EP0600385A1 - Allumeur pour charge propulsive - Google Patents

Allumeur pour charge propulsive Download PDF

Info

Publication number
EP0600385A1
EP0600385A1 EP93119070A EP93119070A EP0600385A1 EP 0600385 A1 EP0600385 A1 EP 0600385A1 EP 93119070 A EP93119070 A EP 93119070A EP 93119070 A EP93119070 A EP 93119070A EP 0600385 A1 EP0600385 A1 EP 0600385A1
Authority
EP
European Patent Office
Prior art keywords
guide tube
ignition
charge
propellant
propellant charge
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
EP93119070A
Other languages
German (de)
English (en)
Other versions
EP0600385B1 (fr
Inventor
Alfred Hörr
Heinz Riess
Uwe Brede
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.)
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of EP0600385A1 publication Critical patent/EP0600385A1/fr
Application granted granted Critical
Publication of EP0600385B1 publication Critical patent/EP0600385B1/fr
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
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/0823—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition
    • F42C19/0826—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition comprising an elongated perforated tube, i.e. flame tube, for the transmission of the initial energy to the propellant charge, e.g. used for artillery shells and kinetic energy penetrators
    • 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
    • F42C19/0807—Primers; Detonators characterised by the particular configuration of the transmission channels from the priming energy source to the charge to be ignited, e.g. multiple channels, nozzles, diaphragms or filters

