Shaped Charge Liner with Segmented Geometry for Deep Penetration

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Solution Overview

Problem

Conventional shaped charge liners with conical shapes have limited penetration capability into armor, necessitating an improvement in jet formation and penetration depth.

Innovation Solution

A shaped charge assembly featuring a rotational symmetrical liner with specific longitudinal sections, including a truncated cone, ogival, or hemisphere shapes, connected at angles between 80° to 130°, facilitating enhanced jet formation and penetration by optimizing the liner's collapse and velocity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If a conventional conical liner is used, then the shaped charge has sufficient penetration capability, but the penetration depth is limited and cannot achieve deeper penetration

Engineering Contradiction:
Improvejet velocityVSAvoidliner structure complexity
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The liner is divided into multiple longitudinal sections (first, second, and third sections) with different geometries - the first section has a larger cone angle, the second section has a smaller cone angle, and the third section is ogival or hemispherical. This segmentation allows each section to contribute differently to jet formation, with the first section generating higher velocity and the second section extending the jet, thereby increasing penetration depth while maintaining manageable structural complexity through modular design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different sections of the liner are given different local geometries and properties - the first longitudinal section has a larger cone angle optimized for initial jet velocity generation, while the second longitudinal section has a smaller cone angle optimized for jet extension and penetration depth. This local differentiation of properties allows optimization of both velocity and penetration depth simultaneously

Inventive Principle:
Principle #3Local quality

2Length of moving object

If the liner is made with multiple longitudinal sections having different cone angles, then greater penetration depth is achieved, but the manufacturing complexity increases

Engineering Contradiction:
Improvepenetration depthVSAvoidliner manufacturing ease
Core Design Contradiction:
Length of moving objectVSEase of manufacture

Solution Approach 1:

The liner is segmented into multiple longitudinal sections that can be manufactured separately using conventional techniques and then assembled together. This segmentation enables each section to be optimized for its specific function while simplifying the overall manufacturing process, as each segment can be produced independently with standard fabrication methods rather than requiring complex monolithic manufacturing

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple liner sections with different geometries are combined into a single integrated liner structure that functions as a unified component. The sections are connected to form a complete liner that achieves deep penetration capability while maintaining ease of manufacture through the combination of simpler individual sections rather than a single complex piece

Inventive Principle:
Principle #5Merging (Combining)

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

The assembly achieves greater penetration depths and higher jet velocities, significantly improving the penetration capability into armor compared to conventional designs.

Implementation Method 1

When the explosive is detonated, the liner collapses and is squeezed forward, and thereby forms a jet

Methodology Applied
Scientific EffectDetonation: Detonation

Implementation Method 2

the explosive is detonated, the liner collapses and is squeezed forward

Methodology Applied
Scientific EffectShock wave: Shock Wave

Data Source

PatentUS12072170B2Shaped charge assembly
Publication Date: 2024.08.27 SAAB AB
  • US12072170B2 patent drawing
  • US12072170B2 patent drawing
  • US12072170B2 patent drawing

AI summary

A shaped charge assembly, comprising a casing and a liner, is disclosed. The liner includes a first longitudinal section connected to the casing, a second longitudinal section having the shape of a truncated cone wherein the truncated end thereof is directly connected, or connected by means of an intermediate longitudinal section, to the first longitudinal section. The second longitudinal section is at its base end directly connected to a third longitudinal section. The third longitudinal section is in the shape of a cone, an ogival or a hemisphere.