EP0361032B1 - Allumeur de charge propulsive avec charge de découpage à amorçage par la poudre de la charge propulsive - Google Patents

Allumeur de charge propulsive avec charge de découpage à amorçage par la poudre de la charge propulsive Download PDF

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Publication number
EP0361032B1
EP0361032B1 EP89114499A EP89114499A EP0361032B1 EP 0361032 B1 EP0361032 B1 EP 0361032B1 EP 89114499 A EP89114499 A EP 89114499A EP 89114499 A EP89114499 A EP 89114499A EP 0361032 B1 EP0361032 B1 EP 0361032B1
Authority
EP
European Patent Office
Prior art keywords
charge
flame
base piece
igniter according
casing
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
EP89114499A
Other languages
German (de)
English (en)
Other versions
EP0361032A1 (fr
Inventor
Alfred Hörr
Horst Dr. Penner
Uwe Brede
Heinz Riess
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 AG
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
Priority to AT89114499T priority Critical patent/ATE75309T1/de
Publication of EP0361032A1 publication Critical patent/EP0361032A1/fr
Application granted granted Critical
Publication of EP0361032B1 publication Critical patent/EP0361032B1/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
    • F42C19/0823—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition
    • F42C19/083—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition characterised by the shape and configuration of the base element embedded in the cartridge bottom, e.g. the housing for the squib or percussion cap

Definitions

  • the invention relates to a propellant lighter containing a base piece and an igniter head part with an igniter charge, a flame guide tube connected to the igniter charge with a flame guide tube head to a transfer charge surrounded by a combustible tube with blowout holes, and a cavity containing a separating set between the flame guide tube and a metallic sleeve running under the combustible tube, the cavity extending somewhat beyond the upper edge of the metallic sleeve and the base piece, and the combustible tube being separated off by gases from the separating set directly above the upper edge of the base piece.
  • a partially combustible propellant lighter is known from DE 3 502 166 C2.
  • the separating set is intended to completely separate a combustible tube which envelops the transfer charge from the base piece.
  • the separation set is ignited by one or more bores in the head of the flame guide tube from back-flowing combustion gases from the tablet column of the transfer charge. Valve disks are present in the flame guide tube head, which fold over when the pressure rises due to the burning off of the separation set. With progressive combustion of the separation set, the pressure in the cavity rises so much that the desired separation of the combustible tube finally occurs immediately above the upper edge of the base piece.
  • Burning off the transfer charge depends on the temperature. As a result, in particular at temperatures below 0 ° C., the separating charge can be ignited too early by back-flowing gas from the transfer charge, which occurs when the charge is sharp Shot causes disturbances in ballistics; there may also be a flare in the area where the cannon is locked.
  • the object of the invention is a precise, adapted to the ambient temperature lighting of the separation set.
  • a propellant lighter which is characterized by one or more connection holes between the cavity containing the separation set and the outside of the propellant charge lighter and a valve-like seal on the flame guide tube head to the sleeve, which on the one hand the direct entry of gases of the transfer charge into prevents the cavity, which, however, allows the gases of the separation set to escape through the combustible tube above the top channel of the base piece.
  • the separating charge is therefore no longer ignited directly by the back-flowing gases of the tablet column of the transfer charge, since the rate of development of the propellant gas is temperature-dependent. Only when a certain propellant pressure has built up, i.e. If the burn-off only takes place regardless of the ambient temperature according to the specific properties of the propellant charge, the detachment charge is ignited from the outside through the casing via the firing holes. While the separation set was previously ignited 2 to 4 ms after the primary ignition element had been ignited and the start of pressure build-up due to the propellant charge gases started considerably later depending on the ambient temperature, it is now impossible to ignite the separation set too early. It is in a fixed time relationship with the pressure increase or the maximum pressure of the propellant gases.
  • the seal on the flame guide tube head has the opposite function to that of the partially combustible propellant lighter known from DE 3 502 166 C2.
  • the groove when viewed in cross section, has the shape of a trapezoid with the parallel sides parallel to the sleeve.
  • a round cord ring rests on the rear surface of the sides of the trapezoid facing the base piece. It is important that the metallic sleeve supports the round cord ring from the outside in this "sealing position". Penetration of swaths of the transfer charge into the cavity with the separating charge is thus excluded.
  • the seal on the flame guide tube head should be removed.
  • the round cord ring is pushed so high in the groove by the gases of the separation charge that the gases can cut off the already weakened combustible tube above the base piece without leaving any residue. For this reason, it is favorable if the side of the trapezoid facing the transfer charge is chamfered or rounded. So there is always perfect barrel clearance after the shot.
  • An electrically ignitable primary ignition element 15, which ignites an ignition charge 2, is installed in the base piece 1 of a propellant charge lighter.
  • the pilot flame that forms is guided through a channel 3 in a flame guide tube 6 into the transfer charge 4 made up of tablets.
  • the transfer charge 4 is held together by a combustible tube 5.
  • the combustible tube 5 is partially drawn into the bottom piece 1, with it from the inside in the lower region is supported by a metallic sleeve 9, for example made of Cu Zn 37 F 37.
  • a cavity 8 remains between the flame guide tube 6 and the combustible tube 5 or the sleeve 9, which cavity is largely filled with annular propellant tablets of the separation set 7. This cavity 8 is sealed off from the transfer charge 4, as described in FIG. 2.
  • the base piece 1, the sleeve 9 and the head part 16 of the ignition piece are connected to one another by clamping sleeves 14.
  • the firing bores 13 are characteristic, through which the separation set 7 is ignited from the outside by the propellant powder 19 surrounding the propellant charge lighter.
  • the cavity 8 is connected here on the side facing the base piece 1 via a further cavity 10 to the four firing holes 13, which are evenly distributed over the circumference here.
  • the ignition of the separating charge 7 is always time-coupled with a certain propellant gas pressure, and the combustible tube is cut off with great precision.
  • the groove 18 here has approximately a trapezoidal cross-section, the transition upwards towards the transfer charge being rounded and conical, after at the bottom towards the bottom piece 1, the groove 18 abuts the sleeve 9 vertically.
  • the round cord ring 12 should be deformed by about 3-20% when installed.
  • the metallic sleeve 9 should extend so far that it can support the sealing ring 12 to the outside.
  • the gap 20 between the metallic sleeve 9 and the flame guide tube head 11 is 0.75 mm.
  • the area 21 between the upper edge of the base piece 1 and the outlet 22 of the groove 18 has a width between 0.8 mm and 2.5 mm, preferably between 1.3 mm and 2.0 mm.
  • the outlet angle 24 of the side of the trapezoid facing away from the base piece 1 is 45 ° and the radius of curvature of the rounding 25 is 3 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighters Containing Fuel (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Seal Device For Vehicle (AREA)
  • Eye Examination Apparatus (AREA)
  • Vending Machines For Individual Products (AREA)
  • Air Bags (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Claims (14)

