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EP0800053B1 - Functioning testing device for an ammunition launcher - Google Patents

Functioning testing device for an ammunition launcher Download PDF

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Publication number
EP0800053B1
EP0800053B1 EP97400518A EP97400518A EP0800053B1 EP 0800053 B1 EP0800053 B1 EP 0800053B1 EP 97400518 A EP97400518 A EP 97400518A EP 97400518 A EP97400518 A EP 97400518A EP 0800053 B1 EP0800053 B1 EP 0800053B1
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EP
European Patent Office
Prior art keywords
test
measurement
test device
launcher
electronics
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 - Lifetime
Application number
EP97400518A
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German (de)
French (fr)
Other versions
EP0800053A1 (en
Inventor
Jérôme Loison
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.)
Giat Industries SA
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Giat Industries SA
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Filing date
Publication date
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Publication of EP0800053A1 publication Critical patent/EP0800053A1/en
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Publication of EP0800053B1 publication Critical patent/EP0800053B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/58—Electric firing mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B35/00—Testing or checking of ammunition

Definitions

  • the technical field of the invention is that of devices for testing the proper functioning of a ammunition launcher.
  • launch tubes are frequently used to deploy ammunition such as smoke grenades or anti-personnel.
  • These launch tubes generally carry means for supply of electrical energy which cooperate with means receivers of electrical energy carried by ammunition.
  • These means could be, for example, contacts electric or an inductive system (such as that described by FR2438820) or a capacitive system (such as described by patent FR2593908).
  • the means of energy supply lead to the ammunition an electric current intended in particular for ensure the firing of a propellant ejection charge of the ammunition out of the tube.
  • the firing trigger implements a current whose intensity must be (for reasons of safety) of at least 3 amps for at least 15 milliseconds.
  • the patent US5050501 describes a device for testing launcher that has the form of ammunition. This device does not not the measurement of an intensity supplied by the tube but allows only to visualize the supply of a current of operation. In addition it incorporates a battery ensuring the power supply of the display means of the good operation.
  • test device allows a simple, fast and reliable verification of correct operation of the launcher.
  • the subject of the invention is a device allowing to test the proper functioning of a launcher consisting of a tube capable of receiving ammunition and inside which means are provided for supplying electrical energy to ammunition intended in particular to allow its setting fire, device consisting of a body having substantially the form of ammunition and comprising receiving means of electrical energy cooperating with the means of supply energy from the launch tube, receiving means connected to a test electronics inside the body, device characterized in that the test electronics are supplied with energy by the starter tube through energy receiving means.
  • the test electronics may include at least minus a capacity which is charged with energy by the launcher, capacity ensuring the electrical supply of the test.
  • the test electronics includes at least a first measurement channel making it possible to check that the intensity of the current received from the starter tube during of the firing is greater than a minimum intensity for a minimum duration.
  • the test electronics includes at least a second measurement channel allowing check that the intensity which is received from the starter tube of permanently outside the firing is less than maximum intensity.
  • test electronics include a electronic power switch for switching the current supplied by the energy receiving means electric to one or other of the measurement channels.
  • the power switch closing time will be chosen at least equal to the minimum duration.
  • the device advantageously includes a switch manual, carried by the body of the device, and allowing select one or other of the measurement channels.
  • the measurement result can be given by a display attached to the body.
  • the test device may include a sequencer ensuring the sequencing of switching operations, measurement and display of the measurement result.
  • test device 1 according to the invention is shown placed in a tube ammunition launcher 2.
  • the launcher tube 2 is integral with a wall 3 of a armored vehicle and it is closed at its rear by a bottom 4 (screwed or welded to the tube) which carries means 5 of supply of electrical energy.
  • These means are constituted here by a coaxial connector comprising a central pin 5a and a crown peripheral 5b, separated by an insulator 5c.
  • Such a connector is shown here only for Indicative because it does not constitute the subject of the invention.
  • the test device 1 has the external shape and the size of real ammunition, which facilitates its storage and handling.
  • It consists of a body comprising an envelope tubular 6 closed by a cover 7 and a base 8, fixed to the envelope 6 for example by screws (not shown).
  • the base 8 carries energy receiving means electric 9 which are intended to cooperate with the means of 5 energy supply from the starter tube.
  • These means are here constituted by a coaxial connector having a central pin 9a and a crown peripheral 9b separated by an insulator 9c.
  • test device In the case of inductive means of transmission, the test device would carry a take-up reel which would find in inductive coupling with the emitting coil of the launcher tube.
  • the cover 7 carries a manual switch with two positions 10, as well as a means of displaying the result of the test, means constituted here by two indicator lights 11a, 11b (diodes LED) of different colors (Green and Red).
  • the cover 7 is set back at inside the envelope 6, this in order to ensure the protection of manual switch 10 and displays 11a, 11b.
  • the body of the test device contains a card electronic carrying an electronic test circuit 12 which is connected to the contacts 9a, 9b of the connector 9 by the conductors 14a, 14b as well as the manual switch 10 and the LEDs 11a, 11b.
  • All the free space inside the body of the device is filled with an insulating and shock absorbing plastic material 13 like a coating resin.
  • the filling material is poured into the envelope 6 after positioning of circuit 12 and installation of electrical connections.
  • the cover 7 is then fixed to the envelope by an appropriate connecting means not shown (e.g. screws).
