EP0307307A1 - Verbindungsring zwischen Geschoss und Geschosshülse - Google Patents

Verbindungsring zwischen Geschoss und Geschosshülse Download PDF

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Publication number
EP0307307A1
EP0307307A1 EP88402250A EP88402250A EP0307307A1 EP 0307307 A1 EP0307307 A1 EP 0307307A1 EP 88402250 A EP88402250 A EP 88402250A EP 88402250 A EP88402250 A EP 88402250A EP 0307307 A1 EP0307307 A1 EP 0307307A1
Authority
EP
European Patent Office
Prior art keywords
projectile
ring
front part
fixing means
connecting device
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
EP88402250A
Other languages
English (en)
French (fr)
Other versions
EP0307307B1 (de
Inventor
Marc Berville
Joel Leblond
Jean-Claude Sauvestre
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
Direction General pour lArmement DGA
Giat Industries SA
Etat Francais
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 Direction General pour lArmement DGA, Giat Industries SA, Etat Francais filed Critical Direction General pour lArmement DGA
Priority to AT88402250T priority Critical patent/ATE78332T1/de
Publication of EP0307307A1 publication Critical patent/EP0307307A1/de
Application granted granted Critical
Publication of EP0307307B1 publication Critical patent/EP0307307B1/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
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/067—Mounting or locking missiles in cartridge cases
    • F42B5/073—Mounting or locking missiles in cartridge cases using an auxiliary locking element

