EP0018956B1 - Camouflage et méthode pour obtenir un tel camouflage - Google Patents

Camouflage et méthode pour obtenir un tel camouflage Download PDF

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Publication number
EP0018956B1
EP0018956B1 EP19800850057 EP80850057A EP0018956B1 EP 0018956 B1 EP0018956 B1 EP 0018956B1 EP 19800850057 EP19800850057 EP 19800850057 EP 80850057 A EP80850057 A EP 80850057A EP 0018956 B1 EP0018956 B1 EP 0018956B1
Authority
EP
European Patent Office
Prior art keywords
camouflage
foam
mines
vehicle
water
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.)
Expired
Application number
EP19800850057
Other languages
German (de)
English (en)
Other versions
EP0018956A1 (fr
Inventor
Folke Ivar Blomberg
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.)
Foerenade Fabriksverken AB
Original Assignee
Foerenade Fabriksverken AB
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 Foerenade Fabriksverken AB filed Critical Foerenade Fabriksverken AB
Publication of EP0018956A1 publication Critical patent/EP0018956A1/fr
Application granted granted Critical
Publication of EP0018956B1 publication Critical patent/EP0018956B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F41H3/00—Camouflage, i.e. means or methods for concealment or disguise

Definitions

  • the present invention relates to a camouflage having attenuating properties within the infrared and the microwave range in order to mask primarily military objects.
  • object as used herein, is meant installations, e.g. airfields, as well as equipment and personnel.
  • the invention is also concerned with a method at the generation of such a camouflage.
  • camouflage In order to camouflage an object, it is usually painted, covered with nets and the like or placed towards a suitable background. Characteristic of such camouflage is that its is effective mainly within the visible wave-length ranges. Within the infrared range and the microwave range, where a lot of search equipment and homing active parts are working, other camouflage methods are required.
  • plastic-based foams absorb infrared or heat radiation (US-A-4 174 480) and electromagnetic waves (US-A-4 050 073). From US-A-4 142 015 and DE-A-2 345 607 it is also known that plastic-based foams can be used for camouflage purposes within the infrared range.
  • the present invention relates to water-based foams that have proved to be very suitable for camouflage purposes, being absorbent both within the infrared and the microwave ranges.
  • the water-based foam is especially suitable for the camouflage of vehicles etc., as the water-based foam can easily be washed away. Hence, there is no risk for damaging and disabling of the vehicle, e.g. by blocking movable parts or sealing the air supply of the engine or hindering the use of optical devices as may be the case when plastic foams are used.
  • camouflage of the present invention may primarily, but not exclusively, be used for the following applications:
  • the camouflage consists of a water-based foam having an expansion ratio greater than or equal to 1 000.
  • the water-based foam may be an ordinary fire extinguishing foam, which is obtained in a way known per se by mixing water with a foaming agent which when being sprayed is added air with a foam production as the result.
  • the foam may comprise stabilizers and corrosion inhibitants.
  • the foam also comprises colouring agents usual for masking purposes.
  • foaming agents known for foam extinguishing purposes may be mentioned ammoniumlauryl ethersulfate, diethyl- glykol monobutylether and lauryl alcohol.
  • stabilizers there may be used in a conventional way gelatine, sodium carboxymethyl cellulose, polyethylene imine, starch phosphate, glycerol, sorbitol, fatty acid monoethanol amides, fatty acid amides, N-alkylimino diacetates or sulfo- betaine.
  • corrosion inhibitants are carbamates, tetrasodium pyrophosphate and sodium benzoate.
  • the water-based foam may be used together with a plastic-based foam, suitably having an expansion ratio greater than or equal to 100.
  • the plastic-based foam may consist of a cellular plastic, e.g. cellular urethane plastic, cellular phenol plastic or cellular carbamide plastic, produced in the conventional way. After mixing the components together and spreading of the foam obtained, the curing action may be performed in place.
  • the cellular plastic structure is obtained by vaporization of the blowing (expanding) agent being part of the reaction mixture or by air being blown into the reaction mixture.
  • Vehicles primarily combat vehicles, are usually pattern painted for masking purposes in order to be protected from direct view.
  • the pattern painting may be completed with bunches of twigs and the like being fixed to the vehicle.
  • the camouflage is completed with camouflage nets being tightened across and around the vehicle.
  • the foam In order to camouflage a combat vehicle from the air or in order to protect it from view from the ground the horizon around, it is necessary that the foam is put around the whole vehicle. Vertically the foam should cover the sides of the chassis and the upper parts of the front armour and the back armour. The barrel and prisms and sight equipment should be free from foam.
  • the foam could be put in a sector in front of the vehicle.
  • a water-based foam can be used. With an expansion ratio of about 1 000, it is required about 100 litres of water, 100 m 3 air and about 1 litre of foaming agent in order to achieve a camouflage all around the vehicle.
  • a conventional foam blowing device having a number of muzzles.
  • the number is adapted in order that the foam will be produced as quickly as possible and that an acceptable continuous camouflage will be obtained.
  • the foam must be non-toxic as there is a risk of getting foam inside the vehicle.
  • Camouflage of Mines The camouflage of the invention is particularly suitable for masking antitank mines, something that has been difficult up to now and has required large resources.
  • the mines are buried by hand or are put into the ground by means of minelayers. Then the mines are being camouflaged by putting back on top of the mines, those pieces of turf that were loosened at the minelaying.
  • a camouflage is obtained by spreading a thin layer of gravel on the roadway, which layer is joined together using a slurry of asphalt or cement.
  • the clearance of mines is carried out by hand, by blasting or shooting or by means of a mine roller. Mine clearance by blasting or shooting must most often be completed with a removal of mines by hand. Removal by hand and even blasting does require that the individual mine is first being located.
  • camouflage of antitank mines requires that a plastic-based foam is being used because of the long time such a camouflage must be able to stay.
  • the height should be about 0.5 cm in order to cover the mines and to make the mine clearance more difficult.
  • a mining that is laid on a road or buried into the roadway will have to be covered with foam over the entire width of the roadway.
  • camouflage according to the invention can be favourably used:
  • Airfields are important objects in case of war.
  • the aggressor wishes to get hold of them undamaged in order to quickly supply tropps and necessaries. Airfields that are not used are consequently barred (and defended) while airfields that are used by our air force, are being defended. Airfields that an aggressor does not intend to use will be combated by him in order to obstruct our air force. Said fields may be barred or used by our air force.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Road Paving Structures (AREA)

