EP0113270A1 - Anordnung zum Zünden einer Ladung mittels radial gerichteter Detonationswelle - Google Patents

Anordnung zum Zünden einer Ladung mittels radial gerichteter Detonationswelle Download PDF

Info

Publication number
EP0113270A1
EP0113270A1 EP19830402374 EP83402374A EP0113270A1 EP 0113270 A1 EP0113270 A1 EP 0113270A1 EP 19830402374 EP19830402374 EP 19830402374 EP 83402374 A EP83402374 A EP 83402374A EP 0113270 A1 EP0113270 A1 EP 0113270A1
Authority
EP
European Patent Office
Prior art keywords
explosive
priming system
relay
anvils
cylindrical
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
EP19830402374
Other languages
English (en)
French (fr)
Other versions
EP0113270B1 (de
Inventor
Pierre Deneuville
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.)
Societe Nationale des Poudres et Explosifs
Original Assignee
Societe Nationale des Poudres et Explosifs
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 Societe Nationale des Poudres et Explosifs filed Critical Societe Nationale des Poudres et Explosifs
Publication of EP0113270A1 publication Critical patent/EP0113270A1/de
Application granted granted Critical
Publication of EP0113270B1 publication Critical patent/EP0113270B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/095—Arrangements of a multiplicity of primers or detonators, dispersed around a warhead, one of the primers or detonators being selected for directional detonation effects

