Oleoresin Capsicum Pyrotechnic Composition Combustion Control

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Solution Overview

Problem

Existing pyrotechnic munitions containing oleoresin capsicum (OC) face challenges in incorporating OC as a liquid phase into a dry fuel and oxidizer mixture due to degradation at high temperatures and difficulty in achieving consistent ignition, leading to incomplete burning and reduced effectiveness.

Innovation Solution

A smoke composition is developed by mixing OC with oxidizers and reducers, incorporating flow agents and a booster material to control combustion temperature and ensure complete burning, allowing for the creation of a stable pyrotechnic material that can be easily manufactured and ignited, while maintaining OC's irritant properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If OC is incorporated into a dry fuel and oxidizer mixture, then the irritant properties are maintained, but the OC degrades at high temperatures during pyrotechnic reactions

Engineering Contradiction:
Improveirritant propertiesVSAvoidcombustion temperature
Core Design Contradiction:
ReliabilityVSTemperature

Solution Approach 1:

The patent modifies the chemical composition parameters of the pyrotechnic mixture by incorporating specific stabilizing agents and adjusting the oxidizer-to-fuel ratio. This changes the combustion characteristics to operate at lower temperatures that preserve OC integrity while maintaining effective irritant properties.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite pyrotechnic composition that combines OC with compatible binders, stabilizers, and controlled oxidizers. This composite structure allows the OC to be protected from excessive heat while still participating in the pyrotechnic reaction, resolving the contradiction between temperature requirements and OC stability.

Inventive Principle:
Principle #40Composite materials

2Stability of the object's composition

If the pyrotechnic reaction temperature is lowered to prevent OC degradation, then OC stability is improved, but reaction time increases and burning becomes incomplete

Engineering Contradiction:
ImproveOC stabilityVSAvoidreaction speed
Core Design Contradiction:
Stability of the object's compositionVSProductivity

Solution Approach 1:

The patent applies local quality by creating zones within the pyrotechnic composition where different components serve specific functions. Certain areas contain faster-burning accelerants that initiate rapid reaction, while other areas contain OC-stabilizing components that maintain lower overall temperatures, thus achieving both speed and stability locally.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent designs a multi-stage combustion process where the pyrotechnic reaction occurs in periodic phases: an initial rapid ignition phase followed by a sustained lower-temperature phase that completes burning without degrading OC. This periodic action resolves the contradiction between reaction speed and OC stability.

Inventive Principle:
Principle #19Periodic action

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 solution enables the production of a pyrotechnic material that effectively disperses OC smoke with rapid onset and short duration of effects, minimizing eye irritation and allowing for clearer vision, while being easier to clean up and safer for use compared to traditional tear gas products.

Implementation Method 1

The smoke is generated by burning a mixture of fuel and oxidizer

Methodology Applied
Scientific EffectCombustion: Combustion

Implementation Method 2

The smoke that is produced disperses, and carries with it the irritant

Methodology Applied
Scientific EffectDispersion: Dispersion (of waves)

Data Source

PatentUS10654761B2Pyrotechnics containing oleoresin
Publication Date: 2020.05.19 DEFENSE TECHNOLOGY LLC
  • US10654761B2 patent drawing
  • US10654761B2 patent drawing

AI summary

A pyrotechnic composition includes a fuel, an oxidizer, flow and rate control agents and oleoresin capsicum as an irritant. The composition is useful in crowd control products. The composition contains rate control ingredients to maintain combustion at a temperature below the point of degradation of the oleoresin capsicum, balanced with a booster material to maintain combustion.