CN108680058B - Multilayer multi-wing type reconnection electromagnetic emission device - Google Patents
Multilayer multi-wing type reconnection electromagnetic emission device Download PDFInfo
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- CN108680058B CN108680058B CN201810788469.4A CN201810788469A CN108680058B CN 108680058 B CN108680058 B CN 108680058B CN 201810788469 A CN201810788469 A CN 201810788469A CN 108680058 B CN108680058 B CN 108680058B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B6/00—Electromagnetic launchers ; Plasma-actuated launchers
- F41B6/003—Electromagnetic launchers ; Plasma-actuated launchers using at least one driving coil for accelerating the projectile, e.g. an annular coil
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Abstract
The utility model provides a multilayer many wings formula heavily connects formula electromagnetic emission device, comprises two-layer eight wings or three-layer twelve wings formula, the former structure is: two fins are uniformly and fixedly connected on each of the upper part, the lower part, the left part and the right part of the cylinder body or the square cylinder body to form a projectile armature, 1 driving coil is respectively arranged between the two fins of each side and outside the two fins, and the distances between 3 driving coils and the adjacent fins in each side are the same; the latter structure is: the upper part, the lower part, the left part and the right part of the square cylinder body are uniformly and fixedly connected with three fins to form a projectile armature, 1 driving coil is respectively arranged between the three fins of each part and outside the other inner fin except the middle fin, and the distances between 4 driving coils in each part and the side surfaces of the adjacent fins are the same.
Description
Technical Field
The invention belongs to the technical field of electromagnetic propulsion, and relates to a multilayer multi-wing reconnection type electromagnetic transmitting device.
Background
The reconnection type electromagnetic emission mode is firstly proposed by Coen and the like, and a later-stage Sandinia national laboratory and a United states army ballistic laboratory respectively carry out a plurality of multistage medium-low speed experimental propulsion researches for the field of kinetic energy weapons and cake coil design researches for a single-stage small-sized propeller in the field of antitank armor. The working principle is that the projectile body is pushed to move by utilizing the straightening trend of the intercepted magnetic force lines at the rear edge of the projectile body after recombination, and the projectile body induces vortex in a changed magnetic field and interacts with the magnetic field to generate electromagnetic thrust, so that the projectile body is pushed to move.
The projectile body emitted by the reconnection type electromagnetic emission device is generally plate-shaped or columnar, and has the defect of low magnetic field utilization due to the shape and structure of the projectile body.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a multilayer multi-wing reconnection type electromagnetic transmitting device with high magnetic field utilization rate and better propulsion efficiency.
The purpose of the invention is realized in the following way: the multi-layer multi-wing reconnection type electromagnetic emission device comprises a driving coil and a projectile armature, and is characterized in that the electromagnetic emission device is two-layer eight-wing type or three-layer twelve-wing type; the two-layer eight-wing structure is as follows: the projectile armature shape is formed by uniformly and fixedly connecting two fins on the upper, lower, left and right sides respectively on a cylinder body or a square cylinder body, the driving coils are formed by 12 coils with the same number of turns, 1 driving coil is respectively arranged between each two fins on the upper, lower, left and right sides and the outer sides of the two fins, and the distances between the 3 driving coils and the side surfaces of the adjacent fins are the same;
the three-layer twelve-wing structure is as follows: the projectile armature shape is formed by uniformly and fixedly connecting three fins on the upper, lower, left and right sides on a square cylinder body respectively, the driving coil consists of 16 coils with the same number of turns, 1 driving coil is respectively arranged between the three fins on the upper, lower, left and right sides and the outer sides of the other two fins except the middle fin among the three fins, and the distances between the 4 driving coils and the side surfaces of the adjacent fins are the same.
The distance between the driving coil and the adjacent wing panel is 1 mm-2 mm.
The material of the projectile armature is non-magnetic aluminum good conductor.
Also has an external circuit, which is: the pulse power supply anode is sequentially connected with the charging switch K1, the discharging switch K2, the inductor L and the resistor R in series and then connected with the pulse power supply cathode, the pulse power supply cathode is grounded, the energy storage capacitor C is connected between the junction point of the charging switch K1 and the discharging switch K2 and the ground, and the flywheel diode D cathode is connected between the junction point of the discharging switch K2 and the inductor L and the ground.
The driving coils of each of the upper, lower, left and right directions of the two-layer eight-wing type driving coil and the three-layer twelve-wing type driving coil are discharged by a group of pulse capacitors, namely energy storage capacitors C, and the current flow directions of all the driving coils are the same.
Compared with the prior art, the device has the following characteristics and advantages:
1. the device has the advantages of no contact, no ablation, small ohmic loss, large axial acceleration force, capability of carrying a large-mass projectile, high propulsion efficiency and the like.