  • FIG. 2 is a block diagram of the circuit test electronics 12.
  • One of the contacts 9b is the common point for the whole of the circuit, the other contact 9a supplies a capacitor 15 which is intended to supply energy to the entire circuit 12.
  • test device does not contain no energy source (battery, battery) likely to degrade or discharge during storage.
  • energy source battery, battery
  • the energy needed to the operation of the circuits is borrowed from the network of on board the vehicle at the time of the test and stored in the capacity 15.
  • the test circuit includes a first measurement channel 16 and a second measurement channel 17.
  • the current supplied by the contacts is applied to a power switch 18 which has the function of switching the current supplied by the contacts in one or other of the measurement channels during the time required for measurement.
  • This switch is constituted for example by a transistor of power.
  • Each measurement channel 16,17 consists of a sensor current of known type which performs a measurement of intensity by measuring the voltage across a calibrated resistance.
  • These sensors can be controlled by a control signal which triggers the start of the measurement and they provide a voltage representative of the measured current.
  • the selection of the measurement to be carried out and therefore of the channel measurement to be activated is carried out via the manual switch 10.
  • the first measurement channel 16 is intended to measure the firing current (I) which to be sufficient (allow ammunition) must be greater than one minimum intensity Im (of the order of 3 amperes) during one minimum duration Tm (of the order of 15 milliseconds).
  • a first comparator 21 makes it possible to compare the value measured at a setpoint supplied by a reference circuit of voltage 20 which is composed for example of a diode of voltage reference associated with a potentiometric divider.
  • the duration Tm of the measurement is obtained by a sequencer 19 of known type which includes a quartz oscillator and a counter.
  • the signal resulting from the comparison between the measurement and the setpoint is sampled by the oscillator of the sequencer 19 to increment a counter 25, the sampling will for example be carried out using a AND logic gate.
  • the counter does not increment each time clock slot only if the comparator provides a signal logic "1" signifying that the measured current is correct.
  • a outputs of counter 25 which goes to a logic level "1" for a sufficient counting level taking into account the duration Tm (therefore when the current measured was correct during the duration Tm).
  • the display circuit 22 is controlled by the sequencer 19 and it ensures the lighting of one or other of the Led displays (11a or 11b) depending on the signal supplied by the counter 25 at the end of the measurement time Tm (level “1" provided by the counter 25 controls the lighting of the green LED, the signal "0", the red LED lights up).
  • the second measurement channel 17 has a similar operation. It is intended to measure the safety current which circulates in the ammunition when it is placed in the tube and when firing is not requested. To be correct (do not cause inadvertent ignition) this current (i) must not exceed a maximum value i M (i M of the order of 100 milliamps).
  • Another voltage reference circuit 23 (mounting potentiometer) generates a voltage setpoint which is image of the maximum intensity value iM.
  • a second comparator 24 compares this value with the measured value by measurement circuit 17 and provides a signal which is sampled by the sequencer 19 oscillator to increment the counter 25, which delivers the control signal of the display circuit 22.
  • the power switch 18, as well as the measures 16 and 17 and the display circuit 22, are controlled by the sequencer 19 which, like a microprocessor, ensures the sequencing of different operations.
  • Figure 3a is a timing diagram which represents the temporal sequence of operations when the first measurement channel is chosen.
  • the user who installed the ammunition can first check that the vehicle's electrical system correctly detects the presence of the test ammunition (ignition an ammunition presence indicator on its control console).
  • test circuit 16 After approximately 550 milliseconds (time required to stabilization of internal functions), the test circuit 16, controlled by the sequencer 19, performs the measurement (time slot 27).
  • the display of the red or green indicator is controlled by the sequencer 19 (slot 28).
  • This display persists for 1 to 2 seconds after release of the firing button. This duration corresponds to the discharge of the capacitor 15 in the organs of display (Led 11a or 11b).
  • Figure 3b is a timing diagram which represents the temporal sequence of operations when the second measurement channel is chosen.
  • the user has set the manual switch 10 to the position corresponding to the safety current measurement.
  • the device then uses the energy supplied by the tube launch to load capacity 15.
  • test circuit 17, controlled by the sequencer 19 performs the measurement of the safety current (slot 30), and this during a measurement time Tm.
  • Button release detection is performed by another comparator circuit (not shown in the diagram of Figure 2) and which detects the disappearance of the energy supplied by the launch tube.
  • the display of the red or green indicator is controlled by the sequencer 19 (slot 31).
  • the display persists for one certain duration corresponding to the discharge of the capacitor 15 in the display devices (LED 11a or 11b).
  • test device allows to carry out in an extremely simple way all the launcher test operations.
  • the only action requested of the operator is to press the firing button and this as well for testing the firing current as for that of the safety current.
  • the measurement result is presented to him in a simple way by the two LEDs.
  • the test device is implemented as a normal ammunition and is not more bulky than this one, which allows it to be carried in all vehicles.
  • test device with only one measurement channel (e.g. firing current).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Eye Examination Apparatus (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

The test unit, designed to determine the correct functioning of a launch tube (2) with a system (5) for feeding electricity to the missile to fire it, consists of a housing (6,7,8) in the shape of a missile, equipped with electrical energy receiving elements (9) to interact with the feed system (5) and containing an electronic tester (12). The electronic tester (12) contains at least one capacitance which is charged with electricity by the launch tube and a measuring circuit to verify that the current received from the launch tube for firing is above a minimal intensity for a minimum period of time. A second circuit verifies that the electricity received from the launch tube outside the firing period is below a set maximum level.

