EP0499701A1 - Safety device for barrel launched projectiles - Google Patents

Safety device for barrel launched projectiles Download PDF

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Publication number
EP0499701A1
EP0499701A1 EP91120861A EP91120861A EP0499701A1 EP 0499701 A1 EP0499701 A1 EP 0499701A1 EP 91120861 A EP91120861 A EP 91120861A EP 91120861 A EP91120861 A EP 91120861A EP 0499701 A1 EP0499701 A1 EP 0499701A1
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EP
European Patent Office
Prior art keywords
projectile
delay
sensor
firing
charge
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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
EP91120861A
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German (de)
French (fr)
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EP0499701B1 (en
Inventor
Norbert Dr. Wardecki
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Buck Chemisch Technische Werke GmbH and Co
Buck Werke GmbH and Co
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Buck Chemisch Technische Werke GmbH and Co
Buck Werke GmbH and Co
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Publication of EP0499701A1 publication Critical patent/EP0499701A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/005—Combination-type safety mechanisms, i.e. two or more safeties are moved in a predetermined sequence to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/28—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/31—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids generated by the combustion of a pyrotechnic or explosive charge within the fuze

Definitions

  • the invention relates to an arrangement for preventing premature ignition of an active charge of a projectile to be ignited by an adjustable delay detonator, which is fired by a discharge charge from a launch tube, according to the preamble of patent claim 1.
  • an arrangement is known from DE-PS 35 43 939 known.
  • the acceleration sensor and the tube sensor are prestressed into an end position, the acceleration sensor is coupled via a locking bolt to a delay sensor loaded by a spring, and a transfer charge is located between the delay piece and the active charge, which can be displaced by a spring braked by an inhibitor.
  • the object of the present invention is therefore to design the known arrangement in such a way that the production costs are considerably reduced, but at the same time the safety and functional reliability is increased still further.
  • the solution to this problem results from the characterizing features of patent claim 1.
  • the fuse arrangement is accommodated in the base region of the throwing body and represents the connecting link between the discharge charge or a special ignition charge assigned to it and the active charge or a special ignition charge assigned to it.
  • the arrangement has two mutually parallel pyrotechnic delay sets, which extend in the firing direction (arrow A), hereinafter referred to as delay sections, namely a first delay section 10 and a second delay section 11.
  • the first delay section 10 is followed coaxially by a firing pin 12, the tip of which 12a in extends into a channel 13 which extends transversely to the firing direction A.
  • a tube sensor 14 in the form of a bolt with a retracted shaft is slidably accommodated in the channel 13, the tip 12a of the firing pin 12 resting on the shaft of the tube sensor in the position shown in FIG. 1, or the firing pin 12 otherwise from the tube sensor 14 in the starting position is held.
  • a short pipe section 15 extends from the channel 13 in the firing direction A, at the bottom of which there is a central firing cap 16 which is used to ignite the not-shown effective charge of the projectile.
  • the already mentioned second deceleration piece 11 also opens into the channel 13, as well as a channel 17 which also extends in the firing direction A and in which an acceleration sensor 18 slides.
  • the acceleration sensor 18 engages with its tip 18a in a recess 14a on the jacket of the tube sensor 14.
  • the arrangement also has elastic locking rings 19 which serve as catches for the sliding parts of the arrangement, that is to say for the firing pin 12, the tube sensor 14 and the acceleration sensor 18.
  • Fig. 1 the arrangement is shown in the safety position.
  • the tube sensor 14 lies with its shaft between the firing pin 12 and the percussion cap 16, whereby the ignition chain is interrupted by the delay piece 10 for active charging.
  • the tube sensor 14 is secured in this position in two ways, on the one hand by the wall of the launch tube indicated at 20, in which the projectile with its casing 21 is inserted, and on the other hand by the acceleration sensor 18, which has its tip 18a in the recess 14a of the pipe sensor 14 engages. If the ejection charge is now ignited via a usually electrical igniter, then there is a sequence as indicated in FIG. 2. This means that the hot gases of the ignition charge set the projectile in motion and at the same time ignite the two delay pieces 10, 11. As soon as the projectile has reached its maximum acceleration, the acceleration sensor 18 moves out of its detent (upwards in FIG.
  • the acceleration sensor 18 is therefore dimensioned in such a way that it only moves into its position releasing the pipe sensor 14 when the projectile has reached an acceleration which is sufficient for the projectile to be shot ballistically beyond the zone of the foreline safety. Should the projectile be braked strongly by some obstacle within the fore-pipe safety zone after leaving the pipe, despite this acceleration, then the acceleration sensor 18 moves again in the opposite direction into the pipe sensor 14, who has not yet moved outward, locking position back.
  • the delay time of the delay piece 11 is set so that at the time of its burn-through the - correctly accelerated - projectile has reached the end of the fore-pipe safety zone.
  • the delay time of the delay piece 10 is set to the desired point in time of the ignition of the active charge, so that in any case the delay time of the delay piece 10 is longer than that of the delay piece 11. Should the delay time of the delay piece 10 be shorter than that of the delay piece due to a malfunction 11, the ignition chain remains broken and in safety.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Air Bags (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