Definitions

  • the field of the present invention is that of connecting devices between a shell, containing a propellant charge, and a projectile and more particularly between a combustible shell and a projectile of arrow type fired in a smooth tube.
  • US Pat. No. 4,487,131 describes a ring, glued to the combustible sleeve, and having elastic tongues intended to pinch an arrow projectile shoe at its rear part. The elasticity of the tongues thus ensures good mechanical strength of the assembly.
  • An arrow projectile is constituted by a penetrator of heavy material (for example Tungsten), under calibrated, surrounded by a fragmentable sabot comprising several elements (in general three), the mounting of such a projectile requires the elements of the sabot around the indenter, the latter is obtained in part by mounting the sealing belt on the shoe.
  • heavy material for example Tungsten
  • fragmentable sabot comprising several elements (in general three)
  • Patent US4444113 describes a high pressure seal for a fragmentable sabot projectile.
  • This seal is constituted by a skirt which locks by elastic deformation, on the one hand on the rear part of the shoe, and on the other hand on the mouth of a socket.
  • An annular rupture initiator allows the separation of the sleeve and the projectile under the effect of the pressure of the propellant gases.
  • This pressure, exerted on the internal surface of the skirt will cause a translation of the latter on ramps integral with the hoof, which will bring it into contact with the internal surface of the barrel of the weapon where it will provide an effective seal at high pressures (of the order of several hundred MPa) prevailing in the tube.
  • this patent proposes to add, in front of the high pressure sealing skirt, a guide belt and a rubber ring pinched between skirt and belt, this arrangement making it possible to obtain the desired low pressure sealing. .
  • Such an assembly is relatively complex to carry out, moreover the ramps which must be arranged on the shoe and which must also be covered with rubber in order to avoid any gas leaks between shoe and skirt, require machining and assembly operations. complementary.
  • connection device which also ensures high pressure sealing, thus avoiding the addition of additional systems.
  • the device according to the invention makes it possible on the one hand to simplify the mounting of an arrow projectile and on the other hand to facilitate the joining of the latter with a combustible case, while ensuring good resistance of the ammunition to shocks .
  • the invention provides a connecting device between a cartridge case containing a propellant charge and a projectile intended to be fired by a weapon comprising a chamber communicating with a tube, device constituted by a ring comprising a front part, made integral with the projectile by a first fixing means, and a rear part secured to the socket by a second fixing means, the device is characterized in that the second fixing means is shaped in such a way that the action of the pressure of the combustion gases of the propellant charge exerted on the projectile, causes the separation of the latter carrying the ring and the casing, and in that the rear part then comes into contact with an internal surface of the chamber, so as to achieve gas tightness .
  • the front and rear parts are separated by at least one rupture initiator, the latter being shaped so as to rupture, thereby causing the separation of the front and rear parts, this separation occurring after that of the sleeve and the projectile, and subsequently in contact between the latter and the barrel, the front part then being applied to the interior surface of the barrel, under the action of the pressure of the gases.
  • rupture initiator the latter being shaped so as to rupture, thereby causing the separation of the front and rear parts, this separation occurring after that of the sleeve and the projectile, and subsequently in contact between the latter and the barrel, the front part then being applied to the interior surface of the barrel, under the action of the pressure of the gases.
  • the rear part may include at least two weakening zones arranged along generators, and the front part at least one circular groove on its external surface.
  • the first fixing means may consist of a concordance of shapes between the front part of the ring and the lateral surface of the projectile, and in particular the front part may come to be housed in an annular groove made on the lateral surface of the projectile or else be screwed on the latter.
  • the second fixing means is constituted by a cylindrical surface, arranged on the rear part of the ring, on which is adjusted and riveted and / or glued the sleeve.
  • the second fixing means comprises a cylindrical intermediate piece which can be glued to the interior surface of the sleeve.
  • a projectile 1 summarily represented (here a shoe carrying a sub-projectile of arrow type), is made integral with a combustible case 2 by means of a connecting ring 6.
  • the assembly sleeve-ring-projectile is shown here stationed in a chamber 4 of a weapon, the projectile 1 is is then partially engaged in the tube 3 of the weapon, the front part of the chamber has a connection cone 5, and the tube is a smooth tube.
  • the connecting ring 6 has a front part 8 which is made integral with the projectile by a first fastening means, which here is a shape match between the front part of the ring and an annular groove 10 arranged on the lateral surface of the projectile 1
  • the outer diameter of the ring 6 at this front part 8 is slightly greater than the diameter of the tube 3 (the difference in diameter is of the order of 1% of the caliber), and the outer cylindrical surface of this ring carries circular grooves 14 whose function will be explained later.
  • the ring also has a rear part 7 which is secured to the sleeve 2 by a second fixing means, which here comprises an intermediate cylindrical part 12, glued to the internal cylindrical surface of the sleeve, this part may be made of loaded cellulose or not of cotton-powder, such a material being particularly easy to stick on a combustible socket.
  • the intermediate piece is fixed to the rear part 7 of the ring 6 by means of rivets 13 regularly distributed over a circular generator of the ring.
