EP1098163A2 - Verfahren und Verpackung zur Reduktion der Ausbreitung einer Explosion in einem Magazin, das Hohlladungen enthält - Google Patents

Verfahren und Verpackung zur Reduktion der Ausbreitung einer Explosion in einem Magazin, das Hohlladungen enthält Download PDF

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Publication number
EP1098163A2
EP1098163A2 EP00850175A EP00850175A EP1098163A2 EP 1098163 A2 EP1098163 A2 EP 1098163A2 EP 00850175 A EP00850175 A EP 00850175A EP 00850175 A EP00850175 A EP 00850175A EP 1098163 A2 EP1098163 A2 EP 1098163A2
Authority
EP
European Patent Office
Prior art keywords
expendable
charge
shaped charge
shaped
charges
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
EP00850175A
Other languages
English (en)
French (fr)
Other versions
EP1098163A3 (de
EP1098163B1 (de
Inventor
Hans Karlsson
Karlstedt Gustav
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.)
Bofors Carl Gustaf AB
Original Assignee
Bofors Carl Gustaf 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 Bofors Carl Gustaf AB filed Critical Bofors Carl Gustaf AB
Publication of EP1098163A2 publication Critical patent/EP1098163A2/de
Publication of EP1098163A3 publication Critical patent/EP1098163A3/de
Application granted granted Critical
Publication of EP1098163B1 publication Critical patent/EP1098163B1/de
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
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/14—Explosion or fire protection arrangements on packages or ammunition

Definitions

  • the present invention relates to a method and a device to prevent the unintentional initiation of a shaped charge caused by fire or other means spreading to other explosive charges in the vicinity and causing a sympathetic detonation.
  • the invention is especially suitable for implementation in the storage and transportation of anti-armour weapons with transverse shaped charges, that is such weapons which have one or more shaped charges with a direction of effect which is transverse the longitudinal direction of the weapon.
  • anti-armour weapons are already in service and they are expected to become increasingly common as modem armoured vehicles with their improved armour protection consisting of both active and passive types at present and for the foreseeable future are obviously easier to combat from above where for both practical and weight reasons the armour is weakest
  • each shaped charge jet created by a detonating shaped charge is normally so well concentrated that it affects only the area in the immediate vicinity of the jet's main axis while the material around this area remains unaffected.
  • the shaped charges are provided with expendable bodies which are made of a material which is resistant to shaped charges and which have their longitudinal axes accurately directed so as to coincide with the effect direction of the shaped charges and whose lengths are such that they exceed the maximum penetration depth of the shaped charge jets in the material in question.
  • the expendable bodies can be made of steel or heavy metal for example but a body made of steel must have a greater length than a body made of heavy metal.
  • 'Heavy metal' here refers to metals or metal alloys with a density higher than that of steel.
  • the cross-sectional area of the expendable body it must be adapted to the lateral propagation of the shaped charge jet in question so that it is certain that the entire jet has effect only within the expendable body and does not break through the sidewall formed.
  • the appropriate expendable body cross sections and lengths in accordance with the invention for various shaped charges and in various materials can be calculated using computer programs that are already available.
  • the expendable body can be given different dimensions at different sections in one longitudinal direction based on the calculated lateral and longitudinal propagation of the shaped charge jet.
  • the expendable body itself can be surrounded by a tubular protecting part for example a steel tube that is capable of gathering any radial spray which occurs at penetration.
  • the said tube can also gather the shaped charge jet in the event it should break through the side of the expendable body.
  • expendable bodies in accordance with the invention which are correctly designed and accurately directed, an unintentional initiation of one or more shaped charges in a unit load will result only in the energy of the initiated shaped charge jet being consumed by forming a hole in the expendable body and of course by causing a certain amount of heat in the shell thus formed.
  • the method and design in accordance with the invention are especially suitable for implementation in connection with unit loads where the expendable bodies can be included as part of the packing material.
  • the attitude of the expendable bodies is so important it can be advantageous for each charge or charge packaging to be fitted with a suitable guide which ensures that the expendable body is correctly directed when the charges are packed in each unit load. If such a guide is added it shall not have a design that causes interference with the active function of the charge.
  • All the figures show one or several projectiles 1 intended for rechargeable anti-armour weapons.
  • Each such projectile includes a shaped charge 2 which is transverse the direction of flight.
  • How the projectiles are designed otherwise is of less interest in this context but they can be expected to include propulsion rocket motors, target sensors and possibly a guidance system.
  • the projectiles are normally in individual containers which are not shown in the figures.
  • the reference to charges for rechargeable anti-armour weapons in the figures is only one example.
  • the invention can be used for all types of shaped charges or weapons fitted with shaped charges, for example anti-armour weapons of disposable type.
  • Figure 1 illustrates the basic idea behind the invention.
  • An expendable body 4 made of material which is resistant to shaped charge jets has been fitted as close as possible outside the projectile with the said expendable body's longitudinal direction centred around the direction of effect 3 of the shaped charge.
  • the length of the expendable body 4 is selected in relation to the material it is made of so as to ensure that the shaped charge if initiated shall not pass through the entire length of the body.
  • the cross section of the expendable body does not need to be greater than that required to cover the lateral propagation of the jet which means that if the shaped charge is unintentionally ignited while the expendable body is in place the jet from the shaped charge will function only in the expendable body and there cause a longitudinal hole surrounded by thin but unbroken sidewalls.
  • the unintentionally ignited shaped charge shall use up all its energy to create a hole in the expendable body instead of initiating the other charges in the vicinity.
  • All that is required in order to implement the invention therefore is a well-directed expendable body in the form of a rod of steel, heavy metal or other material which is resistant to the jet from a shaped charge.
  • Figure 1 shows the basic principle of the invention
  • Figures 2-4 show proposals as to how the invention can be used when four projectiles 5-8 are packed together on a transport container 9.
  • numbers 5 and 6 are positioned along the container outer edges with their front sections containing the shaped charges turned in the same direction but with a small longitudinal shift to provide space for the projectiles and expendable bodies 10 and 11 which extend across a large portion of the width of the container allowing expendable bodies 10 and 11 to be relatively long and for this reason enabling them to be made of cheaper steel
  • the other two projectiles 7 and 8 facing the other direction have been fitted with expendable bodies 12 and 13 which in the example shown have less space at their disposal and it is therefore suggested that these should be made of more expensive heavy metal.
  • the guides for the positions of the expendable bodies are included in the container 9 fittings.
  • Figure 5 illustrates another version of the expendable body here designated 14 and designed with consideration to the anticipated propagation of the shaped charge in longitude and therefore has the form of a cylinder and a truncated cone directly combined.
  • Another shaped charge can require the reverse form or only a truncated cone facing in one direction.
  • the cylinder and the truncated cone can have a circular or non-circular cross-section.
  • Figure 6 shows another version of the expendable body 15 surrounded by a concentric metal tube 16 for gathering any lateral jet spray. Combinations of the features of Figures 5 and 6 are of course possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Vacuum Packaging (AREA)
  • Nozzles (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Toys (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Making Paper Articles (AREA)
EP00850175A 1999-11-05 2000-10-25 Verfahren und Verpackung zur Reduktion der Ausbreitung einer Explosion in einem Magazin, das Hohlladungen enthält Expired - Lifetime EP1098163B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9904017 1999-11-05
SE9904017A SE520378C2 (sv) 1999-11-05 1999-11-05 Sätt och anordning för att en genom brand eller på annat sätt åtadkomma vådaövertändning av en RSV-laddning resulterar i en spridning till andra närliggande laddningar

