FR2764688A1 - ORIENTATED PYROTECHNIC PROJECTILE WITHOUT BLINDING IMPACTS - Google Patents

ORIENTATED PYROTECHNIC PROJECTILE WITHOUT BLINDING IMPACTS Download PDF

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Publication number
FR2764688A1
FR2764688A1 FR9707443A FR9707443A FR2764688A1 FR 2764688 A1 FR2764688 A1 FR 2764688A1 FR 9707443 A FR9707443 A FR 9707443A FR 9707443 A FR9707443 A FR 9707443A FR 2764688 A1 FR2764688 A1 FR 2764688A1
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FR
France
Prior art keywords
projectile
nose
skirt
charge
powder
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.)
Granted
Application number
FR9707443A
Other languages
French (fr)
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FR2764688B1 (en
Inventor
Jean Pierre Siegler
Badava Camara
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.)
Ruggieri SA
Original Assignee
Ruggieri SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ruggieri SA filed Critical Ruggieri SA
Priority to FR9707443A priority Critical patent/FR2764688B1/en
Priority to PCT/FR1998/001262 priority patent/WO1998058226A1/en
Priority to AU82194/98A priority patent/AU8219498A/en
Publication of FR2764688A1 publication Critical patent/FR2764688A1/en
Application granted granted Critical
Publication of FR2764688B1 publication Critical patent/FR2764688B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/76—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/46—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing gases, vapours, powders or chemically-reactive substances
    • F42B12/50—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing gases, vapours, powders or chemically-reactive substances by dispersion

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

The invention concerns a pyrotechnic projectile comprising a body (1) containing a bursting charge (4) and a combustible charge (5) designed to generate a flare effect, characterised in that the projectile body nozzle (2) contains a mass (8) of powder substance with high density to move the projectile centre of gravity towards the front thereof, the bursting of the body (1) and of the nozzle caused by the bursting charge explosion dispersing the high density powder in the atmosphere.

Description

La presente invention concerne un projectile pyrotechnique dont l'orientation est prédéterminée au moment de son explosion. The present invention relates to a pyrotechnic projectile whose orientation is predetermined at the time of its explosion.

I1 existe de nombreuses solutions pour orienter un projectile dans le ciel. La solution la plus connue consiste à réaliser un obus équipé d'ailettes qui lui servent de guidage. Ces engins peuvent être tirés par tir de mortier ou emmanchés au bout d'un canon de fusil; dans ces deux cas, l'accélération au moment du départ et les pressions élevées nécessaires pour obtenir une bonne balistique obligent de réaliser des systèmes de guidage très solides. Cette dernière contrainte amène generalement les constructeurs à utiliser des parties metalliques qui retombent après explosion de l'engin et risquent de provoquer des accidents. There are many solutions for orienting a projectile in the sky. The best known solution consists in making a shell equipped with fins which serve as a guide. These devices can be fired by mortar fire or fitted at the end of a rifle barrel; in these two cases, the acceleration at the time of departure and the high pressures necessary to obtain good ballistics make it necessary to produce very solid guidance systems. This last constraint generally leads manufacturers to use metallic parts which fall back after the machine explodes and risk causing accidents.

Une autre technique pour orienter un projectile consiste à utiliser un engin autopropulsé. Another technique for orienting a projectile is to use a self-propelled object.

Dans ce cas, pour obtenir une balistique précise, l'accélération doit être très importante ce qui oblige d'utiliser des propulseurs de grande taille par rapport à la partie embarquée ou bien de réaliser des enveloppes de propulseurs (corps + tuyère) métalliques qui vont retomber après explosion de l'engin avec les mêmes effets néfastes que dans le cas précédent. In this case, to obtain a precise ballistics, the acceleration must be very important what obliges to use propellants of big size compared to the embarked part or else to realize envelopes of metallic propellants (body + nozzle) which go fall back after the machine explodes with the same harmful effects as in the previous case.

L'invention consiste à réaliser un projectile tiré à partir d'un mortier, qui est orienté dans une direction prédéterminée au moment de son explosion et ne générant pas de retombées contondantes susceptibles de provoquer des dommages aux biens ou aux personnes. The invention consists in producing a projectile fired from a mortar, which is oriented in a predetermined direction at the time of its explosion and does not generate blunt fallout likely to cause damage to property or people.