Definitions

  • the invention relates to a propellant charge igniter according to the preamble of claim 1.
  • the propellant charge arranged in a propellant charge carrier for example a cartridge, must be fired in a controlled manner.
  • the aim is to ignite the entire propellant charge in such a way that a high initial pressure is quickly generated and that the pressure is then kept at a high level for as long as possible.
  • Local pressure peaks occurring within the propellant charge are undesirable since they have a negative effect on the further burn-up of the propellant charge and also negatively affect the life of the launch tube.
  • Propellant charges are therefore not only ignited from one end, but special propellant charge lighters with ignition guide tubes are used.
  • DE 38 29 657 A1 discloses a propellant charge igniter in which a transfer charge arranged in an elongated ignition guide tube (winding tube) is ignited by means of an ignition charge.
  • the ignition guide tube which is arranged concentrically to a flame guide tube, protrudes into a piece of floor with its end on the base piece side.
  • a separation charge is arranged within the contour of the bottom part of the flame guide tube.
  • the propellant charge lighter has a metallic sleeve which is arranged between the separating charge and the ignition guide tube.
  • annular seal is arranged in a circumferential groove of the flame guide tube, which acts as a valve with the metallic sleeve and the flame guide tube and, in the open position, allows the hot combustion gases of the separating charge to flow against the ignition guide tube.
  • the ignition of a propellant charge with the propellant charge lighter according to DE 38 29 657 A1 takes place in such a way that the primer charge first ignites the transfer charge, which is composed of annular igniter tablets. The transfer charge then ignites the propellant charge through openings in the ignition guide tube, which in turn then ignites the separation charge through firing holes in the base piece. The hot gases of the separating charge push the ring seal aside and cut through the ignition guide tube in the region of the end of the base piece facing away from the base side. Due to the gases flowing out of the launch tube, the separated part of the ignition guide tube is then thrown out of the launch tube, while the other part of the ignition guide tube remains in connection with the base piece.
  • the transfer charge which is composed of annular igniter tablets.
  • the transfer charge then ignites the propellant charge through openings in the ignition guide tube, which in turn then ignites the separation charge through firing holes in the base piece.
  • the hot gases of the separating charge push the ring seal aside and cut through the ignition guide tube in the region of the end of
  • the invention has for its object to provide a propellant lighter in which the risk of afterglow is avoided.
  • the fuel assembly is an expulsion unit for the complete expulsion of the ignition guide tube from the annular space, which merges into the combustion chamber at its end facing the bottom side. Due to the transition of the annular space into the combustion space, the gases generated in the combustion space by the combustion of the expulsion set can press onto an end face of the ignition guide tube facing the base side and thereby drive it out of the annular space. As a result, only metallic parts remain on the base piece after the shot and the base piece itself in the weapon barrel, which cool down quickly due to the good heat conduction of the metal parts. Due to the complete expulsion of the ignition guide tube, an afterglow of material in the bottom screw is avoided.
  • the annular space is preferably from a substantially tapering towards the bottom side limited conical inner surface of the base piece.
  • This conical inner surface cooperates with a conical outer surface of the ignition guide tube, the angle of inclination to the longitudinal axis of the propellant charge lighter corresponds to the cone angle of the inner surface of the base piece in the annular space area, so that a secure connection of the ignition guide tube to the base piece is ensured before firing.
  • the conical surfaces transmit shock or pressure forces on the tip of the propellant tube safely to the base.
  • the two conical surfaces also allow a particularly reliable separation of the ignition guide tube from the base piece, since when the ignition guide tube is driven out, frictional forces between the ignition guide tube and the base piece are only effective over a short range.
  • the base piece At its end facing away from the bottom side, the base piece preferably has on its inside a toothing which is in engagement with the ignition guide tube. By means of this toothing, the base piece claws with the ignition guide tube in such a way that a secure connection is provided during the transportation of the propellant charge lighter.
  • the base piece can also be pressed inwards at its end facing away from the base side by squeezing the ignition guide tube. The pressing in, which takes place after the ignition guide tube and the base part have been plugged together, creates a zone on the ignition guide tube which bears against the end face of the base piece.
  • the claw and the zone formed by the indentation cause the ignition guide tube by axial compression or by a defined axial tensile stress can not be pushed further into the bottom piece or pulled out. This maintains the frictional force set during the manufacture of the propellant lighter and matched to the strength of the expelling charge, so that ammunition provided with the propellant charge lighter according to the invention can also be dropped with a parachute.
  • the inner surface of the base piece can also be glued to the outer surface of the ignition guide tube.
  • an immovable ring seal is arranged in an annular groove in the flame guide tube, which rests in the ring groove and on the ignition guide tube and seals the flame guide tube with respect to the ignition guide tube surrounding it.
  • the drivable ignition guide tube of the propellant charge lighter which is preferably a winding tube made of a fiber material, can be made of a combustible / consumable material which therefore largely burns during the ignition or combustion of the propellant charge of the cartridge.
