RU2399861C1 - Method for measurement of parametres for obstacle penetration with thrown element, such as bullet or artillery shell, or cumulative jet, and device that realises this method - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: method for measurement of parametres for obstacle penetration with thrown element: bullet or artillery shell, or cumulative jet, consists in the fact that time intervals are measured required to pass through blocking planes of obstacle, located at a certain distance, and speed of thrown element passage between them is identified. Blocking planes represent primary metering converters in the form of two mutually-perpendicular frames introduced at a specified distance. Each frame comprises insulated conductors arranged in parallel with selected pitch. In each frame some ends of conductors are combined to each other and are connected to output of power supply source, and opposite ends - via appropriate resistors are combined and connected to according input of processing and registration device. As conductors are broken, coordinates of obstacle deformation with thrown element are registered in each blocking plane.

EFFECT: simplified process of cumulative jet motion speed registration, simplified design of device and improved noise immunity.

2 cl, 2 dwg

Description

The invention relates to the field of research of fast processes, and specifically to the registration of the movement of cumulative jets in the target barrier.

A known method for determining the flight time of a stream of particles (see V.A. Odintsov, 1988, Designs and operation. Methodological instructions for laboratory work. M., p. 18, Fig. 24), including throwing particles with an explosive charge and recording the duration Particle flow flight process.

A known method for determining the spatial coordinates of the test object at the time of its detonation (see GOST R51271-99. Pyrotechnic products. Certification test methods, section 6.4, 6.5), providing for high-speed photography from several positions of the test object in the process of its movement along the path and operation.

In the known method, at least two cameras and reference marks are installed in different positions in such a way that when firing the test object falls into the viewing angle of the cameras and all cameras see all the reference marks and ensure that the photography process starts until the test object is detonated. Then, from images from different cameras containing images of reference marks and the explosion of the test object at the same time, the coordinates of the point of detonation of the test object are determined by a given algorithm, which allows you to determine the spatial coordinates and position of the test object at several points of the flight path and the coordinates of the point triggering.

However, the limited viewing angle of the cameras requires reference to the expected area of operation of the product, and the limited duration of photography requires accurate synchronization with the moment of operation of the product, which in some cases cannot be ensured. In addition, weather conditions (insufficient illumination of the subject, fog, dustiness of the atmosphere, precipitation, etc.) greatly affect the accuracy and applicability of this method.

A known method of photographic registration of a cumulative jet (see patent RU No. 2248602, IPC G03B 39/00, G03B 41/00, publ. 2005.03.20), which consists in the fact that a laser is installed coaxially with the cumulative charge and its path is determined before the formation of the cumulative jet. movement to the target by the position of the laser beam in space, after which the optical system of the photorecorder is focused on a selected path location, the laser beam being directed from the base of the cumulative charge to the target, and the position of the laser beam in space is determined using a thread Uteem track beam compound a target with a beam spot of the laser output.

A known method and device for photoregistration of a cumulative jet (see M. Held. The Orthogonal Synchro-Streak Technique as a Diagnostic Tool, Particularly for Shaped Charge Jets, Propellants, Explosives, Pyrotechnics, pp11, 170-175, 1986), including laser installation, coaxial to the cumulative charge, and before the formation of the cumulative jet, determining the trajectory of its movement to the target by the position of the laser beam in space, the device containing a cumulative charge coaxial with the laser radiation source, a target located at a given distance from the charge, and a photographic recorder.

The disadvantages of the known technical solution: according to the laser beam, which is directed from the target to the center of the base of the charge, it is not possible to establish the axis of the cumulative charge coaxial with the laser beam, as a result of which it is impossible to determine the real path of the jet in space. As a result, jet deviations in the registration plane are possible, which will affect the qualitative and quantitative characteristics of photographic recording. High-speed photo recording uses fast lenses with fully open apertures. At the same time, the depth of field of the optical system is minimal. Therefore, small deviations (~ 30–40 mm) of the jet path in the plane defined by the laser beam and the axis of the optical system lead to “blurring” of the image of the cumulative jet on the film. If the beam is deflected in a plane perpendicular to the above, the jet will be registered not parallel to the edges of the film, which leads, firstly, to the difficulty of processing the received image and, secondly, to the loss of a part of the image of the jet, which may be outside the film. Since the laser beam is invisible, difficulties arise both in determining the distance from the base of the cumulative charge to the plane of photographic recording, and in focusing the optical photographic recorder on the path of the jet under the assumption that this path coincides with the laser beam. In the case when the trajectory of the jet does not coincide with the beam, the determination of these values can only be approximate, approximate.