There is provided an arrangement for preventing a premature ignition of an active charge, to be ignited by an adjustable delayed-action fuse, of a projectile fired from a launching barrel by an ejection charge, the arrangement being based on a mechanical and a pyrotechnic safety element. The ignition path between a first delayed-action piece ignitable during firing and the active charge of the projectile can be blocked by a tubular sensor which is displaceable transversely relative to the firing direction and which, in its position blocking the ignition path, can be retained by an acceleration sensor displaceable counter to the firing direction and, as long as the projectile is in the launching barrel, by the tubular wall of the projectile. A second delayed-action piece likewise ignitable during firing and having a delay time shorter than that of the first delayed-action piece loads the tubular sensor by gas pressure in the direction of its arming position after the expiry of its delay time. …<IMAGE>…

Description

Die Erfindung betrifft eine Anordnung zum Verhindern einer vorzeitigen Zündung einer durch einen einstellbaren Verzögerungszünder zu zündenden Wirkladung eines Geschosses, das durch eine Ausstoßladung aus einem Abschußrohr verschossen wird, gemäß dem Oberbegriff des Patentanspruchs 1. Eine solche Anordnung ist aus der DE-PS 35 43 939 bekannt.The invention relates to an arrangement for preventing premature ignition of an active charge of a projectile to be ignited by an adjustable delay detonator, which is fired by a discharge charge from a launch tube, according to the preamble of patent claim 1. Such an arrangement is known from DE-PS 35 43 939 known.

Bei der bekannten Anordnung sind der Beschleunigungsfühler und der Rohrfühler in eine Endstellung vorgespannt, ist der Beschleunigungsfühler über einen Sperriegel mit einem durch eine Feder belasteten Verzögerungsfühler gekoppelt und befindet sich zwischen Verzögerungsstück und Wirkladung eine Übertragungsladung, die durch eine von einem Hemmwerk gebremste Feder verschiebbar ist. Erreicht wird mit dieser Anordnung, daß es bei unzulässiger Unterschreitung der vorgegebenen Abschuß-Maximalbeschleunigung oder noch im Abschußrohr erfolgender unzulässiger Abbremsung des auf die vorgegebene Maximalbeschleunigung beschleunigten Geschosses zu keiner Zündung der Wirkladung, also zu keinem Rohrkrepierer kommen kann, und daß darüberhinaus auch bei fehlerhaftem Verzögerungsstück oder fehlerhafter Einstellung des Verzögerungszünders keine vorzeitige Zündung der Wirkladung vor Erreichen eines vorgegebenen Sicherheitsabstandes des Geschosses vom Abschußrohr erfolgen kann, wobei auch den heutigen Sicherheitsvorschriften, welche zwei voneinander unabhängige physikalische Größen zur Sicherung verlangen, Rechnung getragen wird. Freilich ist die Herstellung dieser Anordnung aufgrund der vergleichsweise aufwendigen Konstruktion und der Erfordernis der exakten Abstimmung der verwendeten Federn schwierig und mit nicht unbeträchtlichen Kosten verbunden.In the known arrangement, the acceleration sensor and the tube sensor are prestressed into an end position, the acceleration sensor is coupled via a locking bolt to a delay sensor loaded by a spring, and a transfer charge is located between the delay piece and the active charge, which can be displaced by a spring braked by an inhibitor. It is achieved with this arrangement that there is no ignition of the active charge, that is to say if the missile falls below the specified maximum maximum acceleration or if the unstable deceleration of the projectile accelerated to the predetermined maximum acceleration still takes place in the launch tube no pipe cracker can occur, and that, even with a defective delay piece or incorrect setting of the delay igniter, the active charge cannot be ignited prematurely before a predetermined safety distance between the projectile and the launch tube has been reached, even with today's safety regulations, which require two independent physical variables for securing , Is taken into account. Of course, the production of this arrangement is difficult due to the comparatively complex construction and the need for the exact coordination of the springs used and involves considerable costs.