Description

Le domaine technique de l'invention est celui des dispositifs permettant de tester le bon fonctionnement d'un lanceur de munition.The technical field of the invention is that of devices for testing the proper functioning of a ammunition launcher.

Pour assurer la protection rapprochée des véhicules blindés, on utilise fréquemment des tubes lanceurs permettant de déployer des munitions telles que des grenades fumigènes ou antipersonnel.To ensure close protection of vehicles armored, launch tubes are frequently used to deploy ammunition such as smoke grenades or anti-personnel.

Ces tubes lanceurs portent généralement des moyens de fourniture d'énergie électrique qui coopèrent avec des moyens récepteurs d'énergie électrique portés par la munition.These launch tubes generally carry means for supply of electrical energy which cooperate with means receivers of electrical energy carried by ammunition.

Ces moyens pourront être par exemple des contacts électriques ou bien un système inductif (tel celui décrit par le brevet FR2438820) ou encore un système capacitif (tel que décrit par le brevet FR2593908).These means could be, for example, contacts electric or an inductive system (such as that described by FR2438820) or a capacitive system (such as described by patent FR2593908).

Les moyens de fourniture d'énergie conduisent à la munition un courant électrique destiné en particulier à assurer la mise à feu d'une charge propulsive d'éjection de la munition hors du tube.The means of energy supply lead to the ammunition an electric current intended in particular for ensure the firing of a propellant ejection charge of the ammunition out of the tube.

Ils permettent aussi de vérifier la présence d'une munition dans le lanceur et éventuellement de déterminer le type de munition qui est présent.They also make it possible to verify the presence of a ammunition in the launcher and possibly determine the type of ammunition that is present.

Il est très difficile aujourd'hui d'assurer de façon simple, rapide et fiable le contrôle du bon fonctionnement de tels lanceurs.It is very difficult today to insure simple, fast and reliable checking the proper functioning of such launchers.

En effet, d'une part, en l'absence de tir, il doit circuler dans la munition un courant inférieur à 100 milliampères, courant permettant de détecter la présence de la munition et ne devant pas entraíner un tir intempestif.On the one hand, in the absence of a shot, it must circulate in the ammunition a current lower than 100 milliamperes, current to detect the presence of the ammunition and not to cause untimely shooting.

D'autre part, le déclenchement de tir met en oeuvre un courant dont l'intensité doit être (pour des raisons de sécurité) d'au moins 3 ampères pendant au moins 15 millisecondes.On the other hand, the firing trigger implements a current whose intensity must be (for reasons of safety) of at least 3 amps for at least 15 milliseconds.

Le bon fonctionnement du lanceur n'est effectif que lorsque ces deux conditions sont respectées.The proper functioning of the launcher is only effective when these two conditions are met.

Les moyens de contrôle connus mettent en oeuvre des bancs de mesure d'intensité qui sont encombrants, coûteux et difficiles à utiliser par des personnels non formés.Known control means use benches bulky, expensive and difficult to use by untrained personnel.

D'autres moyens de contrôles classiques utilisent une lampe test qui permet de vérifier la fourniture de courant par le tube lanceur.Other conventional control means use a test lamp to check the current supply by the starter tube.

Cependant ces derniers moyens ne permettent pas de vérifier le bon fonctionnement du lanceur, c'est à dire la conformité de ses deux intensités d'emploi (repos / tir) avec les valeurs normales.However, these latter means do not allow check the correct functioning of the launcher, i.e. the conformity of its two intensities of use (rest / shooting) with normal values.

Le brevet US5050501 décrit un dispositif de test de lanceur qui a la forme d'une munition. Ce dispositif n'assure pas la mesure d'une intensité fournie par le tube mais permet uniquement de visualiser la fourniture d'un courant de fonctionnement. De plus il incorpore une pile assurant l'alimentation en énergie des moyens de visualisation du bon fonctionnement.The patent US5050501 describes a device for testing launcher that has the form of ammunition. This device does not not the measurement of an intensity supplied by the tube but allows only to visualize the supply of a current of operation. In addition it incorporates a battery ensuring the power supply of the display means of the good operation.

C'est le but de l'invention que de proposer un dispositif de test ne présentant pas de tels inconvénients.It is the object of the invention to propose a device no such drawbacks.

Ainsi le dispositif de test selon l'invention permet une vérification simple, rapide et fiable du bon fonctionnement du lanceur.Thus the test device according to the invention allows a simple, fast and reliable verification of correct operation of the launcher.

Il peut être mis en oeuvre par un personnel non qualifié et il est à la fois peu encombrant et peu coûteux.It can be implemented by unqualified personnel and it is both space-saving and inexpensive.