  • the outside diameter of the rear part of the ring 6 is thus substantially equal to the outside diameter of the bushing, and the connecting ring therefore has a conical portion 15 ensuring the connection of this rear part with the front section 8.
  • Front part and rear part are also separated by a breaking point 9 which is here a circular groove produced on the inner surface of the ring in front of the conical portion 15.
  • the rear part comprises, both at its conical portion and its cylindrical portion, weakening zones 11, arranged along generators and regularly spaced from each other.
  • Figure 2 allows to better see the distribution of the weakening zones 11, here four zones obtained by reductions in the thickness of the ring.
  • the ignition of the propellant charge contained in the socket 2 will generate gases, the pressure then acting both on the sleeve, the ring and the projectile will cause tensile stresses both at the level of the ring and of the fixing means, of the initiation of rupture and of the sleeve.
  • the dimensioning of the ring and the fixing means will be such that the rupture of the second fixing means will occur before that of the initiation of rupture 9. It will suffice for this to play on the thickness of the intermediate piece and on the depth of the circular groove constituting the initiation of rupture 9.
  • the separation of the sleeve and the projectile carrying the ring allows the latter, pushed by the gases, to advance into the tube.
  • the pressure of the gases by acting on the inner surface of the ring, will bring the rear part 7 into contact with an inner surface of the chamber at the level of the connection cone 5, and this in the first tenths of milliseconds following the separation (this delay can possibly be adjusted by adjusting the thickness of the ring, the distance between first and second fixing means, the number and distribution of the weakening zones 11), thus the rear part 7 of the ring allows '' obtain a seal at low pressure gases (a few MPa), seal achieved almost instantaneously, which makes it possible to use the propellant charge optimally.
  • the rear part of the ring as well as the intermediate piece 12 and the rivets 13 are expelled from the barrel of the weapon with the combustion gases following the projectile.
  • the weakening zones 11 allow a dislocation of the rear part, as a result of the passage of the connection cone, thus facilitating its ejection from the tube, a reduction in the size of the ejected pieces being also appreciable so as to avoid deterioration of the tail of the arrow sub-projectile.
  • the device according to the invention has made it possible, on the one hand to obtain a low pressure seal thanks to the rear part of the ring, and on the other hand to ensure high pressure seal in the smooth tube of the weapon through the front part of the ring.
  • the ring will thus preferably be made of a thermoplastic polymer which will be injected around the projectile. In this way we will obtain the joining of the different elements constituting the shoe with the sub-projectile, (in the case of an arrow projectile). The intermediate piece will then be riveted to the ring, then the assembly thus obtained secured to the socket by gluing.
  • the choice of an intermediate piece of cellulose, or of cardboard loaded or not with cotton-powder makes it possible on the one hand to facilitate the fixing by gluing on a combustible bushing, and on the other hand to ensure a certain flexibility in this connection, flexibility essential to avoid ruptures of the fuel socket at this level.
  • FIG. 4 shows another embodiment of the invention in which only the second fixing means used differs from the previous one.
  • the ring 6 comprises, arranged on the rear part 7, a cylindrical surface 16 which thus delimits an area of reduced thickness, therefore more fragile, which plays a role similar to that of the cylindrical intermediate piece 12 of the previous example.
  • the sleeve fits on the ring at the level of the bearing and is made integral with it by rivets (or else glue). Rivets and / or glue and cylindrical seat 16 thus constitute the second means of fixing the rear part 7 of the ring 6 with the sleeve.
  • the rear part 7 of the ring acts as a low pressure seal already described.
  • the flexibility of the shell-projectile connection, making it possible to avoid ruptures of the combustible shell, is here provided by the ring itself.
  • the manufacturing method is the same as that previously described: the ring in thermoplastic polymer will be injected around the projectile and will bring together the various elements constituting the shoe.
  • the breaking point 9 will then be formed by these rivets or else by this intermediate piece, the main thing being that the dimensioning of the fixing means is such that: the gas pressure first causes the rupture of the second fixing means and thus the separation of the sleeve and the projectile carrying the two parts of the ring; -Since the separation of the front and rear parts occurs as a result of contact between the projectile and the barrel of the weapon, in particular due to the resistance opposed by the latter to the passage of the rear part.
  • the invention will allow the use of combustible cartridges, this despite the fact that with such cartridges the movement of the projectile occurs for a lower pressure in the chamber of the weapon which could cause gas leaks towards the front of the projectile before taking scratches.
  • the rear part of the ring of the device according to the invention will ensure a low pressure seal before scratching by the projectile belt.
  • the front part of the ring may or may not be integral with the belt, and the initiation of rupture between the front part and the rear part may be omitted, the high pressure sealing function being fulfilled by the belt itself.
  • the front part of the ring will preferably be secured to the belt.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Replacement Of Web Rolls (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Toys (AREA)
EP88402250A 1987-09-09 1988-09-08 Verbindungsring zwischen Geschoss und Geschosshülse Expired - Lifetime EP0307307B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88402250T ATE78332T1 (de) 1987-09-09 1988-09-08 Verbindungsring zwischen geschoss und geschosshuelse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8712484 1987-09-09
FR8712484A FR2620214B1 (fr) 1987-09-09 1987-09-09 Bague de liaison entre un projectile et une douille

