CN114739242B - Submillimeter-level heavy metal particle group front edge speed testing system and method - Google Patents
Submillimeter-level heavy metal particle group front edge speed testing system and method Download PDFInfo
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- CN114739242B CN114739242B CN202210320026.9A CN202210320026A CN114739242B CN 114739242 B CN114739242 B CN 114739242B CN 202210320026 A CN202210320026 A CN 202210320026A CN 114739242 B CN114739242 B CN 114739242B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
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Abstract
The invention relates to a submillimeter-level heavy metal particle group front edge speed testing system and a submillimeter-level heavy metal particle group front edge speed testing method, which comprise a low-incidental damage warhead model connected with a trigger device; the device for testing the front edge speed of the submillimeter-sized heavy metal particle group is also comprises a submillimeter-sized heavy metal particle group front edge speed testing device, and the submillimeter-sized heavy metal particle group front edge speed testing device is sequentially connected with a timer, an oscilloscope and a data processing system; the low-incidental-damage warhead model comprises a heavy metal particle embedded layer, wherein high-energy explosives are arranged in the heavy metal particle embedded layer, and an explosion transfer sequence is fixed on the high-energy explosives and is connected with a trigger device. The invention has simple structure and strong operability, is suitable for complex environment and has low cost; by utilizing the on-off target speed measurement principle, the sub-millimeter level heavy metal particle group front edge speed is accurately obtained, reliable test data is provided for representing the damage effect of low-attached damage ammunition, and a new idea is provided for small-size fragment group speed test.
Description
Technical Field
The invention relates to a system and a method for testing the front edge speed of a submillimeter-sized heavy metal particle group, in particular to a method for testing the front edge speed of the submillimeter-sized heavy metal particle group driven by an explosive, and belongs to the technical field of high-speed dynamic process testing.
Background
In modern urban combat and near-air fire support, the damage range and degree are effectively controlled while the target is correctly hit to obtain the maximum killing effect, and the subsidiary damage effect is reduced to the maximum extent to become the combat requirement in certain specific combat environments.
The shell of the low-attached-damage ammunition adopts a carbon fiber composite material to replace a traditional metal material, submillimeter-level heavy metal particles with certain mass are filled between the central high-energy explosive and the shell, and the characteristic of fast attenuation of the group velocity of the heavy metal particles is mainly utilized to realize controllable killing of targets in a damage area. Therefore, the front velocity of the heavy metal particle group at different positions has an important influence on the research on the scattering characteristic and the terminal damage effect evaluation of the heavy metal particles.
Many researches have been carried out at home and abroad aiming at the traditional large-size fragment speed measuring method, but documents and patent reports aiming at the submillimeter-level fragment speed measuring device and method are few. At present, there are three commonly used methods for fragment speed measurement: the target net method, the flash X-ray photography method and the high-speed photography method, but the speed measurement aiming at the sub-millimeter heavy metal particle group has the following defects:
(1) The target net method is mainly characterized in that the speed of fragments is obtained by recording time signals when the fragments break through the target net at different positions, the method is complex to manufacture and is suitable for fragments with larger size, and heavy metal particles are submillimeter-sized spherical fragments and cannot break through the target net so that the speed of the heavy metal particles cannot be obtained.
(2) Although the motion tracks of the fragments at different moments can be recorded by the flash X-ray photography method, and the fragment speed is obtained through the interval distance and the time difference of each image, the heavy metal particle scattering process is difficult to capture and distinguish due to the small size of the heavy metal particles and the shadow generated by the broken fragments of the carbon fiber shell, so that the flash X-ray photography method cannot be applied to speed testing of the heavy metal particles, and meanwhile, the flash X-ray photography system is complex in operation, high in use cost, high in use requirement on use environment and not suitable for an outdoor target range.
(3) The high-speed camera shooting method is suitable for measuring large-size fragments without barriers and with predictable tracks, and is difficult to capture and distinguish submillimeter-level heavy metal particle groups, so that the method cannot be suitable for speed testing of the fragments.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a submillimeter-scale heavy metal particle group front edge speed testing system and a submillimeter-scale heavy metal particle group front edge speed testing method. The method can avoid the problem that the heavy metal particles are small in size and cannot be captured, can truly and accurately measure the front edge speed of the heavy metal particle group at different positions, and provides more reliable test data for researching the flying characteristic of the low-incidental damage ammunition damage element and evaluating the terminal damage effect.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the submillimeter-level heavy metal particle group front edge speed test system comprises a low-incidental damage warhead model connected with a trigger device; the device also comprises a submillimeter-level heavy metal particle group front edge speed testing device, wherein the submillimeter-level heavy metal particle group front edge speed testing device is sequentially connected with a timer, an oscilloscope and a data processing system;
the low-attached damage warhead model comprises a heavy metal particle embedded layer, wherein high-energy explosive is arranged in the heavy metal particle embedded layer, and a booster sequence is fixed on the high-energy explosive and is connected with a trigger device.
