RU2563267C1 - Time fuse for shells of multiple artillery rocket systems - Google Patents

Abstract

FIELD: weapon and ammunition.

SUBSTANCE: invention relates to time fuse devices (TFD) for shells of multiple artillery rocket systems with cassette or separable warhead payloads (WHPL). The essence of the offered invention is that into the time fuse containing the input inductive coil, the rectifier, the power capacitor, the inertial contactor, the electronic time device connected to the safety and executive mechanism the low frequency filter with the cut-off frequency not exceeding a half of frequency of the unit carrier signal, the voltage limiter protecting from over voltage of the power capacitor and the voltage stabiliser caused by changes of level of induced voltage at the inlet induction coil of the fuse during installation, depending on the relative positioning of the transmitting coil of the installer and the input coil of the fuse, and additional limiters of control signals of the electronic temporary device, providing limitation by amplitude of control signals. The induction coil has branches which through the rectifier, the low frequency filter and the voltage limiter are connected to the input "Installation" and through the integrating circuit to the additional input "Reset" of the electronic temporary device and through the diode to the power capacitor and the voltage stabiliser input. The integrating circuit consisting of the resistor and the capacitor with the time constant considerably exceeding the duration of the setting impulse provides selection of the signal "Reset" of the electronic temporary device.

EFFECT: invention allows to improve efficiency of multiple collective.

3 cl, 3 dwg

Description

The invention relates to the field of military equipment, and mainly to remote explosive devices (TLD) for shells of multiple launch rocket systems (MLRS) with cluster or detachable warheads (warheads).

A feature of the area of use of shells is the normalized rate of fire, and this circumstance requires the installation of the fuse in automatic mode in a pause between starts of neighboring shells.

Known fuses that are installed remotely via a wire or inductive line, according to patents: US No. 6557450, IPC F42C 17/00, published May 6, 2003, US No. 6484115, IPC F42C 11/04, published November 19, 2002, US No. 6170377, IPC F42C 17/00, published 01/01/2001, US No. 6138547, IPC F42C 17/00, published 10/31/2000, US No. 5117732, IPC F42C 17/04, published 02.06.1992, US No. 4664013, IPC F42C 11/06, published 05/12/1987, US No. 4144815, IPC F42C 11/04, published on 03/20/1979, US No. 4022102 IPC F42C 17/00, published 05/10/1977, US No. 3371579, IPC F42C, published 05/03/1968 requiring direct mechanical or electrical contact fuse and its elements with the element E when the operation apparatus. These fuses can not be used for fuse projectile MLRS, located in the channel pipe launcher.

In the remote fuse of an artillery shell according to US patent No. 4750424, IPC F42C 9/00, published 06/14/1988, the installation of the fuse can occur automatically during loading and manually. The fuse contains a battery, an electronic temporary device, an installation ring for manual installation, a display for displaying entered information, a fire circuit, an initial blocking device (long cocking), a receiving coil of an inductive communication line with a resonating capacitor. When combining the installer’s transmitting coil with the fuse’s body, an alternating current flows through the installer’s coil and an alternating electromagnetic field arises, which, piercing the fuse’s receiving coil, excites alternating voltage at its terminals. After rectification, a constant voltage, supplied to the key circuit, connects the battery to the electronic temporary device. Installation signals containing information about the time of remote action are stored by an electronic temporary device. At the same time, information on the entered time appears on the fuse display. When fired, the temporary device lock is released and the countdown of the remote action begins. After the set time has elapsed, the electronic temporary device generates a “trigger” signal, which activates the fire chain, causing the warhead to trigger. With the manual installation of the fuse, the installation ring is rotated and the electrical contacts are closed, with the help of which electrical power is supplied to the electronic temporary device and a series of pulses are formed that establish the temporary device.

The use of this technical solution for multiple launch rocket systems presents significant difficulties, since complex and high-speed mechanisms are necessary for combining and uncoupling the coils during the firing process. Another disadvantage of the device is the placement of the receiving coil on the electrically conductive housing of the battery. Being a short-circuited coil inductively coupled to the receiving coil, the battery case reduces the quality factor of the receiving circuit, which leads to a decrease in the efficiency of the inductive communication and control line.

