EP0773425B1 - Auskleidungsbefestigungsmittel für eine Hohlladung - Google Patents

Auskleidungsbefestigungsmittel für eine Hohlladung Download PDF

Info

Publication number
EP0773425B1
EP0773425B1 EP19960402313 EP96402313A EP0773425B1 EP 0773425 B1 EP0773425 B1 EP 0773425B1 EP 19960402313 EP19960402313 EP 19960402313 EP 96402313 A EP96402313 A EP 96402313A EP 0773425 B1 EP0773425 B1 EP 0773425B1
Authority
EP
European Patent Office
Prior art keywords
charge
washer
retention device
vector
coating
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
EP19960402313
Other languages
English (en)
French (fr)
Other versions
EP0773425A1 (de
Inventor
Pascal Laurend
Michel Vives
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.)
Giat Industries SA
Original Assignee
Giat Industries SA
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 Giat Industries SA filed Critical Giat Industries SA
Publication of EP0773425A1 publication Critical patent/EP0773425A1/de
Application granted granted Critical
Publication of EP0773425B1 publication Critical patent/EP0773425B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/028—Shaped or hollow charges characterised by the form of the liner

Definitions

  • the technical field of the invention is that of devices for maintaining the coating of a load nucleus generator and more particularly of a charge core generator intended to be placed in inside a vector, like a cargo shell, and to be ejected out of it at a given time on trajectory
  • Core generating charges generally include an explosive charge placed in an envelope and on which is applied a coating having the overall shape of a spherical cap.
  • the coating When the explosive detonates, the coating is set in motion by the incident pressure wave. It is deforms by turning "in a glove", that is to say that it turns into a projectile (or nucleus) whose front part is formed by the axial area of the covering and the rear part is a skirt formed by the periphery of the coating.
  • Patent FR2627580 describes such a generating charge of nucleus.
  • the coating is usually attached to the load explosive by bonding or it is immobilized in relation to the load envelope by means of a support integral with the envelope and placed in front of the covering.
  • the installation of a support in front of the covering has the major drawback of disrupting training of the kernel by loading. This disturbance is present even by adopting a support such as that described by FR2657156 which dissociates itself from the envelope by the action of detonation of the explosive charge.
  • nucleus-generating charges which are intended to be ejected from a vector are subject to significant acceleration efforts that can cause, separation of the coating and the load, or any at least one degradation of the coating, thus adversely affecting the subsequent nucleus formation.
  • the problem of the behavior of the coating acceleration is all the more complex as the load in principle submitted when firing the vector (such as a artillery shell) at first acceleration, then knows during the ejection of the load out of the vector a second acceleration having a direction opposite to that of the first.
  • the device according to the invention thus ensures a excellent resistance of the load to stress of acceleration undergone by it inside the vector without disturbing the formation of the nucleus.
  • the subject of the invention is a holding device of a coating of a core-generating charge with respect to to an envelope of said charge, a charge which is intended for be placed inside a vector, such as a shell cargo, and to be ejected from this vector at an instant given on trajectory, device comprising means of wedging which ensures axial retention of the coating by load envelope, device characterized by what the wedging means are kept applied to the coating by means of support which is external to the load and which is ejected out of the vector at the same time as the latter, the wedging means separating from the load during of its ejection from the vector.
  • the support means may be constituted by another charge placed in the vector.
  • the wedging means will also be able to ensure the rotational drive of the coating.
  • the means of wedging have a washer or an annular support which is supported on a peripheral area of the coating.
  • This washer or support can be divided into at minus two parts that separate when the ejection of the load out of the vector.
  • the washer may have spring tabs, regularly angularly distributed and which are arranged so as to allow compression deformation of the washer.
  • the spring tabs may have a shape of arcs of circle concentric with the washer.
  • the means of wedging may include a cup kept applied on an external surface of the coating.
  • a sheet of compressible material may be placed between the coating and the cup.
  • a vector 1 which is here an artillery cargo shell, has a closed envelope 2 at one end by a base 3 and at the other end by a warhead 4.
  • Envelope 2 here contains two anti-tank submunitions 5a, 5b, which are held axially between the base 3 and a piston 6.
  • This shell is intended to eject at a given time on trajectory of the submunitions 5a and 5b.
  • the ejection is controlled by a chronometric rocket 7, which initiates a gas generating charge 8.
  • the gas pressure pushes the piston which causes the separation of the base 3 and envelope 2 then the exit of submunitions 5a, 5b out of the envelope.
  • Such a shell is known for example from the patent FR2682754, which shows in particular the means allowing the rotational drive of the submunitions by the envelope as well as those allowing an adjustment of the axial clearance between the submunitions and the envelope (means which are not shown here).
  • the submunitions 5a and 5b are generating charges of nucleus.
  • Each load thus includes an envelope 10 to inside which an explosive charge is placed 9.
  • a coating 11 is applied to the explosive charge 9.
  • the coating is kept applied axially on the load explosive by wedging means which include a support annular 12.
