Insensitive Explosive Charge Initiation via Intermediate Mediator
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Solution Overview
Problem
Current explosive charges with large critical diameters require complex and bulky priming structures, reducing the effective volume and increasing vulnerability in weapon systems.
Innovation Solution
Incorporating a second explosive charge with a smaller critical diameter between the insensitive explosive charge and the detonation wave transmission element, allowing for initiation without a bulky initiation structure and maintaining system vulnerability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bulky priming structure is used to initiate insensitive explosive charges with large critical diameters, then the initiation reliability is improved, but the useful volume of the explosive composition is reduced and the vulnerability of the weapon system increases
Solution Approach 1:
A second explosive charge with intermediate critical diameter properties is introduced as a mediator between the detonator and the first insensitive explosive charge. This intermediate charge acts as a bridge that translates the small-diameter detonation from the detonator into effective initiation of the large-diameter first charge, eliminating the need for bulky priming structures while maintaining initiation reliability.
Solution Approach 2:
The invention changes the critical diameter parameter by introducing a second explosive charge with different critical diameter characteristics. By selecting an explosive composition for the second charge whose critical diameter is better adapted to the detonator output, the system achieves reliable initiation of the first charge without requiring increased priming structure dimensions.
2Reliability
If a bulky priming structure is used to initiate insensitive explosive charges, then the initiation reliability is improved, but the vulnerability of the weapon system increases
Solution Approach 1:
The second explosive charge serves as an intermediary that decouples the vulnerability issue from the initiation reliability requirement. By placing this intermediate charge closer to the detonator where the detonation wave is strongest, it reliably initiates the first charge without requiring the first charge itself to be in a vulnerable bulky structure.
Solution Approach 2:
By changing the explosive composition parameters of the second charge to have more favorable critical diameter characteristics, the system achieves reliable initiation while keeping the overall structure compact and less vulnerable to accidental initiation or damage.
3Volume of moving object
If a second explosive charge with smaller critical diameter is inserted between the first explosive charge and the transmission element, then the useful volume is maximized, but the device complexity increases
Solution Approach 1:
The explosive charge system is segmented into two distinct explosive charges with different functional roles. The first charge provides the main explosive effect with large volume, while the second charge provides the initiation function with compact dimensions. This segmentation allows each component to be optimized for its specific function, maximizing useful volume while keeping the added complexity manageable.
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
Enables the initiation of insensitive explosive charges with large critical diameters without increasing the size or vulnerability of the ammunition, maximizing the useful volume occupied by the explosive composition.
Implementation Method 1
a detonator, a detonation wave transmission element comprising at least one detonation wave transmission line
Implementation Method 2
each transmission line comprising at least one through opening formed in the thickness of the transmission element as well as a channel opening into said through aperture, a detonation wave propagation material being present in said channel and said aperture
Implementation Method 3
a second explosive charge inserted between the first explosive charge and the transmission element, the through opening leading to the second explosive charge
Data Source
Figure 1~3
AI summary
The invention relates to an explosive charge (1) comprising: - a detonator (3); - an element (7) for transmitting a detonation wave comprising at least one line for transmitting the detonation wave (F), each transmission line comprising at least one through-hole (170a) formed in the body of the transmission element, as well as a channel (171a) emerging in said through-hole, a material (M) for propagating the detonation wave being present in said channel and said hole, said propagation material having a first critical diameter; - a first explosive charge element (5) having a second critical diameter greater than the first critical diameter; and - a second explosive charge element (9) interposed between the first explosive charge element and the transmission element, the through-hole emerging on the second explosive charge element and the second explosive charge element having a third critical diameter greater than or equal to the first critical diameter and less than the second critical diameter.