EP0153457B1 - Gas generator for generating a gas pressure - Google Patents

Gas generator for generating a gas pressure Download PDF

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Publication number
EP0153457B1
EP0153457B1 EP84114066A EP84114066A EP0153457B1 EP 0153457 B1 EP0153457 B1 EP 0153457B1 EP 84114066 A EP84114066 A EP 84114066A EP 84114066 A EP84114066 A EP 84114066A EP 0153457 B1 EP0153457 B1 EP 0153457B1
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EP
European Patent Office
Prior art keywords
gas generator
tubes
gas
ignition
generator according
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Expired
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EP84114066A
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German (de)
French (fr)
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EP0153457A1 (en
Inventor
Albert Ing. Grad. Dietrich
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Dornier GmbH
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Dornier GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/087—Flexible or deformable blasting cartridges, e.g. bags or hoses for slurries
    • F42B3/093—Flexible or deformable blasting cartridges, e.g. bags or hoses for slurries in mat or tape form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure

Definitions

  • the invention relates to a gas generator for generating a gas pressure in an expansion chamber in order to expel ejection ammunition from a carrier container, using explosives with a detonator.
  • Such hoses filled with a pyrotechnic substance so-called explosive or ignition hoses or shooting lines, are known from rock blasting technology. They consist of a plastic tube that is filled with such a substance or so that a thin, continuous layer is applied to the inside wall (ignition tube). The hoses are sealed at one end and gagged at the other end. Adhesive labels with corresponding time step numbers are provided to determine the burning time, and adhesive tapes or clips are provided to fix the wound ignition hose.
  • linear ignition system is also known from the blasting technology, which is one or more detonating cords which were of different locations, e.g. B. a first plastic sheath, a fiberglass braid arranged above and a second plastic sheath applied over this, surrounded and secured against external influences.
  • detonating cords which were of different locations, e.g. B. a first plastic sheath, a fiberglass braid arranged above and a second plastic sheath applied over this, surrounded and secured against external influences.
  • These linear ignition systems are used as igniters for gas generators for inflating air bags, for igniting rocket engines and as ignition aids for large-caliber military ammunition.
  • a gas pressure system is known from US Pat. No. 3,865,034, which is arranged inside a warhead shell and is used to eject ammunition stacked therein.
  • a comparatively small-caliber blasting device for a charge for generating compressed gas is arranged concentrically in a perforated chamber tube with end closures coaxial with the longitudinal axis of the warhead, which extends over the total number of ammunition stacks. The latter charge completely occupies the annular space between the chamber tube jacket and the igniter.
  • the blasting device itself is composed of an initial charge in the form of a full cylinder with a full-surface jacket made of inert material, a concentric booster charge arranged in the form of a hollow cylinder and a continuous sleeve for receiving the booster charge and coated initial charge.
  • the chamber for generating compressed gas is in turn surrounded by an expansion chamber with a circular cross section for cooling the compressed gases.
  • a perforated, dimensionally stable tube is the outer chamber limitation in the expansion chamber.
  • the latter is encased by a deformable metal sleeve and an inflatable rubber skin with the sleeve contour of the corresponding inner contour, through which the compressed gas generated after flowing through the expansion chamber for ejection purposes for all ammunition purposes works.
  • the object of the invention is to improve the pressure build-up in an expansion chamber during the production of compressed gas with a gas generator so that it proceeds in a graduated manner over time when ejection of submunition from a carrier container, so that no excessive load is transmitted to the carrier container.
  • the advantage of the invention is that by uniform or different arrangement of ignition hoses as delay and / or connecting elements with the same or different lengths between the individual detonation hoses and by an initial ignition originating from the detonator and a subsequent ignition sequence of the detonation hoses downstream of the detonation hoses, a controlled and thereby a pressure build-up in the expansion chamber that occurs in a graduated manner over time takes place.
  • the explosive hoses which can also be arranged in the same or different lengths and can be provided with the same or different charges, are not ignited simultaneously and spontaneously, but instead are stepped continuously and in time.
  • the pressure build-up in the expansion chamber can be variably controlled with such an arrangement of ignition and detonating hoses.
  • An additional effect of the controlled pressure increase can be achieved by arranging several independent, series, parallel or mixed arrangement of the ignition hoses as delay elements and detonation hoses. This also increases the reliability of ignition in multi-chamber ejection systems.
  • FIG. 1 shows a schematic representation of an arrangement of a gas generator 1 in an expansion chamber 2.
  • the gas generator 1 consists of a series of detonation hoses 3 and ignition hoses 4 arranged one behind the other (in series), which are alternately connected to one another by connecting pieces 5.
  • the detonation and ignition hoses 3 and 4 are divided into the same or different lengths L t , L 2 , L 3 , L 4 and L 5 , Ls, L 7 , L 8 , it being possible for the detonation hoses 3 to be provided with the same or different charges .
  • the ignition hoses 4 act as delay and / or connecting elements between the individual detonation hoses 3.
  • the initial ignition takes place by an igniter 6, which is arranged at the end of the gas generator 1 and is connected to an ignition hose 4.
  • the sequence of the detonation and ignition hoses 3 and 4 arranged alternately one behind the other can be split into two (see in FIG. 1) or more (not shown in the figure) strands parallel to one another at the end opposite the igniter 6. Of course, such a split can also be made between a continuous row of detonation or ignition hoses 3 and 4 or alternately.
  • the gas generator 1 is delimited by a wall 7.
  • the blasting and ignition hoses 3 and 4 arranged laterally in relation to one another in the gas generator 1 and in the expansion chamber 2 are shielded from one another by partition walls 12 in order to prevent mutual action of pressure waves.
  • the shielding can, however, also be provided by a pressure-proof casing (14) of the explosive hoses 3 themselves (FIG. 1a).
  • FIG. 2 schematically represents an embodiment in which a gas generator 1 is arranged in two adjacent expansion chambers 2.
  • the gas generators 1 likewise consist of a series of explosive hoses 3 arranged one behind the other and connected to one another by connecting pieces 5, with the same or different lengths L 1 ' L 2 , L 3 , L 4 and charges and in the same or different lengths L5 , L6 , L7 , L 8 divided ignition hoses 4.
  • the expansion chambers 2 are separated from one another by a wall 7. When the gas generator 1 is ignited, the compressed gas generated thereby acts on both sides of the wall 7 (see directional arrows). As can also be seen from FIG.
  • both gas generators 1 are split on one side (in the figures on the right) into two parallel strands.
  • both gas generators 7 are connected to one another by ignition hoses 8, 9 connected to the connecting pieces 5.
  • Such an ignition connection is also provided at the splitting point of the two gas generator strings 1.
  • the ignition hoses 8, 9 can be used for a redundant ignition of adjacent gas generators by corresponding arrangement to the strings of the gas generators 1.
  • the laterally adjacent detonation hoses 3 are mutually shielded by the wall 7 and partition walls 12 arranged between them.
  • FIG. 3 shows a diagram 10, from which the ignition sequence of a gas generator 1 according to FIGS. 1 and 2 and the charge burned as a function of time can be seen for a z.
  • B constant or defined gas pressure in an expansion chamber 2.
  • the step-like course of the diagram 10 corresponds to the charge required for the desired gas pressure in the expansion chamber 2, which consists of the ignition sequence in milliseconds (msec) in the ignition tubes 4 and the burning off of the charge contained in the detonation tubes 3 in grams (g) and that increasing volume of the expansion chamber 2 results.