1. Allumeur de charge propulsive, comportant un corps (1) avec une tête d'allumeur (16) munie d'une charge d'allumage (2), un tube de guidage de flamme (6) placé à la suite de la charge d'allumage (2) et qui présente une tête de tube de guidage de flamme (11) menant à une charge relais (4) entourée d'un tube combustible (5) muni de trous d'échappement (17), ainsi qu'une cavité (8) contenant une charge de séparation (7) agencée entre le tube de guidage de flamme (6) et une douille métallique (9) qui s'étend sous le tube combustible (5), la cavité (8) s'étendant légèrement au-delà du bord supérieur de la douille métallique (9) et du bloc culasse (1) et une séparation du tube combustible (5) sous l'action des gaz de la charge de séparation (7) ayant lieu juste au-dessus du bord supérieur du corps (1), caractérisé par un ou plusieurs orifices d'allumage (13) qui réalisent une liaison entre la cavité (8) contenant la charge de séparation (7) et le côté extérieur de l'allumeur de charge propulsive et par un dispositif d'étanchéité disposé sur la tête de tube de guidage de flamme (11) qui assure l'étanchéité par rapport à la douille (9) et agit à la manière d'une soupape, qui d'une part empêche l'entrée directe des gaz de la charge relais (4) dans la cavité (8) mais permet d'autre part la sortie des gaz de la charge de séparation (7) par l'intermédiaire du tube combustible (5) au-dessus du bord supérieur du corps (1)
2. Allumeur de charge propulsive selon la revendication 1, caractérisé en ce que le bord supérieur de la douille (9) et le bord supérieur du corps (1) coïncident.
3. Allumeur de charge propulsive selon la revendication 1 ou 2, caractérisé en ce que le dispositif d'étanchéité agissant à la manière d'une soupape est formé par un joint torique (12) et une gorge (18), la gorge (18) - vue en section - ayant la forme d'un trapèze avec ses côtés parallèles disposés parallèlement à la douille (9), le côté du trapèze tourné vers le corps (1) - qui forme la surface d'appui du joint torique (8) - étant perpendiculaire à la douille (9), le côté du trapèze tourné vers la charge relais (4) étant incliné et/ou arrondi et dépassant par rapport au bord supérieur du corps (1) de manière telle que le joint torique (12) peut être déplacé par les gaz de la charge de séparation (7) en direction de la charge relais (4), au delà du bord supérieur de la douille (9).
4. Allumeur de charge propulsive selon la revendication 3, caractérisé en ce que la profondeur de la gorge (18) est comprise entre 1 et 4 mm.
5. Allumeur de charge propulsive selon la revendication 3, caractérisé en ce que la partie (21) de la gorge (18) qui fait saillie au-dessus de la douille métallique (9) est comprise entre 0,8 mm et 3,0 mm, de préférence entre 1,3 mm et 2,0 mm.
6. Allumeur de charge propulsive selon la revendication 3, caractérisé en ce que le rayon de courbure d'un arrondi (25) dans la gorge (18) est compris entre 1 mm et 5 mm et l'angle (24) du côté du trapèze éloigné du corps (1) est compris entre 30° et 60°.
7. Allumeur de charge propulsive selon l'une des revendications 1 à 6, caractérisé en ce que l'espace entre la tête de tube de guidage de flamme (11) et la douille métallique (9), entre la gorge ( 18 ) et la cavité (8) est compris entre 0,5 mm et 1,5 mm.
8. Allumeur de charge propulsive selon l'une des revendications 1 à 7, caractérisé en ce que le diamètre de la douille métallique (9) est compris entre 12 mm et 20 mm.
9. Allumeur de charge propulsive selon l'une des revendications 1 à 8, caractérisé en ce qu'au moins un orifice d'allumage (13) est aménagé sur le côté tourné vers le corps (1) de la cavité (8) contenant la charge de séparation (7).
10. Allumeur de charge propulsive selon la revendication 9, caractérisé en ce qu'une cavité (10) supplémentaire est prévue entre l'orifice d'allumage (13), au nombre d'au moins un, et la cavité (8) contenant la charge de séparation (7).
11. Allumeur de charge propulsive selon l'une des revendications 1 à 10, caractérisé en ce que le diamètre d'un orifice d'allumage (13) est compris entre 1 mm et 5 mm, de préférence entre 1,5 mm et 2,5 mm.
12. Allumeur de charge propulsive selon l'une des revendications 1 à 11, caractérisé en ce qu'il est prévu quatre orifices d'allumage (13) de préférence répartis régulièrement sur la circonférence.
13. Allumeur de charge propulsive selon l'une des revendications 1 à 12, caractérisé en ce que la liaison de la douille (9) et de la tête d'allumeur (16) avec le corps (1) est renforcée par des douilles de serrage et/ou des goupilles élastiques (14).
14. Allumeur de charge propulsive selon l'une des revendications 1 à 13, caractérisé en ce que le joint d'étanchéité (12) est en matière plastique résistant à la température.
EP89114499A 1988-09-01 1989-08-05 Allumeur de charge propulsive avec charge de découpage à amorçage par la poudre de la charge propulsive Expired - Lifetime EP0361032B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89114499T ATE75309T1 (de) 1988-09-01 1989-08-05 Treibladungsanzuender mit vom treibladungspulver initiierter abtrennladung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3829657 1988-09-01
DE3829657A DE3829657A1 (de) 1988-09-01 1988-09-01 Treibladungsanzuender mit vom treibladungspulver initiierter abtrennladung

