EP0255515B1 - Smoke-producing projectile - Google Patents

Smoke-producing projectile Download PDF

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Publication number
EP0255515B1
EP0255515B1 EP86901835A EP86901835A EP0255515B1 EP 0255515 B1 EP0255515 B1 EP 0255515B1 EP 86901835 A EP86901835 A EP 86901835A EP 86901835 A EP86901835 A EP 86901835A EP 0255515 B1 EP0255515 B1 EP 0255515B1
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EP
European Patent Office
Prior art keywords
smoke
charge
propulsive
chamber
fact
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
Application number
EP86901835A
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German (de)
French (fr)
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EP0255515A1 (en
Inventor
Willi Lübbers
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.)
Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG
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Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG
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Priority to AT86901835T priority Critical patent/ATE44819T1/en
Publication of EP0255515A1 publication Critical patent/EP0255515A1/en
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Publication of EP0255515B1 publication Critical patent/EP0255515B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/145—Cartridges, i.e. cases with charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances
    • F42B5/15—Cartridges, i.e. cases with charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances for creating a screening or decoy effect, e.g. using radar chaff or infrared material
    • F42B5/155—Smoke-pot projectors, e.g. arranged on vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile

Definitions

  • the invention relates to a smoke nozzle according to the preamble of patent claim 1.
  • Mist projectors of the type specified in the introduction are known from DE-A-1578348. They serve primarily for the self-protection of vehicles of all kinds, in particular also of battle tanks, and are therefore carried by these vehicles and shot down from throwing cups arranged on the outside of the vehicle.
  • Conventional throwing cups which are widespread in large quantities, are designed for a maximum gas pressure of approximately 13.5 bar, so that only a propellant charge consisting essentially of black powder can be used for ejecting the smoke throwing body, which generates a correspondingly low gas pressure.
  • a propellant charge consisting essentially of black powder
  • the black powder propellant charges that have been customary to date also have the disadvantage that they heavily contaminate the electrical contact connections for the ignition of the smoke projectors.
  • the invention has for its object to provide an improved smoke ejection body, with which, faster than with conventional smoke ejection bodies, a safe self-protection can be generated and when it is ejected, contact contamination of the ejection cup impairing operational safety can be avoided.
  • Fig. 1 shows a longitudinal section of a smoke ejector 1, which comprises a can 10, preferably manufactured in the deep-drawing process, in which the fog charge 12 is pressed.
  • the box 10 is closed by a cover 14 which has on its periphery two contact rings 13 separated from one another by an insulating ring 15.
  • the throwing cup not shown here, which consists essentially of a cylindrical jacket and a bottom, has resilient and insulated contact pins mounted in the throwing cup jacket at the level of the said contact rings, via which a voltage is applied when the mist launcher 1 is fired.
  • An ignition charge 19 in the form of an electric squib is applied to this voltage via electrical lines 19a connected to the contact rings 13 (FIG. 1, FIG. 2).
  • the conventional black powder propellant charge is also ignited in this way and generates 1 propellant charge gases for ejecting the throwing body, the pressure level of which does not exceed the load capacity of the throwing cup.
  • Conventional black powder propellants however, contaminate the contact means very heavily and therefore impair operational safety.
  • the invention aims to improve the self-protection by throwing smoke throwing bodies with a larger fog load, without exceeding the permissible pressure level with greatly increased operational reliability. It enables this by creating a new type of drive, which will be described in more detail below.
  • the invention ensures that the throwing cup is practical despite the acceleration of the smoke body until it is finally ejected, a constant pressure level remains within the maximum pressure load capacity of the throwing cup, as a result of which the smoke ejection body to be ejected is constantly accelerated.
  • the throwing body 1 designed according to the invention has a high-pressure-resistant propellant charge chamber 20, in which a high-calorie, low-smoke powder, e.g. B.
