CN113624069A - Armature structure for improving rotation stability of electric conductor in rail type electromagnetic transmitter - Google Patents
Armature structure for improving rotation stability of electric conductor in rail type electromagnetic transmitter Download PDFInfo
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- CN113624069A CN113624069A CN202110905208.8A CN202110905208A CN113624069A CN 113624069 A CN113624069 A CN 113624069A CN 202110905208 A CN202110905208 A CN 202110905208A CN 113624069 A CN113624069 A CN 113624069A
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- armature
- tail arm
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- rotation stability
- tail
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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
- F41B6/006—Rail launchers
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Abstract
The invention discloses an armature structure for improving the rotation stability of a conductor in a track type electromagnetic transmitter, which comprises an armature body, wherein the rear part of the armature body is provided with an armature tail arm provided with a tail arm groove, and the rear part of the armature tail arm is provided with a structure reinforcing ring; the current flows into the armature from the positive guide rail and then flows back to the negative electrode from the armature, and the magnetic field generated between the guide rails and the current between the armatures interact to form strong electromagnetic force to drive the armatures to move forwards. The armature tail arm has the function of enabling the current in the armature to interact with the magnetic field to generate electromagnetic torque for rotating the armature, so that the armature is driven to rotate while the driving armature moves forwards; after the armature rotates, the guide rail is always in contact with the armature tail arm, and the current in the armature tail arm continuously acts with the magnetic field to generate electromagnetic torque, so that the armature rotation is continuously accelerated.
Description
Technical Field
The invention relates to the technical field of electromagnetic emission, in particular to an armature structure for improving the rotation stability of a conductor in a track type electromagnetic emitter.
Background
Electromagnetic emission is a technology for driving an armature and a carrier to move at a high speed by using an electromagnetic field and a large current to generate an electromagnetic force. Electromagnetic emission is commonly used for launching aircrafts, and the aircrafts are influenced by aerodynamic force during flying in the air, so that overturning moment is easily formed to cause rolling and instability. A commonly used method for keeping the motion stability of an aircraft without a tail arm is gyrostabilization, that is, gyrostabilization is formed by rotating the flying body along the axial direction at a high speed. For example, a common gun often uses a barrel with rifling to launch a flying object, so that the flying object rotates at high speed and the rotation stability is realized. In addition to maintaining flight stability, there are also some carriers that require rotational motion when using electromagnetic emissions.
At present, the structure of the track type electromagnetic transmitter mainly comprises a conductive track, an inter-track armature and a carrier pushed by the armature. The electromagnetic emission technology utilizes large current to generate an electromagnetic field and electromagnetic force to push the armature to move at high speed, and the armature pushes the carrier to move together, so that higher speed is finally realized. The tube for electromagnetic emission is made of materials with low strength, such as high-conductivity materials, non-metallic insulating materials and the like, is easy to damage by high-speed impact, and is not suitable for processing rifling. Therefore, the track type electromagnetic transmitter is not suitable for driving the armature to rotate by using the rifling. Electromagnetic transmission often requires the transmission of an armature or carrier that moves in rotation to achieve a variety of functions. Some researchers have achieved certain effects by driving the armature to rotate by using electromagnetic force, but the proposed armature structure design has the problems of large electromagnetic force fluctuation, difficulty in controlling electromagnetic torque and the like.
Disclosure of Invention
The invention aims to provide an armature structure for improving the rotation stability of a conductor in a track type electromagnetic transmitter.
The technical solution for realizing the purpose of the invention is as follows: the armature structure comprises an armature body, wherein the rear part of the armature body is an armature tail arm provided with a tail arm groove, and the rear part of the armature tail arm is provided with a structural reinforcing ring.
Furthermore, the number of the tail arm grooves is multiple; or the tail arm grooves are single.
Further, the trailing arm slots are parallel with respect to the armature central axis.
Furthermore, the tail arm groove has a certain included angle relative to the central axis of the armature, and the included angle is less than or equal to 90 degrees.
Furthermore, the rear part of the structure reinforcing ring is provided with an inclined chamfer.
Further, the front part of the armature body is a flying body.
Furthermore, the front part of the flying body is a pointed arc surface.
Further, the flying body is a structure separated from the armature body; alternatively, the flying body is integrated with the armature body.
Compared with the prior art, the invention has the following remarkable advantages:
(1) the invention is provided with the tail arm of the insulating groove, and mainly aims to generate continuous rotating electromagnetic torque;
(2) in order to increase the strength of the tail part of the armature and prevent deformation, a circular ring structure is designed at the rear part of the tail arm of the armature, and the movement stability of the armature is improved.
Drawings
Fig. 1 is a schematic view of an armature structure provided by the present invention.
Fig. 2 is a schematic view of the structure of the tail of the armature provided by the present invention.