Aufgabe der vorliegenden Erfindung ist es deshalb, die bekannte Anordnung so auszubilden, daß die Herstellungskosten beträchtlich gesenkt werden, zugleich aber die Sicherheit und Funktionssicherheit noch weiter gesteigert wird. Die Lösung dieser Aufgabe ergibt sich aus den kennzeichnenden Merkmalen des Patentanspruchs 1.The object of the present invention is therefore to design the known arrangement in such a way that the production costs are considerably reduced, but at the same time the safety and functional reliability is increased still further. The solution to this problem results from the characterizing features of patent claim 1.

Bei der erfindungsgemäßen Anordnung werden nicht nur zwei voneinander unabhängige physikalische Größen zur Sicherung herangezogen, sondern zwei physikalische Größen unterschiedlicher Art, nämlich zum einen, wie bisher, die Mechanik, zum anderen aber die Pyrotechnik. Dabei ist darauf hinzuweisen, daß heute pyrotechnische Verzögerungssätze bezüglich ihrer Verzögerungszeit sehr exakt herzustellen sind, und das mit vergleichsweise geringen Kosten. Allein dadurch ergibt sich schon eine beträchtliche Kostenersparnis gegenüber der vorbekannten, rein mechanisch wirkenden Anordnung. Darüberhinaus erweitert sich der Sicherheitsbereich gegenüber einer unzulässigen Abbremsung - z.B. durch ein Hindernis - auch außerhalb vom Abschußrohr bis zur ordnungsgemäßen Freigabe der Zündkette.In the arrangement according to the invention, not only two independent physical quantities are used for security purposes, but two physical quantities of different types, namely, firstly, as before, the mechanics, and secondly the pyrotechnics. It should be pointed out that today pyrotechnic delay sets can be produced very precisely with regard to their delay time, and this with comparatively low costs. This alone results in considerable cost savings compared to the previously known, purely mechanical arrangement. In addition, the safety area is expanded to prevent inadmissible braking - e.g. through an obstacle - even outside of the launch tube until the ignition chain is properly released.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Auf der Zeichnung zeigen:

Fig. 1
eine Schemaskizze der Anordnung und
Fig. 2
ein Fließdiagramm zur Erläuterung der Funktion der Anordnung.
The invention is explained below with reference to the drawing. Show on the drawing:
Fig. 1
a schematic sketch of the arrangement and
Fig. 2
a flow chart to explain the function of the arrangement.

Die Sicherungsanordnung wird im Bodenbereich des Wurfkörpers untergebracht und stellt das Verbindungsglied zwischen der Ausstoßladung bzw. einer dieser zugeordneten besonderen Anzündladung und der Wirkladung, bzw. einer dieser zugeordneten besonderen Anzündladung, dar.The fuse arrangement is accommodated in the base region of the throwing body and represents the connecting link between the discharge charge or a special ignition charge assigned to it and the active charge or a special ignition charge assigned to it.

