CN104202895B - A kind of electric current homogenizing magnetic field structure of multistage cusped magnetic field plasma thruster - Google Patents
A kind of electric current homogenizing magnetic field structure of multistage cusped magnetic field plasma thruster Download PDFInfo
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- CN104202895B CN104202895B CN201410440268.7A CN201410440268A CN104202895B CN 104202895 B CN104202895 B CN 104202895B CN 201410440268 A CN201410440268 A CN 201410440268A CN 104202895 B CN104202895 B CN 104202895B
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- 210000002381 Plasma Anatomy 0.000 title claims abstract description 22
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- 238000011144 upstream manufacturing Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 5
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- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 2
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Abstract
The electric current homogenizing magnetic field structure of a kind of multistage cusped magnetic field plasma thruster, it relates to a kind of electric current homogenizing magnetic field structure.The present invention is to solve that the magnetic field intensity at the discharge channel wall of existing multistage cusped magnetic field plasma thruster is the highest, the electronics skewness that the magnetic induction line launched at magnetic mirror tip is too near to discharge channel axis and causes, ionization rate is low, and the problem that magnetic separating surface angle is bigger.Two fixed charge method end plates of the present invention are separately mounted in the upper and lower surface of shell, ceramic sleeve is vertically-mounted in the enclosure, anode and breather are arranged on ceramic sleeve inwall bottom and stretch out the bottom of ceramic sleeve, a magnetic guiding loop it is respectively equipped with on upper and lower end face between medial wall and the lateral wall of ceramic sleeve of shell, magnetic guiding loop one assembly of composition it is provided with in magnet ring, multiple assemblies are horizontally arranged at the interior intracavity between ceramic sleeve and shell respectively, and the medial wall of shell is provided with multiple introduction by magnetic field ring.The present invention is used for space industry.
Description
Technical field
The present invention relates to a kind of electric current homogenizing magnetic field structure, be specifically related to the electricity of a kind of multistage cusped magnetic field plasma thruster
Stream homogenizing magnetic field structure.
Background technology
Multistage cusped magnetic field plasma thruster is a kind of Novel electric thruster of principle based on hall thruster development.Should
The periphery of the discharge channel of thruster is ceramic sleeve, and uses multistage reverse permanent magnet to form cusped magnetic field, and the meeting of formation is cut
Magnetic field can fetter by the free electron of the emission of cathode being positioned at outside discharge channel, and free electron can be spinned fortune along magnetic induction line
Dynamic, and move to anode direction under the effect of electric field that produces of the high voltage applied at the anode of passage upstream, free electron is subject to
To the magnetic mirror effect of cusped magnetic field, move back and forth at two magnetic mirror tips.Electronics and the neutral gas entered from passage upstream
Working medium, usually xenon atom, collide, and on the basis of electron energy is sufficiently large, xenon atom, by electron ionization, is formed
The xenon ion of one positive monovalence and the free electron of another one negative one valency, xenon ion is accelerating jetting under the effect of space electric field
Go out the discharge channel of thruster, produce thrust.Free electron energy during collision reduces, and enters next stage and can cut magnetic
In the magnetic mirror that field produces, to the last arrive anode region, form discharge loop.Another part free electron meeting that negative electrode produces
Neutralize the positive monovalence xenon ion ejected from thruster.
The design of this multistage cusped magnetic field can separate ionized space and acceleration region, and Magnetic Mirror Effect can effective latent electricity
Son, improves ionization rate and the thrust of thruster, the efficiency of gas working medium.
The ionization rate of gas working medium be affect of the integral performance parameters such as the thrust of thruster, efficiency and specific impulse important because of
Element, ionization process is the process of electronics and neutral atom collision, and therefore magnetic field can holds onto electronics and serves key
Effect.The most universal multiple plasma thruster is very strong along the magnetic field intensity at pottery channel wall, causes near wall
Not producing obvious Magnetic Mirror Effect on magnetic induction line at face, the magnetic induction line simultaneously launched by magnetic mirror tip is many at pottery wall
Near axis under the effect of high-intensity magnetic field pressure, therefore most electronics enter on passage along the position near passage axis
Trip.