Publications (3)

Publication Number Publication Date
EP1098163A2 true EP1098163A2 (de) 2001-05-09
EP1098163A3 EP1098163A3 (de) 2002-06-12
EP1098163B1 EP1098163B1 (de) 2005-12-07

Family

ID=20417625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00850175A Expired - Lifetime EP1098163B1 (de) 1999-11-05 2000-10-25 Verfahren und Verpackung zur Reduktion der Ausbreitung einer Explosion in einem Magazin, das Hohlladungen enthält

Country Status (4)

Country Link
EP (1) EP1098163B1 (de)
AT (1) ATE312333T1 (de)
DE (1) DE60024568T2 (de)
SE (1) SE520378C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1225417A2 (de) * 2001-01-18 2002-07-24 Halliburton Energy Services, Inc. Vorrichtung und Verfahren zum Abdichten explosiver Ladungen für den Transport

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013021912A1 (de) * 2013-12-27 2015-07-02 Weco Pyrotechnische Fabrik Gmbh Haltevorrichtung für mindestens zwei Feuerwerksraketen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286708A (en) * 1979-08-21 1981-09-01 The United States Of America As Represented By The Secretary Of The Navy Module to prevent sympathetic detonations in munitions
US4440296A (en) * 1982-12-06 1984-04-03 The United States Of America As Represented By The Secretary Of The Army Anti-propagation explosive packaging
US4850260A (en) * 1986-09-29 1989-07-25 United States Of America As Represented By The Secretary Of The Army Apparatus for reduction of munition fratricide hazard
US5158173A (en) * 1990-07-27 1992-10-27 The United States Of America As Represented By The Secretary Of The Navy Weapons storage container to prevent sympathetic detonation of adjacent weapons
US5097945A (en) * 1990-12-12 1992-03-24 Schlumberger Technology Corporation Method for safe packaging of shaped charges for transport

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1225417A2 (de) * 2001-01-18 2002-07-24 Halliburton Energy Services, Inc. Vorrichtung und Verfahren zum Abdichten explosiver Ladungen für den Transport
EP1225417A3 (de) * 2001-01-18 2003-06-04 Halliburton Energy Services, Inc. Vorrichtung und Verfahren zum Abdichten explosiver Ladungen für den Transport

Also Published As

Publication number Publication date
SE9904017L (sv) 2001-05-06
ATE312333T1 (de) 2005-12-15
SE520378C2 (sv) 2003-07-01
DE60024568D1 (de) 2006-01-12
DE60024568T2 (de) 2006-08-17
EP1098163A3 (de) 2002-06-12
EP1098163B1 (de) 2005-12-07

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