Warhead Detonation Control via Dual Ignition Timing
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Solution Overview
Problem
Existing warhead systems cause significant collateral damage due to their inability to precisely control the detonation and deflagration of explosive charges, leading to inefficient fragmentation and blast pressure distribution, which is inadequate for modern military deployment scenarios requiring flexible and targeted effects.
Innovation Solution
A device with two ignition devices arranged adjacent to each other, where the second ignition device is located at the rear end of the active system, allowing for controlled initiation of a detonating cord or shaped charge, enabling synchronized reaction fronts along the charge's longitudinal axis, thereby scaling effective areas and lethality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a single ignition device is used to detonate the entire charge, then maximum blast pressure and fragmentation effect are achieved, but collateral damage increases and precision is reduced
Solution Approach 1:
The explosive charge is divided into two distinct parts: a first charge (L1) and a second charge (L2). Each charge has its own ignition device (first ignition device I1 and second ignition device I2), allowing independent control of detonation and deflagration processes. This segmentation enables precise control over the spatial and temporal distribution of explosive effects, reducing collateral damage while maintaining effectiveness against targeted threats.
2Speed
If the detonator is initiated very late to convert a large proportion of the explosive charge by superimposed reaction, then fragmentation velocities are reduced, but effective and damage areas do not change significantly
Solution Approach 1:
The first ignition device I1 is activated before the second ignition device I2, creating a preliminary deflagration front that propagates through the first charge L1. This preliminary action establishes controlled superimposition conditions that reduce fragmentation velocities while the spatial arrangement of the two ignition devices ensures that the damage area is still effectively controlled. The time delay between ignitions is carefully managed to achieve the desired velocity reduction without sacrificing damage area effectiveness.
3Stability of the object's composition
If two ignition devices are arranged adjacent to each other, then synchronized reaction fronts are achieved along the charge length, but device complexity increases
Solution Approach 1:
The two ignition devices I1 and I2 are arranged adjacent to each other in a compact configuration, merging their spatial occupation into a concentrated region. This merging approach maintains consistent superimposition conditions along the entire length of the charge by ensuring both ignition points operate in close proximity, while simultaneously minimizing the increase in overall device complexity through efficient spatial arrangement.
4Duration of action of moving object
If the first charge is initiated before the second charge, then controlled deflagration is achieved, but timing precision requirements increase
Solution Approach 1:
The system incorporates feedback mechanisms to monitor and control the ignition timing between the first and second charges. By detecting the actual deflagration progress and adjusting the second ignition timing accordingly, the system maintains precise temporal control over the superimposition process, ensuring optimal deflagration duration while compensating for variations in explosive material properties and environmental conditions.
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 solution reduces collateral damage by ensuring consistent superimposition conditions along the charge length, allowing for precise scaling of fragmentation velocities and blast pressure, enhancing the warhead's effectiveness against military and non-military targets while minimizing unintended damage.
Implementation Method 1
the first charge initiating the deflagration of a second charge
Implementation Method 2
a second ignition device for the detonative initiation of the second charge
Data Source
Figure 1~2
Figure 3
AI summary
The device for scaling warheads and bombs is achieved by inserting one or more detonating cords (SP) longitudinally into the charge. These cords, with their limited initiation capability, cause a subdetonative transformation of the surrounding explosive. Since the detonation velocity in the detonating cord (SP) is much higher than the radially developing subdetonative reaction, a lagging reaction front (DFL) forms in the shape of a Mach cone. The scalability of the warhead's detonative power is achieved by initiating (re-igniting) a detonation reaction within the subdetonative reaction time window using the detonator. Scalability is achieved by controlling the time interval between these two reaction mechanisms (subdetonative reaction and detonation). Both reactions are initiated from the same side.