RU2685011C1 - Tray for throwing measuring probe - Google Patents

Abstract

FIELD: physics.SUBSTANCE: invention relates to facilities and technologies for acceleration of thrown physical body: element, object, measuring assembly in throwing device to preset initial speed of body movement in space. Tray for a throwable measuring probe, which is a cylindrical housing, comprising a pushing and retaining parts not destructible during acceleration in propulsion device, made in form of single element or divided into two or more identical longitudinal parts. In the retaining part there is a cavity for placement of the meta probe into it. In body of retaining part there is a through longitudinal slot formed by planes located at an angle to each other, wherein maximum size of slot in transverse direction in place of its abutment to cavity is less than transverse dimension of measuring probe, and maximum cross dimension of slit on outer surface of retaining part is less than diameter of retaining part. Invention is aimed at providing stability of obtaining measurement results when performing measurements in field and laboratory conditions by creating conditions for regular laying of communication wire at acceleration of assembly with measuring probe.EFFECT: higher reliability of obtaining data on process of probe operation by obtaining regular form of communication wire at its movement ahead of assembly to muzzle section, and, further, during movement behind probe on trajectory.6 cl, 4 dwg

Description

The invention relates to the field of means and technologies for ensuring the acceleration of the missile physical body (element, object, measuring assembly) in the throwing device to a given initial velocity of the body in space. Contact dynamic sounding of rheological media is carried out in field and laboratory conditions using missile measuring probes with onboard equipment. The information obtained during the measurements is used to obtain experimental data on the dynamic mechanical properties of the medium under study or of a specific section of the surface under study.

Complexes for dynamic sensing of rheological media contain ballistic modules with wired electrical communication nodes of the measuring and recording equipment of missile probes with onboard measuring transducers (sensors) or elements of control equipment housed in the throwing measuring probe for dynamic sensing of rheological media. It is also known a device designed to conduct comprehensive studies of the soil environment of the landing area or the installation of vehicles and the surface of celestial bodies (“Penetrator for studying the surface of celestial bodies”, patent RU 2111900, B64G 1/00, Publ. 27.05.1998). This device is a mobile complex of dynamic sensing of rheological media. The penetrator contains a detachable measuring probe that penetrates the test medium with initial velocities in the medium in the range from 50 m / s to 100 m / s. The penetrator also contains a module for providing wired electrical communication of the measuring and recording equipment of the penetrator with onboard measuring transducers (sensors) or elements of control equipment located in the measuring probe. This module is a tray for the measuring probe. The probe is separated from the module, penetrates the surface under study and transmits measurement information from sensors placed in the probe to the penetrator equipment at the final stage of the ballistic cycle - the terminal (terminal) ballistic stage of the probe.

The pallet (master) of the pushing type is used under laboratory conditions to communicate the given speed to the throwing body. Traditionally, the pallet is made in the form of an assembly of a pushing (pushing pallet) and centering (centering sleeve) fastened to it parts that do not collapse during assembly acceleration in a throwing device (Means of destruction and ammunition: Textbook / AV Babkin, V.А. Veldanov, EF Gryaznov, and others; Under the editorship of VV Selivanov. - M .: Publishing House of the Moscow State Technical University named after NE Bauman, 2008, Chapter 8.4, p. 584, Fig. 8.14.a). If a measuring probe containing an onboard equipment is placed in the assembly, then it can be designated by the term “measuring assembly”.

When conducting ballistic tests to determine the functioning parameters of the propelled probe or the motion parameters of the probes on the trajectory and during their movement in the rheological environment, it is necessary to ensure the safety of the probe and the pallet in the throwing device. Safety is achieved while observing the optimal combination of limiting factors: maximum assembly speed, strength of materials of the propelling device and assembly, acceleration path size, maximum pressure value at the bottom of the pallet pushing part, full pressure pulse value and even pressure pulse shape (Ballistic installations and their use in experimental researches, under the editorship of NA Zlatin and GI Mishin, Main edition of the physical and mathematical literature of the publishing house “Science”, 1974, Chapter 2.8. “Pallets, missile bodies and diaphragms ", pp. 109-112, fig. Fig. 2.40. and 2.42.).

