EP0602481A1 - Leurre infrarouge ayant un spectie adapté - Google Patents

Leurre infrarouge ayant un spectie adapté Download PDF

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Publication number
EP0602481A1
EP0602481A1 EP93119567A EP93119567A EP0602481A1 EP 0602481 A1 EP0602481 A1 EP 0602481A1 EP 93119567 A EP93119567 A EP 93119567A EP 93119567 A EP93119567 A EP 93119567A EP 0602481 A1 EP0602481 A1 EP 0602481A1
Authority
EP
European Patent Office
Prior art keywords
active substance
air
target according
target
substances
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.)
Withdrawn
Application number
EP93119567A
Other languages
German (de)
English (en)
Inventor
Detlev Dr. Pade
Bernt Dr. Obkircher
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.)
Dornier GmbH
Original Assignee
Dornier 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 Dornier GmbH filed Critical Dornier GmbH
Publication of EP0602481A1 publication Critical patent/EP0602481A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J2/00—Reflecting targets, e.g. radar-reflector targets; Active targets transmitting electromagnetic or acoustic waves
    • F41J2/02—Active targets transmitting infrared radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
    • F41H9/06—Apparatus for generating artificial fog or smoke screens

Definitions

  • the invention relates to a spectrally adapted IR dummy target.
  • Infrared (IR) apparent targets are used to deflect guided missiles or ammunition that have an IR seeker head. If the protective object is only a moderately warm target, such as a boat, ship or land vehicle, then the spectral distribution of the IR emission of the apparent target must match that of the real target in order to protect against modern (SSN-2d, SSN -9, Rail) and future IR-guided missiles (Fk) with measures to suppress fake targets, since they measure the spectral distribution of an IR radiator point by point (two-color seeker) and can derive the temperature of the radiator from it. In this way it is possible for them to distinguish the moderately warm real target (0 - 30 ° C) from conventional false targets.
  • SSN-2d, SSN -9, Penguin modern
  • Fk future IR-guided missiles
  • the IR seeker can determine the beam strengths measured close the approximate temperature of the heater, and thus distinguish a pyrotechnically produced apparent target (very high temperature) from a real target (moderately warm).
  • the conventional false targets based on pyrotechnics are therefore ineffective against modern and future two-color search heads.
  • the object of the invention is to propose an IR illusion target that can be co-ordinated with a conventional or future radar illusion target, and that IR radiation of only moderately warm targets, such as Sea or land vehicles is spectrally adapted so that an IR seeker cannot distinguish between the apparent target and the real target from a distance, neither by the geometry of the apparent target nor by the spectral distribution of its IR radiation.
  • the apparent target effect results from the IR radiation of a powdery, heated active substance that hovers in the air over a large area.
  • the required IR radiation strength is achieved with only moderate heating of the active substance through its large radiating area.
  • the deflection effect is in turn given by the lateral distribution of the IR radiation of the active substance, the IR apparent target beginning within the dimensions of the real target and its radiance increasing with increasing distance from the real target.
  • the active substance is blown out continuously or intermittently in a prepared form from the object to be protected.
  • the components of the active substance Upon contact with atmospheric, moist air, the components of the active substance accumulate on the water in the moist air, or react in the moist environment with one another or with the water present in such a way that the enthalpy of adsorption, reaction or hydration in the form of heat and Heat radiation is released.
  • the time course and the degree of heating can be determined such that the resulting cloud of the active substance according to the application rate and the total amount spent, the lateral and spectral distributions and radiation power desired for an IR apparent target which provides IR radiation.
  • the parameters of the active substance and its application are adapted accordingly.
  • non-metal oxides such as phosphorus oxides
  • metal oxides alkali and alkaline earth oxides and peroxides, such as Al203, CaO, Na202
  • anhydrous salts or salts with a low hydration level e.g. alkaline earths, especially CaCl2
  • a low hydration level e.g. alkaline earths, especially CaCl2
  • the speed of water absorption and thus the time course of the heating of the active substance is important for the application.
  • the heating and the subsequent cooling should proceed as slowly as possible, in the range of several seconds.
  • the rapid increase in the heating of a component can be dampened by admixing a suitable other component with different time behavior.
  • the time profile can be set so that a maximum of heating is achieved after a certain time and the active substance then cools down very slowly.
  • a combination of the active substances is advantageous for the application in such a way that two or more components are mixed into the atmosphere in a dry mixture and react with one another exothermically after the reaction with the moist air, with a time delay.
  • the application of the invention to match the components of the active substance to one another in such a way that the active substance as a whole behaves in an environmentally neutral manner after reaction with the environment (air, water, soil).
  • the exhaust gas containing high amounts of water vapor as an atmospheric carrier for the powder of the active substance in boats / ships, for example by blowing out the active substance within the normal exhaust plume, or by letting the warm exhaust gas or a part thereof into the atmosphere at the point where the powder emerges or in the vicinity thereof.
  • the individual components of the active substance are produced or dried using known methods at elevated temperature and / or reduced pressure.
  • the dry individual components are mixed in a dry environment with the exclusion of air.
  • the dry and ready-mixed active substance is poured into suitable containers and stored in the absence of air.
  • the dowels are e.g. To protect a sea vehicle from this vehicle continuously blown into the atmosphere, it is advisable to bring the IR active substance into the atmosphere together with the chaff in the same way so that the apparent target remains linked to the real target.
  • IR active mass and dowel can be fed into the common blowpipe and blown out, or the IR active mass is taken parallel to the dowel to the blow-out location, only to be there with the dowel and, if necessary, with a water mist or a substance for local elevation the humidity to mix.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP93119567A 1992-12-17 1993-12-04 Leurre infrarouge ayant un spectie adapté Withdrawn EP0602481A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4242729 1992-12-17
DE19924242729 DE4242729C2 (de) 1992-12-17 1992-12-17 Scheinziel

