EP0082970A2 - Tube de guidage des flammes pour un allumeur d'une charge propulsive - Google Patents

Tube de guidage des flammes pour un allumeur d'une charge propulsive Download PDF

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Publication number
EP0082970A2
EP0082970A2 EP82111057A EP82111057A EP0082970A2 EP 0082970 A2 EP0082970 A2 EP 0082970A2 EP 82111057 A EP82111057 A EP 82111057A EP 82111057 A EP82111057 A EP 82111057A EP 0082970 A2 EP0082970 A2 EP 0082970A2
Authority
EP
European Patent Office
Prior art keywords
guide tube
flame guide
ignition
beads
openings
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.)
Withdrawn
Application number
EP82111057A
Other languages
German (de)
English (en)
Other versions
EP0082970A3 (fr
Inventor
Uwe Brede
Günter Hübsch
Rudolf Stahlmann
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.)
Huels Troisdorf AG
Dynamit Nobel AG
Original Assignee
Huels Troisdorf AG
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 Huels Troisdorf AG, Dynamit Nobel AG filed Critical Huels Troisdorf AG
Publication of EP0082970A2 publication Critical patent/EP0082970A2/fr
Publication of EP0082970A3 publication Critical patent/EP0082970A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to a flame guide tube in propellant charge igniter, which is mainly used to ignite large amounts of powder, such as occur, for example, in large-caliber ammunition.
  • propellant lighters contain a known ignition system consisting of a mechanical or electrical primer and a transfer charge, which are located at one end of a flame guide tube, around which an ignition amplifier charge, e.g. is arranged in the form of an annular tablet column.
  • the ignition amplifier charge is located within an ignition guide housing, which is provided on the side with openings for the ignition gases of the ignition amplifier charge to escape.
  • the combustion gases flow in after the transfer charge, which may be located in a pressure chamber, is ignited the flame guide tube, which is laterally provided with radial openings for the ignition flame to escape.
  • Either an ignition booster charge or a propellant charge can be ignited directly by the gases flowing out through these openings.
  • This known arrangement has the disadvantage that the propellant charge or the booster charge is ignited earlier in the area which is closer to the transfer charge than in the areas which are further away, so that no uniform distribution of the flame front of the ignited charge results over its axial extent .
  • Such a spatially and temporally different distribution of the pilot flame front is undesirable.
  • considerable reflections of the axial pressure wave emanating from the transfer charge occur in this known arrangement within the flame guide tube, which reflections can lead to standing pressure waves. Due to such standing pressure waves, the timing and location uneven ignition is e.g. an ignition amplifier charge even further amplified.
  • Flarsmleitrohr for preferably the above-mentioned arrangement, which is characterized in that, starting from the openings in the flame guide tube, such beads are arranged axially, which protrude into the interior of the flame guide tube and whose depth in the direction of the end of the flame guide tube decreases.
  • the flame guide tube according to the invention is particularly suitable for those propellant lighters with which large-caliber ammunition is to be fired.
  • propellant igniters have an ignition guide housing provided with radial outlet openings, in which an ignition booster charge is arranged radially around the flame guide tube located coaxially inside.
  • the beads beginning at the openings of the flame guide tube protrude as elongated depressions into the flame guide tube. They become flatter towards the end of the flame guide tube, the end of the flame guide tube being understood to be the side facing away from the ignition system.
