Temperature effects test bench

FIELD: test equipment.

SUBSTANCE: test bench comprises the appliances to place the unit under test thereat, source of temperature effects with water feed and drain systems arranged under said unit and vertical screen. The latter is arranged along the edges of said source and secured at the columns and elevated above soil to vary the spacing between soil level and source lower edge. Besides it incorporates the system of protection against satellite observation of tests and unit under test. Said system comprises horizontal screen secured from above at vertical screen columns. Said vertical screen consists of metal frame and refractory metal cables spaced in parallel along the frame lengthwise axis and over width exceeding the object overall dimensions. Said cables are braided in crosswise direction at the screen centre part by nichrome bands completely covering the object outlines.

EFFECT: higher accuracy of tests, protection against observation from space.

3 dwg

 

Known for setting Fire to simulate fire effects on the test object (C. A. Viktorov, M. R. Mole, A. A. Pekhterev, P. M. Tagirov / proceedings of the scientific conference of the Volga regional center raras "Modern methods of designing and testing of missile and artillery armament, Sarov, pages 261-266, ISBN 5-85165-389-2, 2000). The apparatus comprises a housing, providing a homogeneous temperature field around the test object, the stand, which is a test object, the main source of temperature effects, made in the form of a pallet of fuel and sources of temperature effects in the form of a fuel reservoir located at the base of the stand. The unit is designed to simulate fire conditions in accordance with the requirements of the IAEA with the volumetric average temperature of 800°C and measuring the realized temperatures in the inner layers of the test object.

The famous "Setting for the study of the object on temperature effects (see patent RU No. 2193187, IPC 7 G01N 25/24, published 20.11.2002), comprising a housing in which is installed the test object placed on the bed with a support, the main source of temperature effects placed under the test object, and an additional source placed near the test object in the environment of the products of combustion of the foundations of the th source temperature effects. The body is made in the form of a vertical screen located on the perimeter of the main source temperature effects, and elevated above the ground level. This unit is selected as a prototype.

The disadvantages of these plants are: vertical screen, with no possibility of changing the distance above ground level, i.e. the ability to influence the fire; the availability of additional sources of heat treatment, placed near the test object, which leads to uneven heating of the test object, the inability to ensure a uniform distribution of the fuel under test.

The technical problem solved by the claimed invention, is to provide protection from observation from space for the process of testing large objects at high temperature effects and possible changes in the geometry of the test object.

The technical result consists in providing protection when testing against observations from space, ensuring that it is impossible to determine the material and geometric parameters of the test object (s) by changing the geometry OI, its glow in the combustion process.

The technical result is achieved due to the fact that declare a test object for temperature effects, containing prisposoblenie to install the test object, the source temperature effects, established under the test object, the vertical screen located on the perimeter of the source temperature effects, fixed to the columns and raised above ground level, unlike the prototype is equipped with a protection system from the satellite monitoring of the testing process and the test object, including horizontal screen mounted on the top of the columns of the vertical screen consisting of a metal frame frame, discretely mounted thereon parallel to the longitudinal axis of the frame width greater than the dimensions of the object, ropes made of heat-resistant material, bound in the transverse direction in the Central part of the screen nichrome ribbons, closing the contour of the investigated object, the vertical screen is made with the possibility of changing the distance from ground level to its lower edge, and the source temperature effects is further provided with systems of water supply and drainage.

Supply stand protection system from the satellite monitoring of the testing process and the test object, including horizontal screen mounted on the top of the columns of the vertical screen consisting of a metal frame frame, discretely mounted thereon parallel to the longitudinal axis of the frame width in excess of GABA is etnie the size of the object, ropes made of heat-resistant material, bound in the transverse direction in the Central part of the screen nichrome ribbons, completely closing the contour of the investigated object, provides the change in the geometry of the test object, its glow in the combustion process and therefore provides the impossibility of identifying material and geometric parameters of the AOI.

Implementation of vertical screen with the possibility of changing the distance from ground level to its lower edge provides the ability to control blowing at a given mode tests taking into account climatic factors (temperature, wind, rainfall).

Supply stand systems cooling water source temperature effects helps provide uniform combustion temperature along the perimeter of the booth by providing horizontal level and the same height flammable liquid, using a layer of water, which eliminates existing and emerging in the process of testing irregularities of the bottom of the source temperature effects.

The invention is illustrated by figures. In Fig.1 shows a General view of the stand from the side, Fig.2 shows a General view of the stand from the top of Fig.3 shows a protection system from satellite observations.

A test object for temperature effects contains the mounting of the volume of the TA test, made in this example of execution in the form of two supports 1 bed 2, the source temperature effects 3 installed under the test object 4, the vertical screen 5 located on the perimeter of the source temperature effects 3 fixed to the columns 6 and raised above ground level 7.

System protection from the satellite monitoring of the testing process and the test object includes a horizontal screen 8, is fixed on the top of the columns 6 vertical screen 5 consisting of a metal frame frame 9, discretely mounted thereon parallel to the longitudinal axis of the frame 9 width greater than the dimensions of the object 4, the rope 10 of heat-resistant material, bound in the transverse direction in the Central part of the screen 8 nichrome ribbons 11, completely closing the contour of the investigated test object 4.

Vertical screen 5 is arranged to change a distance from ground level 7 to its lower edge, in this example, run through a removable, height-adjustable panels 12 around its perimeter.

The source temperature effects 3 provided with a supply system 13 and the drain 14 of the water.

Declare a test object for temperature effects is as follows.

Support 1 and the cradle 2 are installed and fixed inside the source of temperature effects 3 (in this case - pallet).

On the cradle 2 in the masking cover (Fig. not shown) placed the test object 4.

At a given height from the ground on a vertical screen 5 set the panels 12. Top mounted horizontal screen 8, fastened to the columns 6 vertical screen 5. Remove from the test object 4 masking case.

First, water is supplied, then the combustible fluid in the source temperature effects 3 carried out the ignition.

In the process of testing the horizontal screen 8 fully closes and changes the contours of the test object 4. Different materials horizontal screen 8 and OIS 4 have different luminescence spectra at different temperatures, resulting in discrete fixed ropes 10 of heat-resistant material, bound in the transverse direction in the Central part of the screen nichrome ribbons 11, distort both the geometry and the spectrum of the glow OI 4 when burning, which ensures the impossibility of identifying material and geometric parameters of the AOI.

A test object for temperature effects, contains a device for installation of the test object, the source temperature effects, established under the test object, the vertical screen located on the perimeter of the source temperature effects, fixed to the columns and raised above ground level, from which causesa fact, that is equipped with a protection system from the satellite monitoring of the testing process and the test object, including horizontal screen mounted on the top of the columns of the vertical screen consisting of a metal frame frame, discretely mounted thereon parallel to the longitudinal axis of the frame width greater than the dimensions of the object, ropes made of heat-resistant material, bound in the transverse direction in the Central part of the screen nichrome ribbons, completely closing the contour of the investigated object, in this case the vertical screen is made with the possibility of changing the distance from ground level to its lower edge, and the source temperature effects is further provided with systems of water supply and drainage.



 

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Khakir-33 // 2490582

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13 cl, 8 dwg, 3 ex, 1 tbl

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