Active Body Infrared Decoy with Segmented High-Energy Mass

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Solution Overview

Problem

Existing infrared decoy technologies for protecting military objects like aircraft from modern missiles are ineffective at high altitudes and high speeds, as they fail to maintain radiation intensity and duration, and are susceptible to interference and efficiency loss due to flow effects.

Innovation Solution

An active body with monobasic or polybasic high-energy active mass blocks featuring surface structures, interior channels, and metallic cover plates, which control disintegration speed and duration, and includes gas bridges for temperature management and ignition, ensuring sustained radiation and resistance to interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If conventional infrared decoy technologies are used, then they can provide basic infrared radiation, but they fail to maintain radiation intensity and duration at high altitudes and high speeds

Engineering Contradiction:

Improveduration of radiationVSAvoideffectiveness at high altitude and speed

Core Design Contradiction:

Duration of action of moving objectVSReliability

Solution Approach 1:

The active mass is divided into multiple blocks with controlled surface structures and interior channels. This segmentation allows for regulated disintegration and sustained radiation emission over extended periods, resolving the contradiction between duration and reliability under extreme conditions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent modifies physical parameters including surface-to-volume ratio through surface structures, internal channel geometry, and material composition. These parameter changes enable the decoy to maintain radiation intensity and duration across varying altitude and speed conditions, improving reliability while extending action duration.

Inventive Principle:

Principle #35Parameter changes

2Illumination intensity

If high radiation intensity is achieved, then the decoy can counter missile guidance, but the action period is insufficient

Engineering Contradiction:

Improveradiation intensityVSAvoidaction period

Core Design Contradiction:

Illumination intensityVSDuration of action of moving object

Solution Approach 1:

The controlled disintegration process creates periodic emission phases through the sequential burning of active mass blocks. Interior channels regulate the release rate, creating a sustained periodic action that maintains high radiation intensity throughout the extended action period.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The design ensures continuous radiation emission through controlled disintegration of multiple active mass blocks. The interior channels and surface structures regulate the burning process to maintain uninterrupted high-intensity radiation throughout the entire action period, preventing gaps in the infrared signature.

Inventive Principle:

Principle #20Continuity of useful action

3Power

If the active mass disintegrates quickly, then high initial radiation is achieved, but the duration of effectiveness is reduced

Engineering Contradiction:

Improveinitial radiation outputVSAvoidduration of effectiveness

Core Design Contradiction:

PowerVSDuration of action of moving object

Solution Approach 1:

The disintegration process is made dynamic and controllable through surface structures and interior channels. These features regulate the burning rate to achieve high initial power output while extending the duration of effectiveness, creating an optimized power-time profile for infrared decoy performance.

Inventive Principle:

Principle #15Dynamics

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 active body provides a high-intensity, long-lasting infrared radiation signature effective at high altitudes and speeds, with controlled blossoming behavior and reduced interference, effectively countering modern missile guidance systems.

Implementation Method 1

the active masses simulating the target body are brought into the position of the decoy body to be produced, and are decomposed there in such a manner that a spectral-spatial target signature of the object for a target homing head is generated

Methodology Applied

Scientific EffectCombustion: Combustion

Implementation Method 2

Depending on the type of structure and its depth, this requires an enlargement of the surface, which allows control of speed, with which the active mass block disintegrates

Methodology Applied

Scientific EffectSurface area control:

Implementation Method 3

provide an active body, which against modern missiles has as an effective infrared decoy target... an object-like spectral radiation signature having a high radiation intensity

Methodology Applied

Scientific EffectInfrared radiation: Infrared Radiation

Data Source

PatentUS8783183B2Active body

Publication Date: 2014.07.22 RHEINMETALL WAFFE MUNITION GMBH

AI summary

An active body is provided that includes at least one active mass block made of monobasic or polybasic high-energy materials such as a nitrocellulose mixture, for example, comprising approximately 60 percent nitroglycerin and 40 percent diethylene glycol dinitrate, which is provided with structures both on a surface and on an interior. In addition, the inner structures can be filled with an active mass substance. The ignition is triggered by a pyrotechnical primer composition, which initiates the active body, preferably from the inside.