Ion after being ionized is during absorption electronics becomes neutral atom, and electronics can be to external radiation when energy level transition
Electromagnetic wave, the concentrated radiation of a large amount of electromagnetic waves will form bright light beam, and the ionization of neutral atom and positive monovalent ion
Neutralize and all can occur in the higher place of electron density, it can be considered that having the place of bright light beam is exactly neutral atom ionization
The place that rate is higher.
It can be found that have in the region of the discharge channel central diameter about 5mm of thruster in the work process of thruster
Article one, bright light is lived, and in discharge channel, the brightness of other radius can be much lower, checks rustless steel sun after having tested
It can be found that there are a diameter about 3mm, the ion etching groove of the degree of depth about 1.5mm in surface, pole in center.Therefore can sentence
Power-off son skewness in discharge channel, mainly along near axis regional movement, which results in discharge channel other half
The neutral gas of footpath scope is not ionized, and have impact on ionization rate, and then it is overall to have impact on the thruster such as thrust, efficiency
Performance parameter.
It is interfacial that the direction of the space accelerating field electronically formed almost is perpendicular to magnetic, and therefore the interfacial angle of magnetic is to plumage
The impact of stream angle is very big, and then have impact on the thruster integral performance parameters such as the thrust of electromotor, efficiency, and present is multistage
The magnetic separating surface angle of cusped magnetic field plasma thruster is affected by the dimensional fits of permanent magnet, regulates more inconvenient.
In the magnetic field configuration design process to multistage cusped magnetic field plasma thruster, it should be taken into account that electron motion position
Homogenizing problem, reduce the interfacial angle of magnetic, simultaneously should simplify thruster structure as far as possible, alleviate thruster quality and subtract
Few experimental cost.
Summary of the invention
The invention aims to the magnetic solved at the discharge channel wall of existing multistage cusped magnetic field plasma thruster
Field intensity is the highest, the electronics skewness that the magnetic induction line launched at magnetic mirror tip is too near to discharge channel axis and causes,
Ionization rate is low, and the problem that magnetic separating surface angle is bigger.And then a kind of multistage cusped magnetic field plasma thruster is provided
Electric current homogenizing magnetic field structure.
Outside the technical scheme is that the electric current homogenizing magnetic field structure of a kind of multistage cusped magnetic field plasma thruster includes
Shell, two fixed charge method end plates, ceramic sleeve, Exported Ceramics pad, anode and breather, multiple introduction by magnetic field ring, Duo Gehuan
Shape permanent magnet and multiple magnetic guiding loop, two fixed charge method end plates are separately mounted in the upper and lower surface of shell, and ceramic sleeve is vertically-mounted
In the enclosure, and the lower end of ceramic sleeve is stretched out shell, anode and breather and is arranged on ceramic sleeve inwall bottom and stretches out pottery
The bottom of insulator cylinder, the upper and lower end face between medial wall and the lateral wall of ceramic sleeve of shell is respectively equipped with a magnetic conduction
Ring, two reverse annular permanent magnets fasten composition magnet ring, are provided with magnetic guiding loop one assembly of composition in magnet ring,
Multiple assemblies are horizontally arranged at the interior intracavity between ceramic sleeve and shell respectively, and multiple assembly lays respectively at described interior intracavity
Upper and lower, the medial wall of shell is provided with multiple introduction by magnetic field ring.
The present invention compared with prior art has the effect that
1. the present invention can replace the permanent magnet of equal height, still can produce Magnetic Mirror Effect at magnetic mirror tip, by magnetic mirror point
The magnetic field intensity at ceramic channel wall between end decreases below the magnetic field intensity that axis goes out so that electronics is near pottery
More effective Magnetic Mirror Effect can be produced on the magnetic induction line of porcelain wall area,
2. the present invention can make the direction that the magnetic strength alignment radius at discharge channel axis is bigger expand, and makes electronics along magnetic
Can move to, during sense line motion, the region that radius is bigger.
3. convenient adjustment of size that the present invention can make thruster form two blocks of most advanced and sophisticated reverse permanent magnets of magnetic mirror coordinates, can be with shape
The least angled magnetic separating surface, and then be that the space electric field electronically formed is perpendicular to exit end face, make plasma plume
Angle is less.
