EP0340761A2 - Charges propulsives pour projectiles de gros calibre - Google Patents

Charges propulsives pour projectiles de gros calibre Download PDF

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Publication number
EP0340761A2
EP0340761A2 EP89108044A EP89108044A EP0340761A2 EP 0340761 A2 EP0340761 A2 EP 0340761A2 EP 89108044 A EP89108044 A EP 89108044A EP 89108044 A EP89108044 A EP 89108044A EP 0340761 A2 EP0340761 A2 EP 0340761A2
Authority
EP
European Patent Office
Prior art keywords
propellant charge
propellant
powder
grains
central bore
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
EP89108044A
Other languages
German (de)
English (en)
Other versions
EP0340761A3 (en
EP0340761B1 (fr
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
Family has litigation
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(A2) "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.
  • the task was therefore to find a propellant charge for large-caliber ammunition that burns completely, including its cartridge, and has high mechanical strength.
  • the load to be found should also offer the possibility of integrating a central lighting system and having interior ballistic parameters that enable it to be used as a propellant for large-caliber bullets of various types.
  • a propellant charge for large-caliber projectiles made from propellant powder grains has now been found, which is identified as shaped bodies made of the powder grains which are connected to one another by organic polymers in amounts of between 0.2 and 10% by weight, based on the shaped body.
  • Suitable organic polymers are those polymers which have adhesive properties, harden to solid products and are not attacked in contact with propellant grains. 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 is easy to determine whether the polymer has the desired properties. Examples of polymers that can be used are the polyurethanes, polyolefins and polyvinyl that harden to solid products compounds such as polyvinyl acetate or polyvinyl nitrate. Copolymers can also be used, such as, for example, 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 modify the burnup data of the propellant charge in a desired direction by means of the amount of the polymer.
  • 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 any; 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 o C during the foaming process.
  • 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 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, in addition to the central bore mentioned for firing, further through bores parallel to the central bore.
  • This embodiment is also preferably suitable for the case in which 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.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Health & Medical Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Indole Compounds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Medicinal Preparation (AREA)
  • Cosmetics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Polyurethanes Or Polyureas (AREA)
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 true EP0340761A2 (fr) 1989-11-08
EP0340761A3 EP0340761A3 (en) 1990-09-12
EP0340761B1 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)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU672009B2 (en) * 1992-06-19 1996-09-19 Thyssen Guss Ag Process for producing a protective coating on metal walls subject to attack by hot gases, especially flue gases
EP0794164A1 (fr) * 1996-03-06 1997-09-10 Oea, Inc. Gonfleur pour système de retenue de sécurité gonflable, dégageant aucune fumée et particule
FR2781878A1 (fr) * 1998-07-31 2000-02-04 Giat Ind Sa Procede de mise en oeuvre d'une substance pyrotechnique et initiateur pyrotechnique obtenu avec un tel procede
US6120626A (en) * 1998-10-23 2000-09-19 Autoliv Asp Inc. Dispensing fibrous cellulose material
US6176517B1 (en) 1998-10-23 2001-01-23 Autoliv Aspinc. Gas generating apparatus
US6334917B1 (en) 1998-10-23 2002-01-01 Autoliv Asp, Inc. Propellant compositions for gas generating apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59208344D1 (de) 1991-02-15 1997-05-22 Dynamit Nobel Ag Treibladungsmodul
DE19546582C2 (de) 1995-12-13 1998-07-30 Wolfhart Fritze Manöverpatrone
DE102010045383B4 (de) 2010-09-14 2014-01-16 Diehl Bgt Defence Gmbh & Co. Kg Treibladungskörper

Citations (7)

* 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
FR2290409A1 (fr) * 1974-10-11 1976-06-04 Hercules Inc Composition propulsive contenant des fibres de graphite pour augmenter la vitesse de combustion
FR2418781A1 (fr) * 1978-03-03 1979-09-28 Saint Louis Inst Masses de charges propulsives pour armes a tube
EP0005112A1 (fr) * 1978-04-13 1979-10-31 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Chargement propulsif de munitions et procédé de remplissage de douilles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688697A (en) * 1969-07-31 1972-09-05 Aerojet General Co Solid grain caseless ammunition propellant
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

Patent Citations (7)

* 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
FR2290409A1 (fr) * 1974-10-11 1976-06-04 Hercules Inc Composition propulsive contenant des fibres de graphite pour augmenter la vitesse de combustion
FR2418781A1 (fr) * 1978-03-03 1979-09-28 Saint Louis Inst Masses de charges propulsives pour armes a tube
EP0005112A1 (fr) * 1978-04-13 1979-10-31 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Chargement propulsif de munitions et procédé de remplissage de douilles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
T.C. OHART: "Elements of Ammunition, 1946, Seiten 21-24, John Wiley & Sons, Inc., New York, US; "Propellants" *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU672009B2 (en) * 1992-06-19 1996-09-19 Thyssen Guss Ag Process for producing a protective coating on metal walls subject to attack by hot gases, especially flue gases
EP0794164A1 (fr) * 1996-03-06 1997-09-10 Oea, Inc. Gonfleur pour système de retenue de sécurité gonflable, dégageant aucune fumée et particule
US5868424A (en) * 1996-03-06 1999-02-09 Oea, Inc. Substantially smoke-free and particulate-free inflator for inflatable safety restraint system
FR2781878A1 (fr) * 1998-07-31 2000-02-04 Giat Ind Sa Procede de mise en oeuvre d'une substance pyrotechnique et initiateur pyrotechnique obtenu avec un tel procede
WO2000008412A1 (fr) * 1998-07-31 2000-02-17 Giat Industries Procede de mise en oeuvre d'une substance pyrotechnique et initiateur pyrotechnique obtenu avec un tel procede
US6120626A (en) * 1998-10-23 2000-09-19 Autoliv Asp Inc. Dispensing fibrous cellulose material
US6176517B1 (en) 1998-10-23 2001-01-23 Autoliv Aspinc. Gas generating apparatus
US6334917B1 (en) 1998-10-23 2002-01-01 Autoliv Asp, Inc. Propellant compositions for gas generating apparatus

Also Published As

Publication number Publication date
ES2049273T3 (es) 1994-04-16
EP0340761A3 (en) 1990-09-12
DE3815436A1 (de) 1989-11-16
EP0340761B1 (fr) 1994-01-05
NO891755L (no) 1989-11-07
DE58906615D1 (de) 1994-02-17
NO891755D0 (no) 1989-04-27
ATE99795T1 (de) 1994-01-15

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