  • a nitroglycerin powder 21 is arranged as a propellant charge, which is ignited by the primer 19 electrically.
  • the propellant charge 20 inserted into the cover 14 of the mist-casting body 1 consists of an essentially pot-shaped housing 20d, which is closed with a screw-in cover 20a.
  • a capillary bore 20b, 20c is arranged in each of the two end faces of the propellant charge chamber 20 and is provided with a cover 18a, 18b, e.g. B. a self-adhesive film made of metal or plastic are covered. This cover prevents moisture from entering the propellant charge 21.
  • the propellant charge 21 After ignition of the propellant charge 21 by electrical ignition of the primer charge 19 via the contact ge 13 and the connecting wires 19a builds up by implementing the propellant powder 21 in the propellant chamber 20, a comparatively high pressure in the order of about 1000 bar.
  • the high-tension propellant gas formed in the propellant charge chamber 20 enters the bore 20b, tears the cover 18b and then enters an annular trench-shaped depression, which is delimited by the outer wall of the discharge cup and an outstanding support dome in its center, on which the ready-to-fire mist launcher 1 rests becomes.
  • the high-tension propellant gases are throttled in such a way that only a pressure level which does not exceed its maximum load capacity is established in the throwing cup.
  • the bore 18b is expediently arranged at an angle, and preferably at an angle a of 18 ° to 25 °, preferably 20 ° to the longitudinal axis 40 (FIG. 4) of the propellant charge chamber 20, in order to get the propellant charge gases into the annular circumferential recess of the throwing cup, not shown allow.
  • the diameter of the bore 20b is between 1 mm and 1.4 mm. In a particularly advantageous embodiment of the invention, the diameter of the bore 20b is 1.2 mm.
  • a capillary bore 20c is also arranged in the end face of the propellant charge chamber 20 facing the fog charge 12 and is initially also closed with a cover 18a for storage purposes. After the propellant charge 21 has been ignited, the hot propellant charge gases also enter the bore 20c, penetrate the cover 18a and then ignite the mist charge 12 in an area 12a adjacent to the bore 20c, in which the mist charge 12 surrounds a depression 12b.
  • a high pressure builds up between the fog charge 12 and the lid 14 of the smoke nozzle body 1 which closes the can 10, which ultimately leads to the thread 14a with which the lid 14 is attached to the smoke nozzle body is, begins to yield and finally tears out, so that an annular gap is formed between the cover 14 and the cross-section of the muffling body 1 closed by this, through which the pent-up fog can emerge.
  • a dense fog curtain which provides initial protection, is generated during the flight of the smoke ejection body 1 by dragging the individual smoke ejection bodies 1 in a cone-shaped manner.
  • the mist generated from the burning mist load 12 can emerge undisturbed through openings 10a which are evenly distributed over the circumference of the nebulizer body, so that a mist shield is formed which quickly provides privacy .
  • the tearing out of the thread 14a and the detachment of the cover 14 are favored in that the part of the cover 14 which surrounds the high-pressure-resistant propellant charge chamber 20, which is made of steel, and in particular also the external thread 14a carried by it, are made of plastic, while that with the can 10 connected internal thread is made of steel.
  • the propellant charge chamber 20 which is made of steel, shields the electrically activatable ignition charge 19 against strong electromagnetic pulses, which could otherwise cause undesired ignition, in an advantageous and reliable manner.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Air Bags (AREA)
  • Toys (AREA)
  • Elimination Of Static Electricity (AREA)
  • Tents Or Canopies (AREA)
  • Emergency Lowering Means (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

The projectile (1) comprises a chamber (20) wherein is stored a propelling charge comprising a powder releasing a small amount of smoke and susceptible of being actuated by an electrically controlled priming charge (19). A capillary orifice (20b, 20c) is provided in each frontwall of the chamber (20). High pressure propulsion gases traverse the capillary conduit (20b) towards the propulsion chamber not represented to produce a regular acceleration of the projectile (1), thereby enabling to project heavier smoke projectiles. The ignition of the smoke charge (12) is effected through the other capillary orifice (20c).

Description

Die Erfindung betrifft einen Nebelwurfkörper nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a smoke nozzle according to the preamble of patent claim 1.