Die Anordnung weist zwei zueinander parallele, sich in Abschußrichtung (Pfeil A) erstreckenden pyrotechnische Verzögerungssätze auf, nachfolgend branchenüblich Verzögerungsstücke genannt, nämlich ein erstes Verzögerungsstück 10 und ein zweites Verzögerungsstück 11. Dem ersten Verzögerungsstück 10 ist koaxial ein Schlagbolzen 12 nachgeschaltet, dessen Spitze 12a in einen Kanal 13 hineinreicht, der quer zur Abschußrichtung A verläuft. Im Kanal 13 ist gleitbar ein Rohrfühler 14 in Form eines Bolzens mit eingezogenem Schaft untergebracht, wobei die Spitze 12a des Schlagbolzens 12 in der in Figur 1 gezeigten Position auf dem Schaft des Rohrfühlers aufliegt, bzw. der Schlagbolzen 12 anderweitig vom Rohrfühler 14 in der Ausgangsposition festgehalten wird. Diametral zum Schlagbolzen 12 geht vom Kanal 13 in Abschußrichtung A ein kurzes Rohrstück 15 ab, an dessen Boden sich zentral ein Schlagzündhütchen 16 befindet, das zum Zünden der nicht-gezeichneten Wirkladung des Geschosses dient.The arrangement has two mutually parallel pyrotechnic delay sets, which extend in the firing direction (arrow A), hereinafter referred to as delay sections, namely a first delay section 10 and a second delay section 11. The first delay section 10 is followed coaxially by a firing pin 12, the tip of which 12a in extends into a channel 13 which extends transversely to the firing direction A. A tube sensor 14 in the form of a bolt with a retracted shaft is slidably accommodated in the channel 13, the tip 12a of the firing pin 12 resting on the shaft of the tube sensor in the position shown in FIG. 1, or the firing pin 12 otherwise from the tube sensor 14 in the starting position is held. Diametrically to the firing pin 12, a short pipe section 15 extends from the channel 13 in the firing direction A, at the bottom of which there is a central firing cap 16 which is used to ignite the not-shown effective charge of the projectile.

In den Kanal 13 mündet auch das bereits erwähnte zweite Verzögerungsstück 11 sowie ein sich ebenfalls in Abschußrichtung A erstreckender Kanal 17, in welchem ein Beschleunigungsfühler 18 gleitet. Der Beschleunigungsfühler 18 greift in der auf der Zeichnung gezeigten Position mit seiner Spitze 18a in eine Ausnehmung 14a am Mantel des Rohrfühlers 14 ein. Schließlich weist die Anordnung noch elastische Arretierringe 19 auf, die als Rasten für die Gleitteile der Anordnung dienen, also für den Schlagbolzen 12, den Rohrfühler 14 und den Beschleunigungsfühler 18.The already mentioned second deceleration piece 11 also opens into the channel 13, as well as a channel 17 which also extends in the firing direction A and in which an acceleration sensor 18 slides. In the position shown in the drawing, the acceleration sensor 18 engages with its tip 18a in a recess 14a on the jacket of the tube sensor 14. Finally, the arrangement also has elastic locking rings 19 which serve as catches for the sliding parts of the arrangement, that is to say for the firing pin 12, the tube sensor 14 and the acceleration sensor 18.

In Fig. 1 ist die Anordnung in Sicherheitsposition dargestellt. Dabei liegt der Rohrfühler 14 mit seinem Schaft zwischem dem Schlagbolzen 12 und dem Schlagzündhütchen 16, womit die Zündkette vom Verzögerungsstück 10 zur Wirkladung unterbrochen ist.In Fig. 1 the arrangement is shown in the safety position. The tube sensor 14 lies with its shaft between the firing pin 12 and the percussion cap 16, whereby the ignition chain is interrupted by the delay piece 10 for active charging.

