Detonating device for warheads of ammunition

Abstract

FIELD: weapons.SUBSTANCE: detonating devices for warheads of ammunition having an on-board power source, primarily guided missiles, gliding aircraft weapons and unmanned aerial vehicles. The detonating device comprises a power source, a power switch, an additional capacitor, an additional resistor, a contactor, an electric igniter, a pyrotechnic delay device, a damper, a circuit breaker, an electric detonator, a circuit breaker for the initial state, a circuit for the initial state, an additional contactor, a combat capacitor, a current-limiting resistor, a contactor for the target sensor, two high-value resistors connected in a specific manner, an integrating circuit and an electronic key.EFFECT: increasing the protection of the detonating device from pulse interference and interference from sources of high-frequency electromagnetic fields.1 cl, 2 dwg

Description

[0001] The invention relates to detonating devices (DD) and safety-actuating mechanisms (SAM) for warheads of ammunition that have a power source on board, primarily guided missiles, gliding aircraft weapons and unmanned aerial vehicles.

[0002] A safety-actuating mechanism for warheads of missile ammunition is known (RU patent No. 2301960, published 06 / 27 / 2007, IPC F42C 15 / 00), which contains an on-board power source, configured with the possibility of being connected to it after launch, a capacitor, an electric detonator, a target sensor, an inertial trigger mechanism, an electric igniter, a shutter with a pyrotechnic delay of the long-range arming time and a contact associated with it, which bypasses the electric detonator.

[0003] Under the effect of overloads on the missile munition, the contacts of the inertial trigger mechanism close, triggering the electric igniter, which activates the pyrotechnic delay device (PDD). After the delay time has elapsed, the shutter in front of the electric detonator shifts to the combat position, disabling the final safety stage of the PDD. At the same time, the contact bypassing the electric detonator opens. When the target sensor contacts close, voltage from the charged capacitor is applied to the detonator, triggering it and detonating the munition's warhead.

[0004] A characteristic of the known PIM is the need to ensure starting overloads of sufficient magnitude and duration to trigger the inertia trigger mechanism, which disengages the final safety stage and arms the PIM. To ensure arming in the absence of starting overloads, the inertia trigger contacts can be shorted in advance with a jumper and the PIM can be armed by directly applying voltage to the igniter circuit. However, this increases the risk of the igniter being triggered by induced currents when exposed to electromagnetic fields (EMF), leading to unauthorized arming of the PIM.

[0005] This circumstance requires strengthening the protection of PIM from the effects of EMF when using the device as part of free-falling munitions, gliding airborne weapons and unmanned aerial vehicles.

[0006] A known detonating device for warheads of ammunition (RU patent No. 2842067, published 19.06.2025, IPC F42C 15 / 00), comprising a power source, a power switch, an electric igniter, a contactor in the electric igniter circuit, a damper mechanically connected to a pyrotechnic retarder, an electric detonator, a combat capacitor, one pole of which is connected to the power source through a power switch, and the other to a current-limiting resistor, a target sensor contactor connected between the combat capacitor and the electric detonator, a switch mechanically connected to the damper, and a shunt electric detonator, wherein the current-limiting resistor is connected to the common wire of the power source through an additional contactor, and the additional capacitor is connected with one pole to the electric igniter, the power switch and the first high-resistance resistor connected to the common power supply wire,and the other to a contactor in the electric igniter circuit and an additional resistor connected to the common wire of the power source. The second high-resistance resistor is connected between the poles of the combat capacitor through a current-limiting resistor, and the shutter is mechanically linked to the circuit breaker of the initial state. The contactor in the electric igniter circuit, the additional contactor, and the contactor of the target sensor are implemented using MOSFET transistors.

[0007] An additional contactor, connecting a current-limiting resistor to the common wire of the power source, ensures the charging of the combat capacitor and the final arming of the explosive device.

[0008] In the known CU, the possibility of unauthorized arming of the CU cannot be ruled out due to the impact of EMF on the control input of an additional contactor implemented on a MOSFET transistor in the case when the voltage amplitude at its control input (gate) exceeds the turn-on threshold voltage.

[0009] The objective of the invention is to increase the safety and reliability of the detonating device during operation and use for its intended purpose.

[0010] The technical result of the invention consists in increasing the protection of the VU from impulse interference and interference from high-frequency EMF sources.

[0011] The stated problem is solved due to the fact that the detonating device for the warheads of ammunition contains a power source, a power switch, an electric igniter, a contactor in the electric igniter circuit, a damper mechanically connected to a pyrotechnic retarder, an electric detonator, a combat capacitor, one pole of which is connected to the power source through the power switch, and the other to a current-limiting resistor connected to the common wire of the power source through an additional contactor, an additional capacitor, one pole connected to the electric igniter, the power switch and the first high-resistance resistor connected to the common wire of the power source, and the other to a contactor in the electric igniter circuit and an additional resistor connected to the common wire of the power source, a second high-resistance resistor connected between the poles of the combat capacitor through a current-limiting resistor,wherein the shutter is mechanically connected to the circuit breaker of the initial state, the target sensor contactor connected between the combat capacitor and the electric detonator, the contactor mechanically connected to the shutter, and the shunt electric detonator, wherein the output of the integrating circuit is connected to the control input of the additional contactor, and the control input of the electronic key connected between the power source and the input of the integrating circuit is connected to the output of the additional contactor.