  • the ignition guide tube can be wound from a glass fiber reinforced plastic.
  • a propellant lighter 10 is shown, which is installed in a cartridge bottom part 12 turned from metal.
  • the cartridge base part 12 is open towards its upper end facing away from the base side 14.
  • a combustible cartridge case 16 which carries a bullet (not shown) at its front end.
  • the cartridge bottom part 12 and the cartridge shell 16 are filled with a propellant charge 18, which consists of individual, pourable propellant grains 20, and thus form a propellant charge carrier.
  • the propellant charge lighter 10 has a bottom piece 24 with a bottom side 26 which is coaxial to the Cartridge bottom part 12 extends and its end facing away from the bottom side 26 does not protrude beyond the edge 30 of the cartridge bottom part 12 facing away from the bottom side 14.
  • An igniter 32 with a cylindrical igniter housing 33 is screwed into the base piece 24 and has an electrically ignitable primary ignition element 34 and an ignition charge 36 ignitable by the latter.
  • the ignition charge 36 is arranged in a cavity 38 of the base piece 24, which is open in the direction away from the base side 26 and merges there into a flame channel 42 which extends along the longitudinal axis 40 of the propellant charge lighter 10 and is formed in a flame guide tube 44 made of metal .
  • the flame guide tube 44 is firmly connected to the base piece 24.
  • a combustion chamber 52 At the end of the annular space 49 facing the bottom side 26 there is a combustion chamber 52 in which an expulsion set 54 is arranged.
  • the expulsion set 54 consists of annular propellant tablets which surround a tapered area of the flame guide tube 44.
  • the winding tube 50 consists of fiber-reinforced plastic, in particular of high-strength textile fiber that can be consumed by combustion, and has a thickening 56 on its end facing the bottom side 26, the outer surface 58 of which tapers towards the bottom side 26.
  • the angle of inclination of the outer surface 58 to the longitudinal axis 40 of the propellant lighter corresponds to that of the Inner surface of the base piece 24 in the region of the annular space 49.
  • the winding tube 50 has an annular end surface 60 which faces the combustion space 52.
  • a transfer charge 64 is arranged in the winding tube 50, which has radially extending openings 62.
  • the winding tube 50 which surrounds the flame guide tube 44, which is essentially circular-cylindrical in the area of the annular space 49, is sealed off from the flame guide tube 44 by means of an annular seal 68 arranged in an external annular groove 66 of the flame guide tube 44.
  • the annular groove 66 and the ring seal 68 are matched so that the ring seal 68 is immovable in the annular groove 66.
  • the base piece 24 has a metallic intermediate part 70 into which the flame guide tube 44 can be screwed in such a way that the expulsion set 54 is held around the flame guide tube 44 between a shoulder 72 and the intermediate part 70.
  • the intermediate part 70 is arranged in a concentric longitudinal bore 74 of the base piece 24 and is fixed by means of pins 76 which protrude through the base piece 24 into the intermediate piece 70.
  • the essentially hollow cylindrical base piece 24 also has radially extending firing openings 78, via which the combustion chamber 52 communicates with the interior of the cartridge surrounding the base piece 24 and filled with the propellant charge 18.
  • the base piece 24 has teeth 80 on its end 28 facing away from the base side 26 - preferably a flat thread.
  • the gearing is engaged with the winding tube 50.
  • the base piece 24 is also flanged or pressed radially inward at its end 28 facing away from the base side 26 and enclosing the winding tube 50.
  • An adhesive layer 83 can also be provided between the conical outer surface 58 of the winding tube 50 and the conical inner surface 48 of the base piece 24.
  • a plug 84 is provided to seal the winding tube 50 at the end 28 facing away from the base side 26.
  • the winding tube 50 is provided at its front end 28 facing away from the bottom with a tip 86 which facilitates the insertion of the propellant charge lighter 10 into the poured propellant charge 18.
  • the insertion of the propellant charge lighter 10 is facilitated by a thin cover 88 made of thermoplastic plastic - preferably a shrink tube - which extends over the entire winding tube 50 and over the area of the base piece 24 which contains the firing openings 78 and the propellant charge lighter 10 before it penetrates Protects moisture.
  • the electrically actuable ignition trigger element 34 is triggered. This ignites the ignition charge 36, the hot gases of which then pass through the flame channel 42 to the transfer charge 64.
  • the hot compressed gases of the transfer charge 64 break open the cover 88 over the openings 62 and ignite the propellant charge 18.
  • the propellant charge gases then accelerate the projectile and also penetrate the cover 88 over the firing openings 78 and into the combustion chamber through them 52 a.
  • the expulsion set 54 arranged in the combustion chamber 52 then ignites and its gases act on the annular end face 60 of the winding tube 50, which then releases from the frictional engagement with the base piece 24.
  • the strength of the expulsion set 54 is selected so that the force generated by the compressed gases outweighs the frictional force, the force in the adhesive layer 83 and that of the toothing 80.
  • the winding tube 50 is driven further out of the firing area of the weapon by the suction effect of the propellant charge gases in order to better burn in the erosive gas stream.
  • An undesired early ignition of the expulsion set 54 is prevented by the ring seal 68 in the propellant charge lighter 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighters Containing Fuel (AREA)
  • Air Bags (AREA)
EP93119070A 1992-12-01 1993-11-26 Allumeur pour charge propulsive Expired - Lifetime EP0600385B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4240273A DE4240273A1 (de) 1992-12-01 1992-12-01 Treibladungsanzünder
DE4240273 1992-12-01

