DE1578088A1 - Grenade thrown by firing a bullet into a firearm - Google Patents

Description

Dr. Hugo Wilcken

Patent attorney 1 C 7 Q Π Q Q

Lübeck, Breite Str. 52 * 54 I D / ö U ö ö

Telephon: 7 53 SS

3777-67 BREVEOiS AERO-MECA2JIQUES S.A. I.

Using a firearm by shooting a bullet thrown grenade

Priority: Luxembourg, 14 September 1966

and October 13, 1966.

The invention relates to the grenades which

are intended to be thrown by means of a firearm (e.g. by means of an assault rifle or a weapon of higher caliber, although this weapon must be set up for single fire), with the thrown grenade then being placed in the throwing division at the end of the barrel of the weapon and that actual throwing involves the firing of a bullet (hereinafter referred to as "propelling bullet"), which is generally, but not necessarily, a bullet of the type normally used in the weapon for firing bullets, so that the

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same type of ammunition allowed to use the weapon at will Use to shoot bullets or throw grenades.

The invention aims in particular., Such

Train grenades so that they better than before the various Meet practical requirements and, in particular, have an auxiliary power unit that improves their performance, but is contractual with the manner of throwing these grenades by bullets.

For this purpose, with such grenades with

a support sleeve arranged at the rear end of the grenade for attachment to the front end of the barrel of the throwing weapon, this support sleeve being combined with an axial obstacle, which is preferably located in the area of the front end of the sleeve and which is generated by the impact of the bullet on the obstacle Can absorb impulse and transmit it to the grenade, according to the invention the grenade formed in this way on the one hand with an equiaxed outside of the support sleeve and ^; '^; preferably ^ lying at the location of the axial obstacle ^'c auxiliary power unit and on the other hand with igniters which versehenj of this axial obstacle to the auxiliary power unit ^ ■' rich and are formed so that they are triggered by the impingement * '' of the drive ball to the axial obstacle will.

The invention is explained below by way of example with reference to the drawing.

1 is a schematic side view which, with parts broken away and partly in an axial section represents a self-propelled grenade according to the invention.

Pig. 2 and 3 are schematic diagrams

Views of two embodiments of the auxiliary power unit

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BATH ORIGINAL

the grenade

The description below is for a

Grenade, which is fired by means of a light weapon (e.g. an assault rifle) is to be thrown by the shooting of a bullet, as it is used for normal shooting with a weapon.

As shown in the drawing and known per se, the grenade has an intermediate body 1, which to the front by a (preferably by detachable fastening means attached) warhead 2 and is extended to the rear by a support sleeve 3, which is attached to the end of the barrel the throwing weapon can be attached (whereby this end of the target can possibly be provided with an accessory, e.g. a Muzzle brake or a flame protection), whereby the support sleeve 3 a stabilizing tail unit 4 can carry.

This grenade is also provided in a known manner with an axial obstacle 5, which consists, for example, of steel and can absorb the impulse generated by the impact of the propellant ball on the axial obstacle and transfer it to the entire grenade, this obstacle, for example, in the shape of a truncated cone Can have sleeve, which is arranged within ( the sleeve 3 in the front portion thereof,

with and their large base to the rear and their small / one Fastening collar 5a provided base side is directed forward.

According to the invention the thus formed shell by a (sometimes "booster" called) auxiliary power unit 6 will now be completed, which can improve the performance of the shell and outside the support sleeve 3 coaxially zn this, and preferably in the vicinity of its Torderendes or even better "wipe the Torderende the Sleeve and the center of gravity G

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the grenade is arranged.

Ignition devices are also provided,

which works from the axial obstacle 5 to the auxiliary power unit 6 and are designed so that they are triggered by the impact of the sabot on the axial obstacle 5 will.

The auxiliary engine 6 can expediently be designed in this way that it contains a pyrotechnic propellant charge which is axially symmetrical with respect to the axis of the grenade

"and a device provided with at least one nozzle 6a feeds.

The auxiliary power unit 6 can then either be a one-piece contain annular propellant charge, which can either feed a single annular nozzle, or several circular, wreath-like nozzles evenly distributed around the circumference, or a propellant charge that passes through several identical wreath-like elements evenly distributed on the circumference is formed, which either a single

k ring-shaped nozzle or several circular ring-shaped uniformly can feed nozzles distributed around the circumference (each pyrotechnic element in particular. Can feed a nozzle assigned to it).

