RU2369830C1 - Method for detection of incendiary property of high explosive fragmentation projectile and device for its realisation - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: invention is related to the field of ammunition testing and may be used to detect incendiary action of projectiles. Invention consists in firing of test projectiles at imitator of fuel tank via screen arranged in the form of dural sheet, screen strike-through, creation of small heated particles - heated dispersed metal, creation of shot hole in imitator of fuel tank. At the same time direct contact is provided between heated particles - heated dispersed metal, products of explosion, fragments, vapors and fuel flowing out of fuel tank imitator shot hole. Due to that fuel ignition and burning takes place. Light energy coefficient K_LE is identified as ratio of explosion products glowing time to time of explosion products volume growth in test high explosive fragmentation projectile. Explosion products emission intensity coefficient K_I is defined as ratio of intensity of test and reference projectiles emission, and igniting property coefficient K_IG is defined for test high explosive fragmentation projectile as product of light energy and explosion products emission intensity coefficients K_LE K_I.

EFFECT: higher information value.

2 cl, 2 dwg

Description

The invention relates to the field of testing of ammunition and can be used to determine the incendiary effect of shells.

There is a method of determining the incendiary effect of fragments, which consists in firing fragments of various masses having different meeting speeds through the screen over fuel tanks located in the aircraft structure, punching the screen in the form of duralumin skin and forming small hot particles - red-hot dispersed metal, the formation of holes in the fuel tank the implementation of direct contact of hot particles and vapors pouring out of the fuel hole, ignition and subsequent combustion of fuel, fix of the fact of ignition and measurement of specific impulse, determining the dependence of the probability of ignition of fuel tanks on the mass of fragments and their speed at the moment of impact based on the values of specific impulse and the known dependence of the probability of ignition on specific impulse / 1 /.

A device for determining the ignitability of fragments, which contains a throwing device with a fragment, the target environment, consisting of a screen and a fuel tank, the screen is made in the form of a duralumin sheet installed in front of the fuel tank, as well as a fragment speed recorder, a transverse fragment area recorder, a calculator, the first and second inputs of which are connected to the outputs of the velocity detector of the fragments and the registrar of the cross-sectional area of the fragment / 1 /.

The disadvantage of this method and device is the inability to determine the incendiary ability of a high-explosive fragmentation projectile.

Closest to the invention is a method for determining the incendiary effect of a projectile, which consists in firing shells through a screen at a fuel tank simulator, punching a screen in the form of a duralumin sheet, the formation of small hot particles - a red-hot dispersed metal, the formation of a hole in the fuel tank, making direct contact of hot particles - red-hot dispersed metal, explosion products, splinters and fuel and vapors pouring out of a fuel hole, ignition and burning fuel ignition fact fixation / 2 /.

Closest to the invention is a device for determining the ignitability of high-explosive shells, containing an experimental projectile, target environment, consisting of a screen and a fuel tank, and the screen is made in the form of a duralumin sheet installed in front of the fuel tank / 2 /.

The disadvantage of the data of the method and device is the inability to determine the quantitative values of the incendiary ability of the projectile.

The purpose of the invention is to increase the information content of determining the incendiary ability of a high-explosive fragmentation projectile by measuring the coefficient K _{s of the} incendiary ability of a high-explosive fragmentation projectile.

To achieve the objective of the invention in a method for determining the incendiary effect of a projectile, which consists in firing shells at a fuel tank simulator through a screen, punching a duralumin sheet, the formation of small hot particles - a hot dispersed metal, the formation of a hole in the fuel tank, the direct contact of hot particles - a hot, dispersed metal , explosion products, fragments and vapors spilling from a fuel hole, ignition and combustion of fuel, fixing the fact of burning out the fuel, further comprising determining the coefficient K _se luminous energy as a ratio of the emission of the explosion products to the rise time of the volume of the explosion products of fragmentation of the projectile, determines the coefficient K _and the intensity of the explosion products as the ratio of the radiation intensity experienced and standard projectiles determined coefficient K _of incendiary capacity high-explosive projectile as the product of the coefficients of light energy and the intensity of the explosion products K _se · K _and .

In order to achieve the objective of the invention, a radiation detector is additionally introduced into the device for determining the ignition ability of a high-explosive fragmentation projectile containing a propelling device, an experimental projectile, target environment consisting of a screen and a fuel tank, the screen being made in the form of a duralumin sheet installed in front of the fuel tank, optically matched with the test projectile rupture site, a signal processing unit, which consists of the first and second differentiating circuit, a limiter, the first, second, third and the fourth elements of And, the first and second counters, pulse generator, inverter, first and second dividers, integrator, key, analog-to-digital converter, reference signal setter, multiplier, indicator and “Zero setting” button, and the output of the radiation receiver is connected to the first inputs of the first, second, third and fourth elements And, respectively, directly, through the first differentiating circuit and limiter, as well as through the inverter, the output of the pulse generator is connected to the second inputs of the first and second about the And elements, the outputs of which, respectively, through the first and second counters are connected to the second inputs of the third and fourth I respectively, the outputs of which are connected respectively to the first and second inputs of the divider, in addition, the output of the radiation receiver through an integrator, a key, and an analog-to-digital converter are connected with the first input of the second divider, the second input of which is connected to the output of the reference signal setter, and the output is with the second input of the multiplier, the first input of which is connected to the output of the first divider, and you od - to the input of the indicator, the inverter output is furthermore coupled to a first input key, the power source through the button "Set Zero" diffrentsiruyuschuyu second circuit connected to the second inputs of the first and second counters, and an analog-to-digital converter.

