EP1173395A1 - Composition nebuleuse pyrotechnique destinee a produire un aerosol impenetrable dans la plage spectrale visible, des infrarouges et des ondes millimetriques - Google Patents

Composition nebuleuse pyrotechnique destinee a produire un aerosol impenetrable dans la plage spectrale visible, des infrarouges et des ondes millimetriques

Info

Publication number
EP1173395A1
EP1173395A1 EP00906220A EP00906220A EP1173395A1 EP 1173395 A1 EP1173395 A1 EP 1173395A1 EP 00906220 A EP00906220 A EP 00906220A EP 00906220 A EP00906220 A EP 00906220A EP 1173395 A1 EP1173395 A1 EP 1173395A1
Authority
EP
European Patent Office
Prior art keywords
pyrotechnic
dipoles
fibers
visible
infrared
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00906220A
Other languages
German (de)
English (en)
Other versions
EP1173395B1 (fr
Inventor
Ernst-Christian Koch
Josef Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pepete GmbH
Original Assignee
Piepenbrock Pyrotechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Piepenbrock Pyrotechnik GmbH filed Critical Piepenbrock Pyrotechnik GmbH
Publication of EP1173395A1 publication Critical patent/EP1173395A1/fr
Application granted granted Critical
Publication of EP1173395B1 publication Critical patent/EP1173395B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/70—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies for dispensing radar chaff or infrared material
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06D—MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
    • C06D3/00—Generation of smoke or mist (chemical part)

Definitions

  • Pyrotechnic mist set for generating an aerosol that is impenetrable in the visible, infrared and millimeter-wave range
  • the present invention relates to a pyrotechnic mist set for generating an aerosol impenetrable in the visible, infrared and millimeter wave range.
  • the human and ecotoxicologically compatible smoke substance consists of pre-assembled dipoles for radiation in the frequency range of 2 - 300 GHz, which is suitable for the generation of an impermeable aerosol in the millimeter wave range, and suitable smoke substances that absorb in the visible and infrared range.
  • a major problem in use with tarna aerosols is the shielding of electromagnetic radiation in the frequency range from 2 to 300 GHz; preferably in the atmospheric damping windows between 2-18 GHz and in particular at 35, 94, 140 and 220 GHz, since target detection and tracking systems (radars) of ground-to-surface guided weapons typically work in these frequency bands (e.g. SMArt 155, Longbow Hellfire).
  • radars target detection and tracking systems
  • camouflage methods There are currently only two methods known as camouflage methods in this frequency range.
  • the strand and spiral-shaped graphite fibers produced by thermally induced expansion of graphite intercalation compounds are only statistically distributed with respect to their length. It is therefore not possible to produce only graphite fibers of a certain length (e.g. at 35 and 94 GHz), which means that the effectiveness (damping performance) of aerosols produced in this way is only very limited in individual spectral ranges. Furthermore, alveolar particles are also generated, which makes the risk of respiratory diseases evident.
  • the fog sets according to the invention contain as pre-assembled heat-resistant dipoles made of graphite or a ceramic material made conductive or in-situ conductive, such as ziconium oxide or aluminum oxide, which are coated with pyrotechnic substances. These dipoles are entrained by the hot swathes of gas when the known mist theorem burns up.
  • the dipoles consist of thin, conductive fibers, the length of which is matched to the frequency bands common to typical target acquisition and tracking systems. For the frequencies of 35, 94, 140 u. 220 Ghz, for example, a mixture of lengths from 1 to 30 mm is used.
  • the fiber diameter is 0.001 to 0.1 mm, preferably 0.005 to 0.02 mm.
  • the conductive fibers consist either of metal or graphite, which is produced by charring spun plastic fibers, or of glass, ceramic or plastic fibers, which are made conductive by a metal coating. Methods for coating surfaces with a very thin metal film are known.
  • metals can be deposited on the fibers from the gas phase.
  • the pure metals can be deposited on the fibers from transition metal organyls, in particular carbonyls, by heating under reduced pressure.
  • the / ns / uv-conductive is also conceivable with the help of a pyrotechnic coating. Under the influence of the reaction React heat from the main theorem to form a conductive, for example metallic, coating. Pyrotechnic switch systems are therefore suitable as coating materials for the ceramic fibers. Suitable systems are in the scheme. 1 reproduced.
  • the dipole fiber 3 is first coated according to the invention with a phosphor or phosphor sulfide coating 2, which burns off after the dipoles have been applied and distributed and increases their buoyancy or slows their rate of descent and additionally generates a strong IR emission .
  • these fibers also have an ignition coating 1, which comprises a known, easily combustible pyrotechnic mass from a fuel, for example red phosphorus, hexachlorocyclohexane, metal powder etc., an oxidizing agent, for example alkali nitrate, alkali perchlorate etc., and a binder a polymeric plastic and, if appropriate, also contains combustion moderators.
  • a cover layer (not shown in the figure) made of a plastic lacquer can optionally also be provided.
  • the thickness of all the layers corresponds to the size of the fiber itself, ie it has a thickness of 0.001 to 0.1 mm, preferably 0.01 to 0.02 mm, and is usually obtained by immersing or spraying the fibers with appropriate solutions or suspensions of the constituents and drying them of the solvent.
  • the fiber dipoles according to the invention are mixed with known pyrotechnic nebulas, which produce aerosols which are highly scattering and absorbing in the visible and infrared spectral range, and are shaped into compacts or granules suitable for application.
  • the fibers After the fibers have dried, they are immersed in a suspension of RRootteemm PPhhoosspphhoorr ((5500 %%)), BBiiss (( ⁇ 55 --ccyyccllooppeennttaaddiieennyyll) iron (25%), potassium nitrate (23%) and a novolak binder ( 2%) coated.
  • An active composition according to the invention is produced from 100 g of pretreated fibers and a conventional camouflage fog set, for example according to the following recipe: 2750 g of red phosphorus, 990 g of potassium nitrate, 220 g of silicon, 220 g of boron, 220 g of zirconium conium / iron alloy and 990 g Macroplast binder (30% solids) is created by gradually adding the components to the red phosphorus.
  • the solvent-moist mass is sieved (7 mm mesh size) and dried for 20 minutes in a vacuum at 40 ° C. and 20 mbar. The granulate is pressed with a pressure of 20 tons to cylindrical presses with 7 mm edge height and 74 mm diameter.
  • One tablet has a burning time of approx. 27 seconds.
  • the fog substance which is laboratoryized according to the invention attenuates the radiation in the infrared and visual very well (> 95%).
  • attenuation of approximately 20 dB is achieved in the respective frequency bands (35, 94, 140 and 220 GHz) in the millimeter wave range.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Botany (AREA)
  • Organic Chemistry (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Plant Pathology (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Air Bags (AREA)
  • Cosmetics (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Artificial Filaments (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Radiation-Therapy Devices (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