Nebelwurfkörper der eingangs näher bezeichneten Art sind aus der DE-A-1578348 bekannt. Sie dienen vornehmlich zum Selbstschutz von Fahrzeugen aller Art, insbesondere auch von Kampfpanzern und werden deshalb von diesen Fahrzeugen mitgeführt und aus von außen am Fahrzeug angeordneten Wurfbechem abgeschossen. Herkömmliche, in großen Stückzahlen verbreitete Wurfbecher sind für einen maximalen Gasdruck von etwa 13,5 Bar ausgelegt, so daß zum Auswerfen der Nebelwurfkörper nur ein im wesentlichen aus Schwarzpulver bestehender Treibladungssatz verwendet werden kann, der einen entsprechend geringen Gasdruck erzeugt. Obwohl es wegen der damit erreichbaren besseren Schutzwirkung erwünscht ist, Nebelwurfkörper mit einer größeren Nebelladung vom schutzsuchenden Fahrzeug auszuwerfen, ist dies mit den herkömmlichen Wurfbechern aufgrund ihrer vergleichsweise geringen Druckfestigkeit nicht ohne weiteres möglich. Die bisher üblichen Schwarzpulvertreibladungen haben darüberhinaus noch den Nachteil, daß sie die elektrischen Kontaktanschlüsse für die Zündung der Nebelwurfkörper stark verschmutzen.Mist projectors of the type specified in the introduction are known from DE-A-1578348. They serve primarily for the self-protection of vehicles of all kinds, in particular also of battle tanks, and are therefore carried by these vehicles and shot down from throwing cups arranged on the outside of the vehicle. Conventional throwing cups, which are widespread in large quantities, are designed for a maximum gas pressure of approximately 13.5 bar, so that only a propellant charge consisting essentially of black powder can be used for ejecting the smoke throwing body, which generates a correspondingly low gas pressure. Although it is desirable because of the better protective effect that can be achieved with this, it is not easy to eject smoke impact bodies with a larger fog load from the vehicle seeking protection, because of their comparatively low pressure resistance, with conventional throwing cups. The black powder propellant charges that have been customary to date also have the disadvantage that they heavily contaminate the electrical contact connections for the ignition of the smoke projectors.

Insbesondere dann, wenn unmittelbar nach dem Auswerfen der Nebelwurfkörper keine Reinigung möglich ist, treten starke Korrosionserscheinungen auf, die zu Kontaktschwierigkeiten führen und einen wiederholten Auswurf eines Nebelwurtkörpers zumindest erschweren.In particular, if cleaning is not possible immediately after the ejection of the smoke ejection bodies, severe corrosion phenomena occur, which lead to contact difficulties and at least make it more difficult to eject a smoke ejection body again.

Der Erfindung liegt die Aufgabe zugrunde, einen verbesserten Nebelwurfkörper anzugeben, mit dem, schneller als bei bisher üblichen Nebelwurfkörpem, ein sicherer Selbstschutz erzeugbar ist und bei dessen Auswurf eine die Betriebssicherheit beeinträchtigende Kontaktverschmutzung des Auswurfbechers vermeidbar ist.The invention has for its object to provide an improved smoke ejection body, with which, faster than with conventional smoke ejection bodies, a safe self-protection can be generated and when it is ejected, contact contamination of the ejection cup impairing operational safety can be avoided.

Diese Aufgabe wird ausgehend von einem Nebelwurfkörper der eingangs näher beschriebenen Art durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmale gelöst.This object is achieved on the basis of a smoke nozzle of the type described in more detail above by the features specified in the characterizing part of patent claim 1.

Vorteilhafte Ausgestaltungen und Weiterbildungen des Nebelwurikörpers gehen aus den Unteransprüchen hervor.Advantageous refinements and developments of the mistworm body emerge from the subclaims.

Die Erfindung wird nachfolgend unter Bezugnahme auf die Zeichnung näher erläutert. Dabei zeigt :

  • Fig. 1 : einen Längsschnitt durch den Nebelwurfkörper ;
  • Fig. 2: einen Längsschnitt durch den Boden des Nebelwurfkörpers ;
  • Fig. 3: eine Aufsicht auf den im vergrößerten Maßstab dargestellten Boden der Treibladungskammer ;
  • Fig. 4: einen Längsschnitt durch den Boden der Treibladungskammer.
The invention is explained in more detail below with reference to the drawing. It shows:
  • Fig. 1: a longitudinal section through the smoke nozzle;
  • 2 shows a longitudinal section through the bottom of the smoke-throwing body;
  • 3 shows a plan view of the bottom of the propellant charge chamber shown on an enlarged scale;
  • Fig. 4: a longitudinal section through the bottom of the propellant charge chamber.