Wherein, 1, an armature tail arm groove; 2-armature tail arm; 3-armature rear structure reinforcement ring; 4-armature body; 5-flying body in front of armature; and 6, chamfering the inclined plane.
Detailed Description
The invention provides an armature structure for improving the rotation stability of a conductor in a track type electromagnetic launcher, wherein the armature is used for conducting current in a launcher bore, and the launcher comprises a track, an insulating material, a high-strength barrel and the like. The armature flies in the air, the armature can conduct electricity, and meanwhile, the armature has good aerodynamic characteristics and can stably fly in the air with small air resistance.
The tail arm of the armature can conduct the current of the positive and negative electrode tracks, and the current flows into the armature from the positive electrode track and then flows back to the negative electrode from the armature. The magnetic field generated between the tracks and the current vector in the armature perpendicular to the armature axis interact to form electromagnetic force to drive the armature to move forwards, and meanwhile, the magnetic field generated between the tracks and the current vector in the armature parallel to the armature axis act to form electromagnetic torque to drive the armature to rotate along the axis. After the armature rotates, the tail arm of the track contacted with the armature is switched in the circumferential direction, and the tail arm is always conducted with current along the armature axis to form a current vector parallel to the armature axis, so that the rotating torque is continuously generated, and the armature continuously rotates in an accelerated manner. In order to increase the strength of the armature tail part and prevent deformation, a circular ring structure, namely a structural reinforcing ring, is designed at the rear part of the armature tail arm for improving the movement stability of the armature.
The armature trailing arm may be parallel to the orbit axis but if the armature trailing arm is modified to be non-parallel to the armature axis in the design, the structure still produces a rotational moment without affecting the principles of the invention. The main purpose of the tail arm with the insulation groove is to generate continuous rotating electromagnetic torque, and the structural reinforcing ring at the rear part of the tail arm is mainly to increase the structural strength of the armature tail arm.
The armature is used for connecting the positive and negative electrode tracks between the tracks and conducting current between the tracks. When the armature conducts current, the armature interacts with a magnetic field generated by the conductor and generates electromagnetic force. Under the push of the electromagnetic force, the armature moves.
The armature tail arm refers to an armature rear conductive arm and is used for contacting the track, so that current in the track can flow into the armature. And the tail arm can form electromagnetic force close to the track and has a tendency of outward expansion, thereby being beneficial to enhancing the electric contact.
The armature tail arms are not integral in structure, an insulating tail arm groove is formed between the armature tail arms, and the insulating tail arm groove is formed between the tail arms, so that a conductive loop in the armature has certain rotation, and the rotation type loop means that current in the armature has current components perpendicular to an armature axis and also has current components parallel to the armature axis. The current component perpendicular to the electric pivot axis will generate a forward electromagnetic force to push the armature to move forward, and the current component parallel to the electric pivot axis will simultaneously generate a rotating electromagnetic torque to drive the projectile to rotate along the axis.
The rotary current loop in the armature is the key of the armature generating the rotating electromagnetic torque, and the principle is that when the armature conducts the current of the positive pole track and the negative pole track, the current flows into the armature from the positive pole track, part of the current flows into the negative pole track along the rear structure of the tail arm to strengthen the circulation, and part of the current flows into the throat of the armature from the positive pole track along the tail arm, then flows into the tail arm at the other side of the armature from the throat of the armature, and then flows into the negative pole track, so that a current component parallel to the armature axis is formed in the armature, and the current component and the magnetic field of the inner bore can generate the rotating torque.
The current loop in the armature is realized by the structural design of the armature tail arm, and the armature tail arm structure can form electromagnetic torque to enable the armature to rotate around the axis. The armature tail arm rotates for a circle along the surface of the armature cylindrical part structure, so that the armature can be switched to the other tail arm to continuously conduct current after rotating, the deflection electromagnetic force is continuously generated, and the armature is driven to continuously rotate.
The number of the armature tail arms arranged along the circumference of the armature surface is not limited by the principle, and can be a plurality of armature tail arms, and the armature tail arms are designed according to the structural characteristics of the actual armature.
The armature, while conducting current, also produces a magnetic field around the armature. When the magnetic field interacts with the conductive armature, a propelling force and a rotating torque are generated to drive the armature to advance and rotate.
An insulating tail arm groove or a conductive tail arm is arranged on the cylindrical surface at the rear part of the armature, and the tail arm is processed in a grooving mode.
The tail arm and the insulated tail arm slot are axially aligned along the armature.
The tail arm can slightly expand to be tightly attached to the surface of the track under the action of electromagnetic force. The rear part of the tail arm is provided with a structural reinforcing ring which can enhance the strength of the tail arm and conduct partial current.