Il peut être stocké durant de longues périodes sans perdre sa précision et peut être conservé dans tout véhicule blindé en plus de la dotation en munitions.It can be stored for long periods without lose accuracy and can be stored in any vehicle armored in addition to the ammunition endowment.

Ainsi l'invention a pour objet un dispositif permettant de tester le bon fonctionnement d'un lanceur constitué d'un tube pouvant recevoir une munition et à l'intérieur duquel sont disposés des moyens de fourniture d'énergie électrique à la munition destinés en particulier à permettre sa mise à feu, dispositif constitué par un corps ayant sensiblement la forme d'une munition et comportant des moyens récepteurs d'énergie électrique coopérant avec les moyens de fourniture d'énergie du tube lanceur, moyens récepteurs reliés à une électronique de test disposée à l'intérieur du corps, dispositif caractérisé en ce que l'électronique de test est alimentée en énergie par le tube lanceur au travers des moyens récepteurs d'énergie.Thus the subject of the invention is a device allowing to test the proper functioning of a launcher consisting of a tube capable of receiving ammunition and inside which means are provided for supplying electrical energy to ammunition intended in particular to allow its setting fire, device consisting of a body having substantially the form of ammunition and comprising receiving means of electrical energy cooperating with the means of supply energy from the launch tube, receiving means connected to a test electronics inside the body, device characterized in that the test electronics are supplied with energy by the starter tube through energy receiving means.

En particulier, l'électronique de test peut comporter au moins une capacité qui est chargée en énergie par le lanceur, capacité assurant l'alimentation électrique du dispositif de test.In particular, the test electronics may include at least minus a capacity which is charged with energy by the launcher, capacity ensuring the electrical supply of the test.

Selon une autre caractéristique, l'électronique de test comporte au moins une première voie de mesure permettant de vérifier que l'intensité du courant reçu du tube lanceur lors de la mise à feu est supérieure à une intensité minimale pendant une durée minimale.According to another characteristic, the test electronics includes at least a first measurement channel making it possible to check that the intensity of the current received from the starter tube during of the firing is greater than a minimum intensity for a minimum duration.

Selon une autre caractéristique, l'électronique de test comporte au moins une deuxième voie de mesure permettant de vérifier que l'intensité qui est reçue du tube lanceur de façon permanente en dehors de la mise à feu est inférieure à une intensité maximale.According to another characteristic, the test electronics includes at least a second measurement channel allowing check that the intensity which is received from the starter tube of permanently outside the firing is less than maximum intensity.

Avantageusement, l'électronique de test comprend un commutateur électronique de puissance permettant de commuter le courant fourni par les moyens récepteurs d'énergie électrique vers l'une ou l'autre des voies de mesure.Advantageously, the test electronics include a electronic power switch for switching the current supplied by the energy receiving means electric to one or other of the measurement channels.

Le temps de fermeture du commutateur de puissance sera choisi au moins égal à la durée minimale.The power switch closing time will be chosen at least equal to the minimum duration.

Le dispositif comporte avantageusement un commutateur manuel, porté par le corps du dispositif, et permettant de sélectionner l'une ou l'autre des voies de mesures.The device advantageously includes a switch manual, carried by the body of the device, and allowing select one or other of the measurement channels.

Le résultat des mesures peut être donné par un afficheur solidaire du corps.The measurement result can be given by a display attached to the body.

Le dispositif de test pourra comporter un séquenceur assurant le séquencement des opérations de commutation, de mesure et d'affichage du résultat de la mesure.The test device may include a sequencer ensuring the sequencing of switching operations, measurement and display of the measurement result.

L'invention sera mieux comprise à la lecture de la description qui va suivre d'un mode particulier de réalisation, description faite en référence aux dessins annexés et dans lesquels:

  • la figure 1 est un vue en coupe d'un dispositif de test selon l'invention mis en place dans un tube lanceur,
  • la figure 2 est un schéma synoptique du dispositif de test selon l'invention,
  • les figures 3a et 3b sont des chronogrammes montrant les séquences de fonctionnement, respectivement pour les mesures des courants de mise à feu et de sécurité.
The invention will be better understood on reading the description which follows of a particular embodiment, description made with reference to the appended drawings and in which:
  • FIG. 1 is a sectional view of a test device according to the invention placed in a launch tube,
  • FIG. 2 is a block diagram of the test device according to the invention,
  • Figures 3a and 3b are timing diagrams showing the operating sequences, respectively for the measurement of firing and safety currents.

En se reportant à la figure 1, un dispositif de test 1 selon l'invention est représenté mis en place dans un tube lanceur 2 de munition.Referring to Figure 1, a test device 1 according to the invention is shown placed in a tube ammunition launcher 2.

Le tube lanceur 2 est solidaire d'une paroi 3 d'un véhicule blindé et il est fermé à sa partie arrière par un fond 4 (vissé ou soudé au tube) qui porte des moyens 5 de fourniture d'énergie électrique. The launcher tube 2 is integral with a wall 3 of a armored vehicle and it is closed at its rear by a bottom 4 (screwed or welded to the tube) which carries means 5 of supply of electrical energy.

