Missile Fragmentation Warhead Lateral Damping Control

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Solution Overview

Problem

Fragmentation warheads face challenges in restricting the lateral spread of fragments to avoid collateral damage, as existing systems often produce edge fragments with large exit angles, which can cause unintended damage.

Innovation Solution

Incorporating a fragmentation damping charge or filling, such as an explosive ring or metal powder, to exert lateral pressure or decelerate fragments, limiting the exit angle and preventing stray fragments, and using a deformation charge to adjust the focus of the warhead for specific targeting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If structural metal frames or retaining rings are used to prevent peripheral edge fragments, then lateral fragment spread is reduced, but secondary fragments with large exit angles are generated

Engineering Contradiction:
Improvelateral fragment spreadVSAvoidsecondary fragments
Core Design Contradiction:
Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

A fragmentation damping charge is introduced as an intermediary substance between the active charge and the fragmentation casing. This mediator absorbs excess energy and redirects fragment trajectories, preventing both lateral spread and secondary fragment generation by the rigid metal frames

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the physical state and distribution of materials within the warhead by introducing a fragmentation damping charge that modifies the pressure distribution and fragment velocity profiles, thereby controlling exit angles without relying on rigid structural reinforcements

Inventive Principle:
Principle #35Parameter changes

2Area of stationary object

If the fragmentation filling is designed to hurl fragments in a wide angle, then coverage area is increased, but accuracy for specific targets is reduced

Engineering Contradiction:
Improvecoverage areaVSAvoidtargeting accuracy
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The warhead incorporates switchable ignition modes that dynamically alter the fragmentation pattern. By controlling which charges are activated, the system can switch between a wide dispersion pattern for area coverage and a focused pattern for precision targeting, adapting to different mission requirements

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The fragmentation damping charge serves multiple functions: it limits lateral spread to define an effective direction, controls fragment exit angles for accuracy, and can be selectively activated to provide different fragmentation patterns. This multi-functionality allows a single warhead design to achieve both area coverage and precision targeting

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The solution effectively restricts fragments to a specified target area, minimizing collateral damage by controlling the exit angle and allowing for flexible targeting modes, enhancing the accuracy and adaptability of the warhead.

Implementation Method 1

designed such that when the active charge is ignited, fragments are hurled out of the fragmentation filling in the effective direction within a first exit opening angle

Methodology Applied
Scientific EffectExplosion: Explosion

Implementation Method 2

designed to exert a lateral damping pressure on the fragmentation filling upon ignition

Methodology Applied
Scientific EffectPressure: Pressure Increase

Implementation Method 3

designed such that the metal powder is released laterally from the fragmentation filling when the active charge is ignited

Methodology Applied
Scientific EffectExplosion: Explosion

Data Source

PatentUS11118880B2Fragmentation warhead for a missile
Publication Date: 2021.09.14 TDW GES FR VERTEIDIGUNGSTECHN WIRKSYST MBH
  • US11118880B2 patent drawing
  • US11118880B2 patent drawing
  • US11118880B2 patent drawing

AI summary

A fragmentation warhead for a missile includes a warhead casing, an active charge arranged within the warhead casing, and a fragmentation filling arranged within the warhead casing in front of the active charge of the fragmentation warhead in an effective direction of the fragmentation warhead. When the active charge is ignited, fragments are hurled out of the fragmentation filling in the effective direction within a first outlet opening angle. The fragmentation warhead includes a fragmentation damping charge, which is arranged within the warhead casing laterally to the effective direction on the fragmentation filling, to exert a lateral damping pressure on the fragmentation filling upon ignition. The fragmentation warhead includes a fragmentation damping filling, which is arranged within the warhead casing laterally to the effective direction on the fragmentation filling such that the metal powder is released laterally from the fragmentation filling when the active charge is ignited.