EP0340761B1 - Charges propulsives pour projectiles de gros calibre - Google Patents

Charges propulsives pour projectiles de gros calibre Download PDF

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Publication number
EP0340761B1
EP0340761B1 EP89108044A EP89108044A EP0340761B1 EP 0340761 B1 EP0340761 B1 EP 0340761B1 EP 89108044 A EP89108044 A EP 89108044A EP 89108044 A EP89108044 A EP 89108044A EP 0340761 B1 EP0340761 B1 EP 0340761B1
Authority
EP
European Patent Office
Prior art keywords
propellant
propellent charge
powder
charges
cylinder
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 - Lifetime
Application number
EP89108044A
Other languages
German (de)
English (en)
Other versions
EP0340761A2 (fr
EP0340761A3 (en
Inventor
Johannes Eich
Johan Dr. Kobes
Harmen Last
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.)
Dynamit Nobel AG
Muiden Chemie International BV
Original Assignee
Dynamit Nobel AG
Muiden Chemie International BV
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6353764&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0340761(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dynamit Nobel AG, Muiden Chemie International BV filed Critical Dynamit Nobel AG
Priority to AT89108044T priority Critical patent/ATE99795T1/de
Publication of EP0340761A2 publication Critical patent/EP0340761A2/fr
Publication of EP0340761A3 publication Critical patent/EP0340761A3/de
Application granted granted Critical
Publication of EP0340761B1 publication Critical patent/EP0340761B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/38—Separately-loaded propellant charges, e.g. cartridge bags
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/04—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
    • C06B45/06—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
    • C06B45/10—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/16—Cartridges, i.e. cases with charge and missile characterised by composition or physical dimensions or form of propellant charge, with or without projectile, or powder