A well-known analogue of the proposed device is a pallet for the missile element and a method for separating the pallet from the missile (patent RU 2460964, F42B 14/06. Publ. 10.09. 2012. Bull. No. 25). In this technical solution, a pusher-type pallet, intended for testing the missile elements with ballistic measurements on a movement path in space, contains a pushing part and centering parts fastened together with the possibility of disconnection. The description below of the functioning of the known pallet during measurements gives an idea of the functions of the proposed technical solution in the measurement process. In the centering part there is a cavity for accommodating the missile element in it. In bonded form, the pallet and the missile element represent the missile assembly. When testing, the assembly during acceleration in the throwing device informs the throwing element the velocity specified in the experience of moving the element in the space between the throwing device and the target. The conditions for carrying out experience in tests ensure the safety of each of the parts and the missile element of the assembly during the acceleration process. During acceleration, in the process of movement of the assembly along the barrel bore, a pressure acts on the bottom of the pushing part of the pallet, determining the magnitude of the force acting on the assembly in the direction of its movement. The inertial forces, in turn, act on the pushing part of the pallet from the side of the missile element and the centering part

In the private version of the known pallet in the centering part of the pallet is a through slot. This option is designed to be placed in the slot electrical cables associated with instrumentation, which facilitates the creation of conditions for the smooth functioning of the elements of the data transmission system from the missile element to the recorder during the test.

The technical result of the application in testing of this pallet is smooth-bore ballistic installations with a limited distance from the muzzle of the barrel to the target. The analysis of video recordings shows that during the assembly movement, a section of the communication wire, when the measuring probe moves in the throwing device, is accelerated and formed into a strand of wire that is moved in front of the assembly as a result of an arbitrary, unregulated process. Upon its further disintegration, this twist takes various forms in space as it moves behind the probe on the trajectory and in the medium, which makes it necessary to implement a large number of experiments in a series of tests in order to obtain a reliable result. Thus, when using this technical solution, the problem of increasing the productivity of a series of experiments in testing to obtain the required data is not solved.

All the known solutions considered do not, however, provide for the implementation of the technical task of increasing the performance of a series of experiments in testing to obtain the required data from measuring missile probes using continuous wired electrical communication.

The closest analogue of the proposed technical solution is a pallet for throwing low-strength impactors, which is a split cylindrical body, made of two or more identical longitudinal components and having a cavity for accommodating the impactor and an outside curb mounted on the outside. This pallet is known from the source EN 2118791 C1, 10.09.1998, and adopted as a prototype, as containing the largest number of basic design features of the proposed solution.

The present invention is aimed at ensuring, when conducting measurements in field and laboratory conditions, the stability of obtaining measurement results by creating conditions for the regular installation of the communication wire during acceleration of the assembly with the measuring probe. The reliability of obtaining data on the operation of the probe is also increased, by obtaining a regular form of the communication wire as it moves ahead of the assembly to the muzzle and, further, as it moves past the probe along a trajectory.

The technical objective of the proposed pallet for the missile probe is to create the necessary structural conditions and elements to increase the reliability and regularity of obtaining reliable data when using measuring probes.

By ensuring the regularity of the shape of the moving communication wire during the operation of the measuring probes, the number of necessary experiments in a series is reduced to obtain reliable data on the process under study. There is also provided a reduction in the length of the ballistic route required for the experiments and the elimination of the influence of the means of their separation with the pallet on the operation of the measuring probes.

These results are achieved by the fact that the pallet for the missile measuring probe is made constructively with a single element containing two characteristic zones or parts. In the course of the throwing process, the pushing part provides an obturation and force transmission for conducting the missile measuring probe in the starting device. The holding part provides in the process of maintaining the retention of the probe, its centering and the translational motion of the probe during acceleration. The holding part is made with a cavity, for example, axisymmetric. During the acceleration process, a measuring probe is placed in the starting device in the holding part of the pallet. The probe contains onboard equipment and elements that provide continuous, for example, wired electrical communication with external measuring and recording equipment. The combination of the pallet and the measuring probe is a throw-away measuring assembly. A longitudinal slit is made in the holding part of the pallet to accommodate elements for ensuring continuous communication, for example, wired, when the assembly is moved within the barrel. The slot in the holding part is formed by two planes at an angle to each other. The angle between the planes is determined by the required volume required to place the elements to ensure continuous communication when the assembly is moved inside the barrel to the muzzle of the CU. The maximum size of the slot in the transverse direction at its junction to the cavity is smaller than the transverse dimension of the measuring probe, and the maximum transverse dimension of the slot on the surface of the holding part is smaller than the diameter of the holding part. In order to expand the ballistic characteristics of the throwing, a material sampling was made in the holding part. In order to accommodate and preserve integrity while accelerating elements to ensure continuous connection of the measuring probe, a sample was made in the pushing part according to the form of the placed elements with a volume exceeding the volume of the placed elements.