Ces moyens sont constitués ici par un connecteur coaxial comportant une broche centrale 5a et une couronne périphérique 5b, séparées par un isolant 5c.These means are constituted here by a coaxial connector comprising a central pin 5a and a crown peripheral 5b, separated by an insulator 5c.

Un tel connecteur n'est représenté ici qu'à titre Indicatif car il ne constitue pas l'objet de l'invention.Such a connector is shown here only for Indicative because it does not constitute the subject of the invention.

Il peut être remplacé par tous types de contacts électriques ayant une autre structure (par exemple des contacts à baïonnette) ou encore par un moyen de fourniture d'énergie de nature différente, formé par exemple par une bobine d'induction.It can be replaced by all types of contacts having another structure (e.g. bayonet contacts) or by a means of supply energy of different nature, formed for example by a induction coil.

Le dispositif de test 1 a la forme externe et l'encombrement d'une munition réelle, ce qui facilite son stockage et sa manipulation.The test device 1 has the external shape and the size of real ammunition, which facilitates its storage and handling.

Il est constitué par un corps comprenant une enveloppe tubulaire 6 fermée par un couvercle 7 et un culot 8, fixés à l'enveloppe 6 par exemple par des vis (non représentées).It consists of a body comprising an envelope tubular 6 closed by a cover 7 and a base 8, fixed to the envelope 6 for example by screws (not shown).

Le culot 8 porte des moyens récepteurs d'énergie électrique 9 qui sont destinés à coopérer avec les moyens de fourniture d'énergie 5 du tube lanceur.The base 8 carries energy receiving means electric 9 which are intended to cooperate with the means of 5 energy supply from the starter tube.

Ces moyens sont ici constitués par un connecteur coaxial présentant une broche centrale 9a et une couronne périphérique 9b séparées par un isolant 9c.These means are here constituted by a coaxial connector having a central pin 9a and a crown peripheral 9b separated by an insulator 9c.

Dans le cas de moyens de transmission inductifs, le dispositif de test porterait une bobine réceptrice qui se trouverait en couplage inductif avec la bobine émettrice du tube lanceur.In the case of inductive means of transmission, the test device would carry a take-up reel which would would find in inductive coupling with the emitting coil of the launcher tube.

Le couvercle 7 porte un commutateur manuel à deux positions 10, ainsi qu'un moyen d'affichage du résultat du test, moyen constitué ici par deux voyants 11a, 11b (diodes LED) de couleurs différentes (Verte et Rouge).The cover 7 carries a manual switch with two positions 10, as well as a means of displaying the result of the test, means constituted here by two indicator lights 11a, 11b (diodes LED) of different colors (Green and Red).

Avantageusement le couvercle 7 est disposé en retrait à l'intérieur de l'enveloppe 6, cela afin d'assurer la protection du commutateur manuel 10 et des afficheurs 11a, 11b.Advantageously, the cover 7 is set back at inside the envelope 6, this in order to ensure the protection of manual switch 10 and displays 11a, 11b.

Le corps du dispositif de test renferme une carte électronique portant un circuit électronique de test 12 qui est relié aux contacts 9a, 9b du connecteur 9 par les conducteurs 14a,14b ainsi qu'au commutateur manuel 10 et aux voyants 11a, 11b.The body of the test device contains a card electronic carrying an electronic test circuit 12 which is connected to the contacts 9a, 9b of the connector 9 by the conductors 14a, 14b as well as the manual switch 10 and the LEDs 11a, 11b.

Tout l'espace libre à l'intérieur du corps du dispositif est rempli d'un matériau plastique 13 isolant et amortisseur tel une résine d'enrobage.All the free space inside the body of the device is filled with an insulating and shock absorbing plastic material 13 like a coating resin.

Le matériau de remplissage est versé dans l'enveloppe 6 après positionnement du circuit 12 et mise en place des liaisons électriques. Le couvercle 7 est ensuite fixé à l'enveloppe par un moyen de liaison approprié non représenté (par exemple des vis).The filling material is poured into the envelope 6 after positioning of circuit 12 and installation of electrical connections. The cover 7 is then fixed to the envelope by an appropriate connecting means not shown (e.g. screws).

La figure 2 est un schéma synoptique du circuit électronique de test 12.Figure 2 is a block diagram of the circuit test electronics 12.

Un des contacts 9b est le point commun à l'ensemble du circuit, l'autre contact 9a alimente une capacité 15 qui est destinée à fournir de l'énergie à l'ensemble du circuit 12.One of the contacts 9b is the common point for the whole of the circuit, the other contact 9a supplies a capacitor 15 which is intended to supply energy to the entire circuit 12.

Ainsi le dispositif de test selon l'invention ne contient aucune source d'énergie (pile, batterie) susceptible de se dégrader ou décharger lors du stockage. L'énergie nécessaire au fonctionnement des circuits est empruntée au réseau de bord du véhicule au moment du test et stockée dans la capacité 15.Thus the test device according to the invention does not contain no energy source (battery, battery) likely to degrade or discharge during storage. The energy needed to the operation of the circuits is borrowed from the network of on board the vehicle at the time of the test and stored in the capacity 15.