Definitions

  • the present invention relates to propellant charges for large-caliber projectiles which contain propellant powder grains as a powder component.
  • FR-A-2 418 781 describes compact, dense powder elements made of secondary explosive crystals and polymers.
  • the polymer must direct and stabilize the burning of the high-energy explosive so that no deflagration or detonation occurs. It is therefore an indispensable, desensitizing component of the propellant powder.
  • EP-A-0 005 112 describes propellant charges of particularly high charge density.
  • the high loading density is achieved by packing at least two, preferably three powder components of different dimensions as densely as possible. To fix this state, binders are added that can also react with the powder components. The change in the powder surface caused thereby leads to an improvement in strength and the desired high charge density, but on the other hand to a desensitization and thus to poor ignition properties of the propellant charge.
  • the task was therefore to find a propellant charge for large-caliber ammunition that burns completely, including its cartridge, and has a high mechanical strength.
  • the load to be found should also offer the possibility of integrating a central lighting system and internal ballistic parameters that enable it to be used as a propellant for large-caliber bullets of various types.
  • Suitable organic polymers are those polymers which have adhesive properties, harden to solid products and are not attacked in contact with propellant particles. They must be resistant to the plasticizers and other additives such as stabilizers or combustion moderators present in the powder grains. On the other hand, they must not contain any plasticizers, solvents or other additives that attack the powder grains. Polymers that have these properties are generally known. In preliminary tests it can easily be determined whether the polymer has the desired properties. Examples of polymers that can be used are the polyurethanes, polyolefins and polyvinyl compounds that harden to solid products such as polyvinyl acetate or polyvinyl nitrate. Copolymers can also be used, such as acrylonitrile-butadiene-styrene copolymers.
  • the polymers are preferably in foamed form as rigid foam.
  • the foam should be as large as possible, so that it has a density between 15 and 20 kg / m3.
  • the preferred foams are polyurethane foams and polyethylene foams.
  • the former are used particularly with single-base propellant powders, the latter with multi-base propellant powders.
  • the amount of the polymers used is at most 10% by weight, based on the molding.
  • the minimum amount depends on the binding properties of the respective polymer and the desired burn-up data of the propellant charge. It is therefore possible to use the amount of polymer to modify the burnup data of the propellant charge in a desired direction.
  • the upper limit of the polymer can be higher than when using non-foamed polymers; the latter are contained in the claimed propellant charges preferably in amounts between 0.2 and 5% by weight. If the polymers are in foamed form, they are generally between 1.5 and 8% by weight, preferably between 2.0 and 5% by weight, based on the charge.
  • the propellant powder grains which are connected by the organic polymer are propellant powder grains known per se which are used as propellant charges for large-caliber projectiles. They can exist as a basic or multi-basic powder grains. The geometric shape can also be arbitrary; it depends on the desired burning characteristics and the intended use of the finished loads. You can consequently z. B. as tube powder, multi-hole powder, flake powder or tube powder and mixtures of these are present.
  • the individual propellant grains are distributed homogeneously in the claimed molded body.
  • the position and orientation of the individual grains with each other is irrelevant.
  • the polymer need not fill the entire space between the grains; voids may remain between the grains.
  • Such a form of implementation is even preferred and can be achieved in that the individual grains are coated in a first step with the not yet cured polymer and poured onto a desired shape in which the polymer is cured without pressure.
  • the preparation is expediently carried out by pouring the propellant particles in the desired form onto a layer of the polymer which has not yet been foamed and then allowing the polymer to foam into the bulk powder.
  • the temperature of the polymer must not exceed 100 ° C.
  • the foam then penetrates evenly through the remaining gaps of the bulk powder during foaming and connects the individual grains to one another to form a solid, dimensionally stable charge. This charge then burns off like a pure bulk charge and leaves no residue.
  • the claimed moldings preferably have a cylindrical shape. Furthermore, they can have a central bore in the cylinder axis. In this form, they are suitable as modules in a propellant charge system for large-caliber ones Bullets that are ignited with a central lighting system. These modules can be used directly and do not require a cartridge or sleeve made of combustible material. The length of the cylinders then corresponds to the length of the desired modules.
  • the shaped bodies can also be used as support rings in known combustible propellant charge containers made of combustible material in order to give these containers better dimensional stability.
  • a support ring can also form the end of such a known propellant charge container; in this case a central drilling is not necessary.
  • the cylindrical or cylindrical shaped bodies can furthermore have further through-bores parallel to the central borehole in addition to the central bore for firing.
  • This form of implementation is also preferably suitable in the event that the shaped bodies are used as support rings.
  • the diameter of a central bore in a cylindrical shaped body can be up to 30% of the diameter of the cylinder. Further through holes parallel to the axis can have diameters up to this size; however, in those cases where an inventive propellant ring has three or more through bores, the cross sectional area of the through bores should not be more than half the cross sectional area of the cylinder.
  • FIG. 1 is a perspective view of a cylinder according to the invention, which was produced by foaming 150 g of liquid, foamable polyurethane into a bed of 3,000 g of propellant charge powder particles (multi-hole powder) in a tube with a diameter of 157 mm.
  • the propellant particles 1 are firmly embedded in the foam 2 after its foaming and curing.
  • the height of the cylindrical propellant charge obtained was 185 mm.
  • Figure 2 shows a cylinder, which was produced in the same way as that of Figure 1, partially cut away. It also contains a central bore 3, which was obtained in that a cylinder with the diameter of the bore 3 was arranged centrally in the tube into which the polyurethane and the powder grains were introduced, which was removed after the foam had cured.
  • This body contains propellant powder grains of different geometries.

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Molecular Biology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Indole Compounds (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Medicinal Preparation (AREA)
  • Cosmetics (AREA)

Claims (6)

  1. Charge propulsive pour projectiles de gros calibre dans laquelle les éléments de poudre de la charge propulsive sont liés par des polymères organiques pour former un corps moulé, caractérisé par le fait que l'on utilise comme polymère organique un polymère expansible qui, sous sa forme expansée est présent comme mousse duroplastique dans le corps moulé, en des quantités comprises entre 0,2 et 10% en poids, rapporté au corps moulé.
  2. Charge propulsive selon la revendication 1, caractérisée par le fait que la mousse est une mousse de polyuréthane.
  3. Elément de charge propulsive selon l'une des revendications précédentes, caractérisé par le fait qu'il se présente sous la forme d'un cylindre.
  4. Elément de charge propulsive selon la revendication 3, caractérisé par le fait qu'il comporte un trou central concentrique à l'axe du cylindre, dont le diamètre représente jusqu'à 30% du diamètre du cylindre.
  5. Elément de charge propulsive selon selon l'une des revendications précédentes, caractérisé par le fait qu'il comporte en plus d'un trou central, des trous qui sont parallèles audit trou central.
  6. Utilisation d'éléments de charge propulsive selon la revendication 5 comme anneaux-supports dans des étuis de cartouches pour de la poudre de charge propulsive.
EP89108044A 1988-05-06 1989-05-03 Charges propulsives pour projectiles de gros calibre Expired - Lifetime EP0340761B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89108044T ATE99795T1 (de) 1988-05-06 1989-05-03 Treibladungen fuer grosskalibrige geschosse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3815436A DE3815436A1 (de) 1988-05-06 1988-05-06 Treibladungen fuer grosskalibrige geschosse
DE3815436 1988-05-06