Fig. 1 zeigt im Längsschnitt einen Nebelwurfkörper 1, der eine vorzugsweise im Tiefziehverfahren hergestellte Dose 10 umfaßt, in der die Nebelladung 12 eingepreßt ist. Die Dose 10 ist durch einen Deckel 14 abgeschlossen, der auf seinem Umfang zwei von einem Isolierring 15 voneinander getrennte Kontaktringe 13 aufweist. Der hier nicht dargestellte Wurfbecher, der im wesentlichen aus einem zylindrischen Mantel und einem Boden besteht, weist in Höhe der genannten Kontaktringe federnd und isoliert im Wurfbechermantel gelagerte Kontaktstifte auf, über die beim Abfeuern des Nebelwurfkörpers 1 eine Spannung angelegt wird. Über mit den Kontaktringen 13 verbundene elektrische Leitungen 19a wird mit dieser Spannung eine Zündladung 19 in Form einer elektrischen Zündpille beaufschlagt (Fig. 1, Fig.2). Auch die herkömmliche Schwarzpulvertreibladung wird auf diese Weise angezündet und erzeugt zum Auswurf des Nebeiwurfkörpers 1 Treibladungsgase, deren Druckniveau die Belastbarkeit der Wurfbecher nicht überschreitet. Herkömmliche Schwarzpulvertreibladungen verschmutzen jedoch die Kontaktmittel sehr stark und beeinträchtigen daher die Betriebssicherheit.Fig. 1 shows a longitudinal section of a smoke ejector 1, which comprises a can 10, preferably manufactured in the deep-drawing process, in which the fog charge 12 is pressed. The box 10 is closed by a cover 14 which has on its periphery two contact rings 13 separated from one another by an insulating ring 15. The throwing cup, not shown here, which consists essentially of a cylindrical jacket and a bottom, has resilient and insulated contact pins mounted in the throwing cup jacket at the level of the said contact rings, via which a voltage is applied when the mist launcher 1 is fired. An ignition charge 19 in the form of an electric squib is applied to this voltage via electrical lines 19a connected to the contact rings 13 (FIG. 1, FIG. 2). The conventional black powder propellant charge is also ignited in this way and generates 1 propellant charge gases for ejecting the throwing body, the pressure level of which does not exceed the load capacity of the throwing cup. Conventional black powder propellants, however, contaminate the contact means very heavily and therefore impair operational safety.

Die Erfindung bezweckt eine Verbesserung des Selbstschutzes durch Werfen von Nebelwurfkörpern mit größerer Nebelladung, ohne Überschreitung des zulässigen Druckniveaus mit stark gesteigerter Betriebssicherheit. Sie ermöglicht dies durch Schaffung eines neuartigen, nachfolgend noch näher beschriebenen Antriebs.The invention aims to improve the self-protection by throwing smoke throwing bodies with a larger fog load, without exceeding the permissible pressure level with greatly increased operational reliability. It enables this by creating a new type of drive, which will be described in more detail below.