Il en résulte une excellente tenue au stockage du dispositif de test et une simplification de la logistique.This results in excellent storage behavior of the test device and simplification of logistics.

Le circuit de test comprend une première voie de mesure 16 et une deuxième voie de mesure 17.The test circuit includes a first measurement channel 16 and a second measurement channel 17.

Le courant fourni par les contacts est appliqué à un commutateur de puissance 18 qui a pour fonction de commuter le courant fourni par les contacts dans l'une ou l'autre des voies de mesure durant le temps nécessaire à la mesure. Ce commutateur est constitué par exemple par un transistor de puissance.The current supplied by the contacts is applied to a power switch 18 which has the function of switching the current supplied by the contacts in one or other of the measurement channels during the time required for measurement. This switch is constituted for example by a transistor of power.

Chaque voie de mesure 16,17 est constituée par un capteur de courant de type connu qui réalise une mesure de l'intensité par la mesure de la tension aux bornes d'une résistance calibrée.Each measurement channel 16,17 consists of a sensor current of known type which performs a measurement of intensity by measuring the voltage across a calibrated resistance.

Ces capteurs sont pilotables par un signal de commande qui déclenche le début de la mesure et ils fournissent une tension représentative de l'intensité mesurée.These sensors can be controlled by a control signal which triggers the start of the measurement and they provide a voltage representative of the measured current.

La sélection de la mesure à effectuer et donc de la voie de mesure à activer s'effectue par l'intermédiaire du commutateur manuel 10.The selection of the measurement to be carried out and therefore of the channel measurement to be activated is carried out via the manual switch 10.

La première voie de mesure 16 est destinée à mesurer le courant de mise à feu (I) qui pour être suffisant (permettre la mise à feu de la munition) doit être supérieur à une intensité minimale Im (de l'ordre de 3 ampères) pendant une durée minimale Tm (de l'ordre de 15 millisecondes).The first measurement channel 16 is intended to measure the firing current (I) which to be sufficient (allow ammunition) must be greater than one minimum intensity Im (of the order of 3 amperes) during one minimum duration Tm (of the order of 15 milliseconds).

Un premier comparateur 21 permet de comparer la valeur mesurée à une consigne fournie par un circuit de référence de tension 20 qui est composé par exemple d'une diode de référence de tension associée à un diviseur potentiométrique.A first comparator 21 makes it possible to compare the value measured at a setpoint supplied by a reference circuit of voltage 20 which is composed for example of a diode of voltage reference associated with a potentiometric divider.

La durée Tm de la mesure est obtenue par un séquenceur 19 de type connu qui comprend un oscillateur à quartz et un compteur.The duration Tm of the measurement is obtained by a sequencer 19 of known type which includes a quartz oscillator and a counter.

Durant la durée Tm, le signal résultant de la comparaison entre la mesure et la consigne est échantillonné par l'oscillateur du séquenceur 19 pour incrémenter un compteur 25, l'échantillonnage sera par exemple réalisé à l'aide d'une porte logique ET. Le compteur ne s'incrémente donc à chaque créneau d'horloge que si le comparateur fournit un signal logique "1" signifiant que le courant mesuré est correct.During the duration Tm, the signal resulting from the comparison between the measurement and the setpoint is sampled by the oscillator of the sequencer 19 to increment a counter 25, the sampling will for example be carried out using a AND logic gate. The counter does not increment each time clock slot only if the comparator provides a signal logic "1" signifying that the measured current is correct.

Pour commander un circuit d'affichage 22, on utilise une des sorties du compteur 25 qui passe à un niveau logique "1" pour un niveau de comptage suffisant compte tenu de la durée Tm (donc lorsque le courant mesuré a été correct pendant la durée Tm).To control a display circuit 22, a outputs of counter 25 which goes to a logic level "1" for a sufficient counting level taking into account the duration Tm (therefore when the current measured was correct during the duration Tm).

Le circuit d'affichage 22 est piloté par le séquenceur 19 et il assure l'allumage de l'un ou l'autre des afficheurs Led (11a ou 11b) en fonction du signal fourni par le compteur 25 à l'issue de la durée de mesure Tm (le niveau "1" fourni par le compteur 25 commande l'allumage de la Led verte, le signal "0", l'allumage de la Led rouge).The display circuit 22 is controlled by the sequencer 19 and it ensures the lighting of one or other of the Led displays (11a or 11b) depending on the signal supplied by the counter 25 at the end of the measurement time Tm (level "1" provided by the counter 25 controls the lighting of the green LED, the signal "0", the red LED lights up).

La deuxième voie de mesure 17 a un fonctionnement analogue. Elle est destinée à mesurer le courant de sécurité qui circule dans la munition lorsqu'elle est mise en place dans le tube et que la mise à feu n'est pas demandée. Pour être correct (ne pas provoquer de mise à feu intempestive) ce courant (i) ne doit pas dépasser une valeur maximale iM (iM de l'ordre de 100 milliampères).The second measurement channel 17 has a similar operation. It is intended to measure the safety current which circulates in the ammunition when it is placed in the tube and when firing is not requested. To be correct (do not cause inadvertent ignition) this current (i) must not exceed a maximum value i M (i M of the order of 100 milliamps).

