CN109443085B - Electromagnetic track gun C-shaped armature - Google Patents
Electromagnetic track gun C-shaped armature Download PDFInfo
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- CN109443085B CN109443085B CN201811634786.7A CN201811634786A CN109443085B CN 109443085 B CN109443085 B CN 109443085B CN 201811634786 A CN201811634786 A CN 201811634786A CN 109443085 B CN109443085 B CN 109443085B
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- grooves
- drag reduction
- bionic
- track
- electromagnetic
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- Linear Motors (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
The invention discloses an electromagnetic track gun C-shaped armature, and belongs to the technical field of electromagnetic emission. The invention comprises a windward side, a top surface, a bottom surface, a side surface A, a side surface B, a leeward side and an inner surface; the leeward surface is in circular arc transition with the top surface, the bottom surface and the inner surface respectively; the windward side is in arc transition with the top surface and the bottom surface respectively, and bionic shark skin drag reduction surfaces are uniformly distributed on the three sides; the bionic shark skin drag reduction surface is provided with a plurality of rows of grooves which are consistent with the track trend, and the depths of the grooves are the same; the side surface A and the side surface B are uniformly provided with bionic super-hydrophobic drag reduction surfaces; the bionic superhydrophobic drag reduction surface is a plurality of rows of protrusions with the trend perpendicular to the track trend, and the protruding surface is a part of a sphere. The invention can effectively reduce the air resistance in the armature flight process, ensure the stability of the armature flight attitude, and simultaneously improve the shooting precision and the shooting range of the electromagnetic track gun.
Description
Technical Field
The invention belongs to the technical field of electromagnetic emission, and relates to an electromagnetic track gun C-shaped armature.
Background
The electromagnetic track gun is a new type of launching device which uses electromagnetic force to drive armature and converts electromagnetic energy into mechanical energy. Electromagnetic track cannons, which use electromagnetic energy as the source of firing energy, impart higher velocity and greater kinetic energy to the armature than weapons that use chemical energy as the source of firing energy. However, due to the special appearance of the armature, the air resistance of the armature after being launched out of the chamber is larger, and meanwhile, due to superposition of self gravity, phenomena such as swinging and overturning can occur in the flying process, so that the flying stability and the shooting precision of the armature are reduced. Therefore, how to reduce the air resistance of the armature is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention provides an electromagnetic track gun C-shaped armature, which aims to effectively reduce air resistance in the flying process after the electromagnetic track gun armature is emitted out of a chamber and improve the flying attitude stability.
The technical scheme of the invention is as follows: an electromagnetic track gun C-shaped armature comprises a windward side, a top surface, a bottom surface, a side surface A, a side surface B, a leeward side and an inner surface; the device is characterized in that the leeward surface is in circular arc transition with the top surface, the bottom surface and the inner surface respectively; the windward side is in arc transition with the top surface and the bottom surface respectively, and bionic shark skin drag reduction surfaces are uniformly distributed on the three sides; the bionic shark skin drag reduction surface is provided with a plurality of rows of grooves which are consistent with the track trend, and the depths of the grooves are the same; the side surface A and the side surface B are uniformly provided with bionic super-hydrophobic drag reduction surfaces; the bionic superhydrophobic drag reduction surface is a plurality of rows of protrusions with the trend perpendicular to the track trend, and the protruding surface is a part of a sphere.
The further technical scheme is that the ratio of the depth to the width of the groove is 1:1, the distances between the grooves are the same, and the ratio of the width of the groove to the distance between the grooves is 1:5.
The further technical scheme is that the depth and the width of the grooves are 0.2mm, and the interval between the grooves is 1mm.
The further technical scheme is that the ratio of the height of the protrusion to the radius of the circular bottom surface of the protrusion is 1:2.
The further technical scheme is that the height of the protrusion is 0.16mm, and the radius of the circular bottom surface of the protrusion is 0.32mm.
The further technical scheme is that two adjacent rows of the bulges are staggered.
The further technical scheme is that the distance ratio of the dislocation distance of the adjacent two rows of the protrusions in the direction perpendicular to the track trend to the distance between the adjacent two protrusions in each row is 1:2.
compared with the prior art, the invention has the following advantages: the electromagnetic track gun armature combined by the two bionic drag reduction surfaces can effectively reduce air resistance born by the armature in the flying process, ensure the stability of the flying attitude of the armature, and improve the shooting precision and the shooting range of the electromagnetic track gun.
Drawings
FIG. 1 is a schematic view of the three-dimensional structure of the present invention;
FIG. 2 is a schematic view of a three-dimensional structure of the present invention from the front of a windward side;
fig. 3 is a schematic front view of a side surface a of a three-dimensional structure according to the present invention.