Description

Die Erfindung betrifft einen Gasgenerator zum Erzeugen eines Gasdruckes in einer Expansionskammer, um Ausstoßmunition aus einem Trägerbehälter auszustossen, wobei Sprengmittel mit Zünder verwendet werden.The invention relates to a gas generator for generating a gas pressure in an expansion chamber in order to expel ejection ammunition from a carrier container, using explosives with a detonator.

Aus der Felssprengtechnologie sind derartige mit einer pyrotechnischen Substanz gefüllte Schläuche, sogenannte Spreng- oder Zündschläuche oder Schießleitungen bekannt. Sie bestehen aus einem Plastikschlauch, der mit einer derartigen Substanz gefüllt oder damit an dessen Innenwand in einer dünnen durchlaufenden Schicht beaufschlagt ist (Zündschlauch). Die Schläuche sind an einem Ende versiegelt und am anderen Ende mit einem angewürgten Zeitzünder versehen. Zur Bestimmung der Brenndauer sind Klebe-Etikette mit entsprechenden Zeitstufen-Nummern und zur Fixierung des gewickelten Zündschlauches Klebebänder oder Klammern vorgesehen.Such hoses filled with a pyrotechnic substance, so-called explosive or ignition hoses or shooting lines, are known from rock blasting technology. They consist of a plastic tube that is filled with such a substance or so that a thin, continuous layer is applied to the inside wall (ignition tube). The hoses are sealed at one end and gagged at the other end. Adhesive labels with corresponding time step numbers are provided to determine the burning time, and adhesive tapes or clips are provided to fix the wound ignition hose.

