Dual-Mass Warhead Forward Side Fragmentation Pattern
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Solution Overview
Problem
Fragmentation warheads often cause collateral damage due to the radial distribution of metal fragments, which can harm friendly troops and the launch platform, as they expel fragments in all directions, including backwards, reducing their effectiveness and increasing the risk of damage.
Innovation Solution
A dual-mass fragmentation warhead design that includes a forward-firing and side-firing fragmentation assembly, where the explosive containment structure and case are formed of materials that pulverize upon detonation, minimizing radial fragments and optimizing the taper and shape of the explosive and fragmentation assemblies to enhance mass efficiency and control the firing patterns, thereby reducing collateral damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a radial blast fragmentation warhead expels fragments in all directions, then the lethality coverage is maximized, but the risk of collateral damage to friendly troops and launch platform increases
Solution Approach 1:
The warhead divides the fragment expelling function into two separate assemblies: a forward-firing fragmentation assembly and a side-firing fragmentation assembly. This segmentation allows the lethal fragments to be directed only forward and to the sides, excluding the rear direction, thereby maintaining lethality coverage while eliminating collateral damage risk to the launch platform
Solution Approach 2:
The warhead employs asymmetric fragment distribution by configuring the forward-firing assembly to expel fragments in a forward cone and the side-firing assembly to expel fragments laterally. This asymmetric pattern concentrates lethal effect in forward and side directions while leaving the rear direction clear, resolving the contradiction between coverage and collateral damage
2Object-affected harmful factors
If a forward blast fragmentation warhead confines fragments to a narrow forward cone, then collateral damage is reduced, but the aimpoint and detonation timing tolerances become tight
Solution Approach 1:
The warhead segments the fragment distribution into two functional assemblies with different directional characteristics. The forward-firing assembly provides a concentrated forward cone for precision engagement, while the side-firing assembly adds lateral coverage. This segmentation allows the system to maintain tight tolerances for forward targets while expanding overall coverage through the side-firing component
Solution Approach 2:
The warhead merges two fragmentation assemblies with different firing patterns (forward and side) into a single integrated system. This combination allows the forward-firing assembly to maintain precision with tight tolerances while the side-firing assembly extends the effective coverage area, achieving both precision and expanded coverage simultaneously
3Force
If the steel case confines radial energy to redirect it forward, then fragment propelling force is increased, but fragments are still expelled in all directions including backwards
Solution Approach 1:
The warhead segments the fragment-generating function from the case structure itself by using a forward-firing fragmentation assembly and a side-firing fragmentation assembly that expel pre-formed fragments. This segmentation eliminates the need for the steel case to pulverize into radial fragments, thereby maintaining high propelling force through controlled confinement while preventing harmful radial fragment distribution
Solution Approach 2:
The warhead converts the potentially harmful radial fragmentation of the steel case into a beneficial controlled fragment expelling system. By using dedicated fragmentation assemblies with controlled charge configurations, the system harnesses the explosive energy to propel fragments in desired directions (forward and side) while eliminating the harmful backward-directed fragments that would result from case pulverization
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 dual-mass warhead achieves high lethality with reduced collateral damage by expelling fragments primarily in forward and side patterns, minimizing fragments directed towards the launch platform, and maintaining high mass efficiency, thus enhancing the weapon's effectiveness while minimizing harm to friendly forces and equipment.
Implementation Method 1
Detonation of the explosive produces a gas blast that emanates radially from the center point pulverizing the case and expelling the pre-cut metal fragments in all directions
Implementation Method 2
The booster explosive is positioned in an aft section of the case. The steel case confines a portion of the radial energy of the pressure wave (albeit for a very short duration) caused by detonation of the explosive and redirects it along the body axis of the warhead
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
A high-lethality fragmentation warhead (14) with reduced risk of collateral damage to the warhead launch platform. High lethality is achieved with a forward-firing fragmentation assembly (54) placed in front of the explosive (38) and a side-firing fragmentation assembly (64) placed in a void space in the aft section of the explosive (38).