4. the present invention can make electronics in discharge channel during anode movement distribution more effective, the most in theory can
Enough improving 10% to 20% ionization rate, improve the thrust 2mN to 10mN of thruster under identical working condition, efficiency carries
High 5% to 10%.
5. the present invention can alleviate the weight of 1kg (25%) to 2kg (50%) thruster
6. the present invention can reduce material and the processing cost of 1000 yuan to 2000 yuan, simple in construction
7. the present invention can adjust for different magnetic field configurations is convenient.
Accompanying drawing explanation
Fig. 1 be of the present invention add in the plasma thruster of multistage cusped magnetic field a kind of multistage cusped magnetic field etc. from
Magnetic field configuration schematic diagram before the electric current homogenizing magnetic field structure of daughter thruster；
Fig. 2 be of the present invention add in the plasma thruster of multistage cusped magnetic field a kind of multistage cusped magnetic field etc. from
Magnetic field configuration schematic diagram after the electric current homogenizing magnetic field structure of daughter thruster；
Fig. 3 is that the electric current homogenizing magnetic field structure of a kind of multistage cusped magnetic field of the present invention plasma thruster is in thrust
Assembling generalized section in device；
Fig. 4 is that the electric current homogenizing magnetic field structure of a kind of multistage cusped magnetic field of the present invention plasma thruster is in thrust
Assembling appearance schematic diagram in device；
Fig. 5 is the section partial view of introduction by magnetic field ring of the present invention；
Fig. 6 and Fig. 7 is two kinds of introduction by magnetic field ring appearance schematic diagram from channel outlet to passage upstream of the present invention；
The appearance schematic diagram of the magnetic guiding loop of channel exit of the present invention during Fig. 8.
Detailed description of the invention
Detailed description of the invention one: combine Fig. 3-Fig. 8 and present embodiment is described, the multistage cusped magnetic field of one of present embodiment
The electric current homogenizing magnetic field structure of plasma thruster includes 1, two fixed charge method end plates 2 of shell, ceramic sleeve 3, outlet pottery
Porcelain pad 4, anode and breather 5, multiple introduction by magnetic field ring 6, multiple annular permanent magnet 7 and multiple magnetic guiding loop 8, two
Fixed charge method end plate 2 is separately mounted in the upper and lower surface of shell 1, and ceramic sleeve 3 is vertically installed in shell 1, and ceramic jacket
The lower end of cylinder 3 is stretched out shell 1, anode and breather 5 and is arranged on ceramic sleeve 3 inwall bottom and stretches out ceramic sleeve 3
Bottom, the upper and lower end face between medial wall and the lateral wall of ceramic sleeve 3 of shell 1 is respectively equipped with a magnetic guiding loop 8,
Two reverse annular permanent magnets 7 fasten composition magnet ring, be provided with a magnetic guiding loop 8 and form an assembly in magnet ring,
Multiple assemblies are horizontally arranged at the interior intracavity between ceramic sleeve 3 and shell 1 respectively, and multiple assembly lays respectively at described interior
The upper and lower of intracavity, the medial wall of shell 1 is provided with multiple introduction by magnetic field ring 6.
