X-Jet Linear Shaped Charge Spinal Element Detonation Wave Alignment
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Solution Overview
Problem
Conventional linear shaped charges (LSCs) suffer from diminished detonation efficiency due to the planar detonation wave traveling perpendicular to the molten jet, resulting in suboptimal force transfer and penetration capability.
Innovation Solution
The enhanced linear shaped charge (X-Jet) incorporates a spinal charge element with a hollowed chevron-shaped sheath and a spinal casing, where the spinal charge material has a higher detonation velocity than the main charge material, generating a spinal detonation wave that propagates along the length of the sheath, inducing asynchronous detonation of the main charge material to produce a molten jet parallel to the detonation wave.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a planar detonation wave is used in conventional LSC, then the structure is simple, but the detonation efficiency is diminished due to perpendicular orientation with molten jet
Solution Approach 1:
The charge is segmented into two distinct components: a spinal charge element positioned at the upper apex and a main charge material filling the remainder of the sheath. This segmentation allows the spinal charge to generate a longitudinal detonation wave that propagates parallel to the sheath axis, while the main charge generates a transverse detonation wave that produces the molten jet perpendicular to the axis, resolving the orientation conflict and improving detonation efficiency
Solution Approach 2:
The invention introduces a longitudinal dimension to the detonation wave propagation by positioning the spinal charge element along the sheath axis. This creates a three-dimensional detonation pattern where the spinal charge wave travels lengthwise through the sheath, inducing the main charge to detonate in a manner that produces molten jet perpendicular to both the sheath axis and the spinal charge wave direction, thereby achieving optimal force transfer
2Device complexity
If the molten jet travels perpendicular to the detonation wave, then the conventional design is maintained, but the force transfer is suboptimal reducing penetration capability
Solution Approach 1:
By dividing the charge into spinal and main components, the invention enables the spinal charge to generate a longitudinal wave that induces the main charge to produce a transverse wave, creating optimal geometric relationship between detonation wave and molten jet for maximum force transfer and penetration capability
Solution Approach 2:
The invention changes the detonation velocity parameter by selecting spinal charge material with higher detonation velocity than the main charge material. This parameter difference ensures the spinal detonation wave propagates faster along the sheath, effectively inducing the main charge to detonate in the desired sequence and orientation, thereby optimizing force transfer to the molten jet
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
This configuration enhances detonation efficiency and increases the penetration capability of the molten jet by ensuring the molten jet realizes the full force of the detonation wave, achieving improved target penetration.
Implementation Method 1
detonating the spinal charge material to generate the spinal detonation wave that travels in a spinal direction
Implementation Method 2
detonating the main charge material via the spinal detonation wave to generate the main detonation wave
Implementation Method 3
A linear shaped charge (LSC) is an explosive device consisting of an explosive material encased in a metal tube (or sheath). When the LSC is detonated at one end, a planar detonation wave propagates axially along the length of the LSC. As each cross-section is detonated, a high-velocity molten jet of sheath material is projected downward from the lower apex.
Data Source
AI summary
An enhanced linear shaped charge (X-Jet) includes a sheath and a spinal charge element. The sheath extends along an axis between a first end and a second end to define a sheath length. The sheath has a first hollowed chevron-shaped cross-section that defines a main charge cavity, an upper apex, and a lower apex. The spinal charge element is disposed within the main charge cavity and abuts the upper apex. The spinal charge element further includes a spinal casing that extends along the sheath length to define a spinal length. The spinal casing has a hollowed cross-section defining a spinal charge cavity.