Definitions

  • the present invention relates to the initiation of explosive bodies and in particular the initiation of explosive bodies contained in projectiles of the bomb or shell type. More specifically, the invention relates to a system for initiating such explosive bodies making it possible to create a toroidal or cylindrical detonation wave directed perpendicular to the axis of revolution of said system.
  • the ignition of an explosive body is carried out by a linear pyrotechnic chain consisting of a detonator followed by a relay charge itself followed by the explosive body.
  • the initial detonation wave produced by the detonator is amplified by the relay charge and initiates the detonation of the explosive body, the detonation therefore propagating along the 'axis of the above-mentioned pyrotechnic chain.
  • the detonation of the explosive body has the function of causing the bursting of the metallic body enveloping the explosive body.
  • the detonation wave strikes the end of said metallic body lying in the extension of the axis of said pyrotechnic chain, which does not cause an optimal bursting of this metallic body.
  • Explosive projectiles being, as a rule, solids of revolution, we then sought cylindrical initiation systems can be housed axially in the explosive body and creating a detonation wave propagating perpendicular to the axis of revolution of said system so that the detonation wave created in said explosive body strikes the maximum surface of the body metallic enveloping said explosive body.
  • Such a system is for example described in French patent 1,571,182 and is composed with reference to FIGS.
  • a priming system capable of creating a detonation wave which moves perpendicular to the axis of revolution of said system and which is toric or cylindrical and of large dimensions.
  • a priming system essentially consists, with reference to FIG. 1, of a cylindrical block of powerful secondary explosive 14 having a transient detonation regime enclosed between two cylindrical anvils 12 and 13 so that that the flat faces of the cylindrical block 14 of explosive are in perfect contact with the flat faces of the anvils 12 and 13 without a layer of interstitial air.
  • the explosive constituting block 14 is a powerful secondary explosive having a transient detonation regime. It is therefore an explosive which can detonate only if it is initiated by a detonation wave coming from a primary explosive; it cannot be initiated by a simple shock or by a spark.
  • this explosive must still have a transient detonation regime, that is to say that the speed of propagation of the detonation in this explosive in the different possible directions is a function of the surrounding confinement.
  • Explosives with a transient detonation regime are explosives that are very sensitive to lateral detent waves.
  • the main explosives known at present for presenting a transient detonation regime are on the one hand hexocires or octocires, that is to say waxes loaded with hexogen or octogen and on the other hand composite explosives with a binder inert plastic, such as polyurethanes or polybudienes, loaded with powerful secondary explosives such as in particular hexogen or octogen.
  • the cylindrical relay load 14 has a length substantially equal to its diameter.
  • the cylindrical anvils 12 and 13 are of the same diameter as the relay charge 14. They are made either of a heavy and non-brittle metal such as iron, steel or heavy iron-based alloys or of composite material consisting of a resin heavily loaded with heavy metal. As can be seen in Figure 1, the two anvils 12 and 13 are not identical.
  • the anvil 12 is a full cylindrical anvil.
  • the anvil 13 has over its entire length a cylindrical channel 15 whose axis coincides with that of said anvil.
  • the diameter of the channel 15 is substantially equal to the diameter of the detonator which will be used for igniting the priming system.
  • One of the faces of the anvil 13 typically carries a counterbore 16.
  • the counterbore 16 is advantageously of circular section and according to a preferred embodiment of the invention the counterbore 16 forms a hollow cylinder coaxial with the channel 15.
  • the face of the anvil 13 carrying the countersink 16 is disposed in contact with the relay charge 14.
  • a detonator 17 is introduced into the channel 15 so as to come into contact with the relay charge 14.
  • the detonator 17 is either a conventional electric detonator such as shown schematically in Figure 1 or any other equivalent device such as, for example, an explosive relay device and detonating cord.
  • the free space 18 typically located between the detonator 17 and the internal walls of the counterbore 16 is filled either with air or with a flexible material such as, for example, synthetic foam.
  • the priming system according to the invention can, as shown in Figure 1, be arranged inside a metal tube 11. This is a practical embodiment of the invention but not d 'an essential achievement. In fact, in the presence of sufficiently hard explosives, it is possible to do without the metal tube and place the anvils and the explosive with a transient detonation regime directly in the channel dug in the explosive to be detonated, as will be seen from the rest of the description.
  • a secondary cylindrical explosive 19 is housed in a metallic body 20.
  • a central channel 21 is hollowed out in the explosive 19, the axis of revolution 22 of the channel 21 being coincident with that of the explosive 19.
  • a priming system according to the invention as described above is placed in the channel 21.
  • the detonator 17 creates a detonation wave which initiates a detonation D in the secondary explosive with transient regime 14.
  • the presence of the free space 18 slows down the propagation of the detonation wave D in the directions perpendicular to the axis 22 while this detonation accelerates in the direction of the axis 22 and thus becomes a spherical wave which strikes on the one hand the walls of the tube 11 and on the other hand the anvil 12.
  • the anvil 12 does not retransmit the detonation in the direction of the axis 22.
  • the anvils 12 and 13 then reinforce the detonation D which initiates the through the walls of the tube 11 a detonation L perpendicular to the axis 22 in the explosion f cylindrical 19.
  • the detonation L is propagated in the explosive 19 perpendicular to the axis 22 and strikes the cylindrical walls of the casing 20 with full force.
  • the priming system according to the invention thus made it possible to produce a toroidal detonation wave perpendicular to its axis of revolution. Its operation would have been identical in the absence of the metal tube 11, the detonation wave D coming in the latter case to directly strike the secondary explosive 19.
  • This particular embodiment relates to a priming device for creating a detonation wave propagating perpendicular to the axis of revolution of said device and consisting of two priming systems according to the invention arranged symmetrically around a common central anvil.
  • a channel 24 in which is placed a tube 25.
  • a central anvil 26 surrounded by two blocks 27 and 28 of explosive having a transient detonation regime.
  • the tube 25 is closed at each of its ends by anvils 29 and 30 similar to the anvil 13 described above.
  • Detonators 31 and 32 are placed in anvils 29 and 30.
  • the simultaneous firing of detonators 31 and 32 gives rise in explosive 23 to initial detonation waves L1 and L2 propagating perpendicular to the axis of revolution of the tube 25.
  • Such a priming device can be used to create a quasi-cylindrical detonation wave L of high power in the load 23.
  • FIG. 4 Another variant embodiment of the invention is shown in FIG. 4.
  • a mass of explosive 33 is hollowed out a cylindrical channel 34.
  • this channel there is, directly in contact with the explosive, an anvil 35, a block of explosive 36 having a transient detonation regime and an anvil 37.
  • L Anvil 37 is provided with a central channel 38 and a counterbore 39 as described above.
  • the originality of the present embodiment lies in the fact that the explosive block 36 having a transient detonation regime has been hollowed out over a short length so as to present an axial recess 40 of circular section opposite the counterbore 39 carried by the anvil 37.
  • this recess is cylindrical.
  • the channel 39 and the recess 40 are shown with an identical diameter but this is not a necessary condition according to the invention.
  • a detonator 41 is placed in the channel 38 so as to come into contact with the explosive 36 by penetrating into the recess 40 which must, in any event, have a diameter greater than the diameter of the detonator 41.
  • the operation of this embodiment is identical to that of the embodiments shown in FIGS. 1 and 2.
  • the initiation systems according to the invention thus make it possible to create a toroidal or quasi-cylindrical detonation wave, of large surface area, which propagates perpendicular to the axis of priming system revolution.
  • Example 1 In a cylindrical block of composite explosive with polyurethane binder loaded with octogen, a central cylindrical channel with a diameter of 22 mm was dug in which a priming system similar to that shown in FIG. 1 was placed.
  • the metal tube It was a copper tube 1 mm thick and 90 mm long.
  • the anvil 12 in steel was 20 mm in diameter and 33.5 mm long.
  • the relay load 14 consisted of a cylindrical hexocire block 20 mm in diameter and 20 mm long.
  • the anvil 13 in steel was 20 mm in diameter and 33.5 mm long.
  • the central channel 15 was 7.1 mm in diameter
  • the cylindrical counterbore 16 was 15 mm in diameter over a depth of 8 mm.
  • a cylindrical electric detonator with exploded wire of diameter 7 mm and length 9.35 mm was put in place.
  • the free space 18 was filled with air. After ignition, a detonation wave propagating perpendicular to the axis of revolution of the channel in which the ignition system was housed was obtained in the composite explosive block.
  • Example 2 This example concerns the particular implementation of a priming device according to the invention as shown in FIG. 3.
  • a central cylindrical channel with a diameter of 20 mm was dug in which two priming systems were placed in a manner similar to that shown in FIG. 3 with the exception of the metal tube 25 which was not used in this example.
  • the central anvil 26 in steel was 20 mm in diameter and 69 mm long.
  • the two relay charges 27 and 28 were in hexocire and were 20 mm in diameter and 20 mm in length.
  • the steel end anvils 29 and 30 were 20 mm in diameter and 33.5 mm in length.
  • the central channel was 7.1 mm in diameter and the axial cylindrical counterbore 15 mm in diameter over a depth of 8 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP19830402374 1982-12-29 1983-12-08 Anordnung zum Zünden einer Ladung mittels radial gerichteter Detonationswelle Expired EP0113270B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8221997A FR2538893A1 (fr) 1982-12-29 1982-12-29 Systeme d'amorcage pour dispositif explosif, permettant de creer une onde de detonation torique ou cylindrique dirigee perpendiculairement a l'axe de revolution dudit systeme
FR8221997 1982-12-29