The upper and lower end face of the annular permanent magnet being positioned at passage upstream of present embodiment respectively with the magnetic guiding loop of two same sizes
Contact coordinates, and inner ring surface contacts cooperation with the outside wall surface of pottery passage, and outer ring surface contacts cooperation with the internal face of thruster shell；
Present embodiment except be positioned at the upper and lower end face of the annular permanent magnet of other positions of passage upstream respectively with two magnetic conductions
Ring contact coordinates, and inner ring surface contacts cooperation with the outside wall surface of pottery passage, and outer ring surface contacts with the internal face of thruster shell joins
Close；
Present embodiment is cirque structure except being positioned at the magnetic guiding loop of other positions of channel exit, the upper and lower end face of magnetic guiding loop
Contact cooperation respectively with annular permanent magnet, introduction by magnetic field ring or fixed charge method end plate, inner ring surface coordinates with pottery channel contact, outer shroud
Face contacts cooperation with thruster shell；
The shell of the thruster of present embodiment is two sections of cirque structures with flange, is uniformly drilled with 6 in Flange Plane
The through hole of the individual a diameter of 3mm running through whole shell, is bolted and protects with thruster fixed charge method end plate and Exported Ceramics
Pad secure fit；
The fixed charge method end plate of present embodiment is provided with 45 degree of chamferings that the length of side is 2mm on an anchor ring of internal face, solid
Uniformly it is drilled with the through hole of 6 a diameter of 3mm running through whole shell on the plate of fixed end, is bolted and thruster shell
And Exported Ceramics protection pad secure fit；
Present embodiment Exported Ceramics protection pad can protect thruster, make the metal part of thruster exempt from nucleophobic directly
Connect shock, for inner ring surface with the cirque structure of cone boss, be uniformly drilled with 6 a diameter of 3mm running through whole shell
Through hole, be bolted and thruster shell and outlet fixed charge method end plate secure fit；
The external diameter of the ceramic sleeve of present embodiment contacts cooperation, upper surface and outlet pottery with the inner ring surface of magnetic guiding loop and permanent magnet
Porcelain protection pad contact coordinates, and the internal diameter of lower surface inner flange coordinates with the outer diameter contact of anode breather；
The anode breather band high voltage of present embodiment by central gas-supply, the external diameter of the air supply pipe at pedestal and ceramic sleeve
The through hole of base seals and coordinates；
The magnetic guiding loop of present embodiment and introduction by magnetic field ring use pure iron to make；
The shell of present embodiment, anode breather and fixed charge method end plate use rustless steel to make；
The ceramic passage of present embodiment and Exported Ceramics protection pad use boron nitride to make.
Detailed description of the invention two: combine Fig. 3-Fig. 8 and present embodiment is described, the annular permanent magnet 7 of present embodiment by than
Example is the samarium of 2:17 and cobalt material is made.It is arranged such, it is possible to make permanent magnet material have higher coercivity, it is possible to produce
Raw stronger magnetic field, the higher temperature produced when simultaneously can bear thruster work.Other composition and annexation and tool
Body embodiment one is identical.
Detailed description of the invention three: combine Fig. 3-Fig. 8 and present embodiment is described, the introduction by magnetic field ring 6 of present embodiment is circle
Loop configuration, the external diameter of introduction by magnetic field ring 6 is identical with the external diameter of annular permanent magnet 7, and the upper and lower end face of introduction by magnetic field ring 6 is divided
Do not coordinate with the end face of annular permanent magnet 7.Being arranged such, the annular permanent magnet of upper and lower end face can be produced by introduction by magnetic field ring
Magnetic field connect into a flux circuit, instead of original permanent magnet machine simultaneously, weaken the magnetic field intensity of channel center,
Make the magnetic induction line in passage expand outwardly, expanded the motion path of electronics, widened ionization scope, added gas working medium
Ionization rate.Other composition is identical with detailed description of the invention one or two with annexation.
Detailed description of the invention four: combine Fig. 3-Fig. 8 and present embodiment is described, the upper end of the shell 1 of present embodiment is logical
Road exports, near the upper surface and the two of generation channel exit magnetic mirror tip of the introduction by magnetic field ring 6 of shell 1 channel exit
Lower floor's annular permanent magnet 7 in individual inverse toroidal permanent magnet 7 lower surface contact coordinate, the lower surface of introduction by magnetic field ring 6 with
The upper surface contact producing the upper strata annular permanent magnet 7 in two inverse toroidal permanent magnets 7 that passage middle magnetic mirror is most advanced and sophisticated is joined
Close.It is arranged such, it is possible to make the compact conformation of thruster, and make the magnetic guiding loop between two inverse toroidal permanent magnets produce
Magnetic field intensity is higher.Other composition is identical with detailed description of the invention one or three with annexation.
Detailed description of the invention five: combine Fig. 3-Fig. 8 and present embodiment is described, the bottom of the shell 1 of present embodiment is logical
Road upstream end, in the middle of the generation passage in the upper surface of the introduction by magnetic field ring 6 at shell 1 passage upstream and an assembly
The lower surface contact of the lower floor's annular permanent magnet 7 in two inverse toroidal permanent magnets 7 that place's magnetic mirror is most advanced and sophisticated coordinates, near shell
Two that at generation passage upstream in the lower surface of the introduction by magnetic field ring 6 at 1 passage upstream and next assembly, magnetic mirror is most advanced and sophisticated
Upper strata annular permanent magnet 7 in inverse toroidal permanent magnet 7 upper surface contact coordinate, the inner ring surface of introduction by magnetic field ring 6 not with
Other objects contact, and outer ring surface contacts cooperation with the internal face of shell 1.It is arranged such, it is possible to overall not expanding thruster
On the basis of size, weaken the magnetic field intensity produced at introduction by magnetic field ring 6 mandrel line in the channel to greatest extent.Other group
Become identical with detailed description of the invention one or four with annexation.