Publications (2)

Publication Number Publication Date
EP0600385A1 true EP0600385A1 (fr) 1994-06-08
EP0600385B1 EP0600385B1 (fr) 1997-05-28

Family

ID=6474033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93119070A Expired - Lifetime EP0600385B1 (fr) 1992-12-01 1993-11-26 Allumeur pour charge propulsive

Country Status (3)

Country Link
US (1) US5335600A (fr)
EP (1) EP0600385B1 (fr)
DE (2) DE4240273A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281118B (en) * 1993-08-16 1997-06-18 Stylobate Proprietaries Limite Gas cartridge
FR2802297B1 (fr) * 1999-12-08 2002-10-11 Giat Ind Sa Tube allumeur pour munition d'artillerie
FR2806789B1 (fr) * 2000-03-23 2002-06-07 Giat Ind Sa Tube allumeur pour une munition d'artillerie
US6672215B2 (en) * 2001-10-17 2004-01-06 Textron Systems Corporation Constant output high-precision microcapillary pyrotechnic initiator
DE20208287U1 (de) * 2002-05-28 2002-09-05 Hans Eichner Gmbh & Co Kg Druckgas-Schussvorrichtung
US20050257783A1 (en) * 2004-05-19 2005-11-24 Tippmann Dennis J Jr Valve arrangement
DE102007039662B4 (de) * 2007-08-22 2014-12-04 Rheinmetall Waffe Munition Gmbh Treibladungsanzünder
US7784404B2 (en) * 2007-11-01 2010-08-31 Alliant Techsystems Inc. Dual fault safe and arm device, adaptive structures therewith and safety and reliability features therefor
FI120708B (fi) * 2008-01-31 2010-01-29 Patria Weapon Systems Oy Sovitelma ammuksen tukemiseksi aseen putkeen, tukielementti ja menetelmä
DE102009052753B4 (de) 2008-11-13 2022-01-20 Ruag Ammotec Gmbh Pyrotechnischer Anzünder
RU2508523C2 (ru) * 2012-04-26 2014-02-27 Открытое акционерное общество "Научно-производственное предприятие "Краснознаменец" Трубка воспламенительная электроударного действия
US9249759B1 (en) * 2012-08-30 2016-02-02 The United States Of America As Represented By The Secretary Of The Army Nozzled mortar ignition system for improved performance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0100840A2 (fr) * 1982-07-14 1984-02-22 Dynamit Nobel Aktiengesellschaft Amorce partiellement combustible pour charge propulsive
DE3502166A1 (de) * 1985-01-23 1986-07-24 Dynamit Nobel Ag, 5210 Troisdorf Teilverbrennbarer treibladungsanzuender
FR2593905A1 (fr) * 1986-02-03 1987-08-07 France Etat Armement Allumeur destructible pour charges propulsives
DE3829657A1 (de) * 1988-09-01 1990-03-08 Dynamit Nobel Ag Treibladungsanzuender mit vom treibladungspulver initiierter abtrennladung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648137C2 (de) * 1976-10-23 1984-04-12 Dynamit Nobel Ag, 5210 Troisdorf Treibladungsanzünder für Munition
DE3009342A1 (de) * 1980-03-12 1986-06-26 Rheinmetall GmbH, 4000 Düsseldorf Patronierte munition mit einer wenigstens teilverbrennbaren treibladungshuelse
DE3938123A1 (de) * 1989-11-16 1991-05-23 Diehl Gmbh & Co Treibladungsanzuender
US5052302A (en) * 1990-07-26 1991-10-01 Olin Corporation Unpressurized combustible primer for cannon cartridges

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0100840A2 (fr) * 1982-07-14 1984-02-22 Dynamit Nobel Aktiengesellschaft Amorce partiellement combustible pour charge propulsive
DE3502166A1 (de) * 1985-01-23 1986-07-24 Dynamit Nobel Ag, 5210 Troisdorf Teilverbrennbarer treibladungsanzuender
FR2593905A1 (fr) * 1986-02-03 1987-08-07 France Etat Armement Allumeur destructible pour charges propulsives
DE3829657A1 (de) * 1988-09-01 1990-03-08 Dynamit Nobel Ag Treibladungsanzuender mit vom treibladungspulver initiierter abtrennladung

Also Published As

Publication number Publication date
EP0600385B1 (fr) 1997-05-28
US5335600A (en) 1994-08-09
DE59306589D1 (de) 1997-07-03
DE4240273A1 (de) 1994-06-09

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