EP1909059A1 - Projectile detonator - Google Patents

Abstract

The projectile fuze (12) has a pyrotechnic force element (14) interconnected with fuze electronics and mechanically blocks a safety and arming unit (16) until the elapse of a set time obtained by subtracting predetermined time from the time of flight. An electrical firing circuit is charged and the safety and arming unit is unlocked to the armed position by the initiation of the force element after the elapse of the set time.

Description

The invention relates to a projectile fuze according to the preamble of claim 1.

Such a projectile fuse is used for example as a mortar fuse.

There are known projectiles with a so-called over-flying safety. Such overflight safety was introduced, for example, the detonator type ANNZ DM 74 as an electrical solution. This known Überflugsicherheit serves to make the projectile detonator over a larger portion of the projectile trajectory against interference attempts and / or against deception attempts of an opponent and against less common influences from outside and inside resistant. The so-called Bahnzerlegerrate is at such known projectile igniters at <10 ^-6 . This now allows you to use a projectile equipped with such a projectile launcher also over your own troops. This applies, for example, in exercises with projectiles that are equipped with such projectile lighters.

Realized is such electrical safety overflight in such a way that by means of an external programmer, the time of flight of the projectile is programmed into the detonator electronics ie fed. After the launch of the projectile, a timer / counter is started, which counts up to the programmed flight time minus a fixed time value and then charges an electrical ignition circuit of the ignition electronics. This charging of the ignition circuit is in the msec range, so that the projectile fuze is ready to fire in time in the specified target.

In the known bullet lighters of the type mentioned above, however, the securing device is designed such that after a very short in relation to the total trajectory very short time period, the mechanical interruption of the ignition chain is canceled, i. the so-called pre-pipe safety is comparatively small.

The invention is in the knowledge of these circumstances, the task of creating a projectile fuse of the type mentioned, which has a programmable electrical and mechanical safety overflight and a comparatively large Vorrohrsicherheit.

This object is achieved by the features of claim 1. Preferred embodiments or further developments of the projectile fuze according to the invention are characterized in the subclaims.

In the projectile fuse according to the invention, the safety device is blocked by a pyrotechnic force element as long as possible, i. held in the safe until the programmed or, if necessary, also manually set flight time - minus a fixed time value (speed safety) is reached. If the set flight time minus the set time value is reached, the ignition circuit for the force element is charged and the safety device is unlocked by igniting the force element. The fuse then goes into focus, i. the ignition chain is broken and the ignition chain is then inline. Now, the actual ignition circuit of the projectile fuze according to the invention is charged, so that the detonator in the intended destination is ready in time to fire.

Further details, features and advantages will become apparent from the following description of two illustrated in the drawings embodiments of the projectile fuse according to the invention.

Figur 1

eine schematische Darstellung einer Flugbahn eines Geschosses mit einem bekannten Geschosszünder,

Figur 2

eine der Figur 1 ähnliche Flugbahndarstellung eines Geschosses mit einem erfindungsgemäßen Geschosszünder,

Figur 3

einen Längsschnitt durch eine erste Ausführungsform des erfindungsgemäßen Geschosszünders, und

Figur 4

eine Längsschnittdarstellung einer zweiten Ausbildung des erfindungsgemäßen Geschosszünders.

Show it:

FIG. 1

a schematic representation of a trajectory of a projectile with a known projectile fuse,

FIG. 2

1 is a trajectory view of a projectile with a projectile fuze according to the invention, similar to FIG.

FIG. 3

a longitudinal section through a first embodiment of the projectile fuze according to the invention, and

FIG. 4

a longitudinal sectional view of a second embodiment of the projectile fuze according to the invention.

FIG. 1 illustrates a trajectory 10 of a projectile having a conventional projectile fuse, wherein the arrow V designates the pre-pipe safety, the arrow Ü the overflight safety, and the arrow T the time of flight or target distance. With h the ignition height of the projectile fuze is designated.

FIG. 2 illustrates, in a representation similar to FIG. 1, the trajectory 10 of a projectile having a projectile fuse according to the invention, the arrow V once again designating the mechanical pre-pipe safety and the arrow T designating the time of flight or target distance. H in Figure 2 denotes the ignition height of the projectile fuze. The arrow Ü also indicates the safety against overflight in FIG. 2, which, however, is an electrical / mechanical overflight safety, the point S designating the point of focus of the safety device of the projectile fuze.

3 shows a longitudinal section of an embodiment of the projectile fuze 12 according to the invention, which has a pyrotechnic force element 14 which is interconnected with ignition electronics and blocks a safety device 16 until the time of flight T minus a predetermined time value Δt (see FIG. 2). is reached. Once that is the case, an ignition circuit of the projectile fuze 12 is electrically charged and the safety device 16 is unlocked by igniting the pyrotechnic force element 14 in the armed position. FIG. 3 shows the securing of the securing device.

The securing device 16 has a rotor 18 with a firing pin 20 and with a puncture detonator 22. The firing pin 20 and the piercing detonator 22 are aligned with each other axially and are spaced from each other.

The projectile fuze 12 has an electric detonator 24, which is interconnected with the ignition electronics.

The projectile fuze 12 also has an booster charge 26 associated with the electric detonator 24. The rotor 18 is provided between the electric detonator 24 and the booster charge 26.

While in the drawn in Figure 3 assurance the firing pin 20 and the tapping detonator 22 with the electric detonator 24 and the booster charge 26 are not inline, are the electric detonator 24, the firing pin 20, the tapping detonator 22 and the booster charge 26 in the focus of the Projectile fuze 12 by corresponding rotation of the rotor 18 by 180 ° in an axially aligned position, ie inline.

FIG. 4 illustrates, in a longitudinal section similar to FIG. 3, another embodiment of the projectile fuse 12 according to the invention, wherein the same details are denoted by the same reference numerals as in FIG. 3, so that it is not necessary to describe all these details in connection with FIG.

List of reference numerals:

10

trajectory

12

A fuse

14

pyrotechnic force element (from 12)

16

Safety device (of 12)

18

Rotor (from 16)

20

Firing pin (to 18)

22

Puncture detonator (at 18)

24

electric detonator (from 12)

26

Booster charge (out of 12)

Claims (3)

Projectile fuze with an ignition electronics, in which the time of flight (T) can be programmed, with a timer / counter, which counts up to the programmed flight time (T) - minus a fixed time value (At) - and then charges an electric ignition circuit, and with a mechanical Securing device (16) which places the ignition chain having an electric detonator (24), a firing pin (20), a puncture detonator (22) and an amplifier charge (26) into focus after a certain period of time,
characterized,
is achieved that a pyrotechnic force element (14) is provided which is interconnected with the ignition electronics and the securing device (16) as long as mechanically locks up until the time of flight (T) minus the predetermined time value (At), after which the firing circuit is charged and the securing device ( 16) is unlocked by firing the force element (14) in the focus position. A projectile fuze according to claim 1,
characterized,
in that the securing device (16) has a rotor (18) with the firing pin (20) and the tapping detonator (22), the firing pin (20) and the tapping detonator (22) being axially aligned with one another. A projectile fuze according to claims 1 and 2,
characterized,
in that the ignition electronics are interconnected with the electrical detonator (24) spaced from the booster charge (26), and that the rotor (18) is provided between the electrical detonator (24) and the booster charge (26).

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