Publications (2)

Publication Number Publication Date
EP0307307A1 true EP0307307A1 (de) 1989-03-15
EP0307307B1 EP0307307B1 (de) 1992-07-15

Family

ID=9354734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402250A Expired - Lifetime EP0307307B1 (de) 1987-09-09 1988-09-08 Verbindungsring zwischen Geschoss und Geschosshülse

Country Status (6)

Country Link
EP (1) EP0307307B1 (de)
AT (1) ATE78332T1 (de)
DE (1) DE3872805T2 (de)
FR (1) FR2620214B1 (de)
IL (1) IL87694A (de)
NO (1) NO165893C (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189254A (en) * 1990-08-13 1993-02-23 Giat Industries Sealing band for an arrow-type projectile
EP0881458A1 (de) 1997-05-15 1998-12-02 GIAT Industries Treibladungsbehälter
FR2799831A1 (fr) 1999-10-13 2001-04-20 Giat Ind Sa Dispositif de fixation d'un culot obturateur sur un etui de munition et culot adapte a un tel dispositif
EP1103780A1 (de) 1999-11-25 2001-05-30 Giat Industries Verbindungsteil zwischen Geschoss und Geschosshülse und Methode zur Montage eines Dichtringes mittels eines derartigen Verbindungteiles
FR2842896A1 (fr) 2002-07-26 2004-01-30 Giat Ind Sa Ceinture d'etancheite pour un projectile, projectile sous calibre et munition equipes d'une telle ceinture
WO2009115199A1 (de) * 2008-03-20 2009-09-24 Rheinmetall Waffe Munition Gmbh Verfahren zur herstellung einer patrone mit einem treibkäfiggeschoss hergestellt nach diesem verfahren
WO2014060237A1 (de) * 2012-10-19 2014-04-24 Rheinmetall Waffe Munition Gmbh Patrone und verfahren zu seiner herstellung
FR3092660A1 (fr) 2019-02-13 2020-08-14 Nexter Munitions Fusee pour un projectile destine a etre tire par un canon
FR3113728A1 (fr) 2020-09-01 2022-03-04 Nexter Munitions Douille combustible pour munition

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713328B1 (fr) * 1993-12-01 1996-01-26 Giat Ind Sa Conteneur pour charge propulsive pouvant être rendu solidaire d'un autre conteneur.
FR2720495B1 (fr) * 1994-05-25 1996-07-19 Giat Ind Sa Dispositif permettant de solidariser deux conteneurs et conteneur associé à un tel dispositif.
FR2827039B1 (fr) 2001-07-06 2003-11-28 Giat Ind Sa Dispositif d'allumage pour un chargement propulsif
US6748870B2 (en) 2001-10-22 2004-06-15 Armtec Defense Products Company Ammunition round assembly with combustible cartridge case
US6901866B2 (en) 2001-11-27 2005-06-07 Armtec Defense Products Company Combustible cased telescoped ammunition assembly
US8146502B2 (en) 2006-01-06 2012-04-03 Armtec Defense Products Co. Combustible cartridge cased ammunition assembly
US7913625B2 (en) 2006-04-07 2011-03-29 Armtec Defense Products Co. Ammunition assembly with alternate load path
FR3094476B1 (fr) 2019-03-27 2021-02-19 Nexter Munitions Cartouche comprenant des cordeaux d'allumage

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE80060C (de) *
GB601425A (en) * 1945-10-02 1948-05-05 George Spence Sanders Improvements in the attachment of projectiles to cartridge cases in fixed ammunitionrounds
GB601481A (en) * 1945-10-02 1948-05-06 Guy Kenneth Speechly Improved means for the attachment of projectiles having skirt driving bands to cartridge cases
US2701524A (en) * 1951-02-19 1955-02-08 Helmar E Van Dine Fixed ammunition
FR2177032A1 (de) * 1972-03-22 1973-11-02 Nederl Wapen & Munitie
FR2220768A1 (de) * 1972-03-07 1974-10-04 Dynamit Nobel Ag
US3842739A (en) * 1973-05-31 1974-10-22 Remington Arms Co Inc Metallic mouth for a plastic cartridge case
FR2267536A1 (de) * 1974-04-13 1975-11-07 Schirnecker Hans Ludwig
US4444115A (en) * 1978-06-28 1984-04-24 Rheinmetall Gmbh Cartridge-type munition having a destructible or partially combustible casing
GB2132320A (en) * 1982-12-09 1984-07-04 Precitronic Improvements in or relating to sabot projectile guides

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444113A (en) * 1981-04-06 1984-04-24 The United States Of America As Represented By The Secretary Of The Army High-pressure self-sealing obturator in sabot discard projectile