Detailed description of the invention six: combine Fig. 3-Fig. 8 and present embodiment is described, present embodiment be positioned at leading of channel outlet
Magnet ring 8 is the loop configuration of band boss, and magnetic guiding loop 8 upper surface contacts cooperation, magnetic guiding loop 8 lower surface with one piece of fixed charge method end plate
Contact cooperation with an annular permanent magnet 7, the inner ring surface of magnetic guiding loop 8 connects with the outside wall surface of the ceramic passage in ceramic sleeve 3
Touching and coordinate, the boss inner ring surface of magnetic guiding loop 8 contacts cooperation with the outer ring surface of annular permanent magnet 7, on this magnetic guiding loop 8 uniformly
It is drilled with the through hole of 6 a diameter of 3mm, is bolted and protects pad with shell 1, fixed charge method end plate 2 and Exported Ceramics
4 coordinate.It is arranged such, it is possible to each several part of thruster is bolted one stable entirety of formation.Other composition
Identical with detailed description of the invention one or four with annexation.
The internal diameter of the introduction by magnetic field ring of the close channel exit of present embodiment is 63mm, and external diameter is 64mm, and height is
64mm, the lower surface of the lower floor's permanent magnet in two reverse permanent magnets that upper surface is most advanced and sophisticated with producing channel exit magnetic mirror contacts
Coordinating, the upper surface of the upper strata permanent magnet in two reverse permanent magnets that lower surface is most advanced and sophisticated with producing passage middle magnetic mirror contacts
Coordinate；
The internal diameter of the introduction by magnetic field ring at the close passage upstream of present embodiment is 63mm, and external diameter is 64mm, and height is 8mm,
The lower surface of the lower floor's permanent magnet in two reverse permanent magnets that upper surface is most advanced and sophisticated with producing passage middle magnetic mirror contacts cooperation,
Lower surface contacts cooperation with the upper surface of the upper strata permanent magnet produced in two reverse permanent magnets that at passage upstream, magnetic mirror is most advanced and sophisticated,
Inner ring surface does not contacts with other objects, and outer ring surface contacts cooperation with the internal face of thruster shell；
It is 40mm that present embodiment is positioned at the internal diameter of the annular permanent magnet of passage upstream, and external diameter is 64mm, and thickness is 5mm,
Upper and lower end face magnetic guiding loop with two same sizes respectively contacts cooperation, and inner ring surface contacts cooperation with the outside wall surface of pottery passage,
Outer ring surface contacts cooperation with the internal face of thruster shell；
Present embodiment is 40mm except the internal diameter being positioned at the annular permanent magnet of other positions of passage upstream, and external diameter is
64mm, thickness is 4mm, and upper and lower end face contacts cooperation, inner ring surface and the outside wall surface of pottery passage respectively with two magnetic guiding loops
Contact coordinates, and outer ring surface contacts cooperation with the internal face of thruster shell；
Present embodiment is positioned at the loop configuration that magnetic guiding loop is band boss of channel outlet, and magnetic guiding loop internal diameter is 40mm, boss
Internal diameter is 64mm, and magnetic guiding loop external diameter is 76mm, magnetic guiding loop height 2mm, height 4mm at boss, upper surface and one piece of fixed charge method end plate
Contact coordinates, and lower surface contacts cooperation with one piece of annular permanent magnet, and magnetic guiding loop inner ring surface contacts with the outside wall surface of pottery passage joins
Closing, boss inner ring surface contact cooperation with the outer ring surface of annular permanent magnet, is uniform brill at 36mm along radius on this magnetic guiding loop
There is the through hole of 6 a diameter of 3mm, be bolted and join with thruster shell, fixed charge method end plate and Exported Ceramics protection pad
Close；
Present embodiment is cirque structure except being positioned at the magnetic guiding loop of other positions of channel exit, and the internal diameter of magnetic guiding loop is
