Solution Approach 1:
The key parameter being optimized is the axially displaceable path length of the piston rod. By carefully selecting this parameter to match the distance the barrel travels during bullet passage, the system achieves the dual goal of allowing free return during firing (improving accuracy) while providing effective braking afterward. This parameter optimization avoids the need for additional complex components
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
Minimizes barrel vibrations by delaying the braking effect until after the projectile leaves, enhancing the weapon's accuracy by stabilizing the barrel during firing.
Implementation Method 1
a braking force is generated as the bullet passes through the weapon barrel, which causes vibrations in the barrel
Implementation Method 2
an elastic means (16), in particular a spring, which is arranged on the piston rod (30) and can be compressed during a displacement of the piston rod (30) in the axial direction (A)
Data Source
Figure 1
AI summary
The invention relates to a recoil brake (1) for braking recoiling masses of a barreled firearm, comprising: a hollow cylinder (10), which has an interior (11), the interior being filled with a fluid and having a high-pressure side (14) and a low-pressure side (12); a control rod (40), which is arranged in the hollow cylinder (10) and has an end (42), which is connected to the hollow cylinder (10); a piston rod (30), which surrounds the control rod (40) and is arranged within the hollow cylinder (10) for movement in an axial direction (A) of the hollow cylinder (10), wherein a piston (20), which is arranged for sliding in the axial direction (A), is formed on the piston rod (30), which piston fluidically separates the high-pressure side (14) from the low-pressure side (12). A distance (L) by which the piston (20) can slide in the axial direction (A) is at least as large as the recoil distance of the recoiling masses during the passage of a bullet through the barreled firearm.