  • This annular support is shown in more detail in Figures 2a and 2b. It has a smaller outer diameter or equal to the diameter of the shell 2 of the shell and on which there is a groove 13 intended to cooperate with a key (not shown) to ensure its training in rotation by the envelope 2.
  • the support 12 has a circular internal fold 14 which has a surface corresponding to the external surface of the coating 11. It also has a flat rear face 15 which is supported on the second load 5b and a flat edge 16 which comes to bear on the casing 10 of the load 5a.
  • the support 12 is found pinched between the two charges 5a and 5b. He then ensures axial retention of the coating 11 relative to the envelope 10 of the load 5a (as well as an axial maintenance of the load explosive 9 relative to the envelope 10).
  • the support is kept applied in this position of wedging of the covering by means of support which is formed by the second charge 5b.
  • FIG. 1a represents this same cargo shell 1 at the time of the ejection on the trajectory of the charges 5a, 5b.
  • the pressure of the gases generated by the generating charge of gas 8 separates the base 3 from the casing 2 of the shell and pushes in the direction marked by the arrow F stacking of charges outside the envelope 2.
  • the support 12 which is not integral with the loads 5a or 5b separates from these during ejection.
  • the nucleus-generating charge 5a then has the configuration, shown in Figure 1a, in which none ring or obstacle is not in front of the covering 11.
  • the invention it is possible not to link the coating 11 to the load only by fixing means light and not very resistant, for example by gluing the coating on the explosive charge 9.
  • This variant will give some elasticity to the bond, possibly allowing compensate for thermal expansion.
  • the coating of the load 5b is maintained axially by a similar support (not shown) arranged between the piston 6 and the load 5b.
  • Figure 3a shows a second embodiment of the invention in which the coating 11 of the load 5a is held axially relative to the casing 10 by wedging means constituted by a thin cup 17.
  • the cup 17 has a circular border 18 which is pinched between the two charges 5a, 5b and it has a curved profile which matches that of the external surface of the coating 11.
  • the cup will preferably be made of metal by example in steel or aluminum alloy.
  • the cup 17 is separates from the coating 11 as well as the elastomer 19 which may advantageously be glued to the cup.
  • the core charge of submunition 5a does not therefore no longer has any disruptive obstacle placed in front its coating.
  • This embodiment makes it possible to distribute the forces relatively uniform acceleration and on the entire outer surface of the covering 11. It is particularly well suited to loads generating core which use coatings whose material is ductile or for which the nucleus formation is disturbed by the presence of local constraints on the coating.
  • This embodiment also makes it possible to protect the external surface of the covering 11 of impacts or friction occurring at the time of ejection.
  • FIG. 3b shows an alternative embodiment in which the cup 17 is annular and therefore has a axial hole 20.
  • This embodiment makes it possible to give the cup a increased elasticity (possibly allowing to compensate for thermal expansions).
  • FIG. 4a shows a third embodiment of the invention in which the cup 17 does not include circular edge 18 but a flat support crown 21.
  • a washer 22 is placed on this support crown and comes between the load 5b and the cup 17.
  • the timing means therefore include the cup 17 and the washer 22, and these wedging means are kept applied to the coating 11 by a support means which is constituted by the load 5b.
  • the washer has a diameter slightly larger than that of the envelope 10 and is housed in a counterbore 10a of the envelope.
  • the counterbore carries dishes intended to cooperate with the washer to ensure its rotational drive.
  • the washer 22 is shown in more detail in Figures 4b and 4c. It is made of spring steel sheet stamped and it has spring tabs 23 (here four tabs), evenly distributed angularly, and which are supported on the crown 21 of the cup 17.
  • These spring tabs 23 have here the shape of arcs of circles concentric with the washer 22 and they are obtained by cutting the washer.
  • the washer 22 also has three flats 24, regularly distributed angularly, which cooperate with corresponding machining arranged on the casing 10 at the level counterbore 10a. These flats ensure the rotary drive of the washer 22 by the load 5a.
  • the washer 22 is deformable into compression and it makes it possible to make up for the axial clearances between the covering 11 and the covering 10, mainly the clearances due to thermal expansion.
  • the cup allows the stresses to be distributed over the entire external surface of the coating.
  • the washer 22 and cup 17 separate from the load 5a and therefore do not disturb the subsequent formation of the core.
  • the advantage of this embodiment is that it allows provide excellent mechanical resistance to acceleration load ejection while allowing expansion very reliably and reproducibly.
  • the washer must therefore be defined so that, the tabs come to rest on the cup and have a orientation such as the direction of rotation of the shell corresponds to an arc oriented from the base of the tongue towards its free end.
  • Figures 5a and 5b show another variant of realization of the washer 22 in which the tongues spring 23 extend in a radial direction from the washer.
  • These tabs have a shape such that they come in contact with the concave surface of the cup 17.
  • Figure 6 shows for example a spring washer 22 performed in four sectors 22a, 22b, 22c and 22d and the figure 7 shows a cup 17 made in three sectors 17a, 17b and 17c.
  • Figures 3 to 7 may well heard also to be used to maintain the coating and loading the load 5b.
  • the support means will be constituted for example by the piston 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (9)

