BE546524A

BE546524A -

Info

Publication number: BE546524A
Authority: BE
Priority date: 1955-09-21
Also published as: FR1150765A; CH348083A

Description

       

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utilisée dans des projectiles de mortiers.

  
On connaît différents types de fusées à percussion et de

  
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avant que l'explosion ne se produise, le projectile peut pénétrer  dans le sol sur une courte distance, notamment quand le sol est

  
mou et, de ce fait, les éclats sont dirigés en oblique vers le haut. L'allure de la surface du sol peut aussi empêcher les éclats  de voler. Ce type de projectile a surtout un effet moral quand on tire sur,un ennemi abrité.

  
Quand on emploie la fusée à temps, on éprouve des difficultés à régler la fusée, de façon qu'elle explose à une hauteur con-venable au-dessus du sol et que l'effet de l'éclatement soit destractif.

  
On connaît aussi les fusses contenant une faible charge explosive, qui fait rebondir le projectile dans l'air après qu'il

  
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ne périodicité. La lanière de cette source se réfléchit sur la cellule sensible à la lumière se trouvant dans la. fusée et provoque une impulsion de courant dans le circuit d'oscillation de la

  
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L'impulsion de courant fait s'allumer l'amorce électrique reliée au circuit.

  
L'invention est expliquée de façon plus précise dans la.

  
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Aux dessins, la figure 1 représente un projectile de mortier pourvu.

  
 <EMI ID=8.1>  la figure 2 représente la fusée elle-même et le schéma des connexions qui s'y trouvent.

  
A la figure 1, on peut voir que dans la pointe du projeotile 1 se trouve une fusée 2, la partie médiane de la pointe de celle-ci contenant un tube à gaz 3 rempli d'un gaz convenable,

  
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des oscillations de la lumière peut être par exemple de 500 - 800 oscillations par seconde. Le courant nécessaire pour le tube à gaz 3 est obtenu d'une petite batterie, qui est agencée dans lé corps du projectile. L'oscillation nécessaire du courant est obtenue de l'oscillateur connecté au circuit. La batterie et l'oscil-'  lateur n'ont pas été représentés à la figure 1. En face du tube 3,  il y a une lentille 4 destinée à focaliser les rayons lumineux venant du tube 3 à la distance d'environ 2 à 8 mètres. Quand le projectile est arrivé à proximité du but, les rayons lumineux se réfléchissent, une partie de ceux-ci rencontrant une cellule 5, très sensible à la lumière, montée dans la pointe de la fusée. Le tube

  
3 est entouré de la cellule photo-électrique 5 mais est cependant protégé de façon que les rayons lumineux venant du tube ne puissent atteindre directement cette cellule. Celle-ci est reliée au circuit d'oscillation établi au corps de'la fusée. La vitesse d'oscillation du circuit d'oscillation et du tube 3 est sensiblement la même. Or quand les rayons réfléchis rencontrent la cellule photo-électri-  que, un faible courant apparaît dans la cellule et rend le courant du circuit d'oscillation plus fort, et l'impulsion de courant ainsi obtenue est amenée à l'amorce électrique 6 de la fusée, amorce qui s'allume et fait exploser le projectile. La pointe de la fusée est couverte par une douille en matière plastique transparente 7, par exemple, qui laisse passer les rayons réfléchis vers la cellule photo-électrique.

  
La fusée conforme à la description qui précède fait expio-se! le projectile à hauteur convenable au-dessus du sol (objectif)

  
et l'effet d'éclatement obtenu est très efficace. Comme le circuit

  
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à la périodicité correspondant à celle du tube, aucune autre sorte de lumière, par exemple une lumière ayant une périodicité égale ou différente, n'affectera le fonctionnement du tube. De cette

  
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du fonctionnement de la fusée, à moins qu'exactement le même période d'oscillation .. soit par hasard utilisé Cette possibilité peut être évitée si la période d'oscillation eot prévue variable et peut donc être choisie immédiatement avant le commencement du tir.-

  
La fusée comprend une sorte de système de lentilles, dans

  
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terne 10 présentant également un filet à sa surface externe.pour sa mise en placé dans la pointe de tête du projectile. Dans la

  
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le tube 3, vers le foyer se trouvant à 2 - 8 mètres. Les rayons lumineux réfléchis arrivent à une lentille annulaire 8, placée

  
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used in mortar projectiles.

  
We know different types of percussion rockets and

  
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before the explosion occurs, the projectile may penetrate the ground a short distance, especially when the ground is

  
soft and, therefore, the shards are directed obliquely upward. The appearance of the ground surface can also prevent shards from flying. This type of projectile especially has a moral effect when firing on a sheltered enemy.

  
When using the rocket in time, it is difficult to adjust the rocket so that it explodes at a suitable height above the ground and the effect of the burst is destructive.

  
We also know of the drums containing a weak explosive charge, which bounces the projectile in the air after it

  
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do periodicity. The thong of this source reflects off the light-sensitive cell in the. rocket and causes a current pulse in the oscillation circuit of the

  
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The current pulse ignites the electrical primer connected to the circuit.

  
The invention is explained more precisely in the.

  
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In the drawings, Figure 1 shows a mortar projectile provided.