Known remote fuse of rockets of multiple launch rocket systems according to the patent of Russian Federation No. 2240493 C1, IPC 7 F42C 9/00, containing a receiving induction coil, a rectifier, a capacitor power source, pulse selector, inertial contactor, electronic temporary device and a safety mechanism. When installed through an installer’s coil (equipment for preparing and launching shells), an alternating current flows and an alternating electromagnetic field arises, which, penetrating the fuse’s receiving coil, excites an alternating voltage at its terminals. Signals containing information about the time of remote action are stored by an electronic temporary device. When fired, the temporary device lock is released and the countdown of the remote action begins. After the set time has elapsed, the electronic temporary device generates a “trip” signal to the fire chain, which activates the warhead.

The reasons that impede the obtaining of a technical result, which is ensured by the claimed invention, when using a remote fuse according to the patent of the Russian Federation No. 2240493 are as follows:

- the impossibility of ensuring operability at axial and radial mutual displacements of up to 20 mm of the receiving induction coil of the fuse and the transmitting induction coil of the installer (control equipment), due to technological tolerances in the manufacture of the fuse, rocket and launcher with the transmitting coil and causing a significant change in the amplitude of the signal induced at the receiving induction coil.

- the inability to reinstall the installed fuse when changing the conditions of use, due to the inability to bring the electronic temporary device to its original state.

The technical solution described in this patent, as the closest to the claimed technical essence and the achieved technical result, was chosen as a prototype.

Common features of the claimed invention with the prototype is the presence in the fuse of a receiving induction coil, a rectifier, a power capacitor, an inertial contactor, an electronic temporary device and a safety-actuating mechanism.

The task to which the present invention is directed is to improve the design of a remote fuse for rockets of multiple launch rocket systems, ensuring fuse operability with axial and radial mutual mixing of up to 20 mm of the receiving induction coil of the fuse and the transmitting induction coil of the installer, as well as the ability to reinstall the installed fuse.

The essence of the claimed invention lies in the fact that in the remote fuse of rockets of multiple launch rocket systems containing a receiving induction coil, a rectifier, a power capacitor, an inertial contactor, an electronic temporary device connected to a safety-actuating mechanism, a low-pass filter with a cutoff frequency is introduced not exceeding half the frequency of the carrier signal of the installation, highlighting the envelope of the signal of the installation, an integrating circuit, a limiter and a voltage stabilizer. The input of the low-pass filter is connected to the output of the rectifier, and its output is connected to the input of the voltage limiter, the output of which is connected to the input "Installation" and through the integrating circuit to the input "Reset" of the electronic temporary device. The output of the voltage limiter through the diode is connected to the power capacitor and the input of the voltage regulator. The output of the voltage stabilizer is connected to the power bus and through the contacts of the inertial contactor to the "Start" input of the electronic temporary device. The operating voltage of the voltage limiter is selected not less than the minimum allowable value of the input voltage of the stabilizer, but not exceeding the maximum allowable input voltage of the power capacitor and voltage stabilizer.

The device of the proposed technical solution is illustrated by drawings:

In FIG. 1 shows a diagram of a fuse.

In FIG. 2 shows a fuse diagram with one additional limiter.

In FIG. 3 shows a fuse circuit with two additional stops.

The fuse (Fig. 1) includes: a receiving coil 1, a rectifier 2, a low-pass filter 3, a voltage limiter 4, a power capacitor 5, a voltage regulator 6, an electronic temporary device 7, a safety-actuating mechanism 8, an inertial contactor 9, integrating chain 10.

The induction receiving coil 1 (Fig. 1) is connected by its taps to the input of the rectifier 2. The output of the rectifier 2 is connected through the low-pass filter 3 to the input of the voltage limiter 4. The output of the limiter is connected to the input 02 "Installation" and through the integrating circuit 10 to the additional input 01 "Reset" of the electronic temporary device 7. In addition, the output of the voltage limiter 4 through the diode VD2 is connected to the power capacitor 5 and the input of the voltage regulator 6. The output of the voltage regulator 6 is connected to the power bus 03 electronically a timing device 7 and to the first input 01 inertial contactor SA9, the relay when a linear acceleration in the active portion of the trajectory. The second output 02 of the inertial contactor 9 is connected to the input 04 "Start" of the electronic temporary device 7. Output 06 of the electronic temporary device 7 is connected to the input of the safety-actuating mechanism 8.