In the figure: 1. a windward side; 2. side a; 3. a bionic superhydrophobic drag reduction surface; 4. a bottom surface; 5. a lee surface; 6. an inner surface; 7. a top surface; 8. a side B; 9. bionic shark skin drag reducing surface.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
based on the existing electromagnetic track gun C-shaped armature, the invention performs bionic surface drag reduction research, and focuses on bionic shark skin surface drag reduction and bionic super-hydrophobic surface drag reduction. The bionic shark skin surface achieves the aim of reducing resistance by simulating, amplifying and simplifying the groove structure of the cortical scale of the shark skin surface, and the bionic super-hydrophobic surface also achieves the aim of reducing resistance by simulating, amplifying and simplifying the micro-nano structure of the plant hydrophobic surface. In the invention, the applicant combines two drag reduction modes, the bionic super-hydrophobic surfaces are arranged on the two side surfaces of the C-shaped armature of the electromagnetic track gun, and the bionic shark skin surfaces are arranged on the windward side and the upper and lower sides which are in direct contact with the guide rail, so that the air resistance of the armature after the armature is discharged from the chamber is effectively reduced, the stability of the flying gesture is ensured, the emission precision of the electromagnetic track gun is improved, and the range is increased.
Specifically, as shown in the figure, the invention discloses an electromagnetic track gun C-shaped armature, which comprises a windward side 1, a top surface 7, a bottom surface 4, a side surface A2, a side surface B8, a leeward side 5 and an inner surface 6; the device is characterized in that the leeward surface 5 is in arc transition with the top surface 7, the bottom surface 4 and the inner surface 6 respectively; the windward side 1 is in arc transition with the top surface 7 and the bottom surface 4 respectively, and the three sides are uniformly provided with bionic shark skin drag reduction surfaces 9; the bionic shark skin drag reduction surface 9 is provided with a plurality of rows of grooves which are consistent with the track trend, and the depths of the grooves are the same; the side surface A2 and the side surface B8 are uniformly provided with bionic super-hydrophobic drag reduction surfaces 3; the bionic superhydrophobic drag reduction surface 3 is a plurality of rows of protrusions with the trend perpendicular to the track trend, and the protruding surface is a part of a sphere.
In a further preferred embodiment of the present invention, the ratio of the depth to the width of the grooves is 1:1, the pitches of the grooves are the same, and the ratio of the width of the grooves to the pitch between the grooves is 1:5.
In a further preferred embodiment of the present invention, the depth and width of the grooves are both 0.2mm, and the interval between the grooves is 1mm.
A further preferred embodiment of the invention is that the ratio of the height of the protrusions to the radius of the rounded bottom surface of the protrusions is 1:2.
In a further preferred embodiment of the invention, the height of the protrusions is 0.16mm and the radius of the circular bottom surface of the protrusions is 0.32mm.
In a further preferred embodiment of the present invention, two adjacent rows of the protrusions are staggered.
In a further preferred embodiment of the present invention, the distance ratio between the dislocation distance between two adjacent rows of the protrusions in the direction perpendicular to the track direction and the distance between two adjacent protrusions in each row is 1:2.
in a further preferred embodiment of the invention, the distance between two adjacent rows of said projections in the direction perpendicular to the track direction is 0.5mm, and the distance between two adjacent projections in each row is 1mm.
In a further preferred embodiment of the invention, the length l of the armature is 25mm, the width m is 12mm, the height n is 20.4mm, and the windward side 1, the leeward side 5, the side A2 and the side B8 are all planes; the top surface 7 and the bottom surface 4 are formed by transition of two planes, wherein the radius of the transition arc is 10mm; the top surface 7 and the bottom surface 4 are respectively in a plane I in arc transition with the windward side 1; the radius of the transitional arc is 5mm, and the top surface 7 and the bottom surface 4 are respectively in a plane II in arc transition with the lee surface 5; the radius of the transitional arc is 1mm, and the included angle between the first plane and the second plane is 17 degrees; the inner surface 6 comprises a front end and two side wings, the front end and the two side wings are respectively in arc transition, and the radius of the transition arc is 3mm; the front end is a plane and is parallel to the windward side 1, the two side wings are planes, and the included angles between the two side wings and the plane I are 17 degrees. The first plane is perpendicular to the lee surface 5 and the windward surface 1.
Claims (5)
1. An electromagnetic track gun C-shaped armature comprises a windward side, a top surface, a bottom surface, a side surface A, a side surface B, a leeward side and an inner surface; the device is characterized in that the leeward surface is in circular arc transition with the top surface, the bottom surface and the inner surface respectively; the windward side is in arc transition with the top surface and the bottom surface respectively, and bionic shark skin drag reduction surfaces are uniformly distributed on the three sides; the bionic shark skin drag reduction surface is provided with a plurality of rows of grooves which are consistent with the track trend, and the depths of the grooves are the same; the side surface A and the side surface B are uniformly provided with bionic super-hydrophobic drag reduction surfaces; the bionic super-hydrophobic drag reduction surface is a plurality of rows of bulges with the trend perpendicular to the track trend, the bulge surface is a part of a sphere, the ratio of the depth to the width of the groove is 1:1, the distances between the grooves are the same, the ratio of the width of the groove to the distance between the grooves is 1:5, and the adjacent two rows of bulges are staggered.
