RU2479825C1 - Precision shell fuse with side function - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: fuse comprises a body, where a target sensor is installed in the form of an electric contact group isolated from the body, connected with a control scheme of an actuating device and comprising current-conducting elements. Some current-conducting elements are installed as capable of displacement under action of inertial forces until contact with a response contact. Current-conducting elements moved under action of inertial forces, in the amount of at least three, are arranged at the angle to each other and to the fuse axis, and to each one its own response contact corresponds, which is connected in parallel with response contacts of other current-conducting elements. When placing current-conducting elements at the angle to the fuse axis in the range of above 45° to 90°, an additional current-conducting element is installed as moved under action of inertia forces with a response contact at the angle to the fuse axis that is below 45°.

EFFECT: invention makes it possible to increase reliability of actuation whenever a shell meets a target at any angles.

3 cl, 2 dwg

Description

The invention relates to ammunition, and in particular to shots with high-explosive shells, the design of which includes an electronic contact fuse with a side-by-side function, which should provide detonation of the explosive charge in close proximity to the underlying surface at any angles of approach of the shell to it, without penetrating, and in case of failure, it must provide contact blasting in a duplicate manner, in which penetration into the underlying surface is allowed, also at any angles of approach, including under the ricoche GOVERNMENTAL (less than 15 °) and Padania shell side portion.

Known shock fuse according to patent RU 2288443 (publ. 01/27/10), one of the elements of the contact group of which is made in the form of a spring-loaded retractable contact abutting against a membrane fixed at the top of the tip, and the second element of the contact group is made in the form of a central conductive bushings with a drummer located in it, an expelling charge and an electric igniter.

The disadvantage of this fuse is the high probability of failure at the corners of the approach of the projectile to the target, less than 15 °, because however, there are no reaction forces leading to the closure of the elements of the contact group.

Known artillery fuse according to patent RU 2399019 (publ. 10.09.10), equipped with a side-by-side function and comprising a housing, a reaction target sensor and an actuator, the target sensor is made in the form of two, four or six conductive pins uniformly located at the end of the housing on a circle of diameter D, and a cap with a conductive inner surface of diameter D1. The pins are isolated from the housing. The even pins are connected to the control circuit of the actuator, the odd pins are connected to the power circuit. The cap is galvanically isolated from the actuator circuit. The diameters D and D1 are related by the relation D = (0.3 ... 0.8) D1. The noise immunity and reliability of the fuse increases when the projectile is electrified on the trajectory and when the projectile encounters an obstacle at rebound angles, but not less than 10 °. This fuse is selected as a prototype.

The disadvantage of the prototype is that the design of the fuse includes a very sensitive reaction target sensor. It should also be noted that although the fuse provides detonation of the projectile on the approach to the underlying surface at ricocheting angles, within 15-10 °, the fuse does not fire at any angle of approach to the underlying surface, failure occurs when the projectile falls sideways, at angles from 10 to 0 °.

The technical result that can be obtained from the implementation of the new solution is to increase the reliability of operation when a projectile meets a target at any angle.

The specified technical result is achieved due to the fact that in the fuse of a percussion projectile with a side-by-side function, including features common with the prototype, namely: a housing in which a target sensor is placed in the form of an electrical contact group isolated from the housing associated with the control circuit of the actuator and containing conductive elements, some of which are installed with the ability to move under the action of inertial forces until they come into contact with the reciprocal contact, there are distinctive signs, and o: conductive elements moved under the action of inertial forces, in an amount of at least three, are placed at an angle to each other and the axis of the fuse, and each corresponds to its response contact, which is connected in parallel with the response contacts of other conductive elements.

The location of the conductive elements moved under the action of inertial forces, in an amount of at least three, at an angle to each other and the axis of the fuse, allows you to cover the entire range of firing angles by obtaining an inertial component for triggering a contact group at any angles of approach to the underlying surface.

Fulfillment of each reciprocal element of its response contact allows the response contacts of all conductive elements of the electrical contact groups to be connected in parallel and the fuse to operate when at least one electrical contact group is closed.

The connection of the reciprocal contacts of all conductive elements in parallel allows us to ensure operability at any angles of approach and to increase the reliability of the fuse.

The installation of an additional conductive element, moved under the action of inertial forces, and its reciprocal contact at an angle to the axis of the fuse less than 45 °, is necessary to obtain the inertial action required to close the contact group when placing other conductive elements moved under the influence of inertial forces at an angle to the axis fuse in the range from 45 ° to 90 °.

Separation from each other in different parts of the fuse, depending on the presence of free volume, moved under the action of inertial forces of the conductive elements with their corresponding response contacts, makes it possible to optimally arrange the fuse.

Figure 1 schematically shows the inventive device;

figure 2 is an axonometric image of an electrical contact group;

where 1 is the fuse case, 2 target sensor, 3 is a conductive element moved by inertial forces, 4 is a safety spring, 5 is a reciprocal contact, 6 is an additional conductive element with a corresponding response contact.

An example of a specific implementation of the claimed device can be a contact fuse with a side-by-side function, in the case of which a safety cocking mechanism (FDA) is installed. A target sensor in the form of an electrical contact group isolated from the housing is built into the free volume of this mechanism. The electrical contact group consists of four conductive elements that are moved under the action of inertial forces and are located around a circle at an angle of 45 ° to the longitudinal axis of the fuse, and the corresponding non-movable conductive elements - response contacts. This layout scheme allows you to do without the use of an additional conductive element with a corresponding response contact located along the axis of the fuse (Fig. 1 - item 6), since at any angle of approach of the projectile to the underlying surface there will be an inertial component directed along the axis of at least one conductive element moved under its action. Response contacts are connected in parallel and connected to the command circuit for controlling the detonation. Movable conductive elements are spring loaded.

The fuse works as follows. Under the influence of starting overloads, when certain conditions are reached, the FDA is triggered, which makes it possible for the ammunition to move away from the edge of the barrel at the required distance. After the operation of the FDA, the electric circuit of the fuse is activated. On the flight, the movable conductive elements 3 of the target 2 sensor are kept from the action of inertial forces by the safety spring 4 and until the meeting with the target, the initial state of the sensor nodes is maintained. Upon contact with the target at any angle of approach to it, at least one movable conductive element 3 experiences an inertial load, overcomes the action of the safety spring 4 and closes the return contact 5, thereby undermining the projectile.

Claims (3)

1. The fuse of an impact projectile with a side-by-side function, comprising a housing in which the target sensor is located in the form of an electrical contact group isolated from the housing associated with the control circuit of the actuator and containing conductive elements, some of which are installed with the possibility of movement under the action of inertial forces up to contact with the reciprocal contact, characterized in that the conductive elements moved under the action of inertial forces, in an amount of at least three, are placed at an angle to each other the friend and the axis of the fuse, and each corresponds to its response contact, which is connected in parallel with the response contacts of other conductive elements. 2. The fuse according to claim 1, characterized in that when placing conductive elements moved under the influence of inertial forces at an angle to the axis of the fuse in the range of more than 45 ° to 90 °, an additional conductive element moved under the influence of inertial forces is installed with a contact with the contact at an angle to fuse axis less than 45 °. 3. The fuse according to claim 1, characterized in that the conductive elements with response contacts moved by inertial forces are placed separately from each other in different parts of the fuse, depending on the presence of free volume.

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