Projectile Notched Sacrificial Section for Penetration
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Solution Overview
Problem
Existing small-caliber projectiles face reduced penetration power due to uncontrolled deformation and fragmentation at the radially projecting shoulder, which compromises their ability to penetrate strong targets effectively.
Innovation Solution
The design incorporates a sacrificial section with a circumferential notch that separates from the projectile base upon impact, absorbing shock waves and preventing deformation from spreading to the base, thereby maintaining the integrity of the projectile for enhanced penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radially projecting shoulder is used to provide an axial stop for the projectile shoe, then the projectile shoe can be securely positioned, but the shoulder acts as a fracture point causing uncontrolled deformation and fragmentation during penetration
Solution Approach 1:
The projectile is divided into two functional segments: a sacrificial section (nose) that is intentionally weakened to separate first upon impact, and a resilient section (base) that maintains structural integrity for penetration. The circumferential recess creates a predetermined separation plane, allowing the nose to detach while the base continues penetrating the target without deformation.
Solution Approach 2:
The problematic radially projecting shoulder is removed from the projectile structure. Instead, a circumferential recess is provided at the transition between sections, which serves the positioning function without creating a fracture point. This extraction eliminates the source of uncontrolled deformation while maintaining the necessary axial stop for the projectile shoe.
2Stability of the object's composition
If the projectile base merges into the ogive forming a radially projecting shoulder, then structural continuity is maintained, but this creates a fracture point that reduces penetration power
Solution Approach 1:
Different parts of the projectile are given different local qualities: the sacrificial section (nose) is designed with lower strength and a circumferential recess to facilitate controlled separation, while the resilient section (base) maintains high strength and structural continuity for effective penetration. This local differentiation allows each section to perform its specific function optimally.
3Strength
If high-density and hardness materials are used to increase penetration efficiency, then penetration power is improved, but material costs increase
Solution Approach 1:
The projectile is segmented into a sacrificial nose section and a resilient base section. The nose, made from less expensive material, is designed to separate first upon impact, absorbing the initial shock. The base, made from more expensive high-density material, maintains structural integrity and provides the actual penetration function. This segmentation allows cost-effective material usage while maintaining penetration efficiency.
Solution Approach 2:
The sacrificial section acts as a disposable component that is intentionally designed to fail first upon impact. Made from less expensive material, it sacrifices itself to protect the more expensive resilient base section, absorbing the initial shock and preventing deformation of the valuable penetration section.
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 design significantly increases penetration power without increasing costs or compromising aerodynamics, allowing the projectile to maintain structural integrity and achieve higher penetration performance.
Implementation Method 1
the shock and impulse waves introduced into the sacrificial section as a result of the impact, which can lead to failure and/or uncontrolled deformation
Implementation Method 2
the shock and impulse waves introduced into the sacrificial section as a result of the impact
Implementation Method 3
a circumferential recess is formed, which causes, upon impact with a target, at least partial separation of the sacrificial section from the projectile base
Implementation Method 4
impact with a standard target results in at least partial separation of the sacrificial section from the projectile base
Data Source
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AI summary
The present invention relates to a projectile, in particular a penetrator, preferably with a caliber of less than 40 mm, for ammunition, comprising a bow-side, in particular ogive-shaped, sacrificial section and a projectile base adjoining it, wherein a transition between the projectile base and the bow-side sacrificial section and/or the projectile base is notched on the outside such that, upon impact with a standard target, at least a partial separation of the sacrificial section from the projectile base occurs.