Furthermore, when the auxiliary power unit 6 of the Grenade has several nozzles 6a arranged in a ring, expediently according to another in Pig. 2 shown Characteristic of the invention, at least certain of these nozzles 6a are designed in this way (in particular by a corresponding inclined position the axis of the nozzle at least in the downstream portion of the same according to an already on the

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Rocket area known technology), such that the exit velocity V of the propellant flows coming from such nozzles has a tangential component Vt, which for all nozzles has the same meaning, so that all of these components Vt of the grenade after ignition of the auxiliary power unit a stabilizing Rotational movement granted around its axis.

Both in the pail in which the auxiliary power unit 6 of the grenade has several circular nozzles arranged in a ring, as well as in the pail in which the auxiliary power unit contains a single annular nozzle, it is according to a further features of the invention expediently, these circular ones To design nozzles or this annular nozzle in such a way that the entire Ireibfluss exiting from the auxiliary power unit Porm has a frustoconical layer which is discontinuous is who in several circlets arranged in a circle Nozzles are provided, or continuous if a single annular nozzle is provided, this being frustoconical Layer converges at least approximately to a point P, which is behind the center of gravity G of the grenade and preferably is at a relatively short distance from this.

This boils down to the nozzle or the

Form nozzles 6a so that at each point of the outlet cross-section of the motive flow in the form of a continuous or discontinuous frustoconical layer, the exit velocity V has a radial component Vr.

In the illustrated preferred embodiment of the invention, in which the auxiliary power unit 6 behind the The focus G of the grenade is, the design of the nozzle or the nozzles 6a is made so that the radial component Vr

~ 1Q9833 / 0290 BADORIGINAt

is directed outwards and has such strength that the Convergence point P actually lies somewhat behind the center of gravity G.

Thanks to this characteristic of the invention, the

Risks of increased dispersion of the firing are considerably reduced when the flow rate of certain nozzles (or certain Sections of an annular nozzle) happens to be larger than the flow rate of the other nozzles.

k has this asymmetry of the flow rates

namely in certain cases a curvature of the trajectory of the Grenade as a result, but since the convergence point P lies behind the center of gravity G, the grenade tilts around the center of gravity opposite to the direction of curvature of the flight path, i.e. in a sense which corresponds to the direction of the shooting axis of its axis approaching. This has the consequence that after the combustion of the auxiliary power unit has ended, a slight tilting movement is sufficient to achieve the Return grenade in the direction of the firing axis, which is quickly achieved by the stabilizing tail unit 4.

"It should be noted that it is possible

simultaneously to obtain the advantages of the first and the second additional on the same auxiliary power unit derive from the feature explained above. This result can be obtained, for example, by using either the nozzles of a nozzle ring be formed alternately according to the first and the second feature, or that two concentric nozzle rings are provided, which are designed according to the first or the second feature, or that all nozzles one and of the same ring are formed in the same way, in such a way that the exit velocities V simultaneously

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have a tangential component Vt and a radial component Vr, which then leads to the point of convergence P being replaced by a circle, the center of which is this point of convergence is, and which lies in a transverse plane, the extensions of the exit velocities V then being represented Support vectors on this circumference.

The ignition devices, which are caused by the

shooting of the sabot should be triggered, can be two-way, if the engine contains a pyrotechnic propellant charge, use an ignition relay between the engine and a primer 7 carried by the axial obstacle 5 and preferably in the vicinity of the front end of the same.

The ignition relay can expediently have a relay charge 8, which by a directly before the Primer 7 arranged incendiary is formed, the relay charge through at least one radial channel 9 and preferably through several such channels with the ignition surface S of the propellant charge of the auxiliary power unit 6 is in connection. (

It should be noted that the engine 6

if necessary, can be provided with at least one safety valve 10.

Finally, according to another

Characteristics of the invention the eyes of protecting against the Plam escaping from the nozzle or nozzles of the auxiliary power unit is protected by the fact that the rear section the same is surrounded by a deflector 11 shown in phantom, which converges towards the rear and the gases of the support sleeve 3 coming from the auxiliary engine

109833/0290

The self-propelled grenade according to the invention, which is intended for throwing through a ball and is provided with an external auxiliary power unit, its presence does not hinder such a throwing type, has, inter alia, the following Advantages:

It is relatively short because of the position of the auxiliary power unit outside the support sleeve does not need to be oversized in the axial direction.