The passband of the low-pass filter 3 is selected in such a way as to ensure that the envelope of the installation signal is allocated to control the electronic temporary device 7. The cutoff frequency of the low-pass filter 3 is selected not to exceed half the carrier frequency of the setup signal, but to a larger envelope frequency of the information signal.

The voltage limiter 4 can be performed on resistors R1, R2, zener diode VD1 and transistor VT1. The voltage of the voltage limiter 4 is selected not less than the minimum allowable input voltage of the voltage stabilizer 6, but not more than the maximum allowable input voltage of the voltage stabilizer 6 and the maximum allowable voltage on the power capacitor 5.

The value of the limiting voltage determined by the voltage limiter 4, it is advisable to choose as large as possible, equal to or slightly less than the maximum permissible voltages on the power capacitor 5 and the input voltage of the voltage regulator 6. The more voltage to which the power capacitor 5 is charged, the more energy it can give to power the electronic temporary device 7 and the more so, ceteris paribus, the time of remote action will be able to count the electronic temporary device 7.

Integration chain 10 may be implemented as shown in FIG. 1, on resistor R3 and capacitor C1.

The power capacitor 5 can be performed on the capacitor C2.

The voltage to which voltage limiter 4 is configured may exceed the maximum allowable voltage supplied to input 02 "Installation" and input 01 "Reset" of the electronic temporary device 7. In this invention, it is proposed to exclude this excess by the two options shown in FIG. 2, 3.

In embodiment 1 shown in FIG. 2, one additional voltage limiter is included in the fuse circuit 11. An additional voltage limiter 11 is connected between the output of the voltage limiter 4 and the combined inputs of the integrating circuit 10 and 02 "Installing" the electronic temporary device 7. An additional voltage limiter 11 can be performed on the resistor R4 and the zener diode VD3 . The operating voltage of the additional voltage limiter 11 is selected to be greater than the minimum voltage of the logical unit at the inputs of the electronic temporary device 7, but not exceeding the allowable voltage for inputs 01 "Reset" and 02 "Installation" of the electronic temporary device 7.

The fuse circuit shown in FIG. 3 includes two additional independent voltage limiters 11, 12 for signals 01 “Reset” and 02 “Installation”. The first additional limiter 11 is connected between the output of the voltage limiter 4 and the input 02 "Installation" of the electronic temporary device 7. The second additional limiter 12 is connected between the output of the integrating circuit 10 and the input 01 "Reset" of the electronic temporary device 7.

An additional limiter 11 can be performed on the zener diode VD3 and the resistor R4. An additional limiter 12 can be performed on the zener diode VD4.

The operating voltage of the first additional limiter 11 is selected to be greater than the minimum voltage of the logical unit, but not exceeding the permissible voltage value at the input 02 "Setting" of the electronic temporary device 7. The operating voltage of the second additional limiter 12 is selected to be large of the minimum voltage of the logical unit, but not exceeding the permissible voltage value of input 01 "Reset" electronic temporary device 7.

The fuse is as follows.

Equipment for the preparation and launch of shells (installer) generates an installation signal to the transmitting induction coil (not shown in the drawings). At the induction receiving coil 1 (see Fig. 1), a signal appears in the form of alternating voltage pulses. Rectifier 2 converts the alternating voltage into a voltage of positive polarity. The low-pass filter 3 of the rectified voltage filters the carrier frequency and higher frequencies. The first part of the installation signals has a duration much longer than the time constant of the integrating circuit 10, and after the low-frequency filter 3 provides the charge of the power capacitor 5, and through the integrating chain 10, generating a signal to the output 01 "Reset" of the electronic temporary device 7. If the amplitude of the installation signal is more the actuation voltage of the voltage limiter 4, the latter, included in the work, ensures that the signal amplitude does not exceed the permissible value for the capacitor power 5, voltage stabilizer 6, etc. fuse circuit devices. Then, after a pause, a large tripled time constant of the integrating chain 10, by the following short pulses, the duration of which is much shorter than the time constant of the integrating chain 10, the required action time of the remote action of the fuse is set. These pulses are fed to input 02 "Installation" of an electronic temporary device 7, in which information about the required time of remote action is stored. This completes the installation of the fuse.