  • the axial length of these recesses depends, among other things. on the diameter of the flame guide tube, the size of the lateral openings in the flame guide tube and the flow rate of the flame gases of the booster charge. In general, the length of the beads is about half to twice the diameter of the flame guide tube. At their ends, i.e. on the side facing away from the ignition system, the bead merges into the wall of the flame guide tube.
  • the beads can have the shape of a conic section; however, they can also be tab-shaped and at their beginning, ie at their lowest point in the area of the lateral openings, be separated from the wall of the flame guide tube so that they protrude there as tongues into the flame guide tube.
  • the angle which the beads or tabs form with the jacket of the flame guide tube is the smallest at those beads which are closest to the ignition system, so that there the beads or tabs protrude only slightly into the interior of the flame guide tube. In a preferred embodiment, this angle becomes increasingly larger towards the end of the flame guide tube, so that the beads at the end of the flame guide tube of constant length protrude furthest inside the flame guide tube.
  • the lateral openings on the flame guide tubes with the adjoining beads are preferably arranged radially. They are then in a cross-sectional plane of the flame guide tube. In such a plane, two or more openings are then arranged in a ring over the circumference of the flame guide tube. According to the invention, it is sufficient if there is a single such ring of openings with the adjoining beads. However, it is expedient to arrange two or more such opening rings in the flame guide tube; the associated beads should protrude the same depth into the tube for each opening ring. The beads on the last opening ring before the end of the flame guide tube can then protrude into the interior of the flame guide tube to such an extent that they completely fill its cross section.
  • the depth with which the beads protrude into the flame guide tube mainly depends on the flow rate and the composition of the ignition gases. It also depends on whether only one or two or more opening rings are arranged along the length of the flame guide tube.
  • the end of the flame guide tube be conical so that the tip of this cone points towards the ignition system.
  • the cone angle aligns again mainly based on the flow velocity and the sound velocity of the hot ignition gases. This cone has the task of eliminating the reflections of the incoming pressure front of the ignition gases by interference.
  • FIG. 1 shows a longitudinal section through a propellant lighter with a flame guide tube according to the invention.
  • an ignition guide housing 4 there is an ignition booster charge 5 which is connected to a flame guide tube 1.
  • the booster charge 6 is arranged between flame guide tube 1 and the convertible dun g of Zünd Resultssgephaseuses 4.
  • the wall of the ignition guide housing 4 contains 6 openings in the area of the booster charge, which openings are not shown here.
  • Openings 2 are provided in the flame guide tube 1 and are located radially on a cross-sectional area of the flame guide tube 1.
  • a pair of such openings 2 is drawn in a cross-sectional area; however, several such openings can also be present in a cross-sectional area.
  • FIGS. 2 and 3 show a section through the plane A-B.
  • FIGS. 2 and 3 show a section through the plane A-B.
  • FIGS. 2 and 3 show two possible embodiments for the geometrical shape of the beads; it is only important that they protrude into the interior of the flame guide tube and are formed as depressions which become increasingly flatter towards the end of the flame guide tube 1.
  • the end of the flame guide tube 1 is designed as a cone 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Lighters Containing Fuel (AREA)
EP82111057A 1981-12-28 1982-11-30 Tube de guidage des flammes pour un allumeur d'une charge propulsive Withdrawn EP0082970A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3151673 1981-12-28
DE19813151673 DE3151673A1 (de) 1981-12-28 1981-12-28 Flammleitrohr fuer treibladungsanzuender

