Longitudinally Sectioned Bullets with Rupturable Binding

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Solution Overview

Problem

Existing bullet designs lack efficient controlled fragmentation and the ability to deliver supplemental payloads effectively, with previous technologies relying on tumbling or weak seams for separation, which can lead to inconsistent performance and limited payload delivery.

Innovation Solution

A longitudinally sectioned bullet with a rupturable binding element that holds two high-density metal matrix composite sections together, allowing for controlled fragmentation upon impact and the delivery of supplemental payloads like electronic circuits or chemical substances, while reducing barrel friction through a minimized contact area with the firearm's rifling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a traditional solid bullet design is used, then the structure is simple and manufacturing is easy, but the fragmentation control and payload delivery capability are insufficient

Engineering Contradiction:

Improvefragmentation control and payload delivery capabilityVSAvoidbullet structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bullet is divided into multiple longitudinal sections (first and second sections) that can separate upon impact. Each section has its own cavity structure, allowing independent payload delivery and controlled fragmentation patterns, thereby enhancing adaptability without requiring a completely new bullet design paradigm

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Payloads are nested within cavities inside the bullet sections. The binding element is nested between the first and second sections, holding them together during firing while allowing separation upon impact. This nesting approach integrates multiple functions (payload delivery, fragmentation control) within the existing bullet structure

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If a binding element is added to hold sections together, then controlled fragmentation is achieved, but the device complexity increases

Engineering Contradiction:

Improvecontrolled fragmentation reliabilityVSAvoidbullet component quantity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The binding element is extracted as a separate, removable component rather than being integral to the bullet sections. This allows the binding element to be independently optimized for reliability while keeping the overall assembly process straightforward, and enables the binding element to be replaced or adjusted without redesigning the entire bullet structure

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The binding element is pre-installed between the bullet sections during manufacturing, ensuring proper positioning and reliable connection before the bullet is fired. This preliminary assembly ensures that the sections remain securely bound during acceleration and flight, while being pre-configured for controlled separation upon impact

Inventive Principle:

Principle #10Preliminary action

3Strength

If high-density metal matrix composite sections are used, then penetration capability is enhanced, but the manufacturing precision requirements increase

Engineering Contradiction:

Improvepenetration capabilityVSAvoidsection alignment and fit tolerance

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The bullet sections are made from high-density metal matrix composite material, providing enhanced penetration capability where needed. The binding element provides a standardized interface region with controlled tolerances, isolating the precision requirements to a localized area rather than the entire bullet structure

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The binding element acts as an intermediary component between the high-density metal matrix composite sections. It provides a standardized connection interface that accommodates manufacturing tolerances of the composite sections while ensuring reliable assembly and disassembly, thereby reducing the overall precision requirements for the composite material fabrication

Inventive Principle:

Principle #24Intermediary (Mediator)

4Loss of energy

If the bullet is designed with minimized contact area with rifling, then barrel friction is reduced, but the stability during flight may be affected

Engineering Contradiction:

Improvebarrel friction lossVSAvoidflight stability

Core Design Contradiction:

Loss of energyVSStability of the object's composition

Solution Approach 1:

The segmented bullet design allows each section to contribute to rifling engagement independently. The binding element provides a centralized contact region with the rifling, concentrating the friction interaction in a controlled area while maintaining overall flight stability through the coordinated rotation of all sections together

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9921040B2Longitudinally sectioned firearms projectiles

Publication Date: 2018.03.20 RUBIN DARREN

AI summary

The present invention relates to longitudinally sectioned bullets and methods that pertain to a projectile structured to be discharged from a firearm and comprising at least two separable longitudinal body sections and at least one binding element that holds the at least two longitudinal body sections together, such as before impact with a target. Said projectile is thus capable of controlled fragmentation against a soft target. Said projectile is adapted to also contain at least one supplemental payload deliverable to a target to further damage said target.