The slot in the holding part can be formed by a single flat surface, which improves the manufacturability of the pallet through the use of simplified cutting technologies. Option multi-element tray made at least one surface of the connector in the pushing and holding parts. The surfaces of the connector of each of the elements are executed with a form corresponding to each other. A sample of material on the surface of the connector of one element and the corresponding protrusion of the surface of the connector of another element excludes the mutual displacement of the touching separable elements of the pallet during its acceleration when throwing.

The invention is illustrated in the drawings, which show:

in fig. 1 - a cross-section of the pallet in the version with internal samples of the material;

in fig. 2 - a variant of the pallet, allowing the use of simplified manufacturing technology;

in fig. 3 - pallet element with the surface of the connector (left side of the pallet in the direction of movement);

in fig. 4 - pallet element with a connector surface (right side of the pallet in the direction of movement).

As shown in FIG. 1, the pallet for the missile measuring probe is made structurally as a single element containing two characteristic zones or parts. The pushing part 1 provides in the process of throwing the obturation and the transmission of forces for the conduct of the missile measuring probe in the launching device. The holding part 2 provides in the process of maintaining the holding of the probe, its centering and the translational movement of the probe during acceleration. The proposed pallet is classified as a push-type pallet and, moreover, provides testing with ballistic measurements of the functioning parameters of the propelled probes on the entire trajectory of their movement in space. The holding part 2 is made with a cavity, for example, axisymmetric, as in FIG. 1. In the acceleration process, a measuring probe is placed in the holding part 2 of the pallet in a starting device, for example, a ballistic unit (CU). The probe contains onboard equipment and elements that provide continuous, for example, wired electrical communication with external measuring and recording equipment. The combination of the pallet and the measuring probe is a throw-away measuring assembly. In the holding part 2 of the pallet, a longitudinal slot is made to accommodate elements for ensuring continuous communication, for example, wired, when the assembly is moved within the barrel. The slot in the holding part 2 is formed by planes 3 and 4, which are angled to each other. The angle between the planes 3 and 4 is determined by the required volume required to place the elements to ensure continuous communication when the assembly is moved inside the barrel to the muzzle of the CU. The angular arrangement of the planes contributes to the regular shape of the bends of the wire in the process of laying it in the cavity at the site of movement of the assembly to the muzzle. The maximum size of the slot in the transverse direction at its junction to the cavity is smaller than the transverse dimension of the probe, and the maximum transverse dimension of the slot on the surface of the holding part 2 is smaller than the diameter of the holding part 2. This range of dimensions of the slot keeps the initial position of the measuring probe relative to the axial line of the barrel until Move the assembly for the muzzle cut. At the stage of moving the assembly outside the barrel, sampling of the material in the lower part of the pallet and the longitudinal slot ensure unimpeded separation of the measuring probe and communication elements from the pallet and the regular functioning of the elements providing continuous, for example, wired electrical communication with external measuring and recording equipment. In order to expand the ballistic characteristics of the throwing, material 5 was sampled in the holding part 2, for example, in the form of elongated cylinders 7. FIG. 1 on the right, these internal samples 5 are shown in dashed lines. If the conditions of the test ensure the preservation of the shape of the pallet during acceleration, then such samples 5, for example, performed using 3D technology, help to reduce the mass of the pallet. In order to accommodate and preserve integrity while accelerating elements to ensure continuous connection of the measuring probe, in the pushing part 1, a sample 6 was made of the shape of the placed elements with a volume exceeding the volume of the placed elements.