It does not produce a heightened one when fired

ψ Recoil, also due to the external position of the auxiliary power unit.

It has a smaller spread due to the

Localization of the auxiliary power unit close to the center of gravity the grenade.

It does not obstruct the view of the shooter if it is equipped with a gas deflector, which the Beam of the auxiliary power unit in sighting focused on the axis of the grenade.

The invention can of course be modified. In particular, the outer auxiliary power unit of the Grenade and the devices for igniting the same by the impact of the bullet different from the one described be designed particularly expedient embodiment of the invention.

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Claims (10)

August 30, 1967 Applicant t patent claims Brev.ets Aero-Mecaniqu ** « M J) A grenade thrown by locking a bullet with a firearm with a support sleeve arranged at the rear end of the grenade to attach to the front end of the barrel of the ¥ urfwaffe, this support sleeve being combined with an axial obstacle, which is preferably in the saw of the The front end of the sleeve is located and can absorb the impulse generated by the impact of the propellant ball on the obstacle and transmit it to the grenade, characterized by an auxiliary power unit (6) which is coaxial with the support sleeve (3), lies outside the same and preferably at the point of the axial obstacle (5), as well as by ignition devices, which extend from the axial obstacle to the auxiliary power unit (6) and are designed so that they are triggered by the impact of the propellant ball on the axial obstacle. 2.) grenade according to claim 1, characterized in that the axial obstacle (5) consists of steel and i has the shape of a frustoconical sleeve which lies within the support sleeve (3) in the vicinity of the front end thereof, with its large base after rear and its small base side provided with a fastening collar (5a) is directed to the front. 3.) grenade according to claim 1, characterized in that the auxiliary power unit (6) has a pyrotechnic propellant charge has, which has an axial symmetry with respect to the axis of the grenade and one with at least one nozzle (6a) provided device feeds. 109833/0290 -ίο- ΐ578088 4 ·) grenade according to claim 3, characterized in that the auxiliary engine (6) is a one-piece ring-shaped Has propellant charge, which either a single also annular nozzle or several circular ring-shaped feeds nozzles evenly distributed around the circumference. 5.) grenade according to claim 3, characterized in that the auxiliary power unit (6) has a propellant charge, which by several identical and evenly arranged in a wreath circumferentially distributed elements is formed, which either a single annular nozzle, or several circular Nozzles arranged in a ring and evenly distributed around the circumference can feed (each pyrotechnic Element feeds in particular a nozzle assigned to it). 6.) Grenade according to claim 3, in which the Auxiliary power unit has several nozzles arranged in a ring, characterized in that at least certain of these nozzles (6a) are designed so that the exit speed V of the motive flows coming from the nozzles designed in this way have a tangential component Vt which is in the same direction for all nozzles, so that all of these components Vt the grenade is given a stabilizing rotary motion around its axis after the auxiliary power unit is ignited. 7.) grenade according to claim 3, characterized in that the device provided with at least one nozzle its auxiliary power unit (6) is designed so that it emits a total propulsive flow which has the shape of a cone ump-shaped layer, which converges at least approximately to a point (E), which is behind the center of gravity (G) the grenade but preferably in a relatively short distance 109 8 3 3 /0.2 9 0 1 578 OS 8 distance from this is » 8.) grenade according to claim 1, characterized in that that the devices for igniting the auxiliary power unit (6) have an ignition relay which is connected between the power unit and a primer (7) is formed which is carried by the axial obstacle (5) and preferably in the Is located near the front end of the same. 9) grenade according to claim 8, characterized in that the ignition relay contains a relay charge (8), which is formed by an incendiary device and is arranged immediately in front of the primer (7), the relay charge through at least one radial channel (9) and preferably through several such channels with the ignition surface (S) of the propellant charge of the auxiliary power unit (6) is in communication. 10.) Grenade according to claim 1, characterized in that it has a deflector (11) which surrounds the rear section of the engine and converges to the rear to protect the eyes of the shooter against the flames coming from the nozzle or nozzles of the auxiliary power unit. i 109833/0290