Während bei herkömmlichen Schwarzpulvertreibladungen nach deren Anzünden ein bestimmtes, die maximale Belastbarkeit des Wurfbechers nicht übersteigendes Druckniveau erzeugt wird, das nach Beginn der Beschleunigungsphase des auszuwerfenden Nebelwurfkörpers bis zu dessen völligen Ausstoßen ständig abnimmt, sorgt die Erfindung dafür, daß im Wurfbecher trotz Beschleunigung des Nebelwurfkörpers praktisch bis zu dessen endgültigen Auswerfen, ein konstantes Druckniveau innerhalb der maximalen Druckbelastbarkeit des Wurfbechers verbleibt, wodurch der auszustoßende Nebelwurfkörper ständig beschleunigt wird. Dazu verfügt der erfindungsgemäß ausgestaltete Nebeiwurfkörper 1 über eine hochdruckfeste Treibladungskammer 20, in der ein hochkaloriges rauchschwaches Pulver, z. B. ein Nitroglyzerinpulver 21 als Treibladung angeordnet ist, das von der Zündladung 19 elektrisch gezündet wird. Die in den Deckel 14 des Nebelwurfkörpers 1 eingesetzte Treibladungskammer 20 besteht aus einem im wesentlichen topfförmig ausgebildeten Gehäuse 20d, das mit einem einschraubbaren Deckel 20a verschlossen ist. In beiden Stirnflächen der Treibladungskammer 20 ist je eine Kapillarbohrung 20b, 20c angeordnet, die zur Verbesserung der Lagerfähigkeit mit einer Abdeckung 18a, 18b, z. B. einer selbstklebenden Folie aus Metall oder Kunststoff abgedeckt sind. Durch diese Abdeckung wird der Eintritt von Feuchtigkeit zur Treibladung 21 verhindert. Nach Anzünden der Treibladung 21 durch elektrische Zündung der Zündladung 19 über die Kontaktringe 13 und die Anschlußdrähte 19a baut sich durch Umsetzung des Treibladungspulvers 21 in der Treibladungskammer 20 ein vergleichsweise hoher Druck in der Größenordnung von etwa 1000 Bar auf. Das in der Treibladungskammer 20 gebildete hochgespannte Treibladungsgas gelangt in die Bohrung 20b, zerreißt die Abdeckung 18b und tritt dann in eine ringgrabenförmige Vertiefung ein, die von der Außenwandung des Abwurfbechers und einer in seinem Zentrum hervorragenden Auflagedom, auf dem der abschußbereite Nebelwurfkörpr 1 ruht, begrenzt wird. Durch geeignete Bemessung der Bohrung 20b werden die hochgespannten Treibladungsgase derart gedrosselt, daß sich im Wurfbecher nur ein dessen maximale Belastbarkeit nicht übersteigendes Druckniveau einstellt. Da jedoch durch die Bohrung 20b auch nach beginnender Beschleunigung des Nebelwurikörpers 1 ständig Treibladungsgas nachgeliefert wird, wird im Wurfbecher dieses Druckniveau solange aufrechterhalten, bis der Nebelwurfkörper 1 vollständig aus dem Wurfbecher ausgetreten ist. Auf diese Weise läßt sich - anders als bei herkömmlichen Nebelwurfkörpem - während der Verweildauer des Nebelwurfkörpers 1 im Wurfbecher eine konstante Beschleunigung erzielen, wodurch sich gleiche Wurfreichweiten mit schwereren Nebelwurfkörpem erzielen erzielen lassen. Die Bohrung 18b ist dabei zweckmäßig winklig angeordnet, und zwar vorzugsweise in einem Winkel a von 18° bis 25° vorzugsweise 20° zur Längsachse 40 (Fig. 4) der Treibladungskammer 20, um die Treibladungsgase in die ringförmig umlaufende Ausnehmung des nicht dargestellten Wurfbechers gelangen zu lassen. Der Durchmesser der Bohrung 20b liegt zwischen 1 mm und 1,4 mm. In einem besonders vorteilhaften Ausführungsbeispiel der Erfindung beträgt der Durchmesser der Bohrung 20b 1,2 mm.While with conventional black powder propellant charges a certain pressure level, which does not exceed the maximum load capacity of the throwing cup, is generated, which decreases continuously after the acceleration phase of the smoke ejection body to be ejected until it is completely ejected, the invention ensures that the throwing cup is practical despite the acceleration of the smoke body until it is finally ejected, a constant pressure level remains within the maximum pressure load capacity of the throwing cup, as a result of which the smoke ejection body to be ejected is constantly accelerated. For this purpose, the throwing body 1 designed according to the invention has a high-pressure-resistant propellant charge chamber 20, in which a high-calorie, low-smoke powder, e.g. B. a nitroglycerin powder 21 is arranged as a propellant charge, which is ignited by the primer 19 electrically. The propellant charge 20 inserted into the cover 14 of the mist-casting body 1 consists of an essentially pot-shaped housing 20d, which is closed with a screw-in cover 20a. A capillary bore 20b, 20c is arranged in each of the two end faces of the propellant charge chamber 20 and is provided with a cover 18a, 18b, e.g. B. a self-adhesive film made of metal or plastic are covered. This cover prevents moisture from entering the propellant charge 21. After ignition of the propellant charge 21 by electrical ignition of the primer charge 19 via the contact ge 13 and the connecting wires 19a builds up by implementing the propellant powder 21 in the propellant chamber 20, a comparatively high pressure in the order of about 1000 bar. The high-tension propellant gas formed in the propellant charge chamber 20 enters the bore 20b, tears the cover 18b and then enters an annular trench-shaped depression, which is delimited by the outer wall of the discharge cup and an outstanding support dome in its center, on which the ready-to-fire mist launcher 1 rests becomes. By suitable dimensioning of the bore 20b, the high-tension propellant gases are throttled in such a way that only a pressure level which does not exceed its maximum load capacity is established in the throwing cup. However, since propellant gas is continuously supplied through the bore 20b even after acceleration of the mist casting body 1 begins, this pressure level is maintained in the throwing cup until the mist casting body 1 has completely emerged from the throwing cup. In this way, in contrast to conventional smoke throwing bodies, a constant acceleration can be achieved during the dwell time of the smoke throwing body 1 in the throwing cup, as a result of which the same throwing ranges can be achieved with heavier smoke throwing bodies. The bore 18b is expediently arranged at an angle, and preferably at an angle a of 18 ° to 25 °, preferably 20 ° to the longitudinal axis 40 (FIG. 4) of the propellant charge chamber 20, in order to get the propellant charge gases into the annular circumferential recess of the throwing cup, not shown allow. The diameter of the bore 20b is between 1 mm and 1.4 mm. In a particularly advantageous embodiment of the invention, the diameter of the bore 20b is 1.2 mm.