Publications (2)

Publication Number Publication Date
EP0113270A1 true EP0113270A1 (de) 1984-07-11
EP0113270B1 EP0113270B1 (de) 1986-11-20

Family

ID=9280631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830402374 Expired EP0113270B1 (de) 1982-12-29 1983-12-08 Anordnung zum Zünden einer Ladung mittels radial gerichteter Detonationswelle

Country Status (3)

Country Link
EP (1) EP0113270B1 (de)
DE (1) DE3367807D1 (de)
FR (1) FR2538893A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167167A (en) * 1984-11-13 1986-05-21 Junghans Gmbh Geb A detonation system
EP0327211A2 (de) * 1988-02-03 1989-08-09 Imperial Chemical Industries Plc Mehrrichtungszünder für Sprengladungen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1145210A (fr) * 1959-01-14 1957-10-23 Borg Warner Perfectionnements apportés aux charges explosives
FR1571182A (de) * 1967-06-30 1969-06-13
FR2308906A1 (fr) * 1975-04-23 1976-11-19 Luchaire Sa Amorcage perfectionne pour charges creuses d'engins explosifs
DE2908310B1 (de) * 1979-03-03 1980-05-14 Thomanek Franz Rudolf Prof Dip Sprengladung,insbesondere Hohlladung mit Reflektoren und Leitkoerpern zur oertlichen Verdaemmung der Sprengladung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1145210A (fr) * 1959-01-14 1957-10-23 Borg Warner Perfectionnements apportés aux charges explosives
FR1571182A (de) * 1967-06-30 1969-06-13
FR2308906A1 (fr) * 1975-04-23 1976-11-19 Luchaire Sa Amorcage perfectionne pour charges creuses d'engins explosifs
DE2908310B1 (de) * 1979-03-03 1980-05-14 Thomanek Franz Rudolf Prof Dip Sprengladung,insbesondere Hohlladung mit Reflektoren und Leitkoerpern zur oertlichen Verdaemmung der Sprengladung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167167A (en) * 1984-11-13 1986-05-21 Junghans Gmbh Geb A detonation system
EP0327211A2 (de) * 1988-02-03 1989-08-09 Imperial Chemical Industries Plc Mehrrichtungszünder für Sprengladungen
EP0327211A3 (de) * 1988-02-03 1990-01-10 Imperial Chemical Industries Plc Mehrrichtungszünder für Sprengladungen