Gesichert ist dabei der Rohrfühler 14 in dieser Stellung auf zweifache Weise, zum einen durch die bei 20 angedeutete Wandung des Abschußrohres, in welcher das Geschoß mit seiner Hülle 21 steckt, undzum anderen durch den Beschleunigungsfühler 18, der mit seiner Spitze 18a in die Ausnehmung 14a des Rohrfühlers 14 eingreift. Wird nun über einen üblicherweise elektrischen Anzünder die Ausstoßladung gezündet, dann ergibt sich ein Ablauf, wie er in Fig. 2 angedeutet ist. Das heißt, die heißen Gase der Anzündladung setzen das Geschoß in Bewegung und zünden zugleich die beiden Verzögerungsstücke 10, 11 an. Sobald nun das Geschoß seine Maximalbeschleunigung erreicht hat, bewegt sich der Beschleunigungsfühler 18 infolge seiner Trägheit aus seiner Raste (in Fig. 1 nach oben), womit seine Spitze 18a aus der Ausnehmung 14a des Rohrfühlers 14 herausgleitet, und rastet dann in der oberen Raststellung ein. Der Rohrfühler 14 verbleibt aber trotzdem in seiner Sicherheitsposition, und zwar selbst dann, wenn das Geschoß das Abschußrohr verlassen hat, weil auf den Rohrfühler 14 noch keine Kraft in Richtung seiner Entsicherungsposition (auf der Zeichnung Verschiebung in Richtung nach rechts) ausgeübt wird. Erst wenn das Verzögerungsstück 11 durchgebrannt ist, bildet sich durch seine Abbrandgase im Kanal 13 ein Druck aus, der den Rohrfühler 14 nach außen schiebt, so daß der Weg zwischen Schlagbolzen 12 und Schlagzündhütchen 16 frei wird. Sobald dann das Verzögerungsstück 10 durchgebrannt ist, beschleunigen dessen Abgase den Schlagbolzen 12, so daß dessen Spitze 12a auf das Schlagzündhütchen 16 trifft, das dann seinerseits die Wirkladung entzündet.The tube sensor 14 is secured in this position in two ways, on the one hand by the wall of the launch tube indicated at 20, in which the projectile with its casing 21 is inserted, and on the other hand by the acceleration sensor 18, which has its tip 18a in the recess 14a of the pipe sensor 14 engages. If the ejection charge is now ignited via a usually electrical igniter, then there is a sequence as indicated in FIG. 2. This means that the hot gases of the ignition charge set the projectile in motion and at the same time ignite the two delay pieces 10, 11. As soon as the projectile has reached its maximum acceleration, the acceleration sensor 18 moves out of its detent (upwards in FIG. 1) due to its inertia, whereby its tip 18a slides out of the recess 14a of the tube sensor 14, and then engages in the upper detent position . However, the tube sensor 14 remains in its safety position, even if the projectile has left the launch tube, because no force is exerted on the tube sensor 14 in the direction of its unlocking position (in the drawing, displacement towards the right). Only when the delay piece 11 has blown through its combustion gases in the channel 13 does a pressure develop, which pushes the pipe sensor 14 outward, so that the path between the firing pin 12 and the percussion cap 16 is cleared. As soon as the delay piece 10 is blown, its exhaust gases accelerate the firing pin 12, so that its tip 12a strikes the percussion cap 16, which in turn ignites the active charge.