Une autre circuit de référence de tension 23 (montage potentiomètrique) génère une consigne de tension qui est image de la valeur de l'intensité maximale iM. Un deuxième comparateur 24 compare cette valeur avec la valeur mesurée par le circuit de mesure 17 et fournit un signal qui est échantillonné par l'oscillateur du séquenceur 19 pour incrémenter le compteur 25, qui délivre le signal de commande du circuit d'affichage 22.Another voltage reference circuit 23 (mounting potentiometer) generates a voltage setpoint which is image of the maximum intensity value iM. A second comparator 24 compares this value with the measured value by measurement circuit 17 and provides a signal which is sampled by the sequencer 19 oscillator to increment the counter 25, which delivers the control signal of the display circuit 22.

Le commutateur de puissance 18, ainsi que les voies de mesure 16 et 17 et le circuit d'affichage 22, sont pilotés par le séquenceur 19 qui, tel un microprocesseur, assure le séquencement des différentes opérations.The power switch 18, as well as the measures 16 and 17 and the display circuit 22, are controlled by the sequencer 19 which, like a microprocessor, ensures the sequencing of different operations.

La figure 3a est un chronogramme qui représente l'enchaínement temporel des opérations lorsque la première voie de mesure est choisie.Figure 3a is a timing diagram which represents the temporal sequence of operations when the first measurement channel is chosen.

L'utilisateur qui a mis la munition en place peut tout d'abord vérifier que le circuit électrique du véhicule détecte bien la présence de la munition de test (allumage d'un voyant "présence munition" sur son pupitre de commande).The user who installed the ammunition can first check that the vehicle's electrical system correctly detects the presence of the test ammunition (ignition an ammunition presence indicator on its control console).

Il a choisi la position du commutateur manuel 10 qui correspond au test du courant de mise à feu.He chose the position of manual switch 10 which corresponds to the firing current test.

Il appuie sur le bouton de mise à feu pendant une durée d'au moins 1 seconde (ce qui correspond au créneau 26).It presses the firing button for a duration at least 1 second (which corresponds to time slot 26).

Cette action assure la présence du courant du réseau de bord du véhicule aux contacts du dispositif pendant une durée suffisante pour assurer la charge du condensateur 15.This action ensures the presence of current from the vehicle edge in contact with the device for a period sufficient to charge the capacitor 15.

Au bout d'environ 550 millisecondes (temps nécessaire à la stabilisation des fonctions internes), le circuit de test 16, commandé par le séquenceur 19, réalise la mesure (créneau 27).After approximately 550 milliseconds (time required to stabilization of internal functions), the test circuit 16, controlled by the sequencer 19, performs the measurement (time slot 27).

A l'issue de la durée Tm (15 ms) de ce créneau, l'affichage du voyant rouge ou vert est commandé par le séquenceur 19 (créneau 28).At the end of the duration Tm (15 ms) of this slot, the display of the red or green indicator is controlled by the sequencer 19 (slot 28).

Cet affichage persiste pendant 1 à 2 secondes après le relâchement du bouton de mise à feu. Cette durée correspond à la décharge du condensateur 15 dans les organes de visualisation (Led 11a ou 11b). This display persists for 1 to 2 seconds after release of the firing button. This duration corresponds to the discharge of the capacitor 15 in the organs of display (Led 11a or 11b).

La figure 3b est un chronogramme qui représente l'enchaínement temporel des opérations lorsque la deuxième voie de mesure est choisie.Figure 3b is a timing diagram which represents the temporal sequence of operations when the second measurement channel is chosen.

L'utilisateur a positionné le commutateur manuel 10 sur la position correspondant à la mesure du courant de sécurité.The user has set the manual switch 10 to the position corresponding to the safety current measurement.

Il appuie sur le bouton de mise à feu pendant une durée de l'ordre de 1 sec (créneau 29).It presses the firing button for a duration of the order of 1 sec (slot 29).

Le dispositif utilise alors l'énergie fournie par le tube de lancement pour charger la capacité 15.The device then uses the energy supplied by the tube launch to load capacity 15.

Lorsque l'utilisateur relâche le bouton de mise à feu, le circuit de test 17, commandé par le séquenceur 19, effectue la mesure du courant de sécurité (créneau 30), et cela pendant une durée de mesure Tm.When the user releases the fire button, the test circuit 17, controlled by the sequencer 19, performs the measurement of the safety current (slot 30), and this during a measurement time Tm.

La détection du relâchement du bouton est effectuée par un autre circuit comparateur (non représenté sur le schéma de la figure 2) et qui détecte la disparition de l'énergie fournie par le tube de lancement.Button release detection is performed by another comparator circuit (not shown in the diagram of Figure 2) and which detects the disappearance of the energy supplied by the launch tube.

A l'issue de la durée Tm (15 ms) du créneau 30, l'affichage du voyant rouge ou vert est commandé par le séquenceur 19 (créneau 31). L'affichage persiste pendant une certaine durée correspondant à la décharge du condensateur 15 dans les organes de visualisation (LED 11a ou 11b).At the end of the duration Tm (15 ms) of the slot 30, the display of the red or green indicator is controlled by the sequencer 19 (slot 31). The display persists for one certain duration corresponding to the discharge of the capacitor 15 in the display devices (LED 11a or 11b).