Elle a donc pour objet un projectile pyrotechnique comprenant un corps contenant une charge d'éclatement et une charge combustible destinée à la création d'un effet d'artifice, caractérisé en ce que le nez du corps de l'engin contient une masse de matière en poudre de forte densité pour déplacer le centre de gravité du projectile vers l'avant de celui-ci, la rupture du corps et du nez provoquée par l'explosion de la charge d'éclatement assurant la dispersion de la poudre dans l'atmosphère. It therefore relates to a pyrotechnic projectile comprising a body containing a bursting charge and a combustible charge intended for the creation of an artifice effect, characterized in that the nose of the body of the device contains a mass of material in high density powder to move the center of gravity of the projectile towards the front of it, the rupture of the body and the nose caused by the explosion of the bursting charge ensuring the dispersion of the powder in the atmosphere .

L'invention sera mieux comprise à l'aide de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels
- la Fig.l est une vue en perspective avec arrachement partiel du projectile pyrotechnique suivant l'invention; et
- la Fig.2 est une vue en coupe à plus grande échelle du projectile pyrotechnique de la figure 1.The invention will be better understood with the aid of the description which follows, given solely by way of example and made with reference to the appended drawings, in which
- Fig.l is a perspective view with partial cutaway of the pyrotechnic projectile according to the invention; and
- Fig.2 is a sectional view on a larger scale of the pyrotechnic projectile of Figure 1.

Le projectile pyrotechnique représenté à la figure 1 comprend un corps tubulaire 1 en matière plastique comprenant une tête 2 et auquel est associee une jupe 3 formant empennage. Dans le corps 1 est logée une charge d'éclatement 4 constituée par exemple de poudre noire au sein de laquelle est disposée une charge combustible 5 qui dans le présent exemple est formée de particules de métal tel que du titane agglomérées. The pyrotechnic projectile shown in Figure 1 comprises a tubular body 1 of plastic comprising a head 2 and which is associated with a skirt 3 forming a tail. In the body 1 is housed a bursting charge 4 consisting for example of black powder within which is disposed a combustible charge 5 which in the present example is formed of particles of metal such as titanium agglomerated.

La charge combustible peut également être formée de particules métalliques non agglomérées judicieusement disposées pour obtenir le motif désiré. The combustible charge can also be formed from non-agglomerated metal particles judiciously arranged to obtain the desired pattern.

Le corps 1 est fermé par un couvercle 6 sur lequel est monté un conteneur 7 de forme tronconique et qui définit le nez du projectile. Ainsi, le couvercle 6 forme la base du conteneur 7. The body 1 is closed by a cover 6 on which is mounted a container 7 of frustoconical shape and which defines the nose of the projectile. Thus, the cover 6 forms the base of the container 7.

Dans le conteneur 7 est disposée une masse 8 de poudre métallique de forte densité, par exemple de la poudre de fer destinée à alourdir la tête du projectile et à déplacer son centre de gravité vers l'avant. In the container 7 is disposed a mass 8 of high density metal powder, for example iron powder intended to make the head of the projectile heavier and to move its center of gravity forward.

Comme représenté à la figure 2, le corps 1 comporte un manchon tubulaire axial 9 venu de matière avec son fond 10 et dans lequel est disposée une composition de retard pyrotechnique 11. As shown in FIG. 2, the body 1 comprises an axial tubular sleeve 9 integrally formed with its bottom 10 and in which a pyrotechnic delay composition 11 is placed.

Le manchon 9 débouche au centre de la jupe 3 formant empennage.  The sleeve 9 opens out at the center of the skirt 3 forming the tail.

Dans la jupe 3 sont ménagées des ouvertures allongées 12 de maintien de la trajectoire du projectile après son lancement. In the skirt 3 are provided elongated openings 12 for maintaining the trajectory of the projectile after its launch.

Le corps tubulaire 1, la jupe 3, le couvercle 6 du corps 1 et le conteneur 7 formant le nez du projectile sont réalisés en matière plastique par exemple en polystyrène et fixés entre eux par collage. The tubular body 1, the skirt 3, the cover 6 of the body 1 and the container 7 forming the nose of the projectile are made of plastic material, for example made of polystyrene and fixed together by gluing.

La jupe 3 est réalisée de façon à présenter une résistance suffisante pour ne pas être détruite par le lanceur du projectile, mais assez fragile pour être réduite comme le reste de l'enveloppe du projectile en morceaux de petite taille au moment de l'explosion de l'engin. Le corps 1 et la jupe 3 présentent des lignes axiales de rupture 13,14. The skirt 3 is made so as to have sufficient strength not to be destroyed by the projectile launcher, but fragile enough to be reduced like the rest of the projectile envelope into small pieces at the time of the explosion of the craft. The body 1 and the skirt 3 have axial breaking lines 13,14.