  
 <EMI ID = 8.1> Figure 2 shows the rocket itself and the connection diagram on it.

  
In Figure 1, it can be seen that in the tip of the projeotile 1 there is a rocket 2, the middle part of the tip thereof containing a gas tube 3 filled with a suitable gas,

  
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oscillations of light can be for example 500 - 800 oscillations per second. The current required for the gas tube 3 is obtained from a small battery, which is arranged in the body of the projectile. The necessary oscillation of the current is obtained from the oscillator connected to the circuit. The battery and the oscillator have not been shown in figure 1. In front of the tube 3, there is a lens 4 intended to focus the light rays coming from the tube 3 at the distance of about 2 to 8 meters. When the projectile has arrived near the goal, the light rays are reflected, part of them encountering a cell 5, very sensitive to light, mounted in the tip of the rocket. The tube

  
3 is surrounded by the photoelectric cell 5 but is however protected so that the light rays coming from the tube cannot directly reach this cell. This is connected to the oscillation circuit established in the body of the rocket. The oscillation speed of the oscillation circuit and of the tube 3 is substantially the same. Now when the reflected rays meet the photoelectric cell, a weak current appears in the cell and makes the current of the oscillation circuit stronger, and the current pulse thus obtained is brought to the electric starter 6 of the rocket, a primer that ignites and detonates the projectile. The tip of the rocket is covered by a transparent plastic sleeve 7, for example, which allows the reflected rays to pass towards the photocell.

  
The rocket conforming to the above description is expio-se! the projectile at a suitable height above the ground (objective)

  
and the bursting effect obtained is very effective. Like the circuit

  
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at the periodicity corresponding to that of the tube, no other kind of light, for example light having the same or different periodicity, will affect the operation of the tube. Of this

  
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operation of the rocket, unless exactly the same period of oscillation .. is accidentally used This possibility can be avoided if the period of oscillation is expected to be variable and can therefore be chosen immediately before the start of firing.

  
The rocket includes a kind of lens system, in

  
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dull 10 also having a thread on its external surface for its placement in the head tip of the projectile. In the

  
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the tube 3, towards the hearth located at 2 - 8 meters. The reflected light rays arrive at a ring lens 8, placed

  
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Claims

light.

The tube 3 emits an oscillating light, the periodicity of which may for example be from 500 to 1000 periods per second. Besides tube 3, the circuit includes, as can be seen in the drawing, a battery 13, an oscillator 14, capacitors 15 and 18, a mercury switch 16 and a transformer 17. The switch <EMI ID = 16.1>

through a thin tube. When the projectile leaves, the power of the mass caused by the acceleration exerts pressure against the. lower part of mercury allowing current to pass between the electrodes. So. premature operation of the rocket can be prevented. '.

When the rays emitted by the tube 3 encounter an obstacle, an objective in front of the projectile, they are reflected by the lens 8 on the photoelectric cell 5, which causes the other circuit to act. The weak current pulse arriving at the photoelectric cell becomes stronger in this circuit and a current is obtained so powerful that the electric starter 6 lights up,

transformer 24, a filter tube 25 and a mercury switch 26, similar to that of the light source circuit, which

without intermediate solid material. The circuit diagram of the circuits described above may appear otherwise. One can, for example, instead of the three aforementioned batteries, do not provide

1. Electric rocket of explosive projectile, characterized in that the impulse necessary for its operation is obtained from a light source oscillating at a certain periodi-

photoelectric provided in the rocket, thus produce a current pulse in the oscillation circuit, regulated sensi-

at the same periodicity, of the photoelectric cell, and /

the electric primer, or the like, connected to the circuit.

2. Rocket according to claim 1, characterized in that a light tube, for example a tube filled with cryptûn

or natron, is used as a light source.

3. Rocket according to claims 1 and 2, characterized in that the beam of light rays coming from the light tube is directed and concentrated in a lens towards a focal point located 2 - 8 meters in front of the rocket.

4. Rocket according to claims 1 to 3, characterized in that the light tube is placed in the hollow of the middle part of the tip of the point and that the photoelectric cell is placed in a ring around the light tube.

5. Rocket according to claims 1 to 4, characterized in that its tip is covered with a layer of transparent plastic which forms a screen for the directing lens of the light rays, the light tube and the photoelectric cell.

6. Rocket according to claims 1 to 3, characterized in that the light emitting element and the element receiving the reflected light form a lens system or the like, in the middle of which are the light source (3) and the lens

(4) belonging to it, the photoelectric cell being behind the light source, so that the reflected light rays are directed towards the photoelectric cell by means of an annular lens (8) surrounding the aforementioned lens (4) .

7. Rocket according to claim 6, characterized in that the lenses (4 and 8) are isolated from one another by tabular screens (11 and 12).

8. Rocket according to claim 6, characterized in that the elements (9 and 10) belonging to 'its lens system are filled with a solid material allowing light to pass, for example glass, plastic or the like.

9. Rocket according to claim. 6, characterized by the fact that the elements (9 and 10) belonging to its lens system are hollow.

10. Rocket according to claims 1 to 9, characterized in that its circuits are provided with mercury switches operating by the powers of the mass occurring during firing.