Aus der Sprengtechnologie ist auch noch eine andere Art von Linearzündsystemen bekannt, bei welchen es sich um eine oder mehrere Zündschnüre handelt, welche von verschiedenen lagen, z. B. einer ersten Kunststoffhülle, einem darüber angeordneten Fiberglasgeflecht und einer über diesem aufgebrachten zweiten Kunststoffhülle, umgeben und gegen äussere Einflüsse gesichert sind. Diese Linearzündsysteme sind als Zünder für Gasgeneratoren zum Aufblasen von Luftsäcken, zur Zündung von Raketentriebwerken und als Zündhilfen für Großkaliber militärischer Munition in Verwendung.Another type of linear ignition system is also known from the blasting technology, which is one or more detonating cords which were of different locations, e.g. B. a first plastic sheath, a fiberglass braid arranged above and a second plastic sheath applied over this, surrounded and secured against external influences. These linear ignition systems are used as igniters for gas generators for inflating air bags, for igniting rocket engines and as ignition aids for large-caliber military ammunition.

Für eine militärische Anwendung ist aus der US-PS-3 865 034 ein Gasdrucksystem bekannt, welches im Innern einer Gefechtskopfhülle angeordnet ist und zum Ausstoß von darin gestapelter Munition dient. Hierbei ist in einem zur Gefechtskopflängsachse koaxialen gelochten Kammerrohr mit stirnseitigen Verschlüssen, das sich über die Gesamtzahl der Munitionsstapel erstreckt, eine vergleichsweise kleinkalibrige Durchzündvorrichtung für eine Ladung zur Druckgaserzeugung konzentrisch angeordnet. Letztgenannte Ladung nimmt dabei den Ringraum zwischen Kammerrohrmantel und Durchzündvorrichtung gänzlich ein. Die Durchzündvorrichtung selbst ist zusammengesetzt aus einer Inifialladung von der Form eines Vollzylinders mit einem vollflächigen Mantel aus Inertstoff, einer konzentrischen zum letzteren angeordneten Verstärkerladung von der Form eines Hohlzylinders und einer durchgehenden Hülse zur Aufnahme der Verstärkerladung und ummantelten Initialladung. Die Kammer zur Druckgaserzeugung ist ihrerseits umgeben von einer im Querschnitt kreisförmigen Expansionskammer zur Abkühlung der Druckgase. Ebenso wie bei der Druckkammer stellt bei der Expansionskammer ein gelochtes formbeständiges Rohr die äussere iKammerbegrsnzung dar. Ummantelt ist letzteres von einer verformbaren Metallhülse und einer aufblasbaren Gummihaut mit der Hülsenkontur entsprechender Innenkontur, durch die das erzeugte Druckgas nach Durchströmung der Expansionskammer zu Ausstoßzwecken auf sämtliche Munitionsstapel zugleich wirkt.For a military application, a gas pressure system is known from US Pat. No. 3,865,034, which is arranged inside a warhead shell and is used to eject ammunition stacked therein. In this case, a comparatively small-caliber blasting device for a charge for generating compressed gas is arranged concentrically in a perforated chamber tube with end closures coaxial with the longitudinal axis of the warhead, which extends over the total number of ammunition stacks. The latter charge completely occupies the annular space between the chamber tube jacket and the igniter. The blasting device itself is composed of an initial charge in the form of a full cylinder with a full-surface jacket made of inert material, a concentric booster charge arranged in the form of a hollow cylinder and a continuous sleeve for receiving the booster charge and coated initial charge. The chamber for generating compressed gas is in turn surrounded by an expansion chamber with a circular cross section for cooling the compressed gases. As with the pressure chamber, a perforated, dimensionally stable tube is the outer chamber limitation in the expansion chamber. The latter is encased by a deformable metal sleeve and an inflatable rubber skin with the sleeve contour of the corresponding inner contour, through which the compressed gas generated after flowing through the expansion chamber for ejection purposes for all ammunition purposes works.