Composition nébuleuse pyrotechnique destinée à produire un aérosol impénétrable dans la plage spectrale visible, des infrarouges et des ondes millimétriques à des fins de camouflage et de leurre. Ladite composition est obtenue par réunion de dipôles conducteurs en forme de fibres ou de précurseurs de dipôles qui deviennent conducteurs in situ et de masses nébuleuses pyrotechniques traditionnelles efficaces dans la plage spectrale visible et des infrarouges pour former un aérosol commun.
EP00906220A 1999-03-27 2000-01-24 Composition nebuleuse pyrotechnique destinee a produire un aerosol impenetrable dans la plage spectrale visible, des infrarouges et des ondes millimetriques Expired - Lifetime EP1173395B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19914095A DE19914095A1 (de) 1999-03-27 1999-03-27 Pyrotechnischer Nebelsatz zur Erzeugung eines im sichtbaren, infraroten und im Millimeterwellen-Bereich undurchdringlichen Aerosols
DE19914095 1999-03-27
PCT/EP2000/000499 WO2000058238A1 (fr) 1999-03-27 2000-01-24 Composition nebuleuse pyrotechnique destinee a produire un aerosol impenetrable dans la plage spectrale visible, des infrarouges et des ondes millimetriques

Publications (2)

Publication Number Publication Date
EP1173395A1 true EP1173395A1 (fr) 2002-01-23
EP1173395B1 EP1173395B1 (fr) 2002-12-11

Family

ID=7902741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00906220A Expired - Lifetime EP1173395B1 (fr) 1999-03-27 2000-01-24 Composition nebuleuse pyrotechnique destinee a produire un aerosol impenetrable dans la plage spectrale visible, des infrarouges et des ondes millimetriques

Country Status (11)

