Device for tests of elongated shaped charges

FIELD: test equipment, applicable for determination of the optical focal length of elongated shaped charges.

SUBSTANCE: the device has a plate with a chamfer and horizontal platforms, brackets for fastening of the elongated shaped charge positioned on the side of the chamfer. Lateral grooves are made on the plate chamfer between the horizontal plates, depth h of each groove corresponds to the value of the highest wall of the groove and is determined from relation where lk - the length of the generating line of the shaped charge cumulative groove; ρ1.0 - the initial density of facing of the elongated shaped charge; ρ2.0 - the plate density.

EFFECT: enhanced accuracy of measurement by standard tools of the depth of incision of the cumulative jet into the obstacle at a minimum quantity of tests.

2 dwg

 

The invention relates to test equipment and is designed to determine the optimal focal distance oblong shaped charges (UCF). It can be used in missile and space technology, aviation, oil and other sectors of the economy where there are extra long shaped charges.

A device for testing elongated shaped charges, by definition, focal length [1], implemented in the development of nodes of the separation space rocket "Energy"that contains a plate with a bevel and brackets with a fixed elongated shaped charge.

The disadvantage of this device is the measurement error of the focal length ukz at large angles of bevel plate. In the fall of cumulative jet into a barrier at an angle an unwanted partial reflection from obstacles, which leads to the violation of the directional movement of the jet throughout the plate. This undesirable effect is greatly increased when you increase the angle of the slant plate.

A device for testing elongated shaped charges [2], containing a plate with slant and horizontal platforms on it and brackets for fixing the elongated shaped charge placed on the side of the slant plate.

But this device is oblad is no significant drawback: gives the error in the measurement of the depth of incision into the plate cumulative jet ukz. The cumulative thickness of the jet cross-section equal to several microns. To measure the depth of incision into the plate so thin cumulative jet ordinary measuring instruments is almost impossible, or measured with large errors.

Theoretically, the focal length f or the distance between the UCF and share a design element for this kind of charges is determined by the diameter of its cross section d and is approximately equal to f d±0,25d, that is, the spread is about ±25%. The variation of the magnitude of the focal length is determined by the manufacturing technology ukz, its diameter and some other factors. As well as the focal length under all other equal conditions strongly depends on the thickness of the structure, which can cut ukz, the determination of the optimal focal distance f, is a very important task.

The problem solved by the present invention is to improve the accuracy of determining the optimal focal distance for a particular installation, while determining the thickness of the structural element, the separation of which may be specific installation at a specific focal length.

This is achieved by a device for testing elongated shaped charges containing plate with slant and horizontal PLO is alcami on it, brackets for fastening the elongated shaped charge placed by the bevel plate between the horizontal platforms on the bevel plate made of transverse grooves, the depth h of each of which corresponds to the value of the highest wall of the groove, is determined from the relationship:

where lk- the length of the generatrix of cumulative elongated groove shaped charge; ρ1.0- the initial density facing elongated shaped charge; ρ2.0-density plates.

The technical result is to increase the measurement accuracy of conventional instruments plunge depth cumulative jet in the barrier even with a minimum number of tests.

The relation (1) follows from the formula SB [3] to determine the depth broneprobivnoj:

where hPthe penetration depth of the cumulative jet barrier; l0- the length of the jet at the moment of the approach to the obstacle.

To achieve maximum penetration effect you need to choose a value of l0so that during the subsequent process of penetration of the jet into the barrier jet kept continuity. You can write:

For modern shaped shells perfor who owned the jet length l effin the following, depending on the length of the generatrix cumulative grooves lk[3]:

For the most accurate measurement of the resulting test data on the depth of the incision cumulative jet barrier depth of cut grooves h between the horizontal platforms on the bevel plate used as barriers to exceed the maximum depth of penetration of the cumulative jet in the barrier, i.e. it turns out ratio (1). The maximum depth of the groove h is determined from considerations of preserving the integrity of the plate.

General view of the device for testing elongated shaped charges presented on the drawings. Figure 1 is a device for testing the UCF in the initial state; figure 2 - after the test.

