Projectile Fuse Programming via Segmented Dual-Coil Induction

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Solution Overview

Problem

Existing programming devices for projectile fuses require overdimensioned control electronics and generate high electromagnetic radiation due to the use of a single programming coil, making them difficult to integrate and inefficient.

Innovation Solution

A dual-coil programming system where each coil is linked to individual electronic control means, allowing the projectile to pass successively in front of each coil, with the programming signal modulated based on distance, reducing energy consumption and electromagnetic radiation by powering only the necessary coils during the projectile's passage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single programming coil is used to transmit programming signals to the fuse, then the programming can be performed during projectile passage, but the control electronics become overdimensioned and electromagnetic radiation increases

Engineering Contradiction:

Improveprogramming reliabilityVSAvoidcontrol electronics size

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The single programming coil is divided into multiple separate coils (first programming coil and second programming coil) arranged along the projectile feed path. Each coil is independently controlled by separate electronic control means, allowing distributed programming functionality that reduces the burden on individual electronics components while maintaining reliable programming throughout the projectile passage.

Inventive Principle:

Principle #1Segmentation

2Reliability

If a single programming coil is used, then programming can be achieved, but electromagnetic losses and induced radiation become too high

Engineering Contradiction:

Improveprogramming reliabilityVSAvoidelectromagnetic radiation

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The programming function is segmented across multiple coils spaced along the feed path. Each coil operates at lower power levels compared to a single high-power coil, reducing electromagnetic radiation and losses while distributing the programming action over time and space during projectile passage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The programming is performed periodically as the projectile passes each coil in sequence during its movement through the feed mechanism. This periodic action across multiple coils achieves reliable programming while allowing each coil to operate intermittently at lower power, reducing overall electromagnetic radiation.

Inventive Principle:

Principle #19Periodic action

3Reliability

If a single programming coil with extended coverage is used, then programming reliability improves, but control electronics must be overdimensioned

Engineering Contradiction:

Improveprogramming reliabilityVSAvoidcontrol electronics capacity

Core Design Contradiction:

ReliabilityVSPower

Solution Approach 1:

The programming task is divided into multiple smaller tasks performed by separate coils at different locations. Each coil handles a portion of the programming function during a specific time window as the projectile passes, allowing use of smaller, more manageable electronics for each coil rather than requiring oversized electronics to handle the entire programming load simultaneously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The programming is distributed across multiple coils positioned along the projectile path, so that programming actions are performed preliminarily and sequentially as the projectile passes each coil. This approach allows programming to be completed progressively rather than requiring all programming capacity to be available simultaneously, reducing the power requirements for individual control electronics.

Inventive Principle:

Principle #10Preliminary action

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 enables the implementation of more reasonable-sized electronics and reduces electromagnetic radiation, achieving efficient and reliable programming of projectile fuses while minimizing energy consumption and interference.

Implementation Method 1

programming is made in the fuse by induction by means of programming coils

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS8215220B2Programming process for the fuse of a projectile and programming device enabling the implementation of such process

Publication Date: 2012.07.10 KNDS AMMO FRANCE

AI summary

The invention relates to a programming process and device for a fuse of a projectile using a programming coil transmitting by induction a programming signal to reception means integral with the fuse. This process is characterized in that the programming signal is transmitted from at least one second programming coil that is separate from the first one, each coil being linked individually to electronic control means and the two coils being arranged so as to be able to lie in proximity to the fuse of the projectile when the latter passes in the feed means of the weapon, the coils being arranged such that the projectile fuse passes successively in front of each coil, particularly adapted to the programming of medium caliber projectiles.