Publications (3)

Publication Number Publication Date
EP0340761A2 EP0340761A2 (fr) 1989-11-08
EP0340761A3 EP0340761A3 (en) 1990-09-12
EP0340761B1 true EP0340761B1 (fr) 1994-01-05

Family

ID=6353764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108044A Expired - Lifetime EP0340761B1 (fr) 1988-05-06 1989-05-03 Charges propulsives pour projectiles de gros calibre

Country Status (5)

Country Link
EP (1) EP0340761B1 (fr)
AT (1) ATE99795T1 (fr)
DE (2) DE3815436A1 (fr)
ES (1) ES2049273T3 (fr)
NO (1) NO891755L (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4204318A1 (de) 1991-02-15 1992-08-20 Dynamit Nobel Ag Treibladungsmodul
DE4220063C1 (de) * 1992-06-19 1993-11-18 Thyssen Guss Ag Verfahren zur Herstellung einer Schutzschicht auf mit heißen Gasen, insbesondere Rauchgasen beaufschlagten metallischen Wänden
DE19546582C2 (de) * 1995-12-13 1998-07-30 Wolfhart Fritze Manöverpatrone
US5868424A (en) * 1996-03-06 1999-02-09 Oea, Inc. Substantially smoke-free and particulate-free inflator for inflatable safety restraint system
FR2781878B1 (fr) * 1998-07-31 2001-02-16 Giat Ind Sa Procede de mise en oeuvre d'une substance pyrotechnique et initiateur pyrotechnique obtenu avec un tel procede
US6176517B1 (en) 1998-10-23 2001-01-23 Autoliv Aspinc. Gas generating apparatus
US6120626A (en) * 1998-10-23 2000-09-19 Autoliv Asp Inc. Dispensing fibrous cellulose material
US6334917B1 (en) 1998-10-23 2002-01-01 Autoliv Asp, Inc. Propellant compositions for gas generating apparatus
DE102010045383B4 (de) * 2010-09-14 2014-01-16 Diehl Bgt Defence Gmbh & Co. Kg Treibladungskörper

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB513633A (en) * 1937-03-04 1939-10-18 American Cyanamid Co Improvements in or relating to explosives
GB534900A (en) * 1939-08-17 1941-03-21 American Cyanamid Co Improvements in or relating to explosives
US3049454A (en) * 1955-08-15 1962-08-14 Howard J Stark Low density cellular explosive foam
DE1214584B (de) * 1962-10-02 1966-04-14 Kalk Chemische Fabrik Gmbh Rieselfaehige Spreng- und/oder Treibsatz-mischungen auf der Basis von anorganischen und/oder organischen Explosivstoffen
US3688697A (en) * 1969-07-31 1972-09-05 Aerojet General Co Solid grain caseless ammunition propellant
DE2448615C3 (de) * 1974-10-11 1981-04-02 Hercules Inc., 19899 Wilmington, Del. Feste Treibmittel und ihre Verwendung
DE2809279C3 (de) * 1978-03-03 1980-11-27 Deutsch-Franzoesisches Forschungsinstitut Saint-Louis, Saint-Louis (Frankreich) Treibladungsmassen für Rohrwaffen
FR2422925A1 (fr) * 1978-04-13 1979-11-09 France Etat Chargement propulsif de munitions
DE2843477A1 (de) * 1978-10-05 1980-04-17 Dynamit Nobel Ag Huelsenlose treibmittelkoerper
DE3242106C1 (de) * 1982-11-13 1984-06-14 Diehl GmbH & Co, 8500 Nürnberg Treibladungsmassen für Rohrwaffen

Also Published As

Publication number Publication date
NO891755L (no) 1989-11-07
EP0340761A2 (fr) 1989-11-08
DE58906615D1 (de) 1994-02-17
ES2049273T3 (es) 1994-04-16
DE3815436A1 (de) 1989-11-16
EP0340761A3 (en) 1990-09-12
NO891755D0 (no) 1989-04-27
ATE99795T1 (de) 1994-01-15

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