40mm, magnetic guiding loop external diameter is 64mm, and upper and lower end face contacts join with annular permanent magnet, introduction by magnetic field ring or fixed charge method end plate respectively
Closing, inner ring surface coordinates with pottery channel contact, and outer ring surface contacts cooperation with thruster shell；
The shell of present embodiment thruster is two sections of cirque structures with flange, and the internal diameter of annular is 64mm, outward
Footpath is 68mm, and height is 103mm, and the internal diameter of the flange at two ends is 64mm, and external diameter is 76mm, and the thickness of flange is 2mm,
Flange Plane is uniformly drilled with on the position of radius 36mm the through hole of 6 a diameter of 3mm running through whole shell, passes through
Bolt connects and thruster fixed charge method end plate and Exported Ceramics protection pad secure fit；
The internal diameter of present embodiment fixed charge method end plate is 40mm, and external diameter is 76mm, and thickness is 2mm, at a ring of internal face
Face is provided with 45 degree of chamferings that the length of side is 2mm, is uniformly drilled with 6 and runs through whole on the position of fixed charge method end plate radius 36mm
The through hole of a diameter of 3mm of shell, is bolted and protects pad secure fit with thruster shell and Exported Ceramics；
Present embodiment Exported Ceramics protection pad can protect thruster, make the metal part of thruster exempt from nucleophobic directly
Clashing into, for inner ring surface with the cirque structure of cone boss, internal diameter is 36mm, and external diameter is 76mm, ceramic gasket thickness
For 2mm, the height of cone boss is 2mm, and the cone angle of taper is 45 degree, is uniformly drilled with 6 on the position of radius 36mm
The through hole of the individual a diameter of 3mm running through whole shell, is bolted and fixes join with thruster shell and outlet fixed charge method end plate
Close；
The external diameter of present embodiment ceramic sleeve is 40mm, contacts cooperation, ceramic jacket with the inner ring surface of magnetic guiding loop and permanent magnet
The internal diameter of cylinder is 36mm, ceramic sleeve height 120mm, and upper surface contacts cooperation with Exported Ceramics protection pad, method in lower surface
Blue internal diameter is 4mm, coordinates with the outer diameter contact of anode breather.
The operation principle that the present invention is described in conjunction with Fig. 1-Fig. 8 is:
The periphery of the discharge channel of thruster is ceramic sleeve, and uses multistage reverse permanent magnet to form cusped magnetic field, formation
Cusped magnetic field can fetter by the free electron of the emission of cathode being positioned at outside discharge channel, and free electron can do spiral shell along magnetic induction line
Move to anode direction under rotation motion, and the effect of electric field that produces of the high voltage applied at the anode of passage upstream, freely electricity
Son, by the magnetic mirror effect of cusped magnetic field, moves back and forth at two magnetic mirror tips.Electronics and the neutrality entered from passage upstream
Gas working medium, usually xenon atom, collide, on the basis of electron energy is sufficiently large, xenon atom by electron ionization,
Forming xenon ion and the free electron of another one negative one valency of a positive monovalence, xenon ion accelerates under the effect of space electric field
Eject the discharge channel of thruster, produce thrust.
Present invention introduction by magnetic field ring replaces part permanent magnet material, and introduction by magnetic field ring can be by the annular permanent magnet of upper and lower end face
The magnetic field produced connects into a flux circuit, has reached do not changing at magnetic mirror tip on the basis of magnetic field intensity, has reduced
Magnetic field intensity at thruster central axis, makes the magnetic induction line in passage expand outwardly, has expanded the motion path of electronics, opened up
Wide ionization scope, adds the ionization rate of gas working medium, thus improves thrust and the efficiency of thruster under some operating mode.
Although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention, those skilled in the art
Other changes can also be done in spirit of the present invention, and be applied in the NM field of the present invention, certainly, these foundations
The change that present invention spirit is done all should be included in scope of the present invention.