New features that have significant differences in the method is the following set of actions.

1. The coefficient K _{ce of} light energy is determined as the ratio of the luminescence time of the products of the explosion of a fragmentation projectile to the time of the increase in the volume of the products of the explosion.

2. Determine the coefficient K _{and the} intensity of the explosion products as the ratio of the radiation intensity of the experimental and reference shells.

3. Determine the coefficient K _{s of} incendiary ability of a high-explosive fragmentation projectile as the product of the coefficients of light energy and the intensity of the explosion products K _s · K _and .

Significant distinguishing features of the device are new elements: a radiation receiver, a signal processing unit and communication between known and new elements.

Figure 1 shows a block diagram of a device for implementing the method for determining the incendiary system of a high-explosive fragmentation projectile.

Figure 2 is a structural diagram of a signal processing unit.

The device comprises a throwing device 1, an experimental projectile 2, a screen 3, a fuel tank 4, a radiation receiver 5 optically matched to the rupture site of the experimental projectile 2, a signal processing unit 6, which consists of the first 7 and second 8 differentiating circuits, a limiter 9, the first 10, second 11, third 12 and fourth 13 elements And, first 14 and second 15 counters, pulse generator 16, inverter 17, first 18 and second 19 dividers, integrator 20, key 21, analog-to-digital converter 22, reference signal generator 23 multiplier 24 Ora 25 and buttons 26 "Zeroing". Moreover, the output of the radiation receiver 5 is connected to the first inputs of the first 10, second 11, third 12 and fourth 13 elements And, respectively, directly through the first 7 differentiating circuit and limiter 9, as well as through the inverter 17. The output of the pulse generator 13 is connected to the second inputs of the first 7 and the second 8 AND elements, the outputs of which, respectively, through the first 14 and second 15 counters are connected to the second inputs of the third 12 and fourth 13, respectively, And the outputs of which are connected respectively with the first and second inputs divides spelling 18. In addition, the output of the radiation receiver 5 through the integrator 20, the key 21 and the analog-to-digital converter 22 is connected to the first input of the second divider 19, the second input of which is connected to the output of the master signal setter 23, and the output to the second input of the multiplier 21, the first input of which is connected to the output of the first divider 18, and the output is connected to the indicator 25. The output of the inverter 17 is connected to the first input of the key 21. The power source through the button "Zero", the second 8 differentiating circuit is connected to the second inputs of the first 14 and second 15 counters kov and analog-to-digital Converter 22. The integrator 20 is designed to obtain the total light flux resulting from the explosion of an experimental high-explosive fragmentation projectile (OFS).

The key 21 is designed to fix the moment of glow of the explosion products generated by the explosion of a high-explosive fragmentation projectile.

An analog-to-digital converter 22 is designed to convert an analog signal into a digital code. The reference signal setter 23 is designed to provide a reference signal corresponding to the light pulse of an explosive taken as a reference, and can be made in the form of a digital code setter.

A method for determining the incendiary ability of a high-explosive fragmentation projectile is as follows.

Before the experiment, the optical receiver 5 of the radiation is optically matched with the rupture field of the experimental high-explosive high-explosive projectile 2. When the “Zero setting” button 26 is pressed, the differentiating circuit 8 generates a pulse that transfers the first 14, second 15 counters, and analog-to-digital converter 22 to the initial state. Then the device is ready to work.

When the throwing device 1 is triggered, the experimental projectile 2 moves in the direction of the fuel tank 4, after breaking through the screen 3, an emitting cloud of explosion products, fragments and hot dispersed metal, as well as a hole in the fuel tank 4 are formed. Then, the explosion products, fragments, hot particles and vapors of fuel spilling out of a hole; ignition and subsequent combustion of fuel.

The cloud of explosion products, acting on the input of the radiation receiver 5, leads to the formation of a signal at its output.

The time for measuring the glow of the explosion products is based on measuring the duration of the pulse from the output of the receiver 5 to the first input of the first 10 element And, through the second input of which pulses are received from the output of the generator 16 pulses to the input of the first 14 pulse counter.

The time of formation of the luminous region of the explosion products, i.e. the time the explosion products reach the maximum volume is measured on the basis of measuring the duration of a positive pulse from the output of the first 7 differentiating circuit. When exposed to the first differentiating circuit 7 of the signal taken from the output of the radiation receiver 5, two bipolar pulses are formed at its output. The duration of a positive pulse is equal to the time of formation of the luminous region of the explosion products, i.e. the time the explosion products reach their maximum volume.