Device for testing elongated shaped charges consists of a plate 1 with a horizontal pads 2 made on the bevel plate, the two brackets 3 and 4, which set forth the test ukz 5 detonator 6. Between the horizontal pads 2 made of transverse grooves 7. The plate 1 is located under the UCF 5. Change the thickness of the plate is at an angle αwhich can be chosen arbitrarily, but from experience, we recommend the following ratio:

where d is the diameter of the elongated cumulative the main charge, L is the length of the plate. In addition, the minimum distance fminutesbetween UCF and the plate in the plane of the cut should 0.75 d. All this will reduce the number of tests, as in this case, the same test will be presented to all the focal lengths from 0,75f to 1,25f.

The device operates as follows. Electric current is supplied to the detonator 2, which initiates the UCF 5. Cumulative jet ukz 5 is embedded in the plate 1 along its entire length, leaving it thin slot on the depth, which can penetrate the UCF 5 at this current focal length f. As the length of the plate focal length f is variable, the maximum value of cutting Smaxdetermine the optimal focal distance fofor specific test ukz 5. Due to the fact that the slot from the cumulative jet in the narrow plate 1, to accurately measure its depth is extremely difficult. However, the presence of transverse grooves, the depth of which is greater than the depth of the cutting jet, allows you to perform these measurements with the required accuracy. The width of the transverse grooves, the length of horizontal platforms and their number are determined purely technologically. The shorter the length and number of these steps and grooves, the smaller the device itself. But, at the same time, the more steps, and the greater the width of the grooves, the more accurately we can determine the optimal focal p is sloanie f obecause the more steps, the smaller the differential thickness plate, wider and deeper the groove, therefore, it is more convenient to measure the depth of the incision cumulative jet.

When using this device after the first test easily determine the optimal focal distance fowhile determining the thickness of the plate, i.e. the structural element, the separation of which may be specific installation at a specific focal length. Even one test by known methods it is possible to calculate the reliability of separation of the structural element, for example, of the spacecraft.

Literature

1. Report. Determination of the optimal focal length for elongated detonating charge DUZ 231 to A-01, 1987.

2. USSR author's certificate No. 1779902.

3. Baum F.A., K.P. Stanyukovich, Schechter B. I. Physics of the explosion. M: Fizmatgiz, 1959, s-534.

Device for testing elongated shaped charges containing plate with slant and horizontal platforms and hosted by the bevel bracket for fixing the elongated shaped charge, characterized in that the bevel plate between the horizontal platforms made of transverse grooves, the depth h of each of which corresponds to the value of the highest wall of the groove, is determined from the relationship

where lk- the length of the generatrix of cumulative elongated groove shaped charge;

ρ1.0- the initial density facing elongated shaped charge;

ρ2.0- density plates.



 

Same patents:

FIELD: determination of exterior ballistic parameters (co-ordinates, speed and attitude of projectile components - bullets and projectiles) at a direct laying fire at vertical obstacles (targets).

SUBSTANCE: the device has a light target for determining the speed and co-ordinates of projectile components. Provision is made for measurement of time moments of projectile component entry in the light screens and exit from them, computation of the time moments of intersection of the light screens by the center of the projectile component, the use of these data prevents any error in determination of the speed and co-ordinates due to nutation and precession. The angles of nutation and precession are determined according to the differences of time moments corresponding to the durations of intersection of the light screens with the aid of shadow characteristics predetermined by computation or experimentally.

EFFECT: enhanced precision of determination of the speed, co-ordinates and angles of nutation and precession of the projectile component.

6 dwg

FIELD: determination of exterior ballistic parameters (co-ordinates, velocity and attitude of projectile elements - bullets and shells at a direct fire at vertical obstacles (targets), applicable in experimental determination of the piercing capacity of bullets and shells and the armor quality in the process of their development or check-up at manufacture.