Auch in der der Nebelladung 12 zugewandten Stimfläche der Treibladungskammer 20 ist eine Kapillarbohrung 20c angeordnet, die für Lagerungszwecke zunächst ebenfalls noch mit einer Abdeckung 18a verschlossen ist. Nach Anzünden der Treibladung 21 treten die heißen Treibladungsgase auch in die Bohrung 20c ein, durchschlagen die Abdeckung 18a und entzünden dann die Nebelladung 12 in einem der Bohrung 20c benachbarten Bereich 12a, in dem die Nebelladung 12 eine Vertiefung 12b umgibt. Durch das Zünden der Nebelladung 12 in deren Bereich 12a baut sich zwischen der Nebelladung 12 und dem die Dose 10 verschließenden Deckel 14 des Nebelwurfkörpers 1 ein hoher Druck auf, der schließlich dazu führt, daß das Gewinde 14a, mit dem der Deckel 14 am Nebelwurfkörper befestigt ist, nachzugeben beginnt und schließlich ausreißt, so daß sich zwischen Deckel 14 und dem durch diesen verschlossenen Querschnitt des Nebelwurfkörpers 1 ein Ringspalt bildet, durch den die angestauten Nebelschwaden austreten können. Auf diese Weise wird schon während des Fluges des Nebelwurfkörpers 1 durch kegelmantelförmig verlaufende Nebelschleppen der einzelnen Nebelwurfkörper 1 ein dichter, Anfangsschutz bietender Nebelvorhang erzeugt. Nach Niederfallen des Nebelwurikörpers 1 - der Deckel 14 wurde schon noch während des Flugs völlig abgesprengt - kann der aus der brennenden Nebelladung 12 erzeugte Nebel ungestört durch gleichmäßig auf dem Umfang des Nebeiwurfkörpers verteilt angeordnete Öffnungen 10a austreten, so daß sich schnell eine Sichtschutz bietende Nebelwand bildet.A capillary bore 20c is also arranged in the end face of the propellant charge chamber 20 facing the fog charge 12 and is initially also closed with a cover 18a for storage purposes. After the propellant charge 21 has been ignited, the hot propellant charge gases also enter the bore 20c, penetrate the cover 18a and then ignite the mist charge 12 in an area 12a adjacent to the bore 20c, in which the mist charge 12 surrounds a depression 12b. By igniting the fog charge 12 in its area 12a, a high pressure builds up between the fog charge 12 and the lid 14 of the smoke nozzle body 1 which closes the can 10, which ultimately leads to the thread 14a with which the lid 14 is attached to the smoke nozzle body is, begins to yield and finally tears out, so that an annular gap is formed between the cover 14 and the cross-section of the muffling body 1 closed by this, through which the pent-up fog can emerge. In this way, a dense fog curtain, which provides initial protection, is generated during the flight of the smoke ejection body 1 by dragging the individual smoke ejection bodies 1 in a cone-shaped manner. After the mistworm body 1 has fallen down - the cover 14 has been completely blown off even during the flight - the mist generated from the burning mist load 12 can emerge undisturbed through openings 10a which are evenly distributed over the circumference of the nebulizer body, so that a mist shield is formed which quickly provides privacy .