  1. Vorrichtung zur Erhaltung des Mantels (11) einer Kernmantelladung (5a) gegenüber einer Hülse (10) der genannten Ladung, die in das Innere eines Trägers (1), etwa ein Frachtgeschoß, eingesetzt und zu einem gegebenen Zeitpunkt auf die Flugbahn ausgeworfen wird, eine Vorrichtung mit Positionierungshilfen, die einen axialen Erhalt des Mantels (11) gegenüber der Hülse (10) der Ladung sicherstellen, dadurch gekennzeichnet, daß die Positionierungshilfen durch eine Auflage auf dem Mantel (11) angebracht werden, die sich außerhalb der Ladung (5a) befindet und zur gleichen Zeit wie diese aus dem Träger ausgeworfen wird, wobei sich die Positionierungshilfen beim Auswurf aus dem Träger von der Ladung trennen
  2. Vorrichtung zur Erhaltung des Mantels nach Anspruch 1, dadurch gekennzeichnet, daß die Auflage durch eine zweite Ladung (5b), die sich im Träger befindet, gebildet wird.
  3. Vorrichtung zur Erhaltung des Mantels nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Positionierungshilfen auch die Rotation des Mantels (11) sicherstellen.
  4. Vorrichtung zur Erhaltung des Mantels nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Positionierungshilfen ein Plättchen (22) oder einen ringförmigen Träger (12) aufweisen, der auf der äußeren Ummantelung (11) aufliegt.
  5. Vorrichtung zur Erhaltung des Mantels nach Anspruch 4, dadurch gekennzeichnet, daß das Plättchen (22) oder der Träger (12) in zumindest zwei Teile geteilt wird, die sich beim Auswurf der Ladung aus dem Träger voneinander lösen.
  6. Vorrichtung zur Erhaltung des Mantels nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß das Plättchen (22) Federlaschen (23) enthält, die gleichmäßig eckig verteilt und so angebracht sind, daß sie durch Druck eine Verformung des Plättchens (22) ermöglichen.
  7. Vorrichtung zur Erhaltung des Mantels nach Anspruch 6, dadurch gekennzeichnet, daß die Federlaschen (23) die Form eines zum Plättchen (22) konzentrischen Kreisbogens haben.
  8. Vorrichtung zur Erhaltung des Mantels nach einer der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Positionierungshilfen mit einer Kapsel (17) versehen sind, die so angebracht wird, daß sie auf einer Außenfläche des Mantels (11) gehalten wird.
  9. Vorrichtung zur Erhaltung des Mantels nach Anspruch 8, dadurch gekennzeichnet, daß zwischen dem Mantel (11) und der Kapsel (17) ist eine Folie (19) aus komprimierbarem Material angebracht werden.
EP19960402313 1995-11-13 1996-10-30 Auskleidungsbefestigungsmittel für eine Hohlladung Expired - Lifetime EP0773425B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9513379 1995-11-13
FR9513379A FR2741143B1 (fr) 1995-11-13 1995-11-13 Dispositif de maintien d'un revetement d'une charge generatrice de noyau