In the embodiment of the pallet in FIG. 2, the slot in the holding part 2 is formed by a single flat surface 8, which improves the manufacturability of the pallet manufacturing by using simplified cutting technologies. With the same purpose in the manufacture in the pushing part 1 of the pallet sample 9 can be used drilling technology.

Presented in FIG. 3 and FIG. The 4th variant of the multi-element pallet provides faster separation of the pallet from the measuring probe at the stage of assembly movement behind the barrel muzzle. This option is used to reduce the separation distance, which is important in the laboratory to reduce the required length of the ballistic route. Multi-element tray (in this case, a two-element) is made of at least one surface of the connector 10 in the pushing 1 and holding 2 parts. The surfaces of the connector of each of the elements are executed with a form corresponding to each other.

Presented in FIG. 3, a sample of material 11 and its corresponding protrusion 12 in FIG. 4 exclude the mutual displacement of the adjoining detachable elements of the pallet in the process of its acceleration when throwing. To enhance the sealing properties of the pallet during its movement inside the trunk of the CU, the surface of the connector of the contacting elements of the pallet in the transverse surface direction can be blocked by mutual sampling and projections of the material in its pushing part. The shape of the samples and protrusions is selected similar to the shape of the sample 11 (Fig. 3) and the protrusion 12 on (Fig. 4). In order to facilitate the separation of elements when they move beyond the muzzle cut, the shape of the protrusion on the surface of the connector in the pushing 1 and holding 2 parts of the pallet may be wedge-shaped and not shown in the figures. In order to influence the elements of continuous connection moving in front of the pallet, at least one longitudinal slit can be made in the pushing part 1 on one side or on both sides of sample 6 in FIG. 1 (or 9 in Fig. 2) in the form of the placed elements of the measuring probe (also not shown in the figures). The same goal can be achieved when performing the pushing part 1 of the longitudinal holes of the required diameter.

A sample of material in the front end of the elements with a conical surface 13 (Fig. 3) provides for the separation of elements from the measuring probe in the transverse direction relative to the path of movement. A sample of material 14 (FIG. 4), made in the pushing parts of the elements, has the same purpose as sample 6 in FIG. 1. A sample of material 15 (Fig. 3), made on the outer surface of the pallet elements helps to facilitate it and reduce the area of the outer surface of the pallet in contact with the inner surface of the barrel of the CU. These factors increase the probable speed parameters of the ballistics probes.

The proposed solution is implemented in experiments with testing with continuous recording of the parameters of the functioning of the measuring probes, in various ways, when they move in the barrel of the control unit, on the trajectory and in the studied medium. In the tests carried out, high-speed (up to 120,000 frames per second) video recording of the functioning of a continuous electrical communication wire at all stages of the ballistic cycle was also implemented. In the experiments, the diameter of the throwing measuring probe was 30, 50 and 80 mm, and the speed of movement of the pallets in the zone of their movement behind the muzzle section of the CU was realized in the experiments in the speed range of 20-320 m / s.

Claims (6)

1. A pallet for a throwing measuring probe, which is a cylindrical body that includes pushing and holding parts that do not collapse during acceleration in the throwing device, made as a single element or divided into two or more identical longitudinal parts, with a cavity in the holding part to accommodate a missile measuring probe, characterized in that the body of the holding part has a through longitudinal slot formed by planes at an angle to each other to a friend, the maximum size of the slot in the transverse direction at its junction with the cavity is smaller than the transverse dimension of the measuring probe, and the maximum transverse dimension of the slot on the outer surface of the holding part is smaller than the diameter of the holding part. 2. A pallet according to claim 1, characterized in that cavities are made in the body of the holding part. 3. A pallet according to claim 1, characterized in that in the pushing part of the housing from the cavity side there is a recess in the shape of the placed elements of the measuring probe with a volume exceeding the volume of the placed elements. 4. A pallet according to claim 1, characterized in that for a construction with division into longitudinal parts, the longitudinal components of the body are made with mounting between them with at least one mounting in the pushing or holding parts, made in the form of a protrusion and a reciprocal recess. 5. The pallet according to claim 4, characterized in that the protrusion located in the pushing part of the pallet is made in the transverse direction. 6. A pallet according to claim 1, characterized in that at least one end-to-end longitudinal through channel is made in the pushing part with the output on one or both sides of the recess in the shape of the placed elements of the measuring probe.

Images