A device for radiation monitoring (see US patent No. 3445655, IPC G01N 23/00, publ. 1969; S.V. Rumyantsev, 1974. Radiation flaw detection. M., Atomizdat, pp. 260-262) containing a radiation source and a shadow image recorder of a control object realized in the form of an X-ray film.

Non-destructive radiography of a cumulative jet in free flight and in an obstacle — targets — aluminum is known (see Applied Mechanics and Technical Physics. 2004, No. 2, vol. 45, pp. 147-155, G.A.Shvetsov, A.D. Matrosov (Destruction of cumulative jets by pulsed current) using a PIR - 100/240 X-ray pulsed apparatus with an exposure of 100 ns.

The X-ray diffraction pattern shows the process of introducing a cumulative jet into a steel barrier at a jet velocity of 7 km / s, with a fully compressed lining (pest) approaching the barrier and the stream continuing to flow, which has clear boundaries and extends to a distance of three pest lengths, and the explosive process is also visible when the jet touches an obstacle, the material of which is scattered at the entrance and exit of the punched channel. The diameter of the hole is approximately 10 times the diameter of the jet, and the part of the jet that has passed through the first barrier, essentially without interference, begins to penetrate into the second barrier.

A device for recording the results of shooting when determining the coordinates of the span of a bullet (see patent RU No. 2068538, IPC F41J 05/02, publ. 10/27/1996) containing a frame, a first and second group of photodetectors installed on two adjacent sides of the frame, each of the photodetectors includes a photodiode, an amplifier and a pulse shaper, as well as a processing and indication device, the first group of inputs of which are connected to the outputs of the first and second groups of photodetectors, respectively, in addition, the third and fourth groups of photodetectors installed located on two other adjacent sides of the frame, opposite the first and second groups of photodetectors, the outputs of the photodetectors of the third and fourth groups are connected respectively to the second group of inputs of the display processing device, two non-directional light sources, the first of which is located on the adjacency angle of the third and fourth groups of photodetectors, the second at the adjacency angle of the first and second groups of photodetectors, while the photodiodes of the first and second groups of photodetectors are directed to the first light source, and the photodiodes of the third and fourth groups of photodetectors are directed to a second light source.

A wire blocking device for a rifle ballistic measuring device is known (see GOST 28653-90 Rifle weapons. Terms and definitions), comprising a contact blocking device made in the form of a wire stretched or glued onto an insulating substrate, which generates an electrical signal as a result of wire breakage by a missile element.

A known target frame (see N.A. Zlatin, 1974. Ballistic installations and their applications in experimental studies. M., Nauka, pp. 125-130), containing strips connected to each other by a base, located on each other with a given step, detent sensors.

A device for recording the speed of missile striking elements (see application FR No. 2485181, IPC F41J 05/00, publ. 1981) containing a solid target, a unit for recording and processing information. The sensitive element of the launch unit is a punched target placed in front of a solid target.

A device is known (see US patent No. 4240640, IPC F41J 05/04, publ. 1980), comprising a sensor in the form of grid electrodes insulated by a gasket, and a sensor signal processing unit. The design of the sensor in the form of two parallel grid electrodes provides reliable registration of penetration of the target by the projectile.

The task most of the developments in the field of technology are aimed at solving is to improve the quality of registration and eliminate the negative impact of explosion products on image quality.

The technical result is to obtain new information and increase the reliability of data by fixing (measuring) the parameters of the passage of a cumulative jet through an obstacle while simplifying the process of recording its speed, as well as simplicity of design, low cost and high noise immunity.