Das Ausreißen des Gewindes 14a und die Abtrennung des Deckels 14 werden dadurch begünstigt, daß der die aus Stahl bestehende hochdruckfeste Treibladungskammer 20 umschließende Teil des Deckels 14, insbesondere also auch das von ihm getragene Außengewinde 14a, aus Kunststoff bestehen, während das mit der Dose 10 verbundene Innengewinde in Stahl ausgeführt ist.The tearing out of the thread 14a and the detachment of the cover 14 are favored in that the part of the cover 14 which surrounds the high-pressure-resistant propellant charge chamber 20, which is made of steel, and in particular also the external thread 14a carried by it, are made of plastic, while that with the can 10 connected internal thread is made of steel.

Die aus Stahl bestehende Treibladungskammer 20 schirmt in vorteilhafter und zuverlässiger Weise die elektrisch aktivierbare Zündladung 19 gegen starke elektromagnetische Impulse ab, die ansonsten eine unerwünschte Zündung bewirken könnten.The propellant charge chamber 20, which is made of steel, shields the electrically activatable ignition charge 19 against strong electromagnetic pulses, which could otherwise cause undesired ignition, in an advantageous and reliable manner.

Die aus der Treibladung 21 erzeugten Treibladungsgase, die - wie zuvor beschrieben - durch die Bohrung 20b in den Wurfbecher eintreten, führen zu keiner merkbaren Verunreinigung bzw. Korrosion der im Wurfbecher angeordneten Kontaktstifte und ermöglichen daher ein betriebssicheres wiederholtes Beschicken des Wurfbechers und Abfeuern von Nebelwurikörpern 1 ohne besondere Reinigungsmaßnahmen. Auf diese Weise lassen sich die Wartungskosten erheblich reduzieren und die Betriebssicherheit steigern.The propellant gases generated from the propellant charge 21, which - as described above - enter the throwing cup through the bore 20b, do not lead to any noticeable contamination or corrosion of the contact pins arranged in the throwing cup and therefore enable the throwing cup to be loaded repeatedly and fired from the mistworm bodies 1 in a manner that is reliable in operation without special cleaning measures. In this way, maintenance costs can be significantly reduced and operational reliability increased.

Claims (6)

1. Smoke-producing projectile, consisting of a casing serving to accommodate the smoke charge and preferably made by a deep drawing process and a cover bearing a detonation charge, a propulsive charge and around the periphery electrical contact rings, the detonation charge (19) and the propulsive charge (21) being positioned in a propulsive-charge chamber (20) resistant to high pressure and mounted in the cover (14) and of substantially hollow cylindrical shape, the end surfaces of the said chamber being provided with capillary borings (20b, 20c), characterised by the fact that the base (20a) of the propulsive-charge chamber (20) only has one capillary boring (20b) and that the diameter of the boring (20b) is 1 to 1.4 mm preferably 1.2 mm.
2. Smoke-producing projectile in accordance with Claim 1, characterised by the fact that the propulsive-charge chamber (20) contains as the propulsive charge (21) a powder with a low smoke content such as a nitro-glycerine powder.
3. Smoke-producing projectile in accordance with one of Claims 1, 2, characterised by the fact that the capillary boring (20b) is positioned in the base (20a) of the propulsive-charge chamber (20) at an angle in relation to the longitudinal axis (20) of the propulsive-charge chamber (20) and preferably encloses with this latter an angle α of 20°.
4. Smoke-producing projectile in accordance with one of Claims 1 to 3, characterised by the fact that the propulsive-charge chamber (20) consists of steel and is embedded in a cover (14) consisting of plastic.
5. Smoke-producing projectile in accordance with one of Claims 1 to 4, characterised by the fact that the borings (10b, 20c) are covered by coverings (18a, 18b) respectively, preferably made of a self-adhesive foil.
6. Smoke-producing projectile in accordance with one of Claims 1 to 5, characterised by the fact that the smoke charge (12) has a recess (12b) in a zone (12a) situated opposite the capillary boring (20c) in the end face between the propulsive-charge chamber (20) and the smoke charge.
EP86901835A 1985-03-22 1986-02-25 Smoke-producing projectile Expired EP0255515B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86901835T ATE44819T1 (en) 1985-03-22 1986-02-25 FOG BODY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3510367 1985-03-22
DE19853510367 DE3510367A1 (en) 1985-03-22 1985-03-22 FOGGED BODY