Submillimeter level heavy metal particle crowd forward position speed testing arrangement include: the bottom of the central rod is provided with a base;
the central rod is provided with two rectangular supporting plates which are parallel to each other; an insulating layer thin plate is sleeved outside the supporting plate, and an aluminum foil tin paper I, a polyethylene film and an aluminum foil tin paper II are sequentially stuck on the insulating layer thin plate;
the shielding mesh wire of the trigger wire is connected with the aluminum foil tinfoil II, and the signal wire of the trigger wire is connected with the aluminum foil tinfoil to form an on-off target;
the other end of the trigger line is connected with a timer.
The data acquisition is mainly completed by combining a timer, an oscilloscope and a data processing system, wherein the timer adopts us-level time unit equipment and can accurately capture a trigger on-off signal; the oscilloscope adopts a digital storage oscilloscope with high-efficiency digit and very fast waveform capture rate to record the waveform of the trigger signal; the data processing system obtains the sub-millimeter level heavy metal particle front edge speed by processing and calculating the waveform data obtained by the test, and the test result is reliable in the characterization and evaluation of the damage effect of the low collateral damage ammunition.
A submillimeter-level heavy metal particle group front edge speed testing method comprises the following steps:
the method comprises the following steps: designing parameters of a low incidental damage warhead model according to a test scheme;
step two: fixing a submillimeter-level heavy metal particle front edge speed testing device at an appointed position and at the same height as the center of explosion, correspondingly connecting a trigger line with a timer, a timer and an oscilloscope, and setting the oscilloscope to return to a zero state;
step three: using trigger device to bring low-level damage warheadInitiating a model, accelerating a heavy metal particle group to the maximum speed under the action of detonation drive, starting flying to a test target, starting timing by a timer and generating a pulse take-off signal on an oscilloscope when the heavy metal particle group impacts an aluminum foil tinfoil I to conduct with the aluminum foil tinfoil II, and recording as a first time T 1 (ii) a In the same way, when the heavy metal particle group is at the position of the second speed measuring device, a second pulse take-off signal is generated and recorded as a second moment T 2 ；
Step four: processing the test data through a data processing system to obtain the flying time interval delta T of the heavy metal particles, and measuring the flying distance delta L of the heavy metal particles;
step five: and finally, calculating the front edge speed of the heavy metal particles at a certain position according to a speed testing principle.
Compared with the prior art, the invention brings technical advantages in the following aspects:
(1) The device has simple structure and strong operability, is suitable for complex environment and has low cost;
(2) By utilizing the on-off target speed measurement principle, the front edge speed of the submillimeter-level heavy metal particle group is accurately obtained.
(3) The problem that the sub-millimeter-scale fragment group cannot obtain the fragment speed due to small size, light weight and difficulty in capture is solved, reliable test data are provided for representing the damage effect of low-attached damage ammunition, and a new idea is provided for testing the speed of the small-size fragment group.
Drawings
Fig. 1 is a schematic structural diagram of a static explosion power field test system of a low incidental damage warhead model.
FIG. 2 is a schematic structural diagram of a device for measuring the front edge velocity of a submillimeter-sized heavy metal particle group.
FIG. 3 is a cross-sectional view of the structure of the device for measuring the front edge velocity of a submillimeter-sized heavy metal particle group (full section along the center line of a supporting plate)
FIG. 4 is a schematic view of the device for measuring the action rate of the heavy metal particle group.
Fig. 5 is a voltage-time curve of the turn-off signal when the submillimeter-sized heavy metal particle group strikes the velocity measurement device.
The reference numerals in the drawings denote: 1. the device comprises a low-incidental-damage warhead model, 11, an explosion propagation sequence, 12, a heavy metal particle embedded layer, 13, high-explosive, 2, a submillimeter-level heavy metal particle group front edge speed testing device, 2-1, a fixing rod, 2-2, a supporting plate, 2-3, a trigger line, 2-4, a polyethylene film, 2-5, a first aluminum foil and tin foil, 2-6, a second aluminum foil and tin foil, 2-7, an insulating layer thin plate, 2-8, a fixing bolt, 2-9, a supporting rod, 2-10, a self-tapping screw, 2-11, a base, 3, a timer, 4, an oscilloscope, 5, a data processing system, 6 and an initiation device.
Detailed Description
The invention is further described with reference to the following drawings and specific embodiments.
