RU2380654C1 - Contact device - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: proposed fuse contact device comprises outer contact representing a projective nose faring and inner contact mating the outer contact shape and arranged concentrically with a clearance with respect to outer contact. Nose fairing is furnished with hollow current conducting aerodynamic needle with rear end face arranged in fairing chamber. Inner contact is fixed on aforesaid end face along aerodynamic needle outer side on dielectric bush. Inertial contact element representing a metal core with its rear end face arranged on the base with clearance with respect to needle wall and connected, via conductor, with inner contact is attached inside needle nose part and on dielectric shaped base with rated break axial and radial forces.

EFFECT: higher reliability and expanded operating performances.

1 dwg

Description

The invention relates to the field of weapons, and in particular to devices for electric fuses of guided missiles and missiles.

Known electric fuse, powered by an onboard battery, with a nose contact device (for example, "Contact device" RF Patent No. 2206061, F42C 19/00 from 06/10/2003), closest to the proposed solution and adopted for the prototype. In this device, the contact pair consists of an external contact, made in the form of a head fairing of the projectile, and an internal contact, made in the shape of the external and installed concentrically with a gap relative to the external contact. In this case, the internal contact is established by means of an insulating sleeve directly on the body of the leading cumulative charge (LKZ) of the tandem warhead (warhead). When hitting a target, the outer fairing closes with the internal contact, creating an electrical circuit to undermine the warhead.

However, this prototype has the following disadvantages. For high-speed projectiles at a high speed of approach to the target during the operation of the contact device and the fuse of the warhead, a noticeable displacement of the projectile and, naturally, LKZ to the target occurs, which leads to a decrease in the focal length of the LKZ and a decrease in its effectiveness. In the prototype, designed for low-speed shells, the compensation of this phenomenon, for example, by increasing the length of the head fairing and internal contact is irrational for several reasons. The design becomes more complicated, the possibility of an unstable electrical circuit when triggered, the so-called bounce, increases, the mass of the structure increases. For high-speed shells, significant strengthening of the head fairing is required in order to prevent premature warhead operation on the possible masking of the target in the form of a steel mesh, twigs, plywood, etc., but this hardening can lead to instability of the time of contacting this contact device on the real target and the possibility of rebound .

The objective of the invention: improving the reliability and operational capabilities of the contact device of an electric fuse for the warhead of a guided projectile.

This is achieved by the fact that in the contact device of the fuse of a guided projectile containing an external contact, made in the form of a head fairing of the projectile, and an internal contact, made in the shape of the outer and installed concentrically with a gap relative to the outer contact, the head fairing is equipped with a hollow conductive aerodynamic needle placed in fairing cavity rear end, the inner contact is fixed on the specified end on the outside of the needle on the dielectric sleeve, and in the bow of the polo whith the needle is fixed to a profiled support with a dielectric normalized efforts disruption in axial and radial directions inertia contact element formed as a metal core mounted on the rear end of the support with a clearance relative to the walls of the needle and associated with the inner conductor contact.

The drawing shows a General view of the proposed device.

The contact device comprises an external head fairing 1, an aerodynamic needle 2 mounted on it, which together carry the function of the external contact. The cup-shaped internal contact 3 is mounted through the dielectric sleeve 4 at the rear end of the needle on the outside in the fairing cavity and with a gap relative to the latter. The contact device is mechanically isolated relative to the housing LKZ 5. In the needle cavity, in the nose electrically isolated from the walls of the needle, an inertial contact element is fixed, for example, in the form of a metal cylindrical core 6, made to provide radial and front end gaps between the walls of the needle and the core and mounted rear end on a profiled dielectric support 7, mounted on the walls of the needle. A special support profile provides normalized, i.e. certain efforts to disrupt the core in axial and radial directions. These efforts and profile are determined from the starting and operational loads of a particular projectile in order to ensure core immobility relative to the walls of the needle when exposed to these loads, but not when the projectile hits the target. The core is electrically connected to the internal contact 3, for example, a wire 8.

The device operates as follows. When a projectile is flying, an aerodynamic needle performs its usual function of reducing the aerodynamic drag of a projectile, and also improves the conditions for the projectile to pass through camouflage barriers, i.e. without significant loss of speed and change in trajectory. When the needle hits the real target and braking sharply, the core 6 breaks off the support 7 and continues to move until it touches the needle body 2 and closes the electric circuit of the fuse of the warhead projectile. Internal contact 3 is a backup and works when the projectile glides against the target or when it self-destructs from the ground. The needle bends at the attachment point in the fairing 1 and the latter closes with the internal contact 3.

Thus, this design of the contact device, in comparison with the prototype, has the following advantages. It is possible to significantly increase the focal length for the LKZ and the tandem warhead as a whole, the reliability of operation at different angles of attack is increased, the reliability of overcoming camouflage obstacles by the projectile is increased. These advantages increase the operational capabilities of the electric contact device, which makes it possible to use it in high-speed shells with a cumulative warhead.

Claims (1)

A contact device for a guided projectile fuse comprising an external contact made in the form of a projectile head fairing and an internal contact made in the shape of the external one and mounted concentrically with a gap relative to the external contact, characterized in that the head fairing is equipped with a hollow conductive aerodynamic needle placed in the fairing cavity the rear end, the inner contact is fixed on the specified end on the outside of the aerodynamic needle on the dielectric sleeve, and in the noses The second part of the needle cavity is mounted on a dielectric shaped support with normalized stall forces in axial and radial directions, an inertial contact element made in the form of a metal core mounted on the support with a rear end face with a gap relative to the needle walls and connected by a conductor with an internal contact.

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