The rear part of the tail arm rear structure reinforcing ring is provided with a chamfer, and the chamfer has the function of reducing air resistance. The width of the structural reinforcing ring, the width and the angle of the chamfer do not influence the principle of the invention.
The number of the tail arm grooves does not influence the principle of the invention, and the tail arm grooves can be single or multiple tail arm grooves. The shape and length of the groove are designed to generate a rotating moment, and the principle of the invention is not influenced.
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Examples
The tail arm-shaped armature structure provided by the invention is shown in fig. 1, fig. 1 is a form that the armature provided by the invention is combined with a flying body 5, the flying body 5 has no structural limitation, and only a schematic diagram is given in fig. 1, because the structure of the flying body 5 does not influence the content of the invention, and can be a structure separated from the armature or a structure combined with the armature. The front part of the flying body 5 shown in fig. 1 is a pointed arc surface, which is beneficial to reducing air resistance and is suitable for flying in air; the rear cylindrical body is the armature body 4. The armature body 4 has the main function of conducting current, after the armature is placed in the bore of the electromagnetic track launcher, the tracks are communicated with each other by the armature body 4, so that electromagnetic force is generated to push the armature to move, and electromagnetic torque is generated to drive the armature to rotate.
As shown in fig. 1, a plurality of trailing arm grooves 1 are formed in the rear portion of the armature body 4. As shown in fig. 2, the rear part of the armature is provided with a structural reinforcing ring 3, and the rear part of the armature tail arm 2 is provided with a structural reinforcing ring for reinforcing the strength of the armature tail arm. The tail arm slots 1 are arranged between the armature tail arms 2, and the armature tail arms 2 are insulated due to the existence of the tail arm slots 1. The tail arm grooves 1 are parallel relative to the central axis of the armature, or have a certain included angle less than or equal to 90 degrees, and when current is conducted in the lower tail arm of the structure, current components which are partially parallel to the armature axis exist.
The armature tail arms 2 have two functions, namely, the electrical contact performance is improved, and the armature tail arms 2 are separated from each other and have the tendency of expanding outwards under the action of electromagnetic force, so that the armature tail arms are tightly attached to the surface of a track, and the electrical contact performance is improved; secondly, the armature tail arm can conduct current, so that electromagnetic torque for enabling the armature to rotate is generated, and the circular armature continuously generates rotating electromagnetic torque to drive the armature to rotate. In fig. 1, a plurality of tail arm grooves 1 are shown, and in fact, the number of the tail arm grooves 1 does not affect the principle of the invention, and different numbers of the tail arm grooves 1 and the lengths, shapes and the like of the tail arm grooves 1 are designed according to different armature requirements, and the design does not affect the principle of the invention.
As shown in fig. 2, the structural reinforcing ring 3 at the rear part of the armature tail arm has three functions, namely, the strength of the armature tail arm is increased, so that the armature tail arm is not easy to deform greatly, and the structural stability of the armature tail arm is maintained; secondly, the structural reinforcement ring conducts part of current, the current has a component vertical to the armature axis, and the current component can generate electromagnetic force for pushing the armature to advance, so that the structural reinforcement ring 3 has the function of partially pushing the armature to advance; thirdly, the rear part of the structural reinforcing ring 3 is provided with an inclined chamfer 6 as shown in the figure, and the inclined chamfer can reduce shock waves, expansion waves and the like generated by the structural reinforcing ring and can reduce air resistance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. The armature structure for improving the rotation stability of the electric conductor in the rail-mounted electromagnetic transmitter comprises an armature body (4) and is characterized in that an armature tail arm (2) provided with a tail arm groove (1) is arranged at the rear part of the armature body (4), and a structural reinforcing ring (3) is arranged at the rear part of the armature tail arm (2).
2. The armature structure for improving the rotation stability of the conductor in the track type electromagnetic transmitter according to claim 1, wherein the number of the tail arm slots (1) is multiple.
3. The armature structure for improving the rotation stability of the conductor in the track type electromagnetic transmitter according to claim 1, wherein the number of the tail arm slots (1) is single.
4. An armature structure for improving the rotation stability of a conductor in an electromagnetic orbital launcher according to claim 2 or 3, wherein the tail arm slot (1) is parallel to the central axis of the armature.
5. The armature structure for improving the rotation stability of the conductor in the track-type electromagnetic transmitter according to claim 2 or 3, wherein the tail arm groove (1) has a certain included angle with respect to the central axis of the armature, and the included angle is less than or equal to 90 °.
6. The armature structure for improving the rotation stability of the conductor in the rail-type electromagnetic transmitter according to claim 1, wherein the rear part of the structure reinforcing ring (3) is provided with a bevel chamfer (6).
7. The armature structure for improving the rotation stability of the conductor in the track type electromagnetic transmitter according to claim 1, wherein the front part of the armature body (4) is a flying body (5).