Also Published As

Publication number Publication date
FR2538893A1 (fr) 1984-07-06
FR2538893B1 (de) 1985-05-24
EP0113270B1 (de) 1986-11-20
DE3367807D1 (en) 1987-01-08

Similar Documents

Publication Publication Date Title
EP0048204B1 (de) Patrone mit pyrotechnisch betätigter Nutzladung und mit Sicherheitseinrichtungen
US4132171A (en) Apparatus for detonating an explosive charge
CA2056170A1 (fr) Detonateur pyrotechnique a connexions coaxiales
EP3102906B1 (de) Hohlladung und verwendung zur trennung von zwei stockwerken eines luftfahrtfahrzeugs oder zur neutralisierung davon
FR2559896A1 (fr) Retard d'initiation pour tete militaire a charges formees montees en tandem
EP0561085B1 (de) Verfahren zum Verwenden einer Hohlladung zum Durchschlagen einer mit einer reaktiven Vorpanzerung versehenen Panzerplatte
EP0113270B1 (de) Anordnung zum Zünden einer Ladung mittels radial gerichteter Detonationswelle
EP2962060B1 (de) Munition mit veränderbarer explosiver kapazität
EP1766323B1 (de) Geschoss, insbesondere eine infrastruktur durchschlagende bombe und wanddurchschlagverfahren für das geschoss
FR2642158A1 (fr) Procede de preparation d'un ensemble retardateur pour detonateur et ensemble retardateur
FR2768501A1 (fr) Generateur pyrotechnique adaptatif de gaz pour coussin de protection avec dispositif de neutralisation
EP0134169A1 (de) Verfahren und Vorrichtung zur Ausbildung einer Detonationswellenfront
EP0221218A1 (de) Sprengkopf mit hintereinanderliegenden Hohlladungen
FR2561376A1 (fr) Engin explosif a fragmentation
EP1319920A1 (de) Pyrotechnische Trennungsvorrichtung und damit ausgerüstetes Trennsystem
EP0862044B1 (de) Zünder mit einer Sprengwand
EP3344547A1 (de) Verfahren zur linearen trennung und verbindung von zwei elementen
FR2738309A1 (fr) Vis de sectionnement
EP1577635B1 (de) Zündeinrichtung für zwei Explosivladungen und Gefechtskopf der eine solchen Zündeinrichtung verwendet
FR2555733A1 (fr) Fusee percutante pour projectiles
FR2519784A1 (fr) Dispositif de transmission multivoies d'un ordre pyrotechnique comportant un ensemble relais a relevement de pieces
FR2552871A1 (fr) Projectile antichar agissant en vitesse defilante
WO2023111463A1 (fr) Ensemble separable par decoupe pyrotechnique
FR2523713A1 (fr) Charge creuse
EP0412897A1 (de) Zweistufengeschütz mit pyrotechnischer Treibladung und elektrischer Zündung

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

Designated state(s): BE DE GB IT

17P Request for examination filed

Effective date: 19840816

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB IT

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3367807

Country of ref document: DE

Date of ref document: 19870108

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
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19971201

Year of fee payment: 15

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

Ref country code: BE

Payment date: 19980121

Year of fee payment: 15

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

Ref country code: DE

Payment date: 19980227

Year of fee payment: 15

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: 19981208

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

Ref country code: BE

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

Effective date: 19981231

BERE Be: lapsed

Owner name: SOC. NATIONALE DES POUDRES ET EXPLOSIFS

Effective date: 19981231

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

Effective date: 19981208

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: 19991001