Der Beschleunigungsfühler 18 ist also in seiner Masse so bemessen, daß er sich erst dann in seine den Rohrfühler 14 freigebende Position bewegt, wenn das Geschoß eine Beschleunigung erreicht hat, die ausreicht, daß das Geschoß ballistisch über die Zone der Vorrohrsicherheit hinausgeschossen wird. Sollte trotz Erreichen dieser Beschleunigung das Geschoß nach Verlassen des Rohrs noch innerhalb der Vorrohrsicherheitszone durch irgendein Hindernis stark abgebremst werden, dann bewegt sich der Beschleunigungsfühler 18 in entgegengesetzter Richtung wieder in die den Rohrfühler 14, der sich ja noch nicht nach außen bewegt hat, sperrende Position zurück. Die Verzögerungszeit des Verzögerungsstücks 11 ist so eingestellt, daß zum Zeitpunkt seines Durchbrands das - richtig beschleunigte - Geschoß das Ende der Vorrohr-Sicherheitszone erreicht hat. Die Verzögerungszeit des Verzögerungsstücks 10 dagegen ist auf den gewünschten Zeitpunkt der Zündung der Wirkladung eingestellt, wobei also auf jeden Fall die Verzögerungszeit des Verzögerungsstücks 10 länger ist als diejenige des Verzögerungsstücks 11. Sollte aufgrund einer Fehlfunktion die Verzögerungszeit des Verzögerungstückes 10 kürzer sein als die des Verzögerungsstückes 11, so bleibt die Zündkette unterbrochen und in Sicherstellung. Um dem Rohrfühler 14 bzw. dem Schlagbolzen 12 die erforderliche Schubkraft zu geben, ist es zweckmäßig, die beiden Verzögerungsstücke 10, 11 mit einem verstärkten Druckausgang zu versehen oder aber am Verzögerungsstückende einen weiteren pyrotechnischen Satz als Druckerzeuger anzubringen.The acceleration sensor 18 is therefore dimensioned in such a way that it only moves into its position releasing the pipe sensor 14 when the projectile has reached an acceleration which is sufficient for the projectile to be shot ballistically beyond the zone of the foreline safety. Should the projectile be braked strongly by some obstacle within the fore-pipe safety zone after leaving the pipe, despite this acceleration, then the acceleration sensor 18 moves again in the opposite direction into the pipe sensor 14, who has not yet moved outward, locking position back. The delay time of the delay piece 11 is set so that at the time of its burn-through the - correctly accelerated - projectile has reached the end of the fore-pipe safety zone. The delay time of the delay piece 10, on the other hand, is set to the desired point in time of the ignition of the active charge, so that in any case the delay time of the delay piece 10 is longer than that of the delay piece 11. Should the delay time of the delay piece 10 be shorter than that of the delay piece due to a malfunction 11, the ignition chain remains broken and in safety. In order to give the pipe sensor 14 or the firing pin 12 the necessary thrust, it is expedient to provide the two delay pieces 10, 11 with an increased pressure output or to attach a further pyrotechnic set as a pressure generator at the end of the delay piece.

Aus obigem ergibt sich, daS mit der erfindungsgemäßen Anordnung eine Zündung der Wirkladung nur dann möglich ist, wenn

  • a) das Geschoß das Abschußrohr verlassen hat,
  • b) das Geschoß eine ausreichende Beschleunigung erfahren hat,
  • c) nach Abschuß eine vorgegebene Zeitspanne abgelaufen ist, die einen ausreichenden Sicherheitsabstand des Geschosses von der Rohrmündung gewährleistet,
  • d) während der Zeitspanne von c) keine beträchtliche Geschoßverzögerung der Geschoßgeschwindigkeit eingetreten ist.
It follows from the above that ignition of the active charge is only possible with the arrangement according to the invention if
  • a) the projectile has left the launch tube,
  • b) the projectile has experienced sufficient acceleration,
  • c) after firing, a predetermined period of time has elapsed, which ensures a sufficient safety distance of the projectile from the pipe mouth,
  • d) during the period of c) there has been no significant projectile delay in projectile velocity.

Trotz dieser hohen Sicherheit ist die Anordnung sehr wirtschaftlich herzustellen, wobei die Kosten beträchtlich unter denjenigen einer vergleichbaren, rein mechanischen Sicherungsanordnung liegen.Despite this high level of safety, the arrangement can be produced very economically, and the costs are considerably lower than those of a comparable, purely mechanical safety arrangement.