Alle diese bekannten druckgaserzeugenden Zündsysteme haben den Nachteil, dass die nach Zündung ihrer gaserzeugenden Substanz in ihren Brennkammern einen Abbrand aufweisen, bei welchem der Druckaufbau in der Expansionskammer schwer steuerbar ist. Das heisst, der Verlauf der Druckerzeugung ist bei diesen Zündsystemen über die Zeit erschwert und dadurch eine abgestufte Druckzunahme nahezu ausgeschlossen. Ausserdem haben diese Zündsysteme aufbaubedingte grosse Abmessungen, was eine Reduzierung des Nutzlastvolumens, z. B. bei Behältern für Munitionsausstoß bedingt.All these known compressed gas-generating ignition systems have the disadvantage that, after ignition of their gas-generating substance in their combustion chambers, they burn up, in which the pressure build-up in the expansion chamber is difficult to control. This means that the course of the pressure generation in these ignition systems is more difficult over time and a gradual increase in pressure is almost impossible. In addition, these ignition systems have large dimensions due to their construction, which means a reduction in the payload volume, e.g. B. conditional on containers for ammunition output.

Aufgabe der Erfindung ist, den Druckaufbau in einer Expansionskammer während der Druckgaserzeugung mit einem Gasgenerator so zu verbessern, dass er beim Ausstoß von Submunition aus einem Trägerbehälter über die Zeit in abgestufter Form abläuft, so dass auf den Trägerbehälter keine übermässige Belastung übertragen wird.The object of the invention is to improve the pressure build-up in an expansion chamber during the production of compressed gas with a gas generator so that it proceeds in a graduated manner over time when ejection of submunition from a carrier container, so that no excessive load is transmitted to the carrier container.

Erfindungsgemäß wird die gestellte Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Merkmalen der Unteransprüche.According to the invention, the object is achieved by the characterizing features of claim 1. Advantageous further developments result from the features of the subclaims.

Der Vorteil der Erfindung besteht darin, dass durch gleichmässige oder unterschiedliche Anordnung von Zündschläuchen als Verzögerungs- und/oder Verbindungselemente mit gleichen oder unterschiedlichen Längen zwischen den einzelnen Sprengschläuchen und durch eine vom Zünder ausgehende Initialzündung und folgende Zündfolge der den Zündschläuchen nachgeordneten Sprengschläuchen ein gesteuerter und dadurch ein über die Zeit in abgestufter Form vorhandener Druckaufbau in der Expansionskammer erfolgt.The advantage of the invention is that by uniform or different arrangement of ignition hoses as delay and / or connecting elements with the same or different lengths between the individual detonation hoses and by an initial ignition originating from the detonator and a subsequent ignition sequence of the detonation hoses downstream of the detonation hoses, a controlled and thereby a pressure build-up in the expansion chamber that occurs in a graduated manner over time takes place.

Die Sprengschläuche, welche gleichfalls in gleichen oder unterschiedlichen Längen, angeordnet und mit gleichen oder unterschiedlichen Ladungen versehen sein können, werden dadurch nicht gleichzeitig und spontan gezündet, sondern gesteuert fortlaufend und zeitlich abgestuft. Der Druckaufbau in der Expansionskammer ist mit einer derartigen Anordnung von Zünd- und Sprengschläuchen variabel steuerbar. Ein zusätzlicher Effekt der gesteuerten Druckzunahme ist durch Anordnung von mehreren voneinander unabhängigen, in Serie, Parallel- oder Mischanordnung der Zündschläuche als Verzögerungselemente und Sprengschläuche erzielbar. Auch wird damit die Zündsicherheit bei Mehrkammer-Ausstoßsystemen erhöht.The explosive hoses, which can also be arranged in the same or different lengths and can be provided with the same or different charges, are not ignited simultaneously and spontaneously, but instead are stepped continuously and in time. The pressure build-up in the expansion chamber can be variably controlled with such an arrangement of ignition and detonating hoses. An additional effect of the controlled pressure increase can be achieved by arranging several independent, series, parallel or mixed arrangement of the ignition hoses as delay elements and detonation hoses. This also increases the reliability of ignition in multi-chamber ejection systems.

