Triangular MICLIC Charge Layout for Downward Blast Transfer
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Solution Overview
Problem
Conventional mine clearing line charges (MICLICs) inefficiently utilize explosive material due to 50% of the detonation shock wave being directed upwards, reducing the effectiveness in clearing minefields.
Innovation Solution
Designing explosive blocks in a triangular prism shape with the detonating cord extending through the centroid of two triangular faces, ensuring more explosive material is below the detonating cord for enhanced energy transfer and using parachutes or vanes to ensure proper landing orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional square prism explosive blocks are used with central detonation, then the structure is simple and easy to manufacture, but 50% of the detonation shock wave is directed upwards and does not contribute to clearing buried mines
Solution Approach 1:
The patent applies asymmetry by changing the explosive block shape from a symmetric square prism to an asymmetric triangular prism. This geometric modification ensures that when the block is positioned with one triangular face down on the ground, the detonation shock wave is directed primarily downward into the ground where buried mines are located, rather than upward into the air. The asymmetric shape creates an optimal angle of shock wave propagation that maximizes energy transfer to the ground while maintaining manufacturing feasibility through extrusion processes.
2Ease of manufacture
If square prism explosive blocks are used, then the manufacturing process is simple, but the contact area with the ground is insufficient to transfer energy effectively
Solution Approach 1:
The patent applies curvature by modifying the rectangular faces of the triangular prism to be curved inward rather than flat. This curvature increases the surface area of the explosive block that contacts the ground when positioned with a triangular face down. The curved surfaces provide a larger contact area for energy transfer from the detonation shock wave to the ground, improving the effectiveness of mine clearance while still allowing for simple extrusion manufacturing.
3Quantity of substance
If the explosive block shape is changed to triangular prism, then the explosive material distribution is improved for downward detonation, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the explosive charge into multiple triangular prism segments that can be manufactured separately and then assembled along the detonating cord. Each segment can be produced using standard extrusion processes, and the segments are connected through the detonating cord that passes through apertures in each block. This segmentation approach maintains the geometric benefits of triangular prisms for optimized explosive material distribution while keeping the manufacturing process manageable through modular assembly rather than requiring complex monolithic construction.
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
Increases the explosive material below the detonating cord by 13%, enhancing the efficiency of mine clearance with a 66% increase in ground contact area, resulting in more effective mine path clearing.
Implementation Method 1
Each of the plurality of explosive blocks is configured such that, upon landing, a majority of the explosive material is between a ground and a horizontal plane of the detonating cord
Implementation Method 2
50% of the detonation shock wave, in the square prism configuration, is directed upwards above the midpoint plane
Implementation Method 3
a fabric vane having one end thereof attached to the sleeve to cause drag as the mine clearing device falls to the ground
Data Source
AI summary
A mine clearing device configured to be propelled into an area and detonated after landing has a detonating cord and a plurality of explosive blocks along the detonating cord. Each of the plurality of explosive blocks is configured such that, upon landing, a majority of the explosive material is between a ground and a horizontal plane of the detonating cord.


