Multi-purpose Munition Selectable Blast Fragmentation Mode
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Solution Overview
Problem
Current munitions are designed for single purposes, requiring multiple units to address various battlefield effects, leading to logistical and economic burdens, as well as safety issues due to the need for manual assembly and mode switching in existing multi-purpose solutions.
Innovation Solution
A multi-purpose munition with a selectable fragmentation or blast mode, featuring a core of aluminized HMX surrounded by concentric layers and a fuze that initiates an energetic chain corresponding to the selected mode, allowing for quick and easy switching between effects without manual assembly or disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single-purpose munitions are used for each battlefield effect, then reliability and effectiveness are improved, but device complexity and logistical burden increase
Solution Approach 1:
The munition is designed with a universal structure that can perform multiple battlefield effects (fragmentation and blast) through a single device. The housing serves dual purposes: as a fragmentation source when intact and as a containment structure for controlled blast effect. This eliminates the need for multiple separate munitions, reducing logistical burden while maintaining reliability for different mission requirements
2Adaptability or versatility
If manual assembly or disassembly is required to switch modes, then adaptability is improved, but ease of operation deteriorates
Solution Approach 1:
The munition incorporates a dynamic selection mechanism that allows the user to switch between fragmentation and blast modes through simple mechanical manipulation of the fuze assembly. The selector switch on the fuze enables mode changes without disassembly, making the adaptability feature easy to operate in field conditions while maintaining the ability to switch between different operational modes
3Adaptability or versatility
If multi-purpose munitions require manual assembly, then adaptability is improved, but productivity deteriorates
Solution Approach 1:
The munition is pre-assembled in a ready-to-deploy state with all components (housing, energetic layers, fuze, and selection mechanism) integrated before delivery to the user. The fragmentation layer and secondary energetic layer are pre-positioned within the housing, and the fuze is pre-installed with the mode selector in place. This preliminary preparation eliminates the need for manual assembly operations, allowing soldiers to quickly deploy the munition by simply selecting the desired mode and activating it, thereby maintaining high productivity while achieving multi-purpose capability
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 increases capability options and reduces physical and logistical burdens by providing two effects in one unit, offering flexibility and ease of use while minimizing payload and transportation needs, with the ability to switch modes quickly and safely.
Implementation Method 1
The energetic chain corresponding to the blast mode comprises a detonation of the secondary energetic layer to remove the fragmentation layer at a predetermined time prior to a detonation of the main explosive fill
Data Source
AI summary
A multi-purpose munition operates in either a blast mode or a fragmentation mode according to a user input. When operating in the fragmentation mode, a fuze initiates a main explosive fill of the munition which in turn disperses fragments formed from a fragmentation layer of the munition. When operating in a blast mode, prior to initiating the main explosive fill, the fuze initiates a secondary energetic layer which discards the fragmentation layer. The fuze then initiates the main explosive fill thereby producing a blast effect.