EP0541412A1 - Trägergeschoss mit einem Kolben zum Auswerfen einer Submunition - Google Patents

Trägergeschoss mit einem Kolben zum Auswerfen einer Submunition Download PDF

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Publication number
EP0541412A1
EP0541412A1 EP92402727A EP92402727A EP0541412A1 EP 0541412 A1 EP0541412 A1 EP 0541412A1 EP 92402727 A EP92402727 A EP 92402727A EP 92402727 A EP92402727 A EP 92402727A EP 0541412 A1 EP0541412 A1 EP 0541412A1
Authority
EP
European Patent Office
Prior art keywords
piston
shell
coil
shell according
cargo
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
EP92402727A
Other languages
English (en)
French (fr)
Other versions
EP0541412B1 (de
Inventor
Régis Aumasson
Dominique Dion
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 EP0541412A1 publication Critical patent/EP0541412A1/de
Application granted granted Critical
Publication of EP0541412B1 publication Critical patent/EP0541412B1/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
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/62—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile

Definitions

  • the technical field of the present invention is that of cargo shells carrying a payload, for example one or more submunitions, and ejecting this load on the trajectory by means of a piston pushed by a gas pressure.
  • Such a shell is composed in a known manner of a body provided at the rear of a belt.
  • a warhead and a base are respectively screwed to the front and rear ends of the body.
  • the interior of the body carries a payload composed for example of at least one submunition.
  • a charge of unloading bootable by a rocket In the head of the warhead is housed a charge of unloading bootable by a rocket.
  • the rocket initiates the loading charge which generates a gas pressure.
  • the latter axially pushes a piston which drives the payload and the base for their ejection from the shell.
  • the piston must separate from the payload after the ejection of the latter without coming to disturb its trajectory.
  • the invention relates to a cargo shell intended to transport a payload and constituted by a body closed at one of its ends by a base and at the other by a warhead inside which is disposed a pyrotechnic composition generating gas intended to come to act on a piston at the time of ejection of the charge, shell characterized in that it comprises means ensuring a connection between the piston and the shell after the ejection of the payload.
  • connection means comprise at least one cable, one end of which is secured to the shell at the level of the warhead and the other end of which is secured to a coil fixed to the piston, the cable being wound on the spool.
  • the axis of the coil is offset relative to the axis of the shell, which avoids interference between the piston and the payload in the event of cable breakage.
  • the shell comprises at least two cables winding on at least two coils regularly distributed angularly on the piston.
  • the axis of the reel coincides with the axis of the shell.
  • the coil (s) may be formed by one or more cylindrical extensions of the piston.
  • the coil is temporarily held, for example by point of glue, on a counterbore carried by a ring secured to the warhead, the piston carrying means allowing its attachment to the coil.
  • the means for attaching the piston to the coil may include a deformable elastic ring disposed in a groove in the piston.
  • the coil will carry a conical profile intended to cause the erasure of the elastic ring in its groove when the piston is put in place, as well as a clearance intended to receive the elastic ring which thus fixes the piston and the coil.
  • a cargo shell 1 is conventionally constituted by a body 2 provided at the rear with a belt 3. At the rear end of the body 2 is screwed a base 4 while at the front end is screwed with a warhead 5.
  • the warhead 5 carries a rocket 6, of the electrical or mechanical chronometric type, intended to initiate a pyrotechnic composition 7 generating gas.
  • a payload composed here of three submunitions 8a, 8b and 8c, for example dispersible mines.
  • a piston 9 bears on one side against the submunition 8c and on the other side against the rear end of the warhead 5 and thus delimits inside the latter a chamber 12.
  • the piston 9 is linked to the cargo shell at the level of the warhead 5 by a connection means which is here a steel cable 10 of approximately one millimeter in diameter.
  • a connection means which is here a steel cable 10 of approximately one millimeter in diameter.
  • One end of the cable 10 carries a loop which is fixed to the warhead 5 by means of a screw (of which only the axis is shown here).
  • the other end of the cable is fixed to a winding reel 11 whose axis is made integral with the piston by another screw.
  • the cable is wound on the reel during the assembly of the shell.
  • the base 4 is thus ejected the first followed by the first submunition 8a, the second 8b and the third 8c.
  • the piston 9 which is linked to the cargo shell 1 by the cable 10 connected to the warhead 5 dissociates from the submunition 8c leaving the latter continuing its trajectory without disturbance (see FIG. 2).
  • the length of the cable 10 is determined as a function of the length of the body 2 in order to eject the last submunition 8c. It will therefore be at least equal to the length of the body of the cargo shell 2.
  • the axis of the coil 11 is here offset relative to the axis of the cargo shell 1 which allows the piston 9 to be ejected laterally out of the trajectory of the shell in the event of cable breakage 10. On This avoids any interference with the last submunition 8c ejected.
  • braking means are preferably provided between the payload and the shell body or between the piston and the shell body.
  • braking means are constituted for example by elastic spring blades fixed on the external cylindrical surface of the piston and which come to bear on the internal cylindrical surface of the body of the shell.
  • the cargo shell 1 comprises a ring 13 screwed onto the warhead 5 and intended to make up for the axial play in mounting the stack of submunitions 8a, 8b, 8c.
  • This ring has a hole 23 which allows the passage of gases from the pyrotechnic composition 7 to the piston 9.
  • the ring 13 is screwed through the opening of the warhead 5 intended to receive the rocket 6 by means of notches 14 made on the upper face of the ring.
  • the rear face of the ring 13 has a countersink 15 intended to receive, in a slightly sliding manner, the end of a coil 11.
  • a cable 10 On this coil 11 is wound a cable 10, one of the ends of which carries a crimped head 18 which comes in a housing of complementary shape arranged on the reel 11 and secures the latter with the cable.
  • the other end of the cable is crimped in a threaded sleeve itself connected by screwing to the ring 13.
  • the piston 9 carries a groove 19 in which is mounted an elastic ring 20, the function of which will be specified later.
  • the coil 11 has a conical profile 21 allowing during assembly to cause the elastic erasure of the ring 20 in its groove 19. After passage of the conical profile 21, the ring 20 protrudes in a clearance 22 made on the coil 11.
  • the pellet is ejected first followed by the first submunition 8a, the second 8b and then the third 8c.
  • the piston 9 which is linked to the cargo shell 1 by the cable 10 fixed to the ring 13 dissociates from the submunition 8c letting the latter continue its trajectory without disturbance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Damping Devices (AREA)
EP92402727A 1991-11-06 1992-10-06 Trägergeschoss mit einem Kolben zum Auswerfen einer Submunition Expired - Lifetime EP0541412B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9113673A FR2683309B1 (fr) 1991-11-06 1991-11-06 Obus cargo ejectant une charge utile au moyen d'un piston.
FR9113673 1991-11-06