SUBSTANCE: the device has two parallel light screens for determination of the flight velocity and prediction of the nullification time of two pairs of photo rules and readout of information of the first pair of photo rules at the instant of intersection by the center of the projectile element of the light screens of this pair of photo rules and after the outcome of the projectile element from the light screens of the second pair of photo rules from these photo rules. The device provides for measurement of the time moments of entry of the projectile element to the light screens for measurement of the velocity and moments of outcome from them and computation of the time of intersection by the center of the projectile element of the light screens, the use of which at determination of the velocity and co-ordinates of flying-by precludes any errors because of nutation and precession. The co-ordinates of flying-by of the projectile element are determined with the aid of the protractor - base method according to the co-ordinates of the centers of shadows on the second pair of photo rules. The signs of the slopes are determined according the coincides of the co-ordinates of the shadow boundaries on the first and second pairs of the photo rules; the slopes of the axis of the projectile element and the angles of precession and nutation are determined according to the width of the full shadows on the second photo rules, signs of slope, co-ordinates of flying-be with the aid of shadow characteristics (dependences of the width of shadows on the slopes).

EFFECT: simultaneous automatic determination with a high precision of the exterior ballistic parameters of the projectile element: velocity, co-ordinates of flying-by and angles of nutation and precession.

7 dwg

Manometric vessel // 2276322

FIELD: tests of powders and explosives.

SUBSTANCE: the device includes a two-layer metal body, steel obturating rings, device for measurement of pressure in the combustion chamber made in the form of a cover with a measuring cylinder, having at least two strain-measuring devices, bushes made of material with a high thermal diffusivity are installed at the inlet to the gas discharge duct in the ignition spacer and at the inlet to the pressure measuring device on the side of the combustion chamber, and the cavities behind the obturating rings are connected with the atmosphere through the discharge ducts.

EFFECT: enhanced service life of the manometric vessel.

1 dwg

FIELD: devices for determination of impact sensitivity characteristics of explosives.

SUBSTANCE: the device has an anvil installed on a foundation and a load with vertical guides, the anvil is connected to the foundation by obliquely positioned plate springs.

EFFECT: enhanced accuracy of determination of sensitivity of explosives to a slanting impact, and, as a result, enhanced safety of handling of explosives.

2 cl, 1 dwg

FIELD: testing engineering.

SUBSTANCE: bench comprises flexible longitudinal guide tightened between the supports, carriage, which is mounted on the guide by means of moving members and is used for securing the article to be tested, and control system. The bench has at least one additional flexible longitudinal guide, which is set at an angle to the first one. The guides diverge in the direction of movement of the carriage. The flexible longitudinal guides are made of steel ropes, are arranged symmetrically with respect to the longitudinal axis of the carriage, and are housed by the moving members connected through the carriage body. The surface of the moving members, which are in contact with the guides, are provided with entering chamferings and rounds.

EFFECT: expanded functional capabilities.

3 dwg

The invention relates to the field of testing explosives by shock-wave compression

The invention relates to defense systems and, in particular, to integrated control means guided missiles

The invention relates to the defense industry, and in particular to devices for testing the performance and durability loaded with shot of parts and components of shells, mines, grenades, launchers (trunks, jet engines, fuses, etc.,)

The invention relates to military technology, and specifically to methods of tests of mortar rounds and their nodes and elements

The invention relates to the testing of objects containing electroexplosive devices on the effects of electromagnetic fields

FIELD: testing engineering.

SUBSTANCE: bench comprises flexible longitudinal guide tightened between the supports, carriage, which is mounted on the guide by means of moving members and is used for securing the article to be tested, and control system. The bench has at least one additional flexible longitudinal guide, which is set at an angle to the first one. The guides diverge in the direction of movement of the carriage. The flexible longitudinal guides are made of steel ropes, are arranged symmetrically with respect to the longitudinal axis of the carriage, and are housed by the moving members connected through the carriage body. The surface of the moving members, which are in contact with the guides, are provided with entering chamferings and rounds.

EFFECT: expanded functional capabilities.

3 dwg

FIELD: devices for determination of impact sensitivity characteristics of explosives.

SUBSTANCE: the device has an anvil installed on a foundation and a load with vertical guides, the anvil is connected to the foundation by obliquely positioned plate springs.

EFFECT: enhanced accuracy of determination of sensitivity of explosives to a slanting impact, and, as a result, enhanced safety of handling of explosives.