Selon une variante, le nez 2 et la jupe 3 peuvent faire partie intégrante du corps 1 et la masse de poudre de fer 8 ainsi que les charges d'éclatement et combustible peuvent être placées successivement dans le corps avec interposition d'une cloison de séparation et d'un fond muni d'un manchon axial pour le retard pyrotechnique. According to a variant, the nose 2 and the skirt 3 can be an integral part of the body 1 and the mass of iron powder 8 as well as the bursting and combustible charges can be placed successively in the body with the interposition of a partition wall and a bottom provided with an axial sleeve for the pyrotechnic delay.

La charge d'éclatement 4 a trois fonctions. Elle provoque l'explosion de l'engin et elle allume et disperse les particules de titane de la charge combustible 5. The bursting charge 4 has three functions. It causes the explosion of the machine and it ignites and disperses the titanium particles of the fuel charge 5.

En outre, elle assure le maintien du motif représenté par la charge éclairante, en position dans le corps 1. In addition, it maintains the pattern represented by the lighting charge, in position in the body 1.

Le retard pyrotechnique est un retard de l'ordre de 2 secondes, qui est allumé au départ du projectile et qui transmet le feu à l'intérieur du corps 1 de celui-ci lorsqu'il a atteint le point de sa trajectoire auquel son éclatement doit avoir lieu. The pyrotechnic delay is a delay of the order of 2 seconds, which is ignited at the start of the projectile and which transmits fire inside its body 1 when it reaches the point of its trajectory at which its burst must take place.

L'action combinée du lest constitué par la masse de poudre de fer 8 disposée dans le nez du projectile et des ouvertures allongées 12 ménagées dans sa jupe 3 assure le maintien de l'axe du projectile sur la trajectoire qu'il est destiné à suivre.  The combined action of the ballast constituted by the mass of iron powder 8 disposed in the nose of the projectile and elongated openings 12 formed in its skirt 3 ensures the maintenance of the axis of the projectile on the trajectory which it is intended to follow .

Lors de l'explosion de la charge d'éclatement 4 allumée par le retard pyrotechnique 11, il y a destruction du corps 1, du nez 2 et de la jupe 3 en matière plastique, allumage et dispersion des particules agglomérées de la charge combustible 5 et dispersion de la masse de poudre de fer 8 qui retombe sans provoquer le moindre risque de détérioration d'objets ou de blessure de personnes.  During the explosion of the bursting charge 4 ignited by the pyrotechnic delay 11, there is destruction of the body 1, of the nose 2 and of the plastic skirt 3, ignition and dispersion of the agglomerated particles of the combustible charge 5 and dispersion of the mass of iron powder 8 which falls without causing the slightest risk of deterioration of objects or injury to persons.

Claims (6)