Publications (1)

Publication Number Publication Date
EP0602481A1 true EP0602481A1 (fr) 1994-06-22

Family

ID=6475619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93119567A Withdrawn EP0602481A1 (fr) 1992-12-17 1993-12-04 Leurre infrarouge ayant un spectie adapté

Country Status (2)

Country Link
EP (1) EP0602481A1 (fr)
DE (1) DE4242729C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1588996A3 (fr) * 2004-04-19 2012-10-03 Diehl BGT Defence GmbH & Co.KG Process and apparatus for producing an infrared-surface irradiator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4444670B4 (de) * 1994-12-15 2006-06-14 Eads Deutschland Gmbh Marinescheinziel
FR2840977B1 (fr) 2002-06-12 2004-09-03 Giat Ind Sa Dispositif et munition de protection d'un vehicule ou d'une plate-forme fixe contre une menace

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607780A (en) * 1968-10-28 1971-09-21 Forrest G Scott Nonlethal thermal-aerosol generator weapon
FR2307778A1 (fr) * 1975-04-18 1976-11-12 Serat Charge fumigene
EP0020217A1 (fr) * 1979-05-23 1980-12-10 Thomson-Brandt Armements Procédé d'opacification d'un milieu gazeux dans les bandes optiques et infrarouges du spectre électromagnétique
EP0037515A2 (fr) * 1980-03-29 1981-10-14 Pyrotechnische Fabrik F. Feistel GmbH + Co KG Nuage de fumée composite
DE2911639A1 (de) * 1979-03-24 1982-12-02 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zur erzeugung von aerosolwolken
US4372085A (en) * 1978-12-22 1983-02-08 Liebherr-Verzahntechnik Gmbh Apparatus for form-grinding the tooth-flanks of a cylindrical gearwheel
FR2573858A1 (fr) * 1982-06-03 1986-05-30 Lacroix E Tous Artifices Procede et dispositif de masquage par materiau fumigene d'une cible telle qu'un char
DE3714454A1 (de) * 1987-04-30 1988-12-01 Dynamit Nobel Ag Nebelplattform fuer zwei-komponentennebel
JPH0460399A (ja) * 1990-06-28 1992-02-26 Nissan Motor Co Ltd 赤外線擬似装置用の組成物
EP0512202A2 (fr) * 1991-05-10 1992-11-11 Buck Werke GmbH & Co Procédé pour protéger un objet émettant un rayonnement infrarouge et projectile pour la mise en oeuvre d'un tel procédé

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930936C1 (de) * 1979-07-31 1985-07-25 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Scheinziel zur Taeuschung von Radar- und Infrarotsuchgeraeten
DE3022460A1 (de) * 1980-06-14 1981-12-24 Precitronic Gesellschaft für Feinmechanik und Electronic mbH, 2000 Hamburg Verfahren und vorrichtung zum ausbringen von in luft schwebenden tarnmitteln mittels traegerprojektilen
DE4007811C2 (de) * 1990-03-12 1994-05-19 Dornier Gmbh Infrarot-Scheinziel

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607780A (en) * 1968-10-28 1971-09-21 Forrest G Scott Nonlethal thermal-aerosol generator weapon
FR2307778A1 (fr) * 1975-04-18 1976-11-12 Serat Charge fumigene
US4372085A (en) * 1978-12-22 1983-02-08 Liebherr-Verzahntechnik Gmbh Apparatus for form-grinding the tooth-flanks of a cylindrical gearwheel
DE2911639A1 (de) * 1979-03-24 1982-12-02 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zur erzeugung von aerosolwolken
EP0020217A1 (fr) * 1979-05-23 1980-12-10 Thomson-Brandt Armements Procédé d'opacification d'un milieu gazeux dans les bandes optiques et infrarouges du spectre électromagnétique
EP0037515A2 (fr) * 1980-03-29 1981-10-14 Pyrotechnische Fabrik F. Feistel GmbH + Co KG Nuage de fumée composite
FR2573858A1 (fr) * 1982-06-03 1986-05-30 Lacroix E Tous Artifices Procede et dispositif de masquage par materiau fumigene d'une cible telle qu'un char
DE3714454A1 (de) * 1987-04-30 1988-12-01 Dynamit Nobel Ag Nebelplattform fuer zwei-komponentennebel
JPH0460399A (ja) * 1990-06-28 1992-02-26 Nissan Motor Co Ltd 赤外線擬似装置用の組成物
EP0512202A2 (fr) * 1991-05-10 1992-11-11 Buck Werke GmbH & Co Procédé pour protéger un objet émettant un rayonnement infrarouge et projectile pour la mise en oeuvre d'un tel procédé

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 8433, Derwent World Patents Index; AN 84-205370 *
DATABASE WPI Week 9215, Derwent World Patents Index; AN 92-118561 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1588996A3 (fr) * 2004-04-19 2012-10-03 Diehl BGT Defence GmbH & Co.KG Process and apparatus for producing an infrared-surface irradiator

Also Published As

Publication number Publication date
DE4242729C2 (de) 1995-10-05
DE4242729A1 (de) 1994-06-30

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