2. The device has higher propulsion efficiency and more excellent emission performance.
The device is an improved device based on a multi-wing reconnection type electromagnetic emission model, and mainly comprises a driving coil, a projectile, a power supply and a conversion device. Unlike conventional multi-wing reconnection type electromagnetic emission devices, each side of the projectile has a plurality of tails side by side, and a pair of driving coils is shared between each adjacent tail except for the tails at both ends. Each side of the device discharges a group of pulse capacitors to the driving coil, the current flow direction of the driving coil is identical, the side wings of the projectile induce eddy current in a changed magnetic field to interact with the magnetic field induced by the driving coil to generate electromagnetic thrust to push the projectile to move, and simulation analysis proves that the magnetic field utilization rate of the multi-layer multi-wing reconnection type electromagnetic transmitting device is higher, the transmitting efficiency is better, and the capturing effect is smaller
The device provided by the invention has higher propulsion efficiency, is more beneficial to the reconnection work of magnetic force lines, and has potential practical value in the field of rocket propulsion aviation.
Drawings
FIG. 1 is a variation of a plate-type reconnection electromagnetic transmitting device;
FIG. 2 is a side view of a four-winged reclosing electromagnetic emission device;
FIG. 3 is a side view of a two-layer eight-wing reclosing electromagnetic launch;
FIG. 4 is a top view of a two-layer eight-wing reclosing electromagnetic emission device;
FIG. 5 is a projectile structure of a two-layer eight-wing reclosing electromagnetic launch;
FIG. 6 is a two-layer eight-wing reclosing electromagnetic transmitting device external circuit;
FIG. 7 is a side view of a three-layer twelve-wing reclosing electromagnetic launch;
FIG. 8 is a simulated velocity profile of an embodiment.
Detailed Description
The invention will be further described with reference to the drawings and the detailed description.
Referring to fig. 3, 4, 5 and 7, a multi-layer multi-wing reconnection type electromagnetic emission device is provided, wherein the electromagnetic emission device is a two-layer eight-wing type electromagnetic emission device or a three-layer twelve-wing type electromagnetic emission device; the two-layer eight-wing structure is as follows: the shape of the projectile armature 2 is formed by uniformly and fixedly connecting two fins on each of the upper side, the lower side, the left side and the right side on a cylinder body or a square cylinder body, the driving coil 1 consists of 12 coils with the same number of turns, 1 driving coil 1 is respectively arranged between each two fins on the upper side, the lower side, the left side and the right side and the outer sides of the two fins, and the distances between the 3 driving coils and the side surfaces of the adjacent fins are the same;
the three-layer twelve-wing structure is as follows: the projectile armature shape is formed by uniformly and fixedly connecting three fins on the upper, lower, left and right sides on a square cylinder body respectively, the driving coil consists of 16 coils with the same number of turns, 1 driving coil is respectively arranged between the three fins on the upper, lower, left and right sides and the outer sides of the other two fins except the middle fin among the three fins, and the distances between the 4 driving coils and the side surfaces of the adjacent fins are the same.
Referring to fig. 7, the center hole of the square cylinder of the projectile armature is a circular hole, but may be a square hole. The distance between the driving coil and the adjacent wing panel is 1 mm-2 mm. The line patterns are all copper wire windings. The effective driving part of the projectile armature is a tail fin at each side, and is generally a non-magnetic aluminum good conductor, and the middle solid shape is not limited by the gap of a driving coil.
The driving coils of each of the upper, lower, left and right directions of the two-layer eight-wing type and the three-layer twelve-wing type are discharged by a group of pulse capacitors, namely energy storage capacitors C, and the current flow directions of all the driving coils are the same. Two layers of eight wings each had 3 loops (fig. 4) and three layers of twelve wings each had 4 loops (fig. 7).
As shown in fig. 1, the plate-shaped reconnection type electromagnetic emission device is a variant, and mainly comprises an upper driving coil 1, a lower driving coil, a non-magnetic conductive conductor flank (serving as a projectile armature 2), a projectile, a power supply and a conversion device. The shape of the projectile is not restricted, the side wings of the projectile are driven to accelerate, the load in the middle of the projectile can be provided with a self propulsion source, for example, the rocket is launched from a base through electromagnetic force in the launching process of the rocket, then the self propulsion source is started to continue chemical propulsion, and the effective load can also be provided with no propulsion source, so that the projectile is suitable for the conventional projectile launching.
As shown in fig. 2, which is a side view of a four-wing type reconnection electromagnetic emission device, a conventional reconnection electromagnetic emission model with tail wing only needs a pulse capacitor to discharge a pair of driving coils on a side wing.
Fig. 3-5 are two-layer eight-wing reconnection type electromagnetic emission device, which can be understood as dividing the side wings of the model in fig. 2 into two parts, sharing a driving coil in the middle, sharing a pulse capacitor on each side or sharing a pulse capacitor on four sides simultaneously to discharge the driving coil, generating eddy current by eight tail wings simultaneously, and the driving coil shared in the middle plays a role of connecting front and rear magnetic lines of force to make the reconnection better.