2 cl, 1 dwg

Manometric vessel // 2276322

FIELD: tests of powders and explosives.

SUBSTANCE: the device includes a two-layer metal body, steel obturating rings, device for measurement of pressure in the combustion chamber made in the form of a cover with a measuring cylinder, having at least two strain-measuring devices, bushes made of material with a high thermal diffusivity are installed at the inlet to the gas discharge duct in the ignition spacer and at the inlet to the pressure measuring device on the side of the combustion chamber, and the cavities behind the obturating rings are connected with the atmosphere through the discharge ducts.

EFFECT: enhanced service life of the manometric vessel.

1 dwg

FIELD: determination of exterior ballistic parameters (co-ordinates, velocity and attitude of projectile elements - bullets and shells at a direct fire at vertical obstacles (targets), applicable in experimental determination of the piercing capacity of bullets and shells and the armor quality in the process of their development or check-up at manufacture.

SUBSTANCE: the device has two parallel light screens for determination of the flight velocity and prediction of the nullification time of two pairs of photo rules and readout of information of the first pair of photo rules at the instant of intersection by the center of the projectile element of the light screens of this pair of photo rules and after the outcome of the projectile element from the light screens of the second pair of photo rules from these photo rules. The device provides for measurement of the time moments of entry of the projectile element to the light screens for measurement of the velocity and moments of outcome from them and computation of the time of intersection by the center of the projectile element of the light screens, the use of which at determination of the velocity and co-ordinates of flying-by precludes any errors because of nutation and precession. The co-ordinates of flying-by of the projectile element are determined with the aid of the protractor - base method according to the co-ordinates of the centers of shadows on the second pair of photo rules. The signs of the slopes are determined according the coincides of the co-ordinates of the shadow boundaries on the first and second pairs of the photo rules; the slopes of the axis of the projectile element and the angles of precession and nutation are determined according to the width of the full shadows on the second photo rules, signs of slope, co-ordinates of flying-be with the aid of shadow characteristics (dependences of the width of shadows on the slopes).

EFFECT: simultaneous automatic determination with a high precision of the exterior ballistic parameters of the projectile element: velocity, co-ordinates of flying-by and angles of nutation and precession.

7 dwg

FIELD: determination of exterior ballistic parameters (co-ordinates, speed and attitude of projectile components - bullets and projectiles) at a direct laying fire at vertical obstacles (targets).

SUBSTANCE: the device has a light target for determining the speed and co-ordinates of projectile components. Provision is made for measurement of time moments of projectile component entry in the light screens and exit from them, computation of the time moments of intersection of the light screens by the center of the projectile component, the use of these data prevents any error in determination of the speed and co-ordinates due to nutation and precession. The angles of nutation and precession are determined according to the differences of time moments corresponding to the durations of intersection of the light screens with the aid of shadow characteristics predetermined by computation or experimentally.

EFFECT: enhanced precision of determination of the speed, co-ordinates and angles of nutation and precession of the projectile component.

6 dwg

FIELD: test equipment, applicable for determination of the optical focal length of elongated shaped charges.

SUBSTANCE: the device has a plate with a chamfer and horizontal platforms, brackets for fastening of the elongated shaped charge positioned on the side of the chamfer. Lateral grooves are made on the plate chamfer between the horizontal plates, depth h of each groove corresponds to the value of the highest wall of the groove and is determined from relation where lk - the length of the generating line of the shaped charge cumulative groove; ρ1.0 - the initial density of facing of the elongated shaped charge; ρ2.0 - the plate density.

EFFECT: enhanced accuracy of measurement by standard tools of the depth of incision of the cumulative jet into the obstacle at a minimum quantity of tests.

2 dwg

FIELD: military equipment, in particular, experimental devices for development of the separation process of jet projectiles.