Publications (2)

Publication Number Publication Date
EP0082970A2 true EP0082970A2 (fr) 1983-07-06
EP0082970A3 EP0082970A3 (fr) 1984-07-25

Family

ID=6149899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111057A Withdrawn EP0082970A3 (fr) 1981-12-28 1982-11-30 Tube de guidage des flammes pour un allumeur d'une charge propulsive

Country Status (5)

Country Link
US (1) US4495866A (fr)
EP (1) EP0082970A3 (fr)
AU (1) AU9186582A (fr)
CA (1) CA1207187A (fr)
DE (1) DE3151673A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160625A (en) * 1984-05-12 1985-12-24 Diehl Gmbh & Co A propelling charge for large-calibre weapons
EP0428074A2 (fr) * 1989-11-16 1991-05-22 DIEHL GMBH & CO. Allumeur pour charge propulsive
DE102009052753B4 (de) 2008-11-13 2022-01-20 Ruag Ammotec Gmbh Pyrotechnischer Anzünder

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510446A1 (de) * 1985-03-22 1986-09-25 Nico-Pyrotechnik Hanns-Jürgen Diederichs GmbH & Co KG, 2077 Trittau Treibsatz zur bodensogreduzierung
US5174106A (en) * 1990-08-24 1992-12-29 Talley Defense Systems, Inc. Secondary ignition system
US5675115A (en) * 1996-04-03 1997-10-07 The United States Of America As Represented By The Secretary Of The Army Ignition tube for electrothermal chemical combustion
US5927312A (en) * 1998-02-27 1999-07-27 Dryden; Paul E. Method and apparatus for extinguishing combustion within combustible tubing
US7073447B2 (en) * 2003-02-12 2006-07-11 Bae Systems Land & Armaments L.P. Electro-thermal chemical igniter and connector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL288972A (fr) *
FR813397A (fr) * 1935-05-31 1937-05-31 Anciens Ets Skoda Disposition des charges de propulsion des armes à feu
US3224373A (en) * 1963-05-01 1965-12-21 Aerojet General Co Igniter device for solid body of pyrotechnic material

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA484990A (fr) * 1952-07-22 Dennistoun Burney Charles Etuis de cartouches pour munitions
US1240859A (en) * 1916-09-23 1917-09-25 Gilbert F Lallman Ammunition-primer.
US2419949A (en) * 1944-02-07 1947-05-06 Edwin J Hottinger Device for securing a propellent charge to an artillery primer
US2455380A (en) * 1945-05-07 1948-12-07 Leo T Meister Method of manufacturing primers
US2789043A (en) * 1953-04-30 1957-04-16 Ici Ltd Blasting charge composition
CH328117A (it) * 1953-11-19 1958-02-28 Verga Casati Gianni Complesso congegno di innesco-cannello per l'accensione di un mezzo esplodente, segnatamente un bossolo di artiglieria
US3332353A (en) * 1959-03-03 1967-07-25 Lohr A Burkardt Auxiliary igniter and sustainer
DE1821223U (de) * 1960-05-13 1960-11-03 Dynamit Nobel Ag Zusatzanfeuerung fuer geschosstreibladungen.
US3906720A (en) * 1965-01-07 1975-09-23 Aerojet General Co Igniter assembly for rocket motors
US3393639A (en) * 1967-03-10 1968-07-23 Thiokol Chemical Corp Pyrotechnic igniter assembly
FR1575687A (fr) * 1968-04-10 1969-07-25
SE396246B (sv) * 1974-11-29 1977-09-12 Bofors Ab Tenddon
BE831139A (fr) * 1975-07-08 1975-11-03 Chambre d'amorce pour cartouche
FR2343987A1 (fr) * 1976-03-08 1977-10-07 France Etat Tube allumeur, notamment pour munition d'artillerie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL288972A (fr) *
FR813397A (fr) * 1935-05-31 1937-05-31 Anciens Ets Skoda Disposition des charges de propulsion des armes à feu
US3224373A (en) * 1963-05-01 1965-12-21 Aerojet General Co Igniter device for solid body of pyrotechnic material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160625A (en) * 1984-05-12 1985-12-24 Diehl Gmbh & Co A propelling charge for large-calibre weapons
EP0428074A2 (fr) * 1989-11-16 1991-05-22 DIEHL GMBH & CO. Allumeur pour charge propulsive
EP0428074A3 (en) * 1989-11-16 1992-08-26 Diehl Gmbh & Co. Igniter for propulsive charge
DE102009052753B4 (de) 2008-11-13 2022-01-20 Ruag Ammotec Gmbh Pyrotechnischer Anzünder

Also Published As

Publication number Publication date
US4495866A (en) 1985-01-29
CA1207187A (fr) 1986-07-08
DE3151673A1 (de) 1983-07-07
EP0082970A3 (fr) 1984-07-25
AU9186582A (en) 1983-07-07

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): BE DE FR GB IT NL SE

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18D Application deemed to be withdrawn

Effective date: 19870109

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STAHLMANN, RUDOLF

Inventor name: HUEBSCH, GUENTER

Inventor name: BREDE, UWE