Claims (4)
1. the electric current homogenizing magnetic field structure of a multistage cusped magnetic field plasma thruster, it is characterised in that: it includes shell
(1), two fixed charge method end plates (2), ceramic sleeve (3), Exported Ceramics pad (4), anode and breather (5),
Multiple introduction by magnetic field rings (6), multiple annular permanent magnet (7) and multiple magnetic guiding loop (8), two fixed charge method end plates (2) point
Not being arranged in the upper and lower surface of shell (1), ceramic sleeve (3) is vertically installed in shell (1), and ceramic sleeve (3)
Lower end stretch out shell (1), anode and breather (5) and be arranged on ceramic sleeve (3) inwall bottom and stretch out ceramic sleeve
(3) bottom, the upper and lower end face between medial wall and the lateral wall of ceramic sleeve (3) of shell (1) is respectively equipped with one
Individual magnetic guiding loop (8), two reverse annular permanent magnets (7) fasten composition magnet ring, are provided with one and lead in magnet ring
Magnet ring (8) one assembly of composition, multiple assemblies are horizontally arranged at the inner chamber between ceramic sleeve (3) and shell (1) respectively
In, and multiple assembly lays respectively at the upper and lower of described interior intracavity, the upper end of shell (1) is channel outlet, near outward
Two reverse rings that the upper surface of the introduction by magnetic field ring (6) of shell (1) channel exit is most advanced and sophisticated with producing channel exit magnetic mirror
Lower floor's annular permanent magnet (7) in shape permanent magnet (7) lower surface contact coordinate, the lower surface of introduction by magnetic field ring (6) with
The upper surface of the upper strata annular permanent magnet (7) in two inverse toroidal permanent magnets (7) that generation passage middle magnetic mirror is most advanced and sophisticated
Contact coordinates, and the bottom of shell (1) is at passage upstream, the introduction by magnetic field ring (6) at shell (1) passage upstream
Upper surface and an assembly in the lower floor's ring produced in two inverse toroidal permanent magnets (7) that passage middle magnetic mirror is most advanced and sophisticated
The lower surface contact of shape permanent magnet (7) coordinates, the lower surface of the introduction by magnetic field ring (6) at shell (1) passage upstream
With the upper strata annular permanent magnet produced in two inverse toroidal permanent magnets (7) that at passage upstream, magnetic mirror is most advanced and sophisticated in next assembly
The upper surface contact of body (7) coordinates, and the inner ring surface of introduction by magnetic field ring (6) does not contacts with other objects, outer ring surface and shell
(1) internal face contact coordinates.
The electric current homogenizing magnetic field structure of a kind of multistage cusped magnetic field plasma thruster, it is special
Levy and be: described annular permanent magnet (7) is made up of the samarium that ratio is 2:17 and cobalt material.
The electric current homogenizing magnetic field structure of a kind of multistage cusped magnetic field plasma thruster, it is special
Levy and be: introduction by magnetic field ring (6) is cirque structure, outside the external diameter of introduction by magnetic field ring (6) is with annular permanent magnet (7)
Footpath is identical, and the upper and lower end face of introduction by magnetic field ring (6) end face with annular permanent magnet (7) respectively coordinates.
The electric current homogenizing magnetic field structure of a kind of multistage cusped magnetic field plasma thruster, it is special
Levy and be: be positioned at the loop configuration that magnetic guiding loop (8) is band boss of channel outlet, this magnetic guiding loop (8) upper surface and one piece
Fixed charge method end plate contact coordinates, and this magnetic guiding loop (8) lower surface contacts cooperation with an annular permanent magnet (7), this magnetic guiding loop (8)
Inner ring surface contact cooperation with the outside wall surface of the ceramic passage in ceramic sleeve (3), the boss inner ring surface of this magnetic guiding loop (8)
Contact cooperation with the outer ring surface of annular permanent magnet (7), this magnetic guiding loop (8) is uniformly drilled with the logical of 6 a diameter of 3mm
Hole, is bolted and coordinates with shell (1), fixed charge method end plate (2) and Exported Ceramics protection pad (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410440268.7A CN104202895B (en) | 2014-09-01 | A kind of electric current homogenizing magnetic field structure of multistage cusped magnetic field plasma thruster |
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| CN201410440268.7A CN104202895B (en) | 2014-09-01 | A kind of electric current homogenizing magnetic field structure of multistage cusped magnetic field plasma thruster |
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