8. The armature structure for improving the rotation stability of the conductive body in the orbital electromagnetic transmitter as claimed in claim 7, wherein the front part of the flying body (5) is a pointed arc surface.
9. An armature structure for improving the rotation stability of an electric conductor in an orbital electromagnetic transmitter according to claim 7 or 8, characterized in that the flying body (5) is a structure separate from the armature body (4).
10. The armature structure for improving the rotation stability of the electric conductor in the orbital electromagnetic transmitter according to claim 7 or 8, characterized in that the flying body (5) is integrated with the armature body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905208.8A CN113624069B (en) | 2021-08-08 | 2021-08-08 | Armature structure for improving rotation stability of conductor in track type electromagnetic transmitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110905208.8A CN113624069B (en) | 2021-08-08 | 2021-08-08 | Armature structure for improving rotation stability of conductor in track type electromagnetic transmitter |
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| Publication Number | Publication Date |
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| CN113624069A true CN113624069A (en) | 2021-11-09 |
| CN113624069B CN113624069B (en) | 2023-01-24 |
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| CN202110905208.8A Active CN113624069B (en) | 2021-08-08 | 2021-08-08 | Armature structure for improving rotation stability of conductor in track type electromagnetic transmitter |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4449441A (en) * | 1982-03-09 | 1984-05-22 | Westinghouse Electric Corp. | Electromagnetic projectile launcher with magnetic spin stabilization |
| US4480523A (en) * | 1981-11-06 | 1984-11-06 | Westinghouse Electric Corp. | Electromagnetic projectile launching system with a concentric rail geometry |
| US4741271A (en) * | 1986-10-06 | 1988-05-03 | Westinghouse Electric Corp. | Projectile for round bore electromagnetic launchers with spin produced or prevented by electromagnetic means |
| US5237904A (en) * | 1988-01-05 | 1993-08-24 | Kuhlmann Wilsdorf Doris | Armature/projectile for a single or multi-turn rail gun |
| WO2001031279A2 (en) * | 1999-08-27 | 2001-05-03 | Lockheed Martin Corporation | Projectile for use in an electromagnetic launcher and method therefor |
| JP2007247996A (en) * | 2006-03-17 | 2007-09-27 | Japan Steel Works Ltd:The | Electromagnetic accelerator |
| CN104964600A (en) * | 2015-05-28 | 2015-10-07 | 燕山大学 | Multi-guide-rail rotary electromagnetic railgun |
| CN110631413A (en) * | 2019-08-30 | 2019-12-31 | 南京理工大学 | Electromagnetic gun with guide rail and rifling combined in segmented mode |
| CN210400162U (en) * | 2019-08-26 | 2020-04-24 | 董泽委 | Electromagnetic weapon for gunship helicopter |
| CN113188367A (en) * | 2021-05-16 | 2021-07-30 | 南京理工大学 | Method and device for controlling armature or carrier rotation speed by changing additional track current distribution |
-
2021
- 2021-08-08 CN CN202110905208.8A patent/CN113624069B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480523A (en) * | 1981-11-06 | 1984-11-06 | Westinghouse Electric Corp. | Electromagnetic projectile launching system with a concentric rail geometry |
| US4449441A (en) * | 1982-03-09 | 1984-05-22 | Westinghouse Electric Corp. | Electromagnetic projectile launcher with magnetic spin stabilization |
| US4741271A (en) * | 1986-10-06 | 1988-05-03 | Westinghouse Electric Corp. | Projectile for round bore electromagnetic launchers with spin produced or prevented by electromagnetic means |
| US5237904A (en) * | 1988-01-05 | 1993-08-24 | Kuhlmann Wilsdorf Doris | Armature/projectile for a single or multi-turn rail gun |
| WO2001031279A2 (en) * | 1999-08-27 | 2001-05-03 | Lockheed Martin Corporation | Projectile for use in an electromagnetic launcher and method therefor |
| JP2007247996A (en) * | 2006-03-17 | 2007-09-27 | Japan Steel Works Ltd:The | Electromagnetic accelerator |
| CN104964600A (en) * | 2015-05-28 | 2015-10-07 | 燕山大学 | Multi-guide-rail rotary electromagnetic railgun |
| CN210400162U (en) * | 2019-08-26 | 2020-04-24 | 董泽委 | Electromagnetic weapon for gunship helicopter |
| CN110631413A (en) * | 2019-08-30 | 2019-12-31 | 南京理工大学 | Electromagnetic gun with guide rail and rifling combined in segmented mode |
| CN113188367A (en) * | 2021-05-16 | 2021-07-30 | 南京理工大学 | Method and device for controlling armature or carrier rotation speed by changing additional track current distribution |
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| CN113624069B (en) | 2023-01-24 |
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