DE1126281B - Bullet to attach to a firearm with auxiliary nozzle motor for self-propulsion - Google Patents

Description

The invention relates to a projectile which, when fired, hits the end of the barrel of a firearm is attached and is provided with an auxiliary nozzle motor for self-propulsion, which is of the Propellant charge is ignited.

In known projectiles of the type mentioned above, the propellant charge or the launch charge is ignited the weapon the initial acceleration of the projectile and the rigidly connected to it, self-propelled auxiliary jet engine, this auxiliary jet engine only later for the drive of the projectile comes into action on its path. The recoil of the weapon was thus due to the total mass of the projectile and the auxiliary jet motor and was therefore larger than when the projectile was not provided with an auxiliary jet motor.

The object of the invention is that in the aforementioned known projectile despite Arrangement of the auxiliary jet motor, the recoil when firing the weapon is reduced. This will be after the invention achieved in that the auxiliary jet motor on the projectile between a front and a rear stop is axially displaceable and that the propellant charge initially the Projectile accelerates alone and ignites the auxiliary jet motor, which starts moving before the rear stop of the projectile comes into contact with it.

When the weapon is fired, the recoil is generated only by the mass of the projectile, while the inertia of the auxiliary jet motor initially stops until it reaches the rear stop of the projectile is ignited and thereby moves forward and then against the front The stop of the projectile places and transfers its thrust to this.

The invention is below with reference to the drawing in its application to with a grenades to be fired with simple infantry rifles are explained by way of example.

Fig. 1 is a schematic axial section of an inventive, bullet attached to the end of the barrel of a firing rifle.

FIG. 2 shows the section marked in FIG. 1 with a dash-dotted circle on a larger scale.

The projectile provided with an auxiliary jet motor for attaching to the end of the barrel 1 of a rifle (or the muzzle brake provided at the end of the barrel) has a warhead 2 which is extended to the rear by a connecting part which is attached to a projectile a self-propelled firearm with an auxiliary jet engine

Applicant:

Brevets Aero-Mecaniques SA,
Geneva (Switzerland)

Representative: Dr. H. Wilcken, patent attorney,
Lübeck, Breite Str. 52-54

Claimed priority:
Luxembourg of May 21, 1959 (No. 37 220)

With a sliding fit on the end of the barrel 1 slipped sleeve 3 is formed.

This sleeve 3 carries a tubular as an auxiliary nozzle motor Missile 4, which surrounds the sleeve and in the thickness of its wall an inner cavity 5 with Has ring cross-section, which is closed at the front and at the rear, for. B. via an annular nozzle 6 (or a number of separate nozzles arranged around the pipe 1), the missile is axially slidable relative to the sleeve 3.

The axial sliding movement of the missile 4 with respect to the case 3 is limited on the one hand by a rear stop 7 carried by the case, which can interact with a corresponding stop carried by the missile 4, and on the other hand by a front stop which is e.g. is formed and with a corresponding z. B. formed by the leading edge of the rocket 4 stop 10 can cooperate, the training is such that the largest stroke permitted by these two stop systems between the projectile and the rocket corresponds to the distance indicated by X in FIG.

If the stops 7 and 8 are at a distance from each other at the moment of firing (namely preferably as far as possible), apparently the

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Thrust of the gases in the barrel of the weapon only on the actual projectile (warhead 2 and case 3), while the rocket 4 remains immobile for the time being, and therefore the recoil of the weapon due to its mass unaffected.

Ignition devices triggered by the launch are provided to start the rocket, in such a way that the rocket begins its forward movement before the stops 7 and 8 come into contact with one another Come into contact, the acceleration is preferably so great that the stop 7 does not open the stop 8 hits, but that the stop 10 catches up with the stop 9, so that the thrust of the rocket acts on the projectile from this moment on.

The various factors to be taken into account (firing charge of the weapon, type and weight of the rocket charge, design of the rocket and in particular its nozzle, length of the route X, etc.) can in any case easily be determined by calculation or experiment in such a way as to obtain the above operation will.

