DE102006047549A1 - Igniter for a projectile - Google Patents

Abstract

An igniter (10) for a projectile, in particular for a swirl-free projectile, with a first and a second arming criterion for the securing device (14) of the igniter (10) is described, wherein the first arming criterion the launch acceleration of the projectile (12) or his detonator (10) used. The detonator (10) has spaced pressure and / or temperature sensors (20) for measuring the difference of the pressure and / or the temperature during the flight phase of the projectile (12), wherein the respective difference measured value by means of a comparator (24) with a predetermined threshold value (26) is compared and a corresponding comparison signal (28) forms the second Entsicherungskriterium for the safety device (14) of the igniter.

Description

The The invention relates to an igniter for a projectile, especially for a spin-free bullet, according to the preamble of claim 1.

at twist-free bullets like mortars o. The like. As the first arming criterion, the launch acceleration used. As a second arming criterion comes, for example, a Vorstecker for use, which are drawn before the launch of the projectile got to. A major shortcoming of such a Vorsteckers exists in that the detonator of the bullet after pulling the plug only easier is secured and still needs to be handled. That means for the Operating personnel an increased Risk. Besides, they are such pins for automatic weapons or firing systems not suitable.

A different possibility exists so far, as a second arming criterion, for example. to provide a wind turbine or a turbine wheel which is mounted in the igniter is and the air flow sensed after the shooting. For this purpose, the wind turbine or turbine over a Channel are flown, which has an inlet and an outlet. This channel as well The storage of the wind or turbine wheel are against contamination and sensitive to icing and therefore e.g. under sandy or dusty operating conditions and environments.

In Knowledge of these circumstances, the invention is based on the object a detonator for a Projectile, in particular for a spin-free projectile, with a second arming criterion to provide, with no continuous channel to the security device is present, and with simple means an automatic release possible is.

These The object is achieved by the Characteristics of claim 1 solved. Preferred embodiments or further developments of the invention are characterized in the subclaims.

According to the invention are preferably at the igniter tip and at the detonator circumference Pressure sensors and / or temperature sensors attached, which are suitable are, at an airflow while the flight phase of the projectile a pressure difference measurement and / or to make a temperature difference measurement, and depending from a given threshold clearly the respective flight phase of the projectile. A corresponding comparison signal between the predetermined threshold value and the pressure and / or temperature difference measurement signal forms for the igniter invention second arming criterion. This signal will be the second Arming criterion used, and leads to the automatic focus the igniter according to the invention.

The achieved with the invention advantages are that security at the user and the reliability are significantly improved, because the fuse of the igniter automatically done, and because openings into the interior of the detonator be avoided.

Further Details, features and advantages will be apparent from the following Description of an embodiment schematically illustrated in the drawing a partially drawn detonator of a projectile, in particular a twist-free projectile.

The figure illustrates a detonator 10 of a projectile 12 , The detonator 10 has a safety device 14 with a first and a second arming criterion. The first safety criterion uses the launching acceleration of the projectile 12 , An acceleration sensor is used to record the launch acceleration 16 that with the safety device 14 is actively connected. This operative connection is through the angled arrow 18 indicated.

The detonator 10 has spaced apart sensors 20 on. A sensor 20 is at the fuze tip 22 provided and more sensors 20 are spaced therefrom along the circumference of the igniter 10 arranged equally spaced from each other. With the sensors 20 These are pressure sensors and / or temperature sensors. The pressure sensors 20 are suitable, according to the Bernoulli law, the pressure difference and / or the temperature sensors are suitable, the temperature difference in an air flow of the igniter 10 During the flight phase of the projectile to measure and depending on a predetermined threshold clearly the flight phase of the projectile 12 to detect. For this purpose, those of the sensors 20 generated measuring signals in a comparator 24 compared with said threshold. The threshold is indicated by the arrow 26 indicated. The active connection between the sensors 20 and the comparator 24 is through the angled arrow lines 28 clarified.

Is the flight phase of the projectile 12 with the help of the sensors 20 clearly detected, the corresponding comparison signal forms the second arming criterion of the safety device 14 the detonator 10 , This comparison signal is indicated by the arrow 30 indicated.

10

Igniter (for 12 )

12

bullet

14

Safety device (from 10 )

16

Acceleration sensor (from 10 For 14 )

18

Arrow / working connection / first arming criterion (for 14 )

20

Sensors (from 10 )

22

Igniter tip (from 10 )

24

Comparator (from 10 For 20 )

26

Threshold (for 24 )

28

Arrow / active connection (between 20 and 24 )

30

Arrow / comparison signal / second arming criterion (for 14 )

Claims (3)

An igniter for a projectile, in particular for a swirl-free projectile, with a first and a second arming criterion of its security device ( 14 ), wherein the first arming criterion the firing acceleration of the fuze ( 10 ), characterized in that the fuze ( 10 ) spaced from each other pressure and / or temperature sensors ( 20 ) for measuring the difference of the pressure and / or the temperature, wherein the respective difference measured value by means of a comparator ( 24 ) with a predetermined threshold ( 26 ) and the corresponding comparison signal ( 28 ) the second arming criterion for the safety device ( 14 ) of the detonator ( 10 ) of the projectile ( 12 ). Igniter according to claim 1, characterized in that at least one sensor ( 20 ) at the ignition tip ( 22 ) and a number of sensors ( 20 ) from the igniter tip ( 22 ) axially spaced along the circumference of the igniter ( 10 ) are provided. An igniter according to claim 2, characterized in that the sensors ( 20 ) along the circumference of the igniter ( 10 ) are provided evenly spaced.