Claims (7)

Anordnung zum Verhindern einer vorzeitigen Zündung einer durch einen einstellbaren Verzögerungszünder zu zündenden Wirkladung eines Geschosses, das durch eine Ausstoßladung aus einem Abschußrohr verschossen wird, mit einem beim Abschuß anzündbaren, seinerseits die Wirkladung anzündenden pyrotechnischen Verzögerungsstück, einem in einer Sicherheitsstellung befindlichen Beschleunigungsfühler, der sich bei Beschleunigung des Geschosses auf vorgegebene Abschußgeschwindigkeit infolge seiner Massenträgheit entgegen der Abschußrichtung in eine Endsicherungsstellung bewegt, und einem quer zur Abschußrichtung verschiebbaren Rohrfühler, der aus seiner Sicherheitsstellung innerhalb des Geschoßmantels in eine Endsicherungsstellung bringbar ist, in welcher er seitlich über den Geschoßmantel hinausragt, wobei Verzögerungsstück und Wirkladung nur dann in Anzündverbindung kommen, wenn sich Beschleunigungsfühler und Rohrfühler gleichzeitig in Endsicherungsstellung befinden, dadurch gekennzeichnet, daß der Rohrfühler (14) in seiner Sicherheitsstellung im Zündweg zwischen Verzögerungsstück (10) und Wirkladung liegt und diesen Zündweg sperrt, wobei der Rohrfühler (14) durch den in Sicherheitsstellung befindlichen Beschleunigungsfühler und bei in Abschußrohr befindlichem Geschoß zusätzlich durch die Abschußrohrwandung (20) in seiner Sicherheitsstellung arretiert ist, und daß ein zweites, ebenfalls beim Abschuß anzündbares, pyrotechnisches Verzögerungsstück (11) vorgesehen ist, das eine kürzere Verzögerungszeit als das erste Verzögerungsstück (10) aufweist und das nach Ablauf seiner Verzögerungszeit den Rohrfühler (14) durch Gasdruck in dessen Endsicherungsstellung bewegt.Arrangement for preventing premature ignition of an active charge of a projectile, which is fired by an ejection charge from a launch tube, to be ignited by an adjustable delay igniter, with a pyrotechnic delay piece, which in turn ignites the active charge, an acceleration sensor located in a safety position, which is located at Acceleration of the projectile to a predetermined firing speed due to its inertia against the firing direction in a final securing position, and a pipe sensor displaceable transversely to the firing direction, which can be brought from its safety position within the projectile shell into a final securing position, in which it projects laterally beyond the projectile jacket, with the decelerator and Active charge can only be ignited if the acceleration sensor and pipe sensor are in the final securing position at the same time, dad characterized by the fact that the pipe sensor (14) is in its safety position in the ignition path between the delay element (10) and the active charge and blocks this ignition path, the pipe sensor (14) by the acceleration sensor located in the safety position and, in the case of a projectile located in the projectile tube, also through the launch tube wall ( 20) is locked in its safety position, and that a second pyrotechnic delay element (11), which can also be ignited when fired, is provided, which has a shorter delay time than the first delay element (10) and which, after its delay time has passed, the tube sensor (14) Gas pressure moved to its final securing position. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß im ersten Verzögerungsstück (10) ein Schlagbolzen (12) nachgeschaltet und der Wirkladung ein Schlagzündhütchen (16) vorgeschaltet ist, wobei die Schlagbolzenspitze (12a) auf das Zündhütchen (16) gerichtet ist und der Rohrfühler (14) sich in Sicherheitsstellung zwischen Schlagbolzenspitze (12a) und Schlagzündhütchen (16) befindet oder andersartig den Schlagbolzen in der Ausgangsstellung fixiert.Arrangement according to Claim 1, characterized in that a firing pin (12) is connected downstream in the first delay piece (10) and a firing primer (16) is connected upstream of the active charge, the firing pin tip (12a) being directed towards the primer (16) and the pipe sensor ( 14) is in the safety position between the firing pin tip (12a) and firing cap (16) or otherwise fixes the firing pin in the starting position. Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die beiden Verzögerungsstücke (10, 11) mit einem verstärkten Druckausgang versehen sind.Arrangement according to claim 1 or 2, characterized in that the two delay pieces (10, 11) are provided with a reinforced pressure outlet. Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß beiden Verzögerungsstücken (10, 11) jeweils ein breiteres, pyrotechnisches Element mit starker Gasentwicklung nachgeschaltet ist.Arrangement according to claim 1 or 2, characterized in that the two delay pieces (10, 11) are each followed by a wider, pyrotechnic element with strong gas evolution. Anordnung nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß der Rohrfühler (14) und der Beschleunigungsfühler (18) in ihrer Sicherheitsstellung jeweils durch elastische Rasten (19) fixiert sind.Arrangement according to one of claims 1-4, characterized in that the pipe sensor (14) and the acceleration sensor (18) are each fixed in their safety position by elastic catches (19). Anordnung nach Anspruch 5, dadurch gekennzeichnet, daß der Beschleunigungsfühler (18) zusätzlich in seiner Endsicherungsstellung durch Rasten (19) fixierbar ist.Arrangement according to claim 5, characterized in that the acceleration sensor (18) can also be fixed in its final securing position by means of catches (19). Anordnung nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß beide Verzögerungsstücke (10, 11) durch die heißen Abgase der Ausstoßladung anzündbar sind.Arrangement according to one of claims 1-6, characterized in that both delay pieces (10, 11) can be ignited by the hot exhaust gases of the exhaust charge.
EP91120861A 1991-02-20 1991-12-04 Safety device for barrel launched projectiles Expired - Lifetime EP0499701B1 (en)

