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EP0100840A2 - Amorce partiellement combustible pour charge propulsive - Google Patents

Amorce partiellement combustible pour charge propulsive Download PDF

Info

Publication number
EP0100840A2
EP0100840A2 EP83105851A EP83105851A EP0100840A2 EP 0100840 A2 EP0100840 A2 EP 0100840A2 EP 83105851 A EP83105851 A EP 83105851A EP 83105851 A EP83105851 A EP 83105851A EP 0100840 A2 EP0100840 A2 EP 0100840A2
Authority
EP
European Patent Office
Prior art keywords
ignition
cavity
charge
nozzle
lighter according
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
EP83105851A
Other languages
German (de)
English (en)
Other versions
EP0100840A3 (en
EP0100840B1 (fr
Inventor
Uwe Brede
Alfred Hörr
Horst Dr. Penner
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
Publication of EP0100840A2 publication Critical patent/EP0100840A2/fr
Publication of EP0100840A3 publication Critical patent/EP0100840A3/de
Application granted granted Critical
Publication of EP0100840B1 publication Critical patent/EP0100840B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00Details of fuzes
    • F42C19/08Primers; Detonators
    • F42C19/0823Primers or igniters for the initiation or the propellant charge in a cartridged ammunition
    • F42C19/0826Primers 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00Details of fuzes
    • F42C19/08Primers; Detonators
    • F42C19/0823Primers or igniters for the initiation or the propellant charge in a cartridged ammunition
    • F42C19/083Primers 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 present invention relates to propellant lighters which contain a combustible ignition guide tube which is inserted into a metallic base piece.
  • the metallic base piece is optionally in several parts and encloses an ignition charge and an adjoining, centrally arranged, separating gas guide space which opens into the interior of the ignition guide tube.
  • There is a transfer charge in the ignition guide tube which ignites a main charge which is arranged all around the ignition guide tube.
  • a propellant charge lighter which has a, possibly multi-part, metallic base piece which encloses an ignition charge and a centrally arranged separating gas guide space which is connected thereto, and a combustible which contains a transfer charge and is inserted into the base piece and adjoining it Has ignition guide tube, which is characterized by the arrangements specified in the characterizing part of claim 1.
  • the cavity according to the invention is partially or completely delimited on one longitudinal side by the combustible ignition guide tube. It is not necessary according to the invention that the ignition guide tube is inserted into the bottom part up to the bottom of this cavity; it is only essential that it forms the lateral boundary for the cavity at least up to the upper edge of the nozzle.
  • the ignition guide tube is inserted into the base piece down to the bottom of the cavity, it is advantageous to cover it with a metal wall towards the cavity. An undesirable afterglow of the part of the primer tube inserted into the base piece can thereby be prevented.
  • the cavity is further designed so that the gases developed therein by burning off the separation charge in it can escape through the nozzle.
  • the cavity therefore has a more or less chamfer towards the nozzle.
  • the angle of this chamfer depends on the fluid mechanical properties, such as, for example, pressure, temperature, speed and toughness of the combustion gases of the charge powder. It is preferably between 40 and 50 °.
  • the nozzle is preferably annular.
  • Their gap width which also depends on the above-mentioned fluid mechanical properties of the combustion gases of the separation charge located in the cavity, should preferably be between 0.2 and 0.7 mm.
  • the part of the base piece, which is located between the cavity and the ignition gas guide space, can also be anchored as a separate section prefabricated in the base piece.
  • this section is in the form of a tube, the inside diameter of which corresponds to the desired diameter of the ignition gas guide space.
  • the tube end is then designed as a collar; the end of this collar forms the lower edge of the nozzle; the geometric shape of the collar end then also determines the geometric shape of the nozzle, the shape of the collar preferably being designed as a hexagon.
  • the material of such a tube can be different from the material of the base piece; if necessary, it can also be a combustible material.
  • the separation charge in the cavity is a powder known per se e.g. based on nitrocellulose or black powder or a boron / potassium nitrate powder or mixtures of these components. It is preferably in tablet form and partially or completely fills the cavity.