Ein Ausführungsbeispiel ist folgend beschrieben und durch Skizzen erläutert.An exemplary embodiment is described below and explained by sketches.

Es zeigen:

  • Figur 1 die schematische Darstellung einer Anordnung eines Gasgenerators in einer Expansionskammer,
  • Figur 1a einen durch einen drucksicher ummantelten Sprengschlauch,
  • Figur 2 die schematische Darstellung einer Anordnung von Gasgeneratoren in benachbarten Expansionskammern,
  • Figur 3 ein Diagramm des Zündablaufes eines Gasgenerators und des dabei in einer Expansionskammer erzeugten Gasdruckes.
Show it:
  • FIG. 1 shows the schematic representation of an arrangement of a gas generator in an expansion chamber,
  • FIG. 1a shows an explosive hose encased in a pressure-resistant manner,
  • FIG. 2 shows the schematic representation of an arrangement of gas generators in adjacent expansion chambers,
  • Figure 3 is a diagram of the ignition sequence of a gas generator and the gas pressure generated thereby in an expansion chamber.

Aus Figur 1 ist eine schematische Darstellung einer Anordnung eines Gasgenerators 1 in einer Expansionskammer 2 ersichtlich. Der Gasgenerator 1 besteht aus einer Reihe von hintereinander (in Serie) angeordneten Sprengschläuchen 3 und Zündschläuchen 4, welche abwechselnd durch Verbindungsstücke 5 miteinander verbunden sind. Die Spreng- und Zündschläuche 3 und 4 sind in gleichen oder unterschiedlichen Längen Lt, L2, L3, L4 und L5, Ls, L7, L8 unterteilt, wobei die Sprengschläuche 3 mit gleichen oder unterschiedlichen Ladungen versehen sein können. Die Zündschläuche 4 wirken dabei als Verzögerungs- und/oder Verbindungselemente zwischen den einzelnen Sprengschläuchen 3. Die Initialzündung erfolgt durch einen Zünder 6, welcher am Ende des Gasgenerators 1 angeordnet und mit einem Zündschlauch 4 verbunden ist. Die Reihenfolge der abwechselnd hintereinander angeordneten Spreng- und Zündschläuche 3 und 4 kann am dem Zünder 6 entgegengesetzten Ende in zwei (siehe in Figur) oder mehreren (in der Figur nicht näher gezeigt) zueinander parallelen Strängen aufgespaltet sein. Selbstverständlich kann eine derartige Aufspaltung auch zwischen einer durchlaufenden Reihe von Spreng- oder Zündschläuchen 3 und 4 oder abwechselnd getroffen werden. Der Gasgenerator 1 ist von einer Wand 7 begrenzt. Die im Gasgenerator 1 und in der Expansionskammer 2 seitlich zueinander angeordneten Spreng-und Zündschläuche 3 und 4 sind, um eine gegenseitige Druckwelleneinwirkung zu verhindern, durch Trennwände 12 voneinander abgeschirmt. Die Abschirmung kann aber auch durch eine drucksichere Ummantelung (14) der Sprengschläuche 3 selbst vorgesehen werden (Figur 1a).FIG. 1 shows a schematic representation of an arrangement of a gas generator 1 in an expansion chamber 2. The gas generator 1 consists of a series of detonation hoses 3 and ignition hoses 4 arranged one behind the other (in series), which are alternately connected to one another by connecting pieces 5. The detonation and ignition hoses 3 and 4 are divided into the same or different lengths L t , L 2 , L 3 , L 4 and L 5 , Ls, L 7 , L 8 , it being possible for the detonation hoses 3 to be provided with the same or different charges . The ignition hoses 4 act as delay and / or connecting elements between the individual detonation hoses 3. The initial ignition takes place by an igniter 6, which is arranged at the end of the gas generator 1 and is connected to an ignition hose 4. The sequence of the detonation and ignition hoses 3 and 4 arranged alternately one behind the other can be split into two (see in FIG. 1) or more (not shown in the figure) strands parallel to one another at the end opposite the igniter 6. Of course, such a split can also be made between a continuous row of detonation or ignition hoses 3 and 4 or alternately. The gas generator 1 is delimited by a wall 7. The blasting and ignition hoses 3 and 4 arranged laterally in relation to one another in the gas generator 1 and in the expansion chamber 2 are shielded from one another by partition walls 12 in order to prevent mutual action of pressure waves. The shielding can, however, also be provided by a pressure-proof casing (14) of the explosive hoses 3 themselves (FIG. 1a).