If it is necessary to reinstall the required remote time set in the fuse, the control equipment (installer) generates a signal similar to that used during the initial installation with information about the required remote time.

When the projectile starts, inertial overloads (acceleration) occur. The inertial contactor 9 is activated, and its contacts 01, 02 are closed. The input 04 "Start" of the electronic temporary device 7 receives a signal. The countdown of the action time begins, at the end of which the electronic temporary device 7, at its output 06, generates an output command arriving at the safety-actuating mechanism 8 and then to the separation of the monoblock or opening of the cluster warhead of the projectile.

The technical result is an improvement in the design of a remote fuse of rockets of multiple launch rocket systems, providing the ability to reinstall the installed fuse and operability with significant mutual displacements of the transmitting and receiving coils.

The technical result is achieved by introducing into the design of the fuse a low-pass filter that separates the envelope of the installation signal, an additional input "Reset" to restore the electronic temporary device, the input voltage limiter, which protects the power capacitor and voltage regulator from overvoltages occurring at the receiving induction coil and the rectifier during installation, and additional limiters of the control signals of the electronic temporary device, providing a limit on the amplitude of the control signals.

A remote fuse of rockets of multiple launch rocket systems made in accordance with the invention makes it possible to repeatedly reset the operating time and operability with significant mutual displacements of the transmitting and receiving coils, causing a significant change in the amplitude of the induced voltage of the installation signal from sample to sample.

Improving the efficiency of multiple launch rocket launch rocket systems using the claimed invention is confirmed by the results of laboratory and field tests.

Claims (3)

1. A remote fuse of rockets of multiple launch rocket systems containing a receiving induction coil, a rectifier, a power capacitor, an inertial contactor and an electronic temporary device connected to a safety-actuating mechanism, characterized in that a low-pass filter with a cutoff frequency is introduced into the fuse exceeding half the frequency of the carrier signal of the installation, an integrating circuit, a limiter and a voltage stabilizer, the input of the low-pass filter is connected to the output of the rectifier, and its output is connected to the input of the voltage limiter, the output of which is connected to the input "Installation" and through the integrating circuit to the input "Reset" of the electronic temporary device, in addition, the output of the voltage limiter through the diode is connected to the power capacitor and the input of the voltage regulator, the output of which is connected to the power bus and through the contacts of the inertial contactor to the "Start" input of the electronic temporary device, and the voltage of the voltage limiter is selected at least the minimum acceptable value the input voltage of the stabilizer, but not exceeding the maximum allowable input voltage of the power capacitor and voltage stabilizer. 2. The remote fuse according to claim 1, characterized in that between the output of the voltage limiter and the combined inputs of the integrating circuit and the "Installation" of the electronic temporary device, an additional limiter is turned on, and the response voltage of the additional limiter is selected to be greater than the minimum voltage of the logical unit of inputs of the electronic temporary device, but not exceeding the permissible voltage value for the inputs "Reset" and "Installation" of the electronic temporary device. 3. The remote fuse according to claim 1, characterized in that two additional voltage limiters are introduced into the fuse, the first of which is connected between the output of the voltage limiter and the "Installation" input of the electronic temporary device, and the second is connected to the output of the integrating circuit connected to the input "Reset" of the electronic temporary device, and the response voltage of the first additional limiter is selected to be greater than the minimum voltage of the logical unit, but not exceeding the permissible value voltage for the input "Installation" of the electronic temporary device, the response voltage of the second additional limiter is selected to be greater than the minimum voltage of the logical unit, but not exceeding the permissible voltage for the input "Reset" of the electronic temporary device.

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