JPS63263400A - Fuse - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fuse mounted on a flying object such as a missile.

(Prior Art and its Problems) There are the following types of so-called landing tubes that are detonated when a flying object or the like impacts an object.

(1) A projectile equipped with a firing pin at the tip, which directly pierces explosives and ignites them upon impact. A similar method is to provide a firing pin or the like inside a flying object and use the inertia upon collision to pierce the projectile with explosives.

(2) An electric switch is activated by the shock or inertia of a collision, and ignition is caused by an electrical method.

In general, flying objects that have this device inside them have the disadvantage that the time from collision to detonation is relatively long, so it is sometimes desirable to attach this device to the tip of the flying object.

In addition, detonation using a mechanical method such as a firing pin requires the following explosives to be placed close to the device, and if the firing pin collides with a slope, it may not work properly, so detonation using an electrical method is recommended. tends to be preferred.

As an example, a method called a crash switch is shown in FIG.

In the figure, reference numeral 11 denotes a switch portion consisting of an electrically conductive outer shell 11a and an inner shell 11b, and the outer shell 11a and the inner shell 11b are usually not in contact with each other. Then, after colliding with an object, the outer shell 11
When a deforms and comes into contact with the inner shell 11b, the outer shell 11a - inner shell 11b - electric! 112-The electric circuit of the electric conduit 13 is completed, and the electric detonator 13 is ready to detonate.

However, in this method, the shape of the inner and outer shells can be selected relatively arbitrarily, so it works well even if it collides with a slope.
Since there is a switch on the warhead, the time from collision to detonation is short, and there is also the advantage that gunpowder or explosives such as electric detonators can be placed anywhere within the projectile.

However, on the other hand, (A) it is necessary to use metal or metallized plastic snacks for the inner and outer shells, which is extremely inconvenient when installing a radar antenna or the like on the head.

(B) Even if the electric wires from the inner and outer shells are disconnected, there is virtually no way to detect this.

There was a drawback.

(Means for Solving the Problems) The present invention has been proposed in view of the above points, and its purpose is to provide a warhead with a radar antenna, etc., and to facilitate non-destructive testing. The aim is to provide a fuse that can be used to

That is, in the present invention, the above object is achieved by providing an optical fiber instead of providing an outer shell and an inner shell made of conductors.

(Function) In the present invention, a non-metallic optical fiber is used, and a radar antenna or the like can be installed in the vicinity of the optical fiber, and it is possible to inspect whether the optical fiber is damaged or not due to an abnormality in the light pulse passing through the optical fiber. In other words, it is possible to test whether the electric detonator can reliably operate and detonate in the event of a collision with an object.

(Embodiment) FIG. 1 shows an embodiment of the present invention, in which 1 indicates an oscillator 2.
A light emitting element such as a light emitting diode or a semiconductor laser is driven by an output from a light emitting device, and constitutes a light emitting means.

Reference numeral 3 denotes an optical fiber that is provided around the warhead of the flying object by winding it multiple times, one end of which connects to the light emitting element 1, and the other end of which connects to the light receiving element 4 such as a photodiode.
They are each installed separately and optically coupled. Then, the output of the light receiving element 4 is sent to the bonded detector 5, and the detector 5
The output of is configured to be sent to the firing circuit 6.

Next, the present invention will be explained in detail.

The light emitting element 1 is driven by an oscillator 2 to generate light pulses. The generated light pulse passes through the optical fiber 3, is converted into an electric pulse by the light receiving element 4, and is detected by the detector 5.

Therefore, if the optical fiber 3 is passed through the tip of a flying object or the like, it will be crushed or broken due to a collision, and the detector will detect an abnormality and ignite the detonator via the ignition circuit 6.

Note that checking whether the optical fiber 3 is broken or not can be easily performed by checking the presence or absence of a light pulse transmitted through the optical fiber 3.

(Effects of the Invention 5I) As described above, according to the present invention, a collision is detected by providing an optical fiber in the warhead and detecting an abnormality in the light pulse passing through the warhead. In addition to having all the advantages of a warhead, a) it does not interfere with installing a radar antenna, etc. on the warhead;

b) Non-destructive testing can be easily performed.

There are other effects.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the present invention, and FIG. 2 shows a conventional example. 1... Light emitting element, 2... Oscillator, 3... Optical fiber, 4... Light receiving element, 5... Detector,
6... Firing circuit

Claims (1)

[Claims] A fuze is characterized by having an optical fiber attached to the warhead, and detecting an abnormality in the light pulse passing through the optical fiber to detect a collision with an object and ignite the fuse.