Figur 2 stellt schematisch eine Ausführungsform dar, bei welcher in zwei benachbarten Expansionskammern 2, je ein Gasgenerator 1 angeordnet ist. Wie in Figur 1 beschrieben, bestehen die Gasgeneratoren 1 ebenfalls aus einer Reihe von hintereinander angeordneten und durch Verbindungsstücke 5 miteinander verbundenen Sprengschläuchen 3 mit gleichen oder unterschiedlichen Längen L1' L2, L3, L4 und Ladungen und in gleichen oder unterschiedlichen Längen L5, L6, L7, L8 unterteilten Zündschläuchen 4. Die Expansionskammern 2 sind durch eine Wand 7 voneinander getrennt. Bei Zündung des Gasgenerators 1 wirkt das dabei erzeugte Druckgas zu beiden Seiten der Wand 7 (siehe Richtungspfeile). Beide Gasgeneratoren 1 sind, wie auch aus Figur 1 ersichtlich, auf einer Seite (in den Figuren rechts) in zwei zueinander parallelen Strängen aufgespaltet. Um sicher zu stellen, dass die Zündung der einzelnen Sprengschläuche 3 in der erwünschten Weise erfolgt, sind beide Gasgeneratoren 7 durch an den Verbindungsstücken 5 angeschlossene Zündschläuche 8, 9 miteinander verbunden. Eine derartige Zündverbindung ist gleichfalls an der Aufspaltstelle der beiden Gasgeneratorstränge 1 vorgesehen. Die Zündschläuche 8, 9 sind durch entsprechende Anordnung zu den Strängen der Gasgeneratoren 1 für eine redundante Zündung benachbarter Gasgeneratoren anwendbar. Wie in Figur 1 gezeigt, sind die seitlich benachbarten Sprengschläuche 3 durch die Wand 7 und dazwischen angeordneten Trennwänden 12 gegenseitig abgeschirmt.FIG. 2 schematically represents an embodiment in which a gas generator 1 is arranged in two adjacent expansion chambers 2. As described in FIG. 1, the gas generators 1 likewise consist of a series of explosive hoses 3 arranged one behind the other and connected to one another by connecting pieces 5, with the same or different lengths L 1 ' L 2 , L 3 , L 4 and charges and in the same or different lengths L5 , L6 , L7 , L 8 divided ignition hoses 4. The expansion chambers 2 are separated from one another by a wall 7. When the gas generator 1 is ignited, the compressed gas generated thereby acts on both sides of the wall 7 (see directional arrows). As can also be seen from FIG. 1, both gas generators 1 are split on one side (in the figures on the right) into two parallel strands. In order to ensure that the ignition of the individual explosive hoses 3 takes place in the desired manner, both gas generators 7 are connected to one another by ignition hoses 8, 9 connected to the connecting pieces 5. Such an ignition connection is also provided at the splitting point of the two gas generator strings 1. The ignition hoses 8, 9 can be used for a redundant ignition of adjacent gas generators by corresponding arrangement to the strings of the gas generators 1. As shown in FIG. 1, the laterally adjacent detonation hoses 3 are mutually shielded by the wall 7 and partition walls 12 arranged between them.

Figur 3 zeigt ein Diagramm 10, aus welchem der Zündablauf eines Gasgenerators 1 gemäß Figuren 1 und 2 und der dabei in Abhängigkeit von der Zeit verbrannten Ladung ersichtlich ist für einen z. B. konstanten oder definiert verlaufenden Gasdruck in einer Expansionskammer 2.FIG. 3 shows a diagram 10, from which the ignition sequence of a gas generator 1 according to FIGS. 1 and 2 and the charge burned as a function of time can be seen for a z. B. constant or defined gas pressure in an expansion chamber 2.