Publications (2)

Publication Number Publication Date
EP0773425A1 EP0773425A1 (de) 1997-05-14
EP0773425B1 true EP0773425B1 (de) 2000-05-17

Family

ID=9484475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960402313 Expired - Lifetime EP0773425B1 (de) 1995-11-13 1996-10-30 Auskleidungsbefestigungsmittel für eine Hohlladung

Country Status (3)

Country Link
EP (1) EP0773425B1 (de)
DE (1) DE69608392T2 (de)
FR (1) FR2741143B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11053782B2 (en) 2018-04-06 2021-07-06 DynaEnergetics Europe GmbH Perforating gun system and method of use

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10520286B2 (en) * 2018-04-06 2019-12-31 Dynaenergetics Gmbh & Co. Kg Inlay for shaped charge and method of use

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2071272A5 (en) * 1969-12-23 1971-09-17 Serat Parachute mine laying system - using mother projectile
FR2086531A5 (en) * 1970-04-01 1971-12-31 Clausin Pierre Plate charges - insulating screen
DE2046372C3 (de) * 1970-09-19 1978-11-23 Dynamit Nobel Ag, 5210 Troisdorf Hohlladung
DE2807309C1 (de) * 1978-02-21 1987-07-23 Messerschmitt Boelkow Blohm Sprengladung mit stachel- oder projektilbildenden Belegungen
DE3510402A1 (de) * 1985-03-22 1986-09-25 Diehl GmbH & Co, 8500 Nürnberg Stapelbare munition
DE3540021A1 (de) * 1985-11-12 1987-05-21 Messerschmitt Boelkow Blohm Mehrteilige hohlladungsauskleidung
DE3635361A1 (de) * 1986-10-17 1988-04-21 Diehl Gmbh & Co Artilleriegeschoss mit submunitionen
FR2627580B1 (fr) 1988-02-18 1993-02-19 France Etat Armement Procede permettant d'obtenir un noyau comportant des ailettes stabilisatrices et charge militaire faisant application
DE3933955A1 (de) * 1989-10-11 1991-04-18 Diehl Gmbh & Co Submunition mit einer hohlladung
DE4001041A1 (de) 1990-01-16 1991-07-18 Rheinmetall Gmbh Befestigungsring zur axialen fixierung einer projektilbildenden einlage
SE502461C2 (sv) * 1991-07-01 1995-10-23 Bofors Ab Sätt vid projektilbildande explosiva laddningar
FR2682754B1 (fr) 1991-10-22 1995-03-03 Giat Ind Sa Obus cargo.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11053782B2 (en) 2018-04-06 2021-07-06 DynaEnergetics Europe GmbH Perforating gun system and method of use
US11753909B2 (en) 2018-04-06 2023-09-12 DynaEnergetics Europe GmbH Perforating gun system and method of use

