Minigun Barrel Clamp With Impeller Cooling

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Solution Overview

Problem

Existing Gatling-type miniguns face challenges in minimizing jams, extending operational life, and improving ease of use, particularly in the design of their barrel assemblies for efficient cooling and weight reduction.

Innovation Solution

A barrel clamp assembly featuring a barrel clamp tube with longitudinal openings, a flash suppressor at the front, a barrel clamp collar at the rear, and an impeller mounted between them, which provides improved cooling and reduces weight by allowing air flow and eliminating the need for a central support shaft.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If a traditional solid barrel clamp tube is used, then structural strength is maintained, but weight is excessive and cooling efficiency is insufficient

Engineering Contradiction:
Improvebarrel clamp weightVSAvoidbarrel clamp strength
Core Design Contradiction:
Weight of moving objectVSStrength

Solution Approach 1:

The barrel clamp tube is designed with longitudinal openings creating a porous-like structure that reduces weight while maintaining structural integrity. The openings allow air flow through the barrel clamp for cooling purposes, and the remaining material is configured to provide sufficient strength to hold and rotate the barrels during operation.

Inventive Principle:
Principle #31Porous materials

2Temperature

If traditional barrel cooling methods are used, then cooling is provided, but device complexity increases and weight increases

Engineering Contradiction:
Improvebarrel cooling efficiencyVSAvoidcooling system complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The cooling function is merged with the structural barrel clamp tube by incorporating longitudinal openings directly into the tube itself. An impeller is mounted within the same tube, combining the structural support function with the cooling air generation function in a single integrated component rather than separate systems.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The barrel clamp tube structure itself serves the dual purpose of holding barrels and providing cooling. The longitudinal openings in the tube allow air to pass through, and the impeller mounted within the tube generates airflow that cools the barrels, making the structural component also responsible for thermal management.

Inventive Principle:
Principle #25Self-service

3Stability of the object's composition

If a central support shaft is used to hold barrels, then structural stability is maintained, but weight increases and air flow is blocked

Engineering Contradiction:
Improvebarrel support stabilityVSAvoidbarrel support structure weight
Core Design Contradiction:
Stability of the object's compositionVSWeight of moving object

Solution Approach 1:

The central support shaft is removed from the design. Instead of using a central shaft to hold and rotate the barrels, the barrels are supported and rotated by the barrel clamp tube with longitudinal openings and the impeller mechanism, eliminating the unnecessary central shaft that would block air flow and add weight.

Inventive Principle:
Principle #2Taking out (Extraction)

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 results in a lightweight barrel clamp with enhanced performance and cooling characteristics, reducing the risk of jams and extending the operational life of the minigun while simplifying its design and operation.

Implementation Method 1

An impeller is mounted to the barrel clamp tube between the flash suppressor and the barrel clamp collar

Methodology Applied
Scientific EffectImpeller: Impeller

Implementation Method 2

the impeller... provides improved cooling... by allowing air flow

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Data Source

PatentEP3004785B1Minigun with improved barrel clamp comprising an impeller for cooling
Publication Date: 2019.05.22 PROFENSE LLC
  • EP3004785B1 patent drawingFigure 1A~1B
  • EP3004785B1 patent drawingFigure 2
  • EP3004785B1 patent drawingFigure 3

AI summary

An improved barrel clamp assembly for a multi-barreled minigun includes a barrel clamp tube having a front end, a rear end, and a plurality of longitudinal openings extending between the front end and the rear end. An impeller is mounted in the barrel clamp tube between the tube front end and the tube rear end. The impeller includes a plurality of impeller blades that are spaced around a periphery of the impeller and that project forward from a rear flange portion of the impeller and the impeller blades define a plurality of air channels. A barrel assembly includes the barrel clamp tube, a flash suppressor mounted to the front end of the barrel clamp tube, and a barrel clamp co liar mounted to the rear end of the barrel clamp tube. The impeller is mounted to the barrel clamp tube between the flash suppressor and the barrel clamp collar.