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE80060C (de) *
GB601425A (en) * 1945-10-02 1948-05-05 George Spence Sanders Improvements in the attachment of projectiles to cartridge cases in fixed ammunitionrounds
GB601481A (en) * 1945-10-02 1948-05-06 Guy Kenneth Speechly Improved means for the attachment of projectiles having skirt driving bands to cartridge cases
US2701524A (en) * 1951-02-19 1955-02-08 Helmar E Van Dine Fixed ammunition
FR2220768A1 (de) * 1972-03-07 1974-10-04 Dynamit Nobel Ag
FR2177032A1 (de) * 1972-03-22 1973-11-02 Nederl Wapen & Munitie
US3842739A (en) * 1973-05-31 1974-10-22 Remington Arms Co Inc Metallic mouth for a plastic cartridge case
FR2267536A1 (de) * 1974-04-13 1975-11-07 Schirnecker Hans Ludwig
US4444115A (en) * 1978-06-28 1984-04-24 Rheinmetall Gmbh Cartridge-type munition having a destructible or partially combustible casing
GB2132320A (en) * 1982-12-09 1984-07-04 Precitronic Improvements in or relating to sabot projectile guides

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189254A (en) * 1990-08-13 1993-02-23 Giat Industries Sealing band for an arrow-type projectile
EP0881458A1 (de) 1997-05-15 1998-12-02 GIAT Industries Treibladungsbehälter
FR2799831A1 (fr) 1999-10-13 2001-04-20 Giat Ind Sa Dispositif de fixation d'un culot obturateur sur un etui de munition et culot adapte a un tel dispositif
EP1103780A1 (de) 1999-11-25 2001-05-30 Giat Industries Verbindungsteil zwischen Geschoss und Geschosshülse und Methode zur Montage eines Dichtringes mittels eines derartigen Verbindungteiles
FR2801667A1 (fr) 1999-11-25 2001-06-01 Giat Ind Sa Dispositif de liaison entre une douille et un projectile et procede de montage d'une ceinture sur un projectile mettant en oeuvre un tel dispositif de liaison
US6477958B1 (en) 1999-11-25 2002-11-12 Giat Industries Device to link a case and a projectile and process to mount a band onto a projectile implementing such a linking device
US7503262B2 (en) 2002-07-26 2009-03-17 Giat Industries Sealing band for projectile, sub-caliber projectile and ammunition equipped with such a band
WO2004017015A1 (fr) * 2002-07-26 2004-02-26 Giat Industries Ceinture d'etancheite pour projectile et munition equipee d’une telle ceinture
FR2842896A1 (fr) 2002-07-26 2004-01-30 Giat Ind Sa Ceinture d'etancheite pour un projectile, projectile sous calibre et munition equipes d'une telle ceinture
WO2009115199A1 (de) * 2008-03-20 2009-09-24 Rheinmetall Waffe Munition Gmbh Verfahren zur herstellung einer patrone mit einem treibkäfiggeschoss hergestellt nach diesem verfahren
US8522683B2 (en) * 2008-03-20 2013-09-03 Rheinmetall Waffe Munition Gmbh Method for producing a shell and a shell with a sabot projectile produced by this method
WO2014060237A1 (de) * 2012-10-19 2014-04-24 Rheinmetall Waffe Munition Gmbh Patrone und verfahren zu seiner herstellung
FR3092660A1 (fr) 2019-02-13 2020-08-14 Nexter Munitions Fusee pour un projectile destine a etre tire par un canon
WO2020165699A1 (fr) 2019-02-13 2020-08-20 Nexter Munitions Fusee pour un projectile destine a etre tire par un canon
US11774225B2 (en) 2019-02-13 2023-10-03 Nexter Munitions Fuze for a projectile intended to be fired by a cannon
FR3113728A1 (fr) 2020-09-01 2022-03-04 Nexter Munitions Douille combustible pour munition
WO2022049465A1 (fr) 2020-09-01 2022-03-10 Nexter Munitions Douille combustible pour munition

Also Published As

Publication number Publication date
DE3872805T2 (de) 1993-02-04
FR2620214A1 (fr) 1989-03-10
DE3872805D1 (de) 1992-08-20
IL87694A0 (en) 1989-02-28
NO884007D0 (no) 1988-09-08
ATE78332T1 (de) 1992-08-15
NO165893C (no) 1991-04-24
FR2620214B1 (fr) 1990-04-13
NO165893B (no) 1991-01-14
NO884007L (no) 1989-03-10
IL87694A (en) 1994-05-30
EP0307307B1 (de) 1992-07-15

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