The technical result is achieved by the fact that in the method of measuring the parameters of penetration of the obstacle by a missile element, for example, a bullet or an artillery shell, or a cumulative jet, which measures the time intervals of passage of the blocking planes of the obstacle at a given distance, with the subsequent determination of the speed of the missile element between them, and in the places of separation of the blocking planes two mutually perpendicular frames are placed with parallel insulated wires by breakers, on the gap of which, in each plane, the coordinates of the deformation of the barrier are fixed by the missile element.

The technical result is achieved by the fact that in the device for measuring the parameters of penetration of the obstacle by the missile element, containing the obstacle into which the primary measuring transducer implemented in the form of two mutually perpendicular frames from parallel made insulated conductors of a given step is inserted through a given discrete (measurement base) of which each frame are interconnected and connected to the output of a direct current source, and the opposite ends of each frame through the corresponding These resistors are combined and connected to the corresponding inputs of the processing and recording device.

The essence of the proposed technical solution is the electrical measurement method, which has several advantages: accuracy, ease of use, ease of execution, compactness, the ability to pair with an electronic computer through the use of primary measuring transducers, made of two vertical and horizontal frames, in which parallel insulated conductors are placed to each other with a given step, connected to a power source and loaded on given resistors, connected measure Yelnia chain with a processing and recording device, and after analog-digital conversion of the result of measurement is represented in digital form, which enabled a decision to implement a simple construction at low cost and high noise immunity.

Moreover, the speed V of the passage of the missile element through each discrete barrier can be determined by the difference in time dT between the primary measuring transducers and the known distance S between them, as V = S / dT.

Comparison of the proposed solution with the known technical solutions shows that it has a new set of essential features that, together with the known features, can successfully achieve the goal.

The essence of the technical solution is illustrated by drawings, figure 1 shows a block diagram of a device, figure 2 - primary measuring transducer.

The composition of the device:

1 - missile element;

2 - blocking plane;

3 - obstacle (rock) - target;

4 - primary measuring transducer;

5 - insulated conductor;

6 (1), 6 (2) - vertical and horizontal frames;

6 (3), 6 (4) - outputs of the vertical and horizontal frames of the primary measuring transducer;

7 - power source;

8 - resistors;

9 - device for processing and registration.

A device that implements this method works as follows.

The device that blocks the trajectory of the missile element 1 is an obstacle 3 conditionally divided by a series of blocking planes 2 placed relative to each other at a given distance, representing primary transducers 4 in the form of two vertical and horizontal frames 6 (1), 6 (2) in which insulated conductors 5 (made of thin wire or metal foil) are located parallel to each other with a given pitch, the area of which overlaps the cross-sectional area of the barrier 3, and perpendicular to the trajectory of the registered missile element 1.

When the missile element 1 passes through the blocking plane 2 of the frames 6 (1), 6 (2), both horizontal and vertical insulated conductors 5 break, and potential surges occur at the signal pick-up points of the primary transducer 4, which are respectively connected by the measuring circuit to a processing and recording device that generates a signal recorded by the processing and registration device 9, which determine the points of the path of the cumulative jet in each discrete blocking oskostey 2 3 barriers.

The technical and economic effect is to obtain new information and increase the reliability of data by fixing (measuring) the parameters of the passage of a cumulative jet through an obstacle while simplifying the process of recording its speed.

Claims (2)

1. The method of measuring the parameters of penetration of an obstacle by a missile element: a bullet or an artillery shell, or a cumulative jet, which consists in measuring the time intervals of passage of the blocking planes of the obstacle at a given distance, and determining the speed of the missile element between them, and the said blocking planes they are two mutually perpendicular frames, each of which contains parallel-made insulated conductors, the gap of which is fixed in each blocking plane, the coordinates of the deformation of the barrier by the missile element. 2. A device for measuring the parameters of penetration of an obstacle by a missile element: a bullet or an artillery shell, or a cumulative jet, containing an obstacle into which primary measuring transducers are implemented over a given distance, made in the form of two mutually perpendicular frames, each of which contains parallel steps with a selected step insulated conductors, in each frame the beginnings of which are interconnected and connected to the output of the power source, and the ends through the corresponding resistors are combined are connected to the corresponding input of the processing and registration device.

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