As shown in fig. 6, the external circuit of the two-layer eight-wing type reconnection electromagnetic transmitting device is further provided with an external circuit, and the external circuit is as follows: the pulse power supply anode is sequentially connected with the charging switch K1, the discharging switch K2, the inductor L and the resistor R in series and then connected with the pulse power supply cathode, the pulse power supply cathode is grounded, the energy storage capacitor C is connected between the junction point of the charging switch K1 and the discharging switch K2 and the ground, and the flywheel diode D cathode is connected between the junction point of the discharging switch K2 and the inductor L and the ground. By discharging the drive coil by controlling the charge-discharge switch, the drive coil can be equivalently an inductance after being energized, and the external circuits on each side are identical, with a total of four such external circuits. The driving coils of each of the upper, lower, left and right directions of the two-layer eight-wing type and the three-layer twelve-wing type are discharged by a group of pulse capacitors, namely energy storage capacitors C, and the current flow directions of all the driving coils are the same. Four groups of pulse capacitors are arranged on four sides (namely four sides), and the efficiency after optimization can be very high. The material of the projectile armature is non-magnetic aluminum good conductor.
As shown in fig. 7, which is a side view of the three-layer twelve-wing type reconnection electromagnetic transmitting device, the extension of fig. 3 is performed, but three to four layers are controlled as much as possible so as to avoid the contact of coils at two adjacent sides.
The following are examples:
by using a cross-sectional area of 4mm 2 Is used for driving the coil to the projectile body formed by winding copper wiresThe number of turns of each driving coil is 48, the projectile body is composed of aluminum good conductors, the height is 100mm, the mass is 3kg, an external circuit is shown in fig. 6, the pulse power supply voltage is 10Kv, the capacitance value is 400uf, the total number of the external circuit is four, the external circuit is one at a time, parameters are consistent, the driving coils are discharged at the same time, the outlet speed of the projectile body is 120m/s through simulation, the propulsion efficiency is as high as 27%, and the capturing effect of the projectile body is very small and negligible. The efficiency of the conventional four-wing reconnection type electromagnetic emission device is only 16% after optimization as shown in fig. 2, and the device has unique advantages in electromagnetic propulsion efficiency.
The basic structure of the invention is that the multiple wing type reconnection electromagnetic emission category is that no matter how many layers are in the category of the invention, but the scheme of the invention is utilized or equivalent substitution and transformation are considered to be in the protection scope of the claims of the invention.
Claims (3)
1. The multi-layer multi-wing reconnection type electromagnetic emission device comprises a driving coil and a projectile armature, and is characterized in that the electromagnetic emission device is two-layer eight-wing type or three-layer twelve-wing type; the two-layer eight-wing structure is as follows: the shape of the projectile armature (2) is formed by uniformly and fixedly connecting two fins on the upper, lower, left and right sides respectively on a cylinder body or a square cylinder body, the driving coil (1) consists of 12 coils with the same number of turns, 1 driving coil (1) is respectively arranged between every two fins on the upper, lower, left and right sides and the outer sides of the two fins, and the distances between the 3 driving coils and the side surfaces of the adjacent fins are the same;
the three-layer twelve-wing structure is as follows: the projectile armature shape is formed by uniformly and fixedly connecting three fins on the upper, lower, left and right sides on a square cylinder body respectively, the driving coil consists of 16 coils with the same number of turns, 1 driving coil is respectively arranged between the three fins on the upper, lower, left and right sides and the outer sides of the other two fins except the middle fin in the three fins, and the distances between the 4 driving coils and the side surfaces of the adjacent fins are the same;
the distance between the driving coil and the adjacent wing panel is 1 mm-2 mm;
the material of the projectile armature is non-magnetic aluminum good conductor.
2. The multi-layer, multi-wing, reclosing electromagnetic transmitting device according to claim 1, further comprising an external circuit, the external circuit being: the pulse power supply anode is sequentially connected with the charging switch K1, the discharging switch K2, the inductor L and the resistor R in series and then connected with the pulse power supply cathode, the pulse power supply cathode is grounded, the energy storage capacitor C is connected between the junction point of the charging switch K1 and the discharging switch K2 and the ground, and the flywheel diode D cathode is connected between the junction point of the discharging switch K2 and the inductor L and the ground.
3. The multi-layer multi-wing reconnection type electromagnetic transmitting apparatus according to claim 1, wherein the driving coils of each of the two-layer eight-wing type and the three-layer twelve-wing type are discharged by a group of pulse capacitors, i.e. energy storage capacitors C, and the current flow directions of all the driving coils are the same.
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| CN201810788469.4A CN108680058B (en) | 2018-07-18 | 2018-07-18 | Multilayer multi-wing type reconnection electromagnetic emission device |
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| CN201810788469.4A CN108680058B (en) | 2018-07-18 | 2018-07-18 | Multilayer multi-wing type reconnection electromagnetic emission device |
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| CN112504002A (en) * | 2020-10-22 | 2021-03-16 | 浙江工业大学 | Magnetic resistance type electromagnetic gun with controllable shell acceleration distance and control method |
| CN112484567B (en) * | 2020-11-30 | 2021-08-10 | 大连理工大学 | Magnetic field regulation and control method of reconnection type electromagnetic emission device |
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