SUBSTANCE: the device has a mock-up of the nose cone with the separation compartment and a mock-up of the rocket section which are positioned on a tray-type rigid base. The base is made in the form of inner and outer channel-type support guides symmetrically fastened to one another by the bases and engageable by side shelves with the surfaces of the mock-ups of the nose cone and rocket section of the projectile in the vertical and horizontal directions. The device is provided with brake blocks positioned on the base before the mock-ups of the separating parts at distances corresponding to the acceleration paths of the separating parts in the trajectory. The brake blocks are made in the form of cylinders, whose end face surfaces are provided with axisymmetric inner and outer cone-shaped fixing surfaces. The mass of the brake blocks is selected from the condition of provision of axial g-loads not exceeding the allowable values, and the quantity of the brake blocks is selected from a definite relation.

EFFECT: reduced labor content of the process of separation of jet projectiles.

3 dwg

FIELD: methods of testing catapult units for launching rockets.

SUBSTANCE: proposed method consists in placing the weight and overall dimension mock-up of rocket on horizontal guides of jig secured on test stand platform and piston-type catapult unit with solid propellant gas generator placed between and under jig guides. Acceleration of said mock-up is performed by means of catch brought in contact with its rear bottom and rigidly connected with moving piston of catapult unit. Jettisoning of rocket mock-up is carried out directly from horizontal guides of jig. Provision is made for barrier (made from sand, for example) beyond boundaries of jig for catching the rocket mock-up of length "l" which is out of gauge; barrier is made at distance ≤l from point of mock-up takeoff from horizontal guides of jig. Barrier length L= (3-4)l at height of H≥2h, where h is height of mounting of mock-up by its axis on jig horizontal guides. Wooden shield or timber bulkheads are mounted in barrier at distance of (0.5-0.9)L in way of motion of mock-up; barrier is bounded transversely by rigid side walls. Jig, rocket mock-up and piston-type catapult unit are provided with sensors for recording takeoff speed of mock-up, axial load factor of mock-up and pressure of combustion products of solid propellant gas generator in under-piston space of catapult unit.

EFFECT: enhanced informative capacity of stand tests of catapult units; reduction of testing time.

3 cl, 1 dwg

FIELD: defense equipment, in particular, complex means of monitoring of guided missile parameters, for example, missiles teleoriented in a beam.

SUBSTANCE: the method consists in simultaneous synchronous supply of simulating control signals to the command formation unit and comparison of the current values of the control commands from the outputs of the guided missile equipment and command formation unit respectively in heading and pitch. If the values of the control commands at the output of the command formation unit equal to the preset ones, and differ from the respective values at the output of the guided missile equipment by the value not exceeding the tolerance value, a decision on the equipment serviceability is taken. Introduction into the automatic check-out system of series-connected command formation unit and comparison unit has enhanced the accuracy of monitoring of the parameters.

EFFECT: enhanced accuracy of monitoring of the parameters due to the exclusion of the influence of the accuracy of decoding of the relay signal and accuracy of formation of simulating control signals.

3 cl, 3 dwg, 1 ex

FIELD: automatic control systems, applicable in equipment specimens as complex monitoring means, as well as in installations for scientific research work.

SUBSTANCE: simulating instruction in the form of modulated radiation are assigned, the radiation is applied to the input of the missile reception line, and the parameters of the guided missile are estimated by comparison of the signal from the output of the missile control equipment with the preset one. Computation of the three-dimensional motion of the missile is accomplished according to the signals from the output of the missile control equipment, its deviation relative to the aiming point, the modulated radiation is formed in compliance with the obtained deviations of the missile. The monitored parameters are compared with the preset values according to the computed signals of the missile spatial position by comparison of the deviations and the angle of attack and the skip angle or of the missile deviation only with the preset values. The automated system of monitoring of guided missile parameters consists of to series-connected modulated radiation formation unit and the missile control equipment, a computer unit is used, its input is connected to the output of the control equipment, and the output is connected to the input of the modulated radiation formation unit. In the modification of realization of the modulated radiation formation unit it has a series-connected instrument-guidance sight and a controlled mirrors unit optically communicated with the missile control equipment, the second input of the controlled mirrors unit is connected to the outputs of the output of the computer unit.

EFFECT: enhanced truth of the missile parameters monitoring in the conditions of operation of the whole control system, in the presence of disturbing actions and jamming inclusive.

3 cl, 2 dwg

Up!