Publications (2)

Publication Number Publication Date
EP0255515A1 EP0255515A1 (en) 1988-02-10
EP0255515B1 true EP0255515B1 (en) 1989-07-19

Family

ID=6265997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86901835A Expired EP0255515B1 (en) 1985-03-22 1986-02-25 Smoke-producing projectile

Country Status (14)

Country Link
US (1) US4727811A (en)
EP (1) EP0255515B1 (en)
JP (1) JPS62501795A (en)
AU (1) AU575249B2 (en)
CA (1) CA1267037A (en)
DE (2) DE3510367A1 (en)
DK (1) DK425986A (en)
ES (1) ES8705969A1 (en)
FI (1) FI864531A0 (en)
GR (1) GR860344B (en)
IL (1) IL77981A (en)
NZ (1) NZ215537A (en)
WO (1) WO1986005582A1 (en)
ZA (1) ZA861794B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800599A1 (en) * 1988-01-12 1989-07-27 Feistel Pyrotech Fab CONTACT HEAD FOR QUICK MIST SHOOTING BODIES
US4998479A (en) * 1988-06-15 1991-03-12 Perham William J Smoke generating device with rechargable cartridge
DE4328581A1 (en) * 1993-08-25 1995-03-02 Nico Pyrotechnik Smoke missile
FR2730048B1 (en) * 1995-01-31 1997-03-28 Princhim Sa IMPROVEMENTS TO A SMOKE CASE

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1039870A (en) * 1912-02-03 1912-10-01 Krupp Ag Burning fuse for projectiles.
US2307369A (en) * 1941-04-22 1943-01-05 Clyde B Ferrel Projectile
FR1265039A (en) * 1959-08-13 1961-06-23 Wefo Pyrotechnische Fabrik Wis Smoke candle and its launching mortar
FR2207318B1 (en) * 1972-11-21 1976-04-23 Nickel Le
US4135455A (en) * 1977-02-03 1979-01-23 Tracor, Inc. Multiple payload cartridge employing single pair of electrical connections
US4164186A (en) * 1977-10-21 1979-08-14 The United States Of America As Represented By The Secretary Of The Navy Submarine signal fuze
NO142929C (en) * 1978-03-08 1980-11-12 Raufoss Ammunisjonsfabrikker ROEYKBOKS.
DE2932922C2 (en) * 1979-08-14 1983-12-01 Buck Chemisch-Technische Werke Gmbh & Co, 8230 Bad Reichenhall Smoke missile
DE2932921C2 (en) * 1979-08-14 1984-10-31 Buck Chemisch-Technische Werke Gmbh & Co, 8230 Bad Reichenhall Contact head for throwing bodies that can be locked from electrically operated throwing cups
DE3246173A1 (en) * 1982-12-14 1984-06-14 Rheinmetall GmbH, 4000 Düsseldorf AMMUNITION, ESPECIALLY FOR STEAP FIRE
EP0157421B1 (en) * 1984-04-03 1988-10-05 Pyrotechnische Fabrik F. Feistel GmbH + Co KG Smoke-producing projectile

Also Published As

Publication number Publication date
DK425986D0 (en) 1986-09-05
IL77981A (en) 1990-12-23
ES8705969A1 (en) 1987-06-01
FI864531A (en) 1986-11-07
ES552936A0 (en) 1987-06-01
DK425986A (en) 1986-10-28
WO1986005582A1 (en) 1986-09-25
NZ215537A (en) 1988-02-29
DE3664534D1 (en) 1989-08-24
GR860344B (en) 1986-06-26
AU5628886A (en) 1986-10-13
CA1267037A (en) 1990-03-27
AU575249B2 (en) 1988-07-21
JPH0447239B2 (en) 1992-08-03
FI864531A0 (en) 1986-11-07
ZA861794B (en) 1986-11-26
EP0255515A1 (en) 1988-02-10
JPS62501795A (en) 1987-07-16
US4727811A (en) 1988-03-01
DE3510367A1 (en) 1986-09-25

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