Country Link
US (1) US6578492B1 (fr)
EP (1) EP1173395B1 (fr)
JP (1) JP2002540375A (fr)
AT (1) ATE229489T1 (fr)
DE (2) DE19914095A1 (fr)
DK (1) DK1173395T3 (fr)
ES (1) ES2188507T3 (fr)
IL (1) IL145113A0 (fr)
PT (1) PT1173395E (fr)
TR (1) TR200102720T2 (fr)
WO (1) WO2000058238A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10226507A1 (de) * 2002-06-14 2003-12-24 Diehl Munitionssysteme Gmbh Nebelwurfkörper
DE102004024857B4 (de) * 2004-05-19 2008-07-10 Diehl Bgt Defence Gmbh & Co. Kg Pyrotechnischer Satz
DE102004047231B4 (de) * 2004-09-28 2008-08-21 Rheinmetall Waffe Munition Gmbh Wirkkörper
DE102005020159B4 (de) * 2005-04-29 2007-10-04 Rheinmetall Waffe Munition Gmbh Tarn- und Täuschmunition zum Schutz von Objekten gegen Lenkflugkörper
US7343861B1 (en) 2005-05-31 2008-03-18 The United States Of America As Represented By The Secretary Of The Navy Device and method for producing an infrared emission at a given wavelength
US7710643B2 (en) 2007-01-31 2010-05-04 Alion Science And Technology Corporation Apparatus for and method of delivering visual image into air
US8750517B2 (en) * 2007-10-09 2014-06-10 The Trustees Of Columbia University In The City Of New York Friend or foe detection
DE102008060573B4 (de) * 2008-12-04 2016-08-11 Diehl Bgt Defence Gmbh & Co. Kg Pyrotechnische Wirkmasse zur Erzeugung eines Tarnnebels
RU2610792C1 (ru) * 2015-10-29 2017-02-15 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет геосистем и технологий" (СГУГиТ) Способ создания комбинированной низкотемпературной помехи для ложной цели или маскировочной завесы
US10088278B1 (en) * 2017-04-26 2018-10-02 The Boeing Company Electromagnetic pulse (EMP) generation
WO2019135079A1 (fr) 2018-01-05 2019-07-11 Bae Systems Plc Matériau de paillettes isolé, accordable et léger
GB201800653D0 (en) * 2018-01-05 2018-02-28 Bae Systems Plc Lightweight tuneable insulated chaff material
US10969207B1 (en) * 2020-03-04 2021-04-06 The Boeing Company Magnetically enhanced EMP generating device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725927A (en) 1962-12-27 1973-04-03 Us Air Force Disappearing-reappearing radar chaff and method for production
DE2819863A1 (de) 1978-03-14 1986-07-24 Buck Chemisch-Technische Werke Gmbh & Co, 8230 Bad Reichenhall Wurfkoerper
US5049883A (en) 1978-05-30 1991-09-17 The United States Of America As Represented By The Secretary Of The Navy Combined microwave and infrared chaff
DE3147850C2 (de) 1981-12-03 1984-06-14 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Breitband-Tarnnebel
DE3238455C2 (de) * 1982-10-16 1987-03-05 Pyrotechnische Fabrik F. Feistel GmbH + Co KG, 6719 Göllheim Nebelwurfkörper
US5686178A (en) 1989-12-11 1997-11-11 Advanced Technology Materials, Inc. Metal-coated substrate articles responsive to electromagnetic radiation, and method of making the same
US5445078A (en) * 1989-12-14 1995-08-29 Universal Propulsion Company, Inc. Apparatus and method for dispensing payloads
NO171750C (no) 1991-01-21 1993-04-28 Raufoss As Anordning ved roeykgranat
DE4337071C1 (de) * 1993-10-29 1995-03-02 Nico Pyrotechnik Pyrotechnischer Nebelsatz für Tarnzwecke und dessen Verwendung in einem Nebelkörper
US6047644A (en) * 1998-03-18 2000-04-11 The United States Of America As Represented By The Secretary Of The Army Propellant based aerosol generating device and method of use
US6283033B1 (en) * 1999-07-30 2001-09-04 Jake's Fireworks Multiple effect pyrotechnic shell
US6412416B1 (en) * 2001-03-19 2002-07-02 The United States Of America As Represented By The Secretary Of The Army Propellant-based aerosol generation devices and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0058238A1 *

Also Published As

Publication number Publication date
DK1173395T3 (da) 2003-03-10
PT1173395E (pt) 2003-04-30
DE50000928D1 (de) 2003-01-23
EP1173395B1 (fr) 2002-12-11
WO2000058238A1 (fr) 2000-10-05
TR200102720T2 (tr) 2002-04-22
ATE229489T1 (de) 2002-12-15
IL145113A0 (en) 2002-06-30
US6578492B1 (en) 2003-06-17
ES2188507T3 (es) 2003-07-01
DE19914095A1 (de) 2000-09-28
JP2002540375A (ja) 2002-11-26

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