  • the cavity is designed as an annular cavity, then it is advantageous to also use the separating charge tablets as ring tablets.
  • the chronological course of the burn-off of this separation charge tablet can be controlled by adding delay sets.
  • the tablet closest to the nozzle preferably contains such a delay set, known per se.
  • an advantageous embodiment of the invention also provides an additional gas intake volume, which then - i.e. below - on the cavity containing the charge powder; The ignition gases flowing through the ring nozzle from the outside initially collect there. This can improve the ignition of the separation charge.
  • the inventive design of a propellant charge lighter causes the ignition guide tube to be particularly mechanically and thermally attacked in the area of the nozzle, so that there is complete combustion or separation of this tube.
  • the present implementation thus leads to the solution of the task.
  • FIG. 1 shows a half section through the ignition piece of a propellant charge lighter with an arrangement according to the invention.
  • An ignition guide tube 5 is inserted into the base piece 1.
  • a central ignition charge 2 for example one, not ge here showed electrical detonators can be ignited.
  • the base piece surrounds the centrally located ignition gas guide space 3 and, together with the lower part of the ignition guide tube 5, the cavity 8, which is designed as a high pressure space.
  • This high-pressure space contains annular separation charge tablets 7.
  • An annular nozzle 9 connects the high-pressure space 8 to the space formed by the ignition guide tube 5, in which the transfer charge 4 is accommodated in the form of a tablet column.
  • a gas holding volume 11 is also provided below the separating charge, so that there is a better flow through the ring tablets 7 during ignition.
  • Figure 2 shows a detailed, preferred implementation form in the region of the cavity 8 and the nozzle 9.
  • the wall of the cavity 8 is covered opposite the ignition guide tube 5 by a metal wall 10. This metal wall can also cover only a part of the ignition guide tube or can be guided up to the nozzle.
  • the inner part of the wall of the cavity is designed as a tube 6 which has a collar 12 towards the ignition guide tube.
  • the collar 12 is also designed so that its end piece has a chamfer of approximately 45 ° to the ring nozzle 9.
  • the separation charges 7 and the transfer charges 4 are not shown in this figure.
  • FIG. 3 shows the mode of operation of the arrangement according to the invention in a propellant charge lighter, which is located in a cartridge.
  • the pole piece of the propellant lighter At 13 is the pole piece of the propellant lighter. If a voltage is applied to this, the ignition charge 2 ignites. The ignition jet of this charge is conducted through the ignition gas guide space 3 to the tablet column 4 and ignites it. The burning tablet column 4 delays the time ring tablets 7 arranged in the cavity 8 are ignited. Depending on the state of the ambient pressure that is already building up in the entire cartridge case, there is a pressure difference between the cavity 8 and the pressure space 14 located outside the ignition guide tube 5, in which the main charge 15 also passes through the tablet column 4 via bores (not shown here) through the Ignition guide tube 5 was ignited.
  • the composition of the annular tablets 7 and by a specific optimization of the gap of the nozzle 9 as regards, for example, width and geometric shape of the separation of the igniter tube in the region of the nozzle both in time and in its, by an appropriate choice of Strength can be adjusted.
  • FIG. 4 shows the pressure curve over time in the high-pressure chamber 8 of the propellant charge igniter (a) and in the propellant charge powder chamber (b).
  • the same pressure develops in the high-pressure chamber 8 as in the entire interior formed by the ignition guide tube. Only after a delay time .DELTA.t 2 do the tablets 7 in the high-pressure chamber 8 ignite.
  • a high-pressure surge dp occurs, which leads to a strong, sudden outflow of the combustion products through the ring nozzle 9.
  • the combustible tube 5 is weakened at this point and is supported in its combustion by the progressive propellant charge powder conversion and thus separated.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighters Containing Fuel (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Air Bags (AREA)
EP83105851A 1982-07-14 1983-06-15 Amorce partiellement combustible pour charge propulsive Expired - Lifetime EP0100840B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3226269A DE3226269C2 (de) 1982-07-14 1982-07-14 Teilverbrennbarer Treibladungsanzünder
DE3226269 1982-07-14