On voit que le dispositif de test selon l'invention permet de réaliser d'une façon extrêmement simple toutes les opérations de test du lanceur.It can be seen that the test device according to the invention allows to carry out in an extremely simple way all the launcher test operations.

La seule action demandée à l'opérateur est d'appuyer sur le bouton de mise à feu et cela aussi bien pour le test du courant de mise à feu que pour celui du courant de sécurité.The only action requested of the operator is to press the firing button and this as well for testing the firing current as for that of the safety current.

Le résultat de la mesure lui est présenté de façon simple par les deux voyants.The measurement result is presented to him in a simple way by the two LEDs.

Le dispositif de test est mis en oeuvre comme une munition normale et n'est pas plus encombrant que celle ci, ce qui autorise son emport dans tous les véhicules.The test device is implemented as a normal ammunition and is not more bulky than this one, which allows it to be carried in all vehicles.

Il ne contient aucune source d'énergie et peut donc être stocké indéfiniment sans perte de performances.It contains no energy sources and can therefore be stored indefinitely without loss of performance.

A titre de variante, il est possible de définir un dispositif de test ne comportant qu'une seule voie de mesure (par exemple le courant de mise à feu).As a variant, it is possible to define a test device with only one measurement channel (e.g. firing current).

Claims (9)

  1. A device (1) to test the functionability of a launcher formed of a tube able to receive a munition and inside which electrical power supply means (5) are arranged for the munition intended in particular to allow it to be fired, said device being constituted by a substantially munition-shaped body (6, 7, 8) incorporating electrical power receiving means (9) co-operating with the electrical supply means (5) of the launcher tube, said receiving means being connected to test electronics (12) placed inside the body, device characterised in that the test electronics (12) are supplied with power by the launcher tube via the power receiving means (9).
  2. A test device according to Claim 1, characterised in that the test electronics (12) incorporate at least one capacitor (15) that is powered by the launcher, said capacitor providing the electrical power for the test device.
  3. A test device according to one of Claims 1 or 2, characterised in that the test electronics (12) incorporate at least a first measurement channel (16) to verify that the intensity of the current received by the launcher tube during firing is greater than a minimal intensity during a minimal duration (Tm).
  4. A test device according to one of Claims 1 to 3, characterised in that the test electronics (12) incorporate at least a second measurement channel (17) to verify that the intensity received by the launcher tube constantly excluding during firing is less than a maximal intensity (iM).
  5. A test device according to one of Claims 3 or 4, characterised in that the test electronics (12) comprise an electronic power switch (18) to switch the power supplied by the electrical power receiving means (9) towards one or other of the measurement channels (16, 17).
  6. A test device according to Claim 5, characterised in that the power switch closure time (18) is at least equal to the minimal duration (Tm).
  7. A test device according to one of Claims 5 or 6, characterised in that it incorporates a manual switch (10), carried on the device's body, enabling one or other of the measurement channels (16, 17) to be selected.
  8. A test device according to one of Claims 1 to 7, characterised in that the measurement result is given by a display (11a, 11b) integral with the body.
  9. A test device according to one of Claim 3 to 8, characterised in that it incorporates a sequencer (19) ensuring the sequencing of the switching, measurement and measurement result display operations.
EP97400518A 1996-04-02 1997-03-07 Functioning testing device for an ammunition launcher Expired - Lifetime EP0800053B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9604115A FR2746911B1 (en) 1996-04-02 1996-04-02 DEVICE FOR TESTING THE OPERATION OF AN AMMUNITION LAUNCHER
FR9604115 1996-04-02

Publications (2)

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EP0800053A1 EP0800053A1 (en) 1997-10-08
EP0800053B1 true EP0800053B1 (en) 2001-11-07

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EP97400518A Expired - Lifetime EP0800053B1 (en) 1996-04-02 1997-03-07 Functioning testing device for an ammunition launcher

Country Status (4)

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EP (1) EP0800053B1 (en)
AT (1) ATE208487T1 (en)
DE (1) DE69707953T2 (en)
FR (1) FR2746911B1 (en)

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RU211274U1 (en) * 2021-12-29 2022-05-30 Федеральное государственное бюджетное образовательное учреждение высшего образования "Амурский государственный университет" Simulator of the transport and launch container for the behavior of vibration-dynamic tests of satellites of the CubeSat 1U-3U standard

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US5050501A (en) * 1991-01-07 1991-09-24 The United States Of America As Represented By The Secretary Of The Army Projected grenade simulator

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RU211274U1 (en) * 2021-12-29 2022-05-30 Федеральное государственное бюджетное образовательное учреждение высшего образования "Амурский государственный университет" Simulator of the transport and launch container for the behavior of vibration-dynamic tests of satellites of the CubeSat 1U-3U standard

Also Published As

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FR2746911A1 (en) 1997-10-03
ATE208487T1 (en) 2001-11-15
DE69707953T2 (en) 2002-05-29
DE69707953D1 (en) 2001-12-13
EP0800053A1 (en) 1997-10-08
FR2746911B1 (en) 1998-05-22

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