Claims (4)

1. Camouflage présentant des propriétés d'atténuation dans la gamme des infra-rouges et des microondes pour dissimuler principalement des objectifs militaires, caractérisé en ce que ce camouflage est constitué d'une mousse à base d'eau ayant un rapport d'expansion supérieur ou égal à 1000.
2. Camouflage selon la revendication 1, caractérisé en ce que cette mousse à base d'eau est utilisée en même temps qu'une mousse à base de plastique ayant un rapport d'expansion supérieur ou égal à 100.
3. Camouflage selon la revendication 1, caractérisé en ce que la mousse comporte un ou plusieurs agents colorés pour un masquage prédéterminé.
4. Méthode de production d'un camouflage selon l'une des revendications précédentes, caractérisé en ce que cette production est effectuée dans un véhicule et en ce que l'air de refroidissement du moteur de véhicule est utilisé pour expanser la mousse.
EP19800850057 1979-04-30 1980-04-18 Camouflage et méthode pour obtenir un tel camouflage Expired EP0018956B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7903790 1979-04-30
SE7903790 1979-04-30

Publications (2)

Publication Number Publication Date
EP0018956A1 EP0018956A1 (fr) 1980-11-12
EP0018956B1 true EP0018956B1 (fr) 1984-03-21

Family

ID=20337939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800850057 Expired EP0018956B1 (fr) 1979-04-30 1980-04-18 Camouflage et méthode pour obtenir un tel camouflage

Country Status (2)

Country Link
EP (1) EP0018956B1 (fr)
DE (1) DE3067094D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521715A1 (en) * 1982-02-16 1983-08-19 Alsetex Foam layer camouflage of objects which emit infrared radiation - contains particles of graphite etc. and colouring matter
SE459885B (sv) * 1985-02-22 1989-08-14 Affarsverket Ffv Fordonsburet system foer maskering med skum
FR2646502B1 (fr) * 1989-04-28 1994-02-18 Lacroix Tous Artifices Sa Dispositif de camouflage d'une mine marine face a un sonar de chasse aux mines
WO2000013965A2 (fr) * 1998-08-15 2000-03-16 Delta Thermal Systems, Inc. Reduction de la visibilite infrarouge d'objets
CN1531570A (zh) 2000-12-08 2004-09-22 Sa 电磁能适应材料
CN110802781B (zh) * 2019-09-27 2021-05-28 浙江瑞堂塑料科技股份有限公司 一种隐身水雷壳体及其制备方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB565238A (en) * 1941-05-31 1944-11-02 Sternson Lab Ltd Process of and means for coating buildings and other objects, for the purpose of camouflage
FR1131158A (fr) * 1954-05-13 1957-02-18 Pyrene Co Ltd Perfectionnements apportés aux appareils pour la production de mousse
DE1916326A1 (de) * 1968-04-01 1969-10-30 Barracudaverken Ab Tarnungsmittel zum Verhindern oder Hemmen der Entdeckung durch Radarerkundung
DE2252431A1 (de) * 1972-10-26 1974-05-02 Pusch Guenter Waerme-tarnmatte
DE2345607C2 (de) * 1973-09-10 1984-02-02 Hein, Lehmann AG, 4000 Düsseldorf Beschichtungsmaterial zur radarsicheren Tarnung und/oder zur Sicherung der Radarortung und Verfahren zu dessen Herstellung
US4142015A (en) * 1977-05-04 1979-02-27 The United States Of America As Represented By The Secretary Of The Army Thermal camouflage
SE418495B (sv) * 1978-03-31 1981-06-09 Lennart Holm Anvendning av partiklar av aktivt kol i aerosoler avsedda for stralningsabsorption serskilt inom ir-omradet

Also Published As

Publication number Publication date
EP0018956A1 (fr) 1980-11-12
DE3067094D1 (en) 1984-04-26

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