Publications (2)

Publication Number Publication Date
EP0361032A1 EP0361032A1 (fr) 1990-04-04
EP0361032B1 true EP0361032B1 (fr) 1992-04-22

Family

ID=6362048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114499A Expired - Lifetime EP0361032B1 (fr) 1988-09-01 1989-08-05 Allumeur de charge propulsive avec charge de découpage à amorçage par la poudre de la charge propulsive

Country Status (4)

Country Link
US (1) US4913052A (fr)
EP (1) EP0361032B1 (fr)
AT (1) ATE75309T1 (fr)
DE (2) DE3829657A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4240273A1 (de) * 1992-12-01 1994-06-09 Dynamit Nobel Ag Treibladungsanzünder
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
US6761116B2 (en) * 2001-10-17 2004-07-13 Textron Sytems Corporation Constant output high-precision microcapillary pyrotechnic initiator
WO2010055089A1 (fr) * 2008-11-13 2010-05-20 Ruag Ammotec Gmbh Allumeur pyrotechnique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3226269C2 (de) * 1982-07-14 1986-04-17 Dynamit Nobel Ag, 5210 Troisdorf Teilverbrennbarer Treibladungsanzünder
DE3502166A1 (de) * 1985-01-23 1986-07-24 Dynamit Nobel Ag, 5210 Troisdorf Teilverbrennbarer treibladungsanzuender

Also Published As

Publication number Publication date
ATE75309T1 (de) 1992-05-15
EP0361032A1 (fr) 1990-04-04
DE3829657A1 (de) 1990-03-08
DE58901236D1 (de) 1992-05-27
US4913052A (en) 1990-04-03

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