The limiter 9 provides the formation of a positive pulse at the output, equal in duration to the rise time of the signal front taken from the output of the radiation receiver 5.

When the signal from the output of the limiter 9 to the second input of the element And, through its first input, the pulses from the output of the generator 16 pulses are fed to the input of the second 15 counter, the output of which is generated a certain code proportional to the rise time of the signal front taken from the output of the radiation receiver 5 .

From the moment a signal appears at the output of the radiation receiver 3 at the output of the inverter 17, the signal disappears, which leads to the closure of the third 12 and fourth 13 elements, respectively, through the first inputs. With the disappearance of the pulse at the output of the radiation receiver 3, an opening signal appears at the output of the inverter 17, which allows pass the corresponding codes from the outputs of the first 14 and second 15 counters, respectively, to the first and second inputs of the divider 18.

At the output of the divider 18, a signal is generated equal to the ratio of the time of the glow of the explosion products to the time the explosion products reach the maximum volume.

The integrator 20 provides integration of the light flux resulting from the explosion of a high-explosive fragmentation projectile 2.

From the output of the radiation receiver 5, the signal through the integrator 20 is fed to the first input of the key 21, the second input of which is supplied with an enable signal from the inverter 17, which is formed after the luminescence of the products of the explosion of the experimental projectile 2 ceases. the second input of the divider 19, the first input of which receives a signal from the output of the master 23 of the reference signal. At the output of the divider 19, a signal is generated equal to the ratio of the intensity of the glow of the explosion products of the experimental and reference shells.

The first and second inputs of the multiplier 24 receive signals from the outputs of the first 18 and second 19 dividers, respectively, equal to the ratio of the luminescence time of the explosion products to the time the explosion products reach the maximum volume K _ce and the ratio of the luminescence intensity of the explosion products of the experimental and reference shells K _and .

From the output of the multiplier 24, a signal equal to the coefficient K _s = K _sec · K _{and the} incendiary ability of the projectile 2 is reflected in the form of digital information on the indicator 25.

The application of the proposed method and device can improve the reliability of determining the incendiary ability of high-explosive shells by taking into account the individual incendiary features of the shell.

Information sources

1. A.N. Dorofeev, A.P. Morozov, R.S. Sargsyan "Aviation ammunition." - M.: VVIA named after prof. N.E. Zhukovsky, 1978, p.234.

2. NN Danilov, P.S. Goryushkin, A.E. Didych and others. "Tasks for landfill work." - Daugavpils: Daugavpils Higher Aviation Engineering College of Air Defense named after J.Fabricius, 1977, p. 42 (prototype).

Claims (2)

1. A method for determining the ignitability of a high-explosive fragmentation projectile, including firing experimental shells at a fuel tank simulator through a screen made in the form of a duralumin sheet, punching a screen, the formation of small hot particles of dispersed metal, the formation of a hole in the fuel tank simulator, direct contact of small hot particles of dispersed metal, explosion products, fragments, vapors and fuel tank simulator pouring out of a hole, ignition and fuel combustion, fixing the fact of fuel ignition, characterized in that they determine the K coefficient of light energy _SE as the ratio of the luminescence time of the explosion products to the rise time of the volume of the explosion products of an experimental high-explosive fragmentation projectile, determine the coefficient K _AND the radiation intensity of the explosion products as the ratio of the radiation intensity of the experimental and standard projectiles and determine the coefficient K _W incendiary ability of a high-explosive fragmentation projectile as the product of the coefficients of light energy and intensity radiation of explosion products K _SE K _I. 2. A device for determining the ignitability of a high-explosive fragmentation projectile, comprising a propelling device, an experimental high-explosive fragmentation projectile, target environment consisting of a screen and a fuel tank, the screen being made in the form of a duralumin sheet mounted in front of the fuel tank, characterized in that it equipped with a radiation receiver, optically matched with the place of rupture of the experimental projectile, and a signal processing unit, consisting of the first and second differentiating circuit, limiter, first, second, third and the fourth elements of And, the first and second counters, pulse generator, inverter, first and second dividers, integrator, key, analog-to-digital converter, reference signal setter, multiplier, indicator and “Zero setting” button, and the output of the radiation receiver is connected to the first inputs of the first, second, third and fourth elements AND, respectively, directly through the first differentiating circuit and limiter, as well as through the inverter, the output of the pulse generator is connected to the second inputs of the first and second about the elements And, the outputs of which, respectively, through the first inputs of the first and second counters are connected to the second inputs of the third and fourth elements, respectively, the outputs of which are connected respectively with the first and second inputs of the first divider, the output of the radiation receiver through the integrator, the second input of the key and analog the digital converter is connected to the first input of the second divider, the second input of which is connected to the output of the reference signal setter, and the output is connected to the second input of the multiplier, the first input of which is connected to the output home of the first divider, and an output - to the input of the indicator, the inverter output is furthermore coupled to a first input key, the power source - after the button "Set Zero", the second is differentiated circuit is coupled to second inputs of the first and second counters, and an analog-to-digital converter.

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