As shown in fig. 1, the present embodiment provides a system for measuring the front velocity of a sub-millimeter heavy metal particle group, which includes a low incidental damage warhead model 1 connected to a triggering device 6; the device for testing the front edge speed of the submillimeter-sized heavy metal particle group further comprises a submillimeter-sized heavy metal particle group front edge speed testing device 2, wherein the submillimeter-sized heavy metal particle group front edge speed testing device 2 is sequentially connected with a timer 3, an oscilloscope 4 and a data processing system 5;
the low-incidental-damage warhead model 1 comprises a heavy metal particle embedded layer 12, a high-explosive 13 is arranged in the heavy metal particle embedded layer 12, a booster sequence 11 is fixed on the high-explosive 13, and the booster sequence 11 is connected with a trigger device 6; the high-energy explosive 13 is mainly used for driving the heavy metal particle embedded layer 12 and loading the heavy metal particle embedded layer to the maximum speed; the heavy metal particle embedded layer 12 is in a ring shape formed by pressing submillimeter spherical tungsten carbide, a binder, a combustion improver and the like, and is embedded and sleeved around the high-energy explosive 13; the booster train 11 is mainly used for transferring explosion energy to finally detonate a low-incidental-damage warhead model and is fixed on the upper surface of the high-explosive 13. The triggering device 6 is a low collateral damage warhead model 1 for reliable detonation after test site deployment is complete.
As shown in fig. 2, the device 2 for testing the front velocity of the submillimeter-sized heavy metal particle group includes: a central rod consisting of a fixed rod 2-1 and a support rod 2-9, wherein the bottom of the central rod is provided with a base 2-11;
as shown in fig. 3, two rectangular support plates 2-2 which are parallel to each other are arranged on the central rod; an insulating layer thin plate 2-7 is sleeved outside the supporting plate 2-2, and an aluminum foil tinfoil I2-5, a polyethylene film 2-4 and an aluminum foil tinfoil II 2-6 are sequentially stuck on the insulating layer thin plate 2-7;
the shielding mesh wire of the trigger wire 2-3 is connected with the aluminum foil tinfoil II 2-6, and the signal wire of the trigger wire 2-3 is connected with the aluminum foil tinfoil I2-5 to form an on-off target;
the other end of the trigger line 2-3 is connected to a timer 3.
In order to realize that the speed measuring device is detachable and adjustable in height, the fixing rod 2-1 and the supporting rod 2-9 are assembled by steel pipes in transition fit, a central straight notch with a certain length is machined in a joint fit position and fixed by the fixing bolt 2-8, the supporting rod 2-9 is in threaded connection with the base 2-11, and meanwhile, in order to prevent the speed measuring device from moving under the action of shock waves, four threaded holes are designed in the base along the direction of a circular ring and fixed with the ground by self-tapping screws 2-10.
The data acquisition is mainly completed by the combination of a timer 3, an oscilloscope 4 and a data processing system 5, and the timer 3 adopts us-level time unit equipment and can accurately capture trigger on-off signals; the oscilloscope 4 adopts a digital storage oscilloscope with high-efficiency digit and very fast waveform capture rate to record the waveform of the trigger signal; the data processing system 5 obtains the sub-millimeter level heavy metal particle front edge speed by processing and calculating the waveform data obtained by the test, and the test result is reliable in the damage effect characterization and evaluation of the low collateral damage ammunition.
A method for testing the front edge speed of a submillimeter-level heavy metal particle group comprises the following steps:
the method comprises the following steps: designing model parameters of a low-attached damage warhead model 1 according to a test scheme;
step two: fixing a submillimeter-level heavy metal particle group front edge speed testing device 2 at an appointed position and at the same height as the center of explosion, sequentially connecting a trigger line 2-3 with a timer 3 and an oscilloscope 4, and setting the oscilloscope 4 to return to a zero state;
step three: the method comprises the following steps that a trigger device 6 is utilized to detonate a low-attached damage warhead model 1, heavy metal particle groups are accelerated to the maximum speed under the action of detonation driving and start to fly to a test target, when the heavy metal particle groups impact an aluminum foil tin paper I2-5 to be conducted with an aluminum foil tin paper II 2-6, as shown in a diagram 4, a timer 3 starts to time and generates a pulse tripping signal on an oscilloscope 4, and the pulse tripping signal is marked as a first time T1 at the moment when the heavy metal particle groups act on a speed test device; similarly, when the heavy metal particle group is at the position of the second speed measuring device, a second pulse take-off signal is generated, which is recorded as a second time T2, and as shown in fig. 5, when the submillimeter-sized heavy metal particle group passes through the submillimeter-sized heavy metal particle group front edge speed measuring device 2, a voltage-time curve graph of the off-off signal is displayed on the oscilloscope 4;
step four: processing the test data by the data processing system 5 to obtain the time interval delta T = T of the heavy metal particle flight 1 -T 2 =219.2us, the flying distance of the heavy metal particles was measured as Δ L =300mm;
step five: and finally, calculating the speed of the heavy metal particles at a certain position according to a speed test principle: v = Δ L/Δ T =300mm/219.2us =1368.6m/s.