Der stufenförmige Verlauf des Diagramms 10 entspricht dabei der benötigten Ladung für den gewünschten Gasdruck in der Expansionskammer 2, welcher aus dem Zündablauf in Millisekunden (msec) in den Zündschläuchen 4 und dem Abbrennen der in den Sprengschläuchen 3 enthaltenen Ladung in Gramm (g) und dem sich vergrössernden Volumen der Expansionskammer 2 resultiert. Das heisst, dass durch die erfindungsgemässe Anordnung von gleichen oder unterschiedlichen Längen von Zündschläuchen 4 zwischen einzelnen Sprengschläuchen 3 der Gasdruck in einer Expansionskammer 2 variabel und abgestuft steuerbar ist.The step-like course of the diagram 10 corresponds to the charge required for the desired gas pressure in the expansion chamber 2, which consists of the ignition sequence in milliseconds (msec) in the ignition tubes 4 and the burning off of the charge contained in the detonation tubes 3 in grams (g) and that increasing volume of the expansion chamber 2 results. This means that the inventive arrangement of identical or different lengths of ignition hoses 4 between individual detonation hoses 3 allows the gas pressure in an expansion chamber 2 to be controlled in a variable and graduated manner.

Claims (7)

1. Gas generator for generating a gas pressure in an expansion chamber for ejecting ejector munition from a carrier container, using explosives with fuses, characterised in that explosives in the form of explosive tubes (3) known per se which are fitted with coverings and protected against external influences and fuse tubes (4) connected thereto by means of connecting elements (5) are arranged alternately one behind the other at the same or in different lengths (L, to LB) and shielded from one another against the action of pressure.
2. Gas generator according to claim 1, characterised in that the shields provided are partitions (12).
3. Gas generator according to claim 1, characterised in that the shield provided is a pressure-proof sheath (14) round the explosive tubes (3).
4. Gas generator according to claims 1 to 3, characterised in that several independent explosive tubes (3) of the same or different lengths (L1 to L4) containing charges and fuse tubes (4) of the same or different lengths (L5 to L8) connected together by connecting elements (5) are provided.
5. Gas generator according to one of the claims 1 to 4, characterised in that the explosive tubes (3) with connecting elements (5) and fuse tubes (4) are arranged parallel to one another.
6. Gas generator according to one of the claims '1 to 4, characterised in that the explosive tubes (3) with connecting elements (5) and fuse tubes (4) are arranged in a mixed arrangement.
7. Gas generator according to one of the claims 1 to 6, characterised in that the fuse tubes (4) ignite adjacent gas generators redundantly.
EP84114066A 1984-02-01 1984-11-22 Gas generator for generating a gas pressure Expired EP0153457B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3403352A DE3403352C1 (en) 1984-02-01 1984-02-01 Gas generator for generating a gas pressure in an expansion chamber
DE3403352 1984-02-01

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EP0153457A1 EP0153457A1 (en) 1985-09-04
EP0153457B1 true EP0153457B1 (en) 1988-09-21

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EP84114066A Expired EP0153457B1 (en) 1984-02-01 1984-11-22 Gas generator for generating a gas pressure

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US (1) US4690060A (en)
EP (1) EP0153457B1 (en)
DE (2) DE3403352C1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5231928A (en) * 1990-08-24 1993-08-03 Talley Defense Systems, Inc. Munition release system
US5225627A (en) * 1990-08-24 1993-07-06 Talley Defense Systems, Incorporated Tailored munition ejection system
US5739462A (en) * 1995-06-27 1998-04-14 The Walt Disney Company Method and apparatus for creating pyrotechnic effects
DE20303836U1 (en) * 2003-03-11 2003-07-24 Trw Airbag Sys Gmbh Inflator for a vehicle occupant restraint system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089418A (en) * 1960-11-02 1963-05-14 Stiefel Ludwig Gas generator for guided missiles
US3726223A (en) * 1970-02-16 1973-04-10 Us Navy Adaptive warhead
US3865034A (en) * 1971-12-20 1975-02-11 Us Air Force Submissible air-to-surface warhead with propellant-diaphragm deployment mechanism
US3901530A (en) * 1973-08-08 1975-08-26 Allied Chem Multiple mini hybrid with direct bag connection
US4358998A (en) * 1980-02-04 1982-11-16 Thiokol Corporation Igniter for a pyrotechnic gas bag inflator
DE3026159C2 (en) * 1980-07-10 1984-05-30 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Gas pressure system for ejecting ammunition from a warhead or similar ammunition container

Also Published As

Publication number Publication date
DE3403352C1 (en) 1985-06-05
US4690060A (en) 1987-09-01
EP0153457A1 (en) 1985-09-04
DE3474207D1 (en) 1988-10-27

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