[0012] The introduction of an integrating circuit into the device allows for an additional delay in the arming of the explosive device, ensuring that the ammunition is removed from the launch point to a safe distance, and also increases the noise immunity of the arming circuit of the explosive device due to the ability of the integrating circuit (IC) to suppress both impulse interference and interference from high-frequency electromagnetic fields sources.

[0013] Using an electronic switch ensures that the power supply voltage is supplied to the control input of the additional contactor when the voltage at the IC output reaches the electronic switch activation threshold. This ensures that the electronic switch and the additional contactor are in an open state, ensuring stable charging of the combat capacitor from the power source and increasing the operational reliability of the electronic switch.

[0014] Fig. 1 shows the electrical circuit of the VU using MOSFET transistors, and Fig. 2 shows the cyclogram of the VU operation.

[0015] In Fig. 1 the following are indicated:

[0016] 1 - power switch;

[0017] 2 - power supply;

[0018] 3 - additional capacitor;

[0019] 4 - additional resistor;

[0020] 5 - contactor;

[0021] 6 - electric igniter;

[0022] 7 - pyrotechnic retarder;

[0023] 8 - damper;

[0024] 9 - circuit breaker;

[0025] 10 - electric detonator;

[0026] 11 - initial state circuit breaker;

[0027] 12 - initial state chain;

[0028] 13 - additional contactor;

[0029] 14 - combat capacitor;

[0030] 15 - current limiting resistor;

[0031] 16 - target sensor contactor;

[0032] 17 - the first high-resistance resistor;

[0033] 18 - the second high-resistance resistor;

[0034] 19 - integrating circuit;

[0035] 20 - electronic key.

[0036] When command “K1” is issued, the circuit of power switch 1 is closed and the voltage of power source 2 is supplied to additional capacitor 3, which begins to charge with the current flowing through additional resistor 4, connected to the common wire of power source 2. The first stage of protection is removed.

[0037] Upon command "K2", switch 5 is activated, connecting electric igniter 6 to additional capacitor 3, and the pyrotechnic delay device 7 of the remote arming time is started. After the remote arming time (T) has expired, дв ) The shutter 8 moves to the firing position. The second safety stage is released. At the same time, the switch 9, mechanically connected to the shutter 8, removes the bypass from the electric detonator 10. Simultaneously, the contacts of the switch 11 of the initial state circuit 12 open, indicating that the explosive device is armed via the firing circuit.

[0038] The "Short-circuit" command is sent to the input of the control unit 19, and a smoothly increasing voltage appears at the control input of the additional contactor 13. After a delay time (T зад), determined by the time constant of the IC 19, the voltage at the input of the additional contactor 13 exceeds the turn-on threshold voltage. The additional contactor 13 is triggered and connects the firing capacitor 14 through the current-limiting resistor 15 to the common wire of the power source 2. The firing capacitor 14 is charged and the third stage of protection is removed, i.e., the final arming of the explosive device in the electrical and firing circuits. Simultaneously, the electronic switch 20 opens, which supplies the voltage of the power source 2 to the input of the IC 19, ensuring that the additional contactor 13 is fixed in the closed state until the explosive device is triggered.

[0039] When an actuator command is received, the target sensor contactor 16 connects the charged combat capacitor 14 to the detonator 10, causing it to operate and the warhead of the ammunition to operate.

[0040] The proposed technical solution allows to increase the safety and reliability of the detonating device during its operation and use for its intended purpose.

[0041] The technical result of the invention is to increase the protection of the CU from impulse interference and interference from high-frequency EMI sources due to the use of an integrating circuit and an electronic key in the CU arming circuit.

Claims

A detonating device for warheads of ammunition comprising a power source, a power switch, an electric igniter, a contactor in the electric igniter circuit, a damper mechanically connected to a pyrotechnic retarder, an electric detonator, a combat capacitor, one pole of which is connected to the power source through the power switch, and the other to a current-limiting resistor connected to the common wire of the power source through an additional contactor, an additional capacitor, one pole of which is connected to the electric igniter, the power switch and the first high-resistance resistor connected to the common wire of the power source, and the other to a contactor in the electric igniter circuit and an additional resistor connected to the common wire of the power source, a second high-resistance resistor connected between the poles of the combat capacitor through a current-limiting resistor, wherein the damper is mechanically connected to the circuit breaker of the initial state,a target sensor contactor connected between the combat capacitor and the electric detonator, a disconnector mechanically connected to the damper, and a shunt electric detonator, characterized in that the output of the integrating circuit is connected to the control input of the additional contactor, and the control input of the electronic switch connected between the power source and the input of the integrating circuit is connected to the output of the additional contactor.

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