Publications (2)

Publication Number Publication Date
EP0541412A1 true EP0541412A1 (de) 1993-05-12
EP0541412B1 EP0541412B1 (de) 1995-12-27

Family

ID=9418659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402727A Expired - Lifetime EP0541412B1 (de) 1991-11-06 1992-10-06 Trägergeschoss mit einem Kolben zum Auswerfen einer Submunition

Country Status (4)

Country Link
US (1) US5287810A (de)
EP (1) EP0541412B1 (de)
DE (1) DE69207157T2 (de)
FR (1) FR2683309B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2722872B1 (fr) * 1994-07-19 1996-10-04 Lacroix Soc E Dispositif pyrotechnique de lancement d'au moins un projectile
DE59704496D1 (de) * 1996-03-08 2001-10-11 Diehl Stiftung & Co Verfahren und Einrichtung zum Verbringen einer grosskalibrigen Nutzlast über ein Einsatzgelände
US6470805B1 (en) * 2001-04-30 2002-10-29 The United States Of America As Represented By The Secretary Of The Navy Fire retardant bio-friendly practice munition
US7168368B1 (en) * 2004-05-06 2007-01-30 The United States Of America As Represented By The Secretary Of The Navy Apparatus for expelling a payload from a warhead
US10809045B1 (en) 2018-05-10 2020-10-20 The United States Of America As Represented By The Secretary Of The Air Force Forward firing fragmentation (FFF) munition including fragmentation adjustment system and associated methods
US11561075B2 (en) * 2018-12-13 2023-01-24 The United States Of America, As Represented By The Secretary Of The Navy Projectile with pyrotechnically timed release of a secondary payload

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274655A (en) * 1937-03-18 1942-03-03 Bickel Erich Aerial multimine
US2973712A (en) * 1959-02-11 1961-03-07 Bendix Corp High altitude sounding projectile
FR2363077A1 (fr) * 1976-08-23 1978-03-24 Foerenade Fabriksverken Dispositif d'ejection et de separation de plusieurs elements loges dans une ogive ou analogue

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US854624A (en) * 1907-02-02 1907-05-21 Charles H Banks Means for throwing life-lines.
US3092358A (en) * 1961-09-20 1963-06-04 Jr James H Potts Parachute pack opener
DE2140875A1 (de) * 1971-08-14 1973-02-22 Messerschmitt Boelkow Blohm Vorrichtung zum rueckstoss- und knallfreien abschiessen von geschossen
DE2824203A1 (de) * 1978-06-02 1979-12-06 Diehl Gmbh & Co Geschoss mit einem bergbaren zuender
DE3705078C1 (de) * 1987-02-18 1988-04-21 Rheinmetall Gmbh Geschoss mit Bremsfallschirm
DE3924397A1 (de) * 1989-07-24 1991-02-07 Rheinmetall Gmbh Traegergeschoss
US5160800A (en) * 1991-04-24 1992-11-03 The United States Of America As Represented By The Secretary Of The Navy Obturator retaining means

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274655A (en) * 1937-03-18 1942-03-03 Bickel Erich Aerial multimine
US2973712A (en) * 1959-02-11 1961-03-07 Bendix Corp High altitude sounding projectile
FR2363077A1 (fr) * 1976-08-23 1978-03-24 Foerenade Fabriksverken Dispositif d'ejection et de separation de plusieurs elements loges dans une ogive ou analogue

Also Published As

Publication number Publication date
US5287810A (en) 1994-02-22
EP0541412B1 (de) 1995-12-27
FR2683309A1 (fr) 1993-05-07
FR2683309B1 (fr) 1993-12-31
DE69207157D1 (de) 1996-02-08
DE69207157T2 (de) 1996-06-05

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