The invention provides a sub-millimeter and heavy metal particle group front edge speed testing system and method, the device solves the difficulty of small-size and small-mass particle group speed testing, and has the advantages of strong structural operability, simple and clear method, clear principle, simple operation and strong applicability.
Claims (2)
1. The system for testing the front edge speed of the submillimeter-level heavy metal particle group is characterized by comprising a low-incidental-damage warhead model (1) connected with a trigger device (6); the device is characterized by also comprising a submillimeter-level heavy metal particle group front edge speed testing device (2), wherein the submillimeter-level heavy metal particle group front edge speed testing device (2) is sequentially connected with a timer (3), an oscilloscope (4) and a data processing system (5);
the low-incidental-damage warhead model (1) comprises a heavy metal particle embedded layer (12), wherein high-energy explosives (13) are arranged in the heavy metal particle embedded layer (12), a booster sequence (11) is fixed on the high-energy explosives (13), and the booster sequence (11) is connected with a trigger device (6);
submillimeter-level heavy metal particle crowd leading edge speed testing arrangement (2) include: a central rod consisting of a fixed rod (2-1) and a supporting rod (2-9), wherein the bottom of the central rod is provided with a base (2-11);
the central rod is provided with two rectangular supporting plates (2-2) which are parallel to each other; an insulating layer thin plate (2-7) is sleeved outside the supporting plate (2-2), and a first aluminum foil tinfoil (2-5), a polyethylene film (2-4) and a second aluminum foil tinfoil (2-6) are sequentially adhered to the insulating layer thin plate (2-7);
the shielding mesh wire of the trigger wire (2-3) is connected with the second aluminum foil tinfoil (2-6), and the signal wire of the trigger wire (2-3) is connected with the first aluminum foil tinfoil (2-5) to form an on-off target;
the other end of the trigger line (2-3) is connected with a timer (3).
2. A submillimeter-level heavy metal particle group front edge speed testing method is characterized in that the submillimeter-level heavy metal particle group front edge speed testing system of claim 1 is adopted, and the method comprises the following steps:
the method comprises the following steps: designing model parameters of a low incidental damage warhead model (1) according to a test scheme;
step two: fixing a submillimeter-level heavy metal particle group front edge speed testing device (2) at an appointed position and at the same height as a blasting center, sequentially connecting a trigger line (2-3) with a timer (3) and an oscilloscope (4), and setting the oscilloscope (4) to return to a zero state;
step three: detonating the low-attached-damage warhead model (1) by using the trigger device (6), accelerating heavy metal particle groups to the maximum speed under the action of detonation drive and starting to fly towards a test target, when the heavy metal particle groups impact the first aluminum foil tinfoil (2-5) to conduct the first aluminum foil tinfoil (2-6) with the second aluminum foil tinfoil, starting timing by using the timer (3) and generating a pulse take-off signal on the oscilloscope (4), and marking as a first time T1; similarly, when the heavy metal particle group is at the position of the second speed measuring device, a second pulse take-off signal is generated, and the second pulse take-off signal is recorded as a second moment T2;
step four: processing the test data by a data processing system (5) to obtain the flying time interval of the heavy metal particles, and measuring the flying distance of the heavy metal particles;
step five: and finally, calculating the speed of the heavy metal particles at a certain position according to a speed test principle.
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| US7971535B1 (en) * | 2008-05-19 | 2011-07-05 | Raytheon Company | High-lethality low collateral damage fragmentation warhead |
| CN104034859B (en) * | 2014-04-23 | 2016-01-13 | 西安近代化学研究所 | Explosive charge drives the measurement mechanism of metal ability |
| CN105203797B (en) * | 2015-11-12 | 2018-11-02 | 哈尔滨工业大学 | A kind of micro-and nano-particles group velocity-measuring system |
| CN106199053B (en) * | 2016-04-18 | 2018-12-11 | 北京理工大学 | A kind of light-gas gun grade projectile-velotity detecting system |
| CN212340076U (en) * | 2020-04-08 | 2021-01-12 | 中国人民解放军96901部队24分队 | Array target on-off device |
| CN212340075U (en) * | 2020-04-08 | 2021-01-12 | 中国人民解放军96901部队24分队 | Array speed measuring target test data storage device |
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