Armor-Piercing Bullet with Segmented Penetrator and Metallic Paste Bonding
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Solution Overview
Problem
Existing armor-piercing (AP) bullets suffer from directional instability and fragmentation after penetrating armor, leading to inaccurate targeting.
Innovation Solution
An AP bullet design featuring a penetrator with an exposed tip and a full-length shaft within a jacket, bonded using a temperature-resistant metallic repair paste, which maintains structural integrity and directional stability upon impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the penetrator tip is designed only for piercing armor, then armor penetration capability is improved, but directional stability is worsened causing the tip and core to disperse after impact
Solution Approach 1:
The penetrator is segmented into two functional parts: a hardened steel tip for piercing armor and a longer shaft for maintaining directional stability. This segmentation allows each part to perform its specific function optimally without compromising the other.
Solution Approach 2:
Different parts of the penetrator have different properties: the tip is hardened for penetration while the shaft maintains a structure that provides stability. The local quality of each section is optimized for its specific role in the overall penetration process.
2Ease of manufacture
If the penetrator is shorter than the jacket, then manufacturing is simplified, but directional stability after piercing is worsened
Solution Approach 1:
The penetrator extends beyond the jacket length, creating a segmented structure where the penetrator shaft protrudes to provide stability. This design allows the penetrator to maintain directional control after the jacket separates from the target.
3Manufacturing precision
If precision machining with low tolerances is used to press fit the penetrator into the jacket, then manufacturing precision is improved, but manufacturing time is worsened
Solution Approach 1:
The bonding method changes the physical-chemical parameters of the interface between penetrator and jacket. By using temperature-resistant metallic paste that bonds at elevated temperatures, the need for precision machining is reduced while maintaining strong attachment.
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 design enhances accuracy and armor penetration by maintaining directional stability and preventing fragmentation, while also reducing manufacturing time and costs through the use of a metallic paste bonding method.
Implementation Method 1
bonded using a temperature-resistant metallic repair paste
Implementation Method 2
temperature-resistant metallic paste
Data Source
AI summary
The alternate armor-piercing bullet is a firearm projectile that is designed to provide high accuracy and improved armor penetration. To accomplish this, the firearm projectile comprises a penetrator, a jacket, and a temperature-resistant metallic paste. The penetrator has an exterior tip with a full-length shaft positioned inside of the jacket. The outer surfaces of the shaft and the inner surfaces of the jacket are coated with the metallic paste. When the projectile is fired from a gun, the metallic paste holds the jacket and the penetrator together until impacting the armor. Once the armor is pierced, the penetrator's full-length shaft assists in directional stability, allowing the penetrator to maintain its trajectory and reach the intended target.