Publications (3)

Publication Number Publication Date
EP0100840A2 true EP0100840A2 (fr) 1984-02-22
EP0100840A3 EP0100840A3 (en) 1988-05-11
EP0100840B1 EP0100840B1 (fr) 1990-04-18

Family

ID=6168375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105851A Expired - Lifetime EP0100840B1 (fr) 1982-07-14 1983-06-15 Amorce partiellement combustible pour charge propulsive

Country Status (3)

Country Link
US (1) US4492167A (fr)
EP (1) EP0100840B1 (fr)
DE (2) DE3226269C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600385A1 (fr) * 1992-12-01 1994-06-08 Dynamit Nobel Aktiengesellschaft Allumeur pour charge propulsive
WO2001071274A1 (fr) 2000-03-23 2001-09-27 Giat Industries Tube allumeur pour une munition d'artillerie

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409017A1 (de) * 1984-03-13 1985-09-26 Rheinmetall GmbH, 4000 Düsseldorf Patronierte munition fuer rohrwaffen
DE3416736C2 (de) * 1984-05-07 1986-10-02 Dynamit Nobel Ag, 5210 Troisdorf Treibladungsanzünder
DE3502166A1 (de) * 1985-01-23 1986-07-24 Dynamit Nobel Ag, 5210 Troisdorf Teilverbrennbarer treibladungsanzuender
DE3829657A1 (de) * 1988-09-01 1990-03-08 Dynamit Nobel Ag Treibladungsanzuender mit vom treibladungspulver initiierter abtrennladung
AT396303B (de) * 1990-02-27 1993-08-25 Steyr Daimler Puch Ag Patrone
DE102009052578B4 (de) * 2008-11-13 2021-09-30 Ruag Ammotec Gmbh Pyrotechnischer Anzünder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB605135A (en) * 1945-12-14 1948-07-16 John Norman Pring Improvements in or relating to magazines or containers for cartridge priming compositions
DE2648137A1 (de) * 1976-10-23 1978-04-27 Dynamit Nobel Ag Treibladungsanzuender

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392673A (en) * 1967-05-29 1968-07-16 Navy Usa Consumable pyrogen igniter
FR1575687A (fr) * 1968-04-10 1969-07-25
DE2355255C2 (de) * 1973-11-05 1984-05-10 Gianni Verga Milano Casati Anzündvorrichtung für Artillerietreibladungen
SE396246B (sv) * 1974-11-29 1977-09-12 Bofors Ab Tenddon
FR2343987A1 (fr) * 1976-03-08 1977-10-07 France Etat Tube allumeur, notamment pour munition d'artillerie

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB605135A (en) * 1945-12-14 1948-07-16 John Norman Pring Improvements in or relating to magazines or containers for cartridge priming compositions
DE2648137A1 (de) * 1976-10-23 1978-04-27 Dynamit Nobel Ag Treibladungsanzuender

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600385A1 (fr) * 1992-12-01 1994-06-08 Dynamit Nobel Aktiengesellschaft Allumeur pour charge propulsive
WO2001071274A1 (fr) 2000-03-23 2001-09-27 Giat Industries Tube allumeur pour une munition d'artillerie
FR2806789A1 (fr) 2000-03-23 2001-09-28 Giat Ind Sa Tube allumeur pour une munition d'artillerie
US6543363B2 (en) 2000-03-23 2003-04-08 Giat Industries Primer tube for artillery ammunition

Also Published As

Publication number Publication date
EP0100840A3 (en) 1988-05-11
DE3226269C2 (de) 1986-04-17
US4492167A (en) 1985-01-08
EP0100840B1 (fr) 1990-04-18
DE3226269A1 (de) 1984-02-16
DE3381474D1 (de) 1990-05-23

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