2. An electromagnetic track gun C-shaped armature according to claim 1, wherein the ratio of the height of the protrusion to the radius of the circular bottom surface of the protrusion is 1:2.
3. The electromagnetic track gun C-shaped armature of claim 1, wherein the distance ratio of the dislocation distance between two adjacent rows of the protrusions in the direction perpendicular to the track direction to the distance between two adjacent protrusions in each row is 1:2.
4. the C-shaped armature of an electromagnetic track gun according to claim 1, wherein the depth and width of the grooves are 0.2mm, and the interval between the grooves is 1mm.
5. An electromagnetic track gun C-shaped armature according to claim 2, wherein the height of the protrusion is 0.16mm and the radius of the circular bottom surface of the protrusion is 0.32mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634786.7A CN109443085B (en) | 2018-12-29 | 2018-12-29 | Electromagnetic track gun C-shaped armature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811634786.7A CN109443085B (en) | 2018-12-29 | 2018-12-29 | Electromagnetic track gun C-shaped armature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109443085A CN109443085A (en) | 2019-03-08 |
| CN109443085B true CN109443085B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811634786.7A Active CN109443085B (en) | 2018-12-29 | 2018-12-29 | Electromagnetic track gun C-shaped armature |
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| CN (1) | CN109443085B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4953441A (en) * | 1986-07-15 | 1990-09-04 | Board Of Regents, The University Of Texas System | Method and construction for control of current distribution in railgun armatures |
| US5183957A (en) * | 1986-07-15 | 1993-02-02 | Board Of Regents, The University Of Texas System | Method and construction for control of current distribution in railgun armatures |
| CN201016642Y (en) * | 2006-12-08 | 2008-02-06 | 华中科技大学 | Electromagnetic track gun |
| JP2010185606A (en) * | 2009-02-12 | 2010-08-26 | Japan Steel Works Ltd:The | Electromagnetic railgun |
| JP2014105885A (en) * | 2012-11-26 | 2014-06-09 | Japan Steel Works Ltd:The | Electromagnetic accelerator |
| CN205212565U (en) * | 2015-11-17 | 2016-05-04 | 河北工业大学 | Rail mounted electromagnetic emission armature with magnetizer |
| CN106595389A (en) * | 2016-11-25 | 2017-04-26 | 中国人民解放军装备学院 | Method for inhibiting armature transition through reducing vortex based on empennage layering |
| CN106595390A (en) * | 2016-11-25 | 2017-04-26 | 中国人民解放军装备学院 | Inhibition method for armature melting based on armature pre-acceleration with goal of reducing heat accumulation on contract surface |
| CN109029092A (en) * | 2018-07-26 | 2018-12-18 | 北京机械设备研究所 | A kind of electromagnetic railgun track, armature and electromagnetic railgun |
| CN209279797U (en) * | 2018-12-29 | 2019-08-20 | 燕山大学 | A kind of electromagnetic railgun c-type armature |
-
2018
- 2018-12-29 CN CN201811634786.7A patent/CN109443085B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4953441A (en) * | 1986-07-15 | 1990-09-04 | Board Of Regents, The University Of Texas System | Method and construction for control of current distribution in railgun armatures |
| US5183957A (en) * | 1986-07-15 | 1993-02-02 | Board Of Regents, The University Of Texas System | Method and construction for control of current distribution in railgun armatures |
| CN201016642Y (en) * | 2006-12-08 | 2008-02-06 | 华中科技大学 | Electromagnetic track gun |
| JP2010185606A (en) * | 2009-02-12 | 2010-08-26 | Japan Steel Works Ltd:The | Electromagnetic railgun |
| JP2014105885A (en) * | 2012-11-26 | 2014-06-09 | Japan Steel Works Ltd:The | Electromagnetic accelerator |
| CN205212565U (en) * | 2015-11-17 | 2016-05-04 | 河北工业大学 | Rail mounted electromagnetic emission armature with magnetizer |
| CN106595389A (en) * | 2016-11-25 | 2017-04-26 | 中国人民解放军装备学院 | Method for inhibiting armature transition through reducing vortex based on empennage layering |
| CN106595390A (en) * | 2016-11-25 | 2017-04-26 | 中国人民解放军装备学院 | Inhibition method for armature melting based on armature pre-acceleration with goal of reducing heat accumulation on contract surface |
| CN109029092A (en) * | 2018-07-26 | 2018-12-18 | 北京机械设备研究所 | A kind of electromagnetic railgun track, armature and electromagnetic railgun |
| CN209279797U (en) * | 2018-12-29 | 2019-08-20 | 燕山大学 | A kind of electromagnetic railgun c-type armature |
Non-Patent Citations (1)
| Title |
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| 电磁轨道炮结构改进与性能仿真对比分析;陈青荣;舒涛;丁日显;薛新鹏;刘明;;弹箭与制导学报(第04期);全文 * |
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| CN109443085A (en) | 2019-03-08 |
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