Applications Claiming Priority (2)

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DE4105271A DE4105271C1 (en) 1991-02-20 1991-02-20
DE4105271 1991-02-20

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EP0499701A1 true EP0499701A1 (en) 1992-08-26
EP0499701B1 EP0499701B1 (en) 1995-05-17

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US (1) US5159150A (en)
EP (1) EP0499701B1 (en)
JP (1) JP2501705B2 (en)
CA (1) CA2061426C (en)
DE (2) DE4105271C1 (en)
DK (1) DK0499701T3 (en)
NO (1) NO174906C (en)

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US7387156B2 (en) 2005-11-14 2008-06-17 Halliburton Energy Services, Inc. Perforating safety system

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DE19651974C1 (en) * 1996-12-13 1998-06-10 Buck Chem Tech Werke Safety device used in pyrotechnics for preventing premature ignition
DE19926754C2 (en) * 1999-06-11 2001-08-23 Buck Neue Technologien Gmbh Safety device for ammunition with an electrochemical cell as an energy source
DE102011105864A1 (en) * 2011-06-27 2012-12-27 Rheinmetall Waffe Munition Gmbh Safety device e.g. two-stage safety device, for cartridge ammunition, has ignition element initiated during acceleration process, where initiation of effect load arranged above ignition discharge opening takes place over ignition element
FR2981443B1 (en) * 2011-10-17 2013-11-29 Sme GAS GENERATOR PROVIDED WITH SAFETY BODY FOR SLOW HEATING CASES

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Also Published As

Publication number Publication date
JPH04317000A (en) 1992-11-09
DK0499701T3 (en) 1995-10-09
CA2061426C (en) 1996-04-30
DE59105529D1 (en) 1995-06-22
NO920087L (en) 1992-08-21
DE4105271C1 (en) 1992-07-16
JP2501705B2 (en) 1996-05-29
NO174906B (en) 1994-04-18
CA2061426A1 (en) 1992-08-21
EP0499701B1 (en) 1995-05-17
NO920087D0 (en) 1992-01-07
NO174906C (en) 1994-07-27
US5159150A (en) 1992-10-27

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