Also Published As

Publication number Publication date
DE69608392D1 (de) 2000-06-21
DE69608392T2 (de) 2000-09-21
EP0773425A1 (de) 1997-05-14
FR2741143B1 (fr) 1998-01-02
FR2741143A1 (fr) 1997-05-16

Similar Documents

Publication Publication Date Title
EP0640205B1 (de) Hülse für teleskopische munitionen
EP1092939A1 (de) Vorrichtung zum Befestigen eines Hülsenbodens an einer Treibladungshülse und Hülsenboden für eine solche Befestigungseinrichtung
EP0541411B1 (de) Vorrichtung zum Auswerfen der Submunitionen aus einem Trägergeschoss
EP1225322B1 (de) Vorrichtung zum Zentrieren eines Rohres in einer Turbinenwelle
EP0572643B1 (de) Kugelfang fuer gewehrgranate mit kugelsplitterfangeinrichtung
EP0773425B1 (de) Auskleidungsbefestigungsmittel für eine Hohlladung
EP0539257B1 (de) Trägergeschoss
EP0401115B1 (de) Vorrichtung zum Halten eines Geschosses in bezug auf das Gehäuse einer teleskopartigen Munition
EP0425379B1 (de) Unterkalibriges Geschoss mit einem Geschosskern, einem Treibkäfig und einem Mantel
EP0773424B1 (de) Hohlladungsgefechtskopf mit verbesserter Beschleunigungsfestigkeit
EP0891496B1 (de) Übertragungsgelenkkreuz und entsprechendes übertragungsgelenk
EP0857938B1 (de) Hohlladung mit Verbindungsmittel zwischen der Anlage und der Hülle
EP0566469B1 (de) Sicherheits- und Schärfvorrichtung für Zünder von Geschossen mit einem Erschütterungsschutzmittel
EP0471617B1 (de) Dichtungsband für Pfeilgeschoss
EP0594482B1 (de) Treibladungsbehälter
EP0660070A1 (de) Treibladungsbehälter und Verfahren zu seiner Herstellung
WO1994020813A1 (fr) Munition de type telescopee
EP0395456B1 (de) Verbindungsvorrichtung zwischen zwei Teilstücken eines drallstabilisierten Geschosses
EP0401114B1 (de) Vorrichtung zum Halten eines Geschosses in bezug auf das Gehäuse einer teleskopartigen Munition
EP0773423A1 (de) Hohlladung mit Auskleidungsbefestigungsmitteln
EP0752572B1 (de) Gefechtskopf mit Hohlladung und mit einem solchem Gefechtskopf versehene Munition
EP0775887B1 (de) Haltevorrichtung für die Beutel einer explosiven Ladung
EP1586852A1 (de) Hülsenlose Munition und Herstellungsverfahren dafür
EP0724132A1 (de) Vorrichtung zum Sichern und Schärfen des Zünders eines Geschosses
EP4008992A1 (de) Kreiselstabilisiertes geschoss

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB SE

17P Request for examination filed

Effective date: 19970611

17Q First examination report despatched

Effective date: 19990310

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB SE

REF Corresponds to:

Ref document number: 69608392

Country of ref document: DE

Date of ref document: 20000621

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000605

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20090625 AND 20090701

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120924

Year of fee payment: 17

Ref country code: SE

Payment date: 20120924

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120924

Year of fee payment: 17

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20131030

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69608392

Country of ref document: DE

Effective date: 20140501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140501

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131031