REVENDICATIONS 1. Projectile pyrotechnique comprenant un corps (1) contenant une charge d'éclatement (4) et une charge combustible (5) destinée à la création d'un effet d'artifice, caractérisé en ce que le nez (2) du corps de l'engin contient une masse (8) de matière en poudre de forte densité pour déplacer le centre de gravité du projectile vers l'avant de celui-ci, la rupture du corps (1) et du nez (2) provoquée par l'explosion de la charge d'éclatement assurent la dispersion de la poudre dans l'atmosphère. 1. Pyrotechnic projectile comprising a body (1) containing a bursting charge (4) and a combustible charge (5) intended for the creation of an artifice effect, characterized in that the nose (2) of the body the device contains a mass (8) of powder material of high density to move the center of gravity of the projectile towards the front of it, the rupture of the body (1) and of the nose (2) caused by the explosion of the bursting charge ensure the dispersion of the powder in the atmosphere. 2. Projectile suivant la revendication 1, caractérisé en ce que la masse de poudre (8) de forte densité est disposée dans un conteneur (7) formant le nez (2) du corps. 2. Projectile according to claim 1, characterized in that the mass of powder (8) of high density is placed in a container (7) forming the nose (2) of the body. 3. Projectile suivant la revendication 2, caractérisé en ce que le corps (1) du projectile est fermé par un couvercle (6) qui forme la base du conteneur (7). 3. Projectile according to claim 2, characterized in that the body (1) of the projectile is closed by a cover (6) which forms the base of the container (7). 4. Projectile suivant l'une des revendications 1 à 3, caractérisé en ce que le corps (1) est prolongé par une jupe (3) munie d'ouvertures allongées (12) de maintien de la trajectoire du projectile après son lancement, et en ce que la jupe est réalisée de façon à présenter une résistance suffisante pour ne pas être détruite par le lanceur du projectile, mais assez fragile pour être réduite en morceaux de petite taille au moment de l'explosion du projectile. 4. Projectile according to one of claims 1 to 3, characterized in that the body (1) is extended by a skirt (3) provided with elongated openings (12) for maintaining the trajectory of the projectile after its launch, and in that the skirt is made so as to have sufficient strength not to be destroyed by the launcher of the projectile, but fragile enough to be reduced into small pieces when the projectile explodes. 5. Projectile suivant l'une des revendications 1 à 4, caractérisé en ce que le corps (1), le nez (2) et la jupe (3) sont réalisés en matière plastique. 5. Projectile according to one of claims 1 to 4, characterized in that the body (1), the nose (2) and the skirt (3) are made of plastic. 6. Projectile suivant la revendication 5, caractérisé en ce que la matière plastique est le polystyrène.  6. Projectile according to claim 5, characterized in that the plastic material is polystyrene.
FR9707443A 1997-06-16 1997-06-16 ORIENTATED PYROTECHNIC PROJECTILE WITHOUT BLINDING IMPACTS Expired - Fee Related FR2764688B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9707443A FR2764688B1 (en) 1997-06-16 1997-06-16 ORIENTATED PYROTECHNIC PROJECTILE WITHOUT BLINDING IMPACTS
PCT/FR1998/001262 WO1998058226A1 (en) 1997-06-16 1998-06-16 Oriented pyrotechnic projectile without harmful fall out
AU82194/98A AU8219498A (en) 1997-06-16 1998-06-16 Oriented pyrotechnic projectile without harmful fall out

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9707443A FR2764688B1 (en) 1997-06-16 1997-06-16 ORIENTATED PYROTECHNIC PROJECTILE WITHOUT BLINDING IMPACTS

Publications (2)

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FR2764688A1 true FR2764688A1 (en) 1998-12-18
FR2764688B1 FR2764688B1 (en) 1999-08-27

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FR (1) FR2764688B1 (en)
WO (1) WO1998058226A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793017A1 (en) 1999-04-30 2000-11-03 Lacroix Soc E PROJECTILE WITH BALISTICALLY CONTROLLED

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU41347A1 (en) * 1962-03-08 1963-09-08
GB1016584A (en) * 1962-06-07 1966-01-12 Dynamit Nobel Ag Improvements in projectiles for practice ammunition
GB1016585A (en) * 1962-06-07 1966-01-12 Dynamit Nobel Ag Improvements in projectiles for practice ammunition
FR1546763A (en) * 1967-10-12 1968-11-22 Ruggieri Ets Self-propelled pyrotechnic device and composition for its propulsion
DE3902381A1 (en) * 1988-01-28 1989-08-10 Comet Pyrotech Firework rocket
EP0407288A1 (en) * 1989-07-03 1991-01-09 Manurhin Defense Training projectile for an automatically or hand-operated firearm

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU41347A1 (en) * 1962-03-08 1963-09-08
GB1016584A (en) * 1962-06-07 1966-01-12 Dynamit Nobel Ag Improvements in projectiles for practice ammunition
GB1016585A (en) * 1962-06-07 1966-01-12 Dynamit Nobel Ag Improvements in projectiles for practice ammunition
FR1546763A (en) * 1967-10-12 1968-11-22 Ruggieri Ets Self-propelled pyrotechnic device and composition for its propulsion
DE3902381A1 (en) * 1988-01-28 1989-08-10 Comet Pyrotech Firework rocket
EP0407288A1 (en) * 1989-07-03 1991-01-09 Manurhin Defense Training projectile for an automatically or hand-operated firearm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793017A1 (en) 1999-04-30 2000-11-03 Lacroix Soc E PROJECTILE WITH BALISTICALLY CONTROLLED
WO2000066968A1 (en) 1999-04-30 2000-11-09 Etienne Lacroix Tous Artifices S.A. Projectile with controlled ballistics

Also Published As

Publication number Publication date
WO1998058226A1 (en) 1998-12-23
AU8219498A (en) 1999-01-04
FR2764688B1 (en) 1999-08-27

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