The propellant charge of the rocket 4 can be ignited in various ways, e.g. B. electrical.

According to a very simple one shown in FIG Solution is provided in the bottom of the sleeve 3, a channel 11, which after a slight forward movement of the projectile opposite the missile 4 through a channel 12 with the bottom of the inner cavity 5 the missile comes into contact. This will ignite the rocket's propellant charge as soon as the projectile starts moving, whereupon the connection between the channel 11 and the channel 12 is interrupted again by the further forward movement of the projectile.

It should be noted that the mouth of the channel 11 remains open to the outside as long as it passes through the Lagging behind the missile is exposed. Incidentally, during this time the presence provides of the channel 11 have certain technical advantages. In particular, this is how the relatively calm emergence becomes of the sleeve 3 is favored by the barrel 1, furthermore one arises from the one from the channel 11 escaping gases exerted on the grenade driving force, and optionally also the Generation of a rotary movement of the grenade around its axis with a suitable position of the mouth of the channel 11 achieve. Incidentally, for a symmetrical design of the device, a second channel 11 without corresponding counter-channel 12 are provided, as indicated by dash-dotted lines at 11 °. This flows out on the wall of the grenade in a zone that the mouth of the cooperating with the channel 12 Channel 11 is diametrically opposite.

In order to prevent the recoil from being suddenly increased in the event of a misfire of the auxiliary jet motor due to the entire influence of the mass of the motor from the moment the stops 9 and 10 meet, the training is expediently made so that those trapped up to then in the barrel of the weapon Gases find an exit before the projectile has traversed distance X.

For this it is sufficient z. B., when the projectile has traversed a distance Y (which is less than X ), to cancel the seal between the sleeve 3 and the barrel 1, z. B. by a strong inner widening 13 of the bore of the sleeve 3, whereby a free passage to the rear for the gases between the sleeve and the barrel of the weapon is opened.

Furthermore, a safety device is preferably expedient between the stops 9 and 10 provided, which prevents an explosion of the projectile when these attacks after launch of the projectile did not come into contact with each other. This prevents z. B. a plunger 14, as long as it is not pushed in, the ignition current flows through the electrical primer of the Floor.

The arrangement is of course by any known ones independent of the subject matter of the invention Completed devices, e.g. B. by stabilizing wings 15, which at the rear of the auxiliary jet motor can be attached, and a deflection screen 16, which the shooter against from the Nozzle 6 protects emitted burnt gases.

Claims (5)

PATENT CLAIMS: 1. Projectile that is attached to the end of the barrel of a firearm when fired and is provided with an auxiliary nozzle motor for self-propulsion, which is ignited by the propellant charge, characterized in that the auxiliary sdüsenmotor (4) on the projectile (2, 3) between a front and a rear stop (7, 8, 9, 10) is axially displaceable and that the propellant charge initially accelerates the projectile on its own and ignites the auxiliary jet motor, which starts moving before the rear stop (7) of the projectile (2, 3) comes into contact with him. 2. Projectile according to claim 1, characterized in that the projectile (2) is known per se Way is extended at the rear by a push-on sleeve (3), the tubular auxiliary nozzle motor (4) surrounds the sleeve (3). 3. Projectile according to claim 1, characterized in that the ignition channel (11) on the projectile (2, 3) comes into connection with the ignition channel (12) of the same after a slight forward movement of the projectile relative to the auxiliary jet motor (4). 4. Projectile according to claim 1, characterized in that after a sliding stroke (Y) between the auxiliary nozzle motor (4) and the projectile (2, 3) which is smaller than the sliding stroke (Z) between the stops (7, 8, 9 , 10), an exhaust is made by suitable means for the propellant gases trapped in the barrel of the firearm. 5. Projectile according to claim 1, characterized by a safety device which is designed is that the detonator of the explosive charge of the projectile (2) is only activated when the auxiliary jet motor (4) has come to rest with its front stop (10) on the projectile after the launch. Considered publications: Austrian patent specification No. 201476. For this purpose, 1 sheet of drawings © 209 520/57 3.62