CN111120233A - Optical fiber self-consumption type laser micro-propulsion system - Google Patents
Optical fiber self-consumption type laser micro-propulsion system Download PDFInfo
- Publication number
- CN111120233A CN111120233A CN201911256951.4A CN201911256951A CN111120233A CN 111120233 A CN111120233 A CN 111120233A CN 201911256951 A CN201911256951 A CN 201911256951A CN 111120233 A CN111120233 A CN 111120233A
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- Prior art keywords
- optical fiber
- laser
- layer
- focusing lens
- propellant
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 55
- 239000000126 substance Substances 0.000 claims abstract description 27
- 239000003380 propellant Substances 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 238000010000 carbonizing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000002679 ablation Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 108091092878 Microsatellite Proteins 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H—PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H1/00—Using plasma to produce a reactive propulsive thrust
- F03H1/0006—Details applicable to different types of plasma thrusters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/40—Arrangements or adaptations of propulsion systems
- B64G1/405—Ion or plasma engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H—PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H1/00—Using plasma to produce a reactive propulsive thrust
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention belongs to the field of laser propulsion, and particularly relates to an optical fiber self-consumption type laser micro-propulsion system. The device comprises a control unit, a laser, a focusing lens and an optical fiber which are connected in sequence; the tail end of the optical fiber is provided with a propellant substance layer, the focusing lens focuses and transmits laser emitted by the laser to the input end of the optical fiber, and the optical fiber transmits the laser to the propellant substance layer at the tail end, so that the propellant substance is ionized to generate an ionized layer, and further, the reverse thrust action is generated. The system of the invention uses the energy transmission optical fiber as the working medium, and does not need to prepare a propelling substance independently, and the optical fiber energy transmission not only facilitates the transmission of laser, but also is beneficial to the layout of the system.
Description
Technical Field
The invention belongs to the field of laser propulsion, and particularly relates to an optical fiber self-consumption type laser micro-propulsion system.
Background
The rapid development of microsatellites necessitates the research of a micro-propulsion technology with light weight, low power consumption, high efficiency, low thrust and micro-impulse. The laser propulsion technology is a novel propulsion technology based on the interaction principle of laser and substances. The laser is a propulsion technology and has the characteristics of accurate thrust, higher specific impulse and simple structure.
Currently, laser propulsion techniques mainly include both transmissive and reflective, depending on the mode of operation. Although the reflective type has a simple structure, the lens is easily polluted by the sprayed substances generated by laser ablation. The transmission target material is composed of a substrate layer and an ablation layer, wherein the compactness of the ablation layer has a great influence on the propulsion efficiency and the accuracy of the later test, which puts relatively high requirements on the formulation of the ablation layer.
Disclosure of Invention
The invention aims to provide an optical fiber self-consumption type laser micro-propulsion system.
The technical solution for realizing the purpose of the invention is as follows: an optical fiber self-consumption type laser micro-propulsion system comprises a control unit, a laser, a focusing lens and an optical fiber which are sequentially connected;
the tail end of the optical fiber is provided with a propellant substance layer, the focusing lens focuses and transmits laser emitted by the laser to the input end of the optical fiber, and the optical fiber transmits the laser to the propellant substance layer at the tail end, so that the propellant substance is ionized to generate an ionized layer, and further, the reverse thrust action is generated.
Further, the input end face of the optical fiber is fixed at a position where a focused spot of a laser beam generated by the laser is smaller than the diameter of the optical fiber.
Furthermore, the end of the optical fiber is provided with a propellant substance layer which is obtained by carbonizing, grinding and ablating the surface of the optical fiber tail fiber.
Furthermore, the optical fiber is made of bare fiber, and the core diameter of the optical fiber is 200-1000 um.
Furthermore, the laser adopts a solid laser, the wavelength is 800-1100 nm, the pulse width is 5-100 ns, and the pulse energy is 30-100 mj.
Furthermore, the focusing lens is a plano-convex lens with the diameter of 10-50 mm and the focal length of 2-20 cm
Compared with the prior art, the invention has the remarkable advantages that:
(1) the laser is coupled into the input end face of the optical fiber through the focusing lens, the laser is transmitted to the propelling substance interface layer at the tail end of the optical fiber in the optical fiber, the laser in the whole process is transmitted in the optical fiber, the influence of environmental factors on the laser is avoided when the optical path is closed during the transmission of the laser, and the optical path is simplified;
(2) the propelling substance is obtained by processing the end face of the optical fiber in special modes of carbonization, grinding, ablation and the like, is directly embedded at the tail end of the optical fiber, has no assembly problem with the optical fiber, simplifies the coupling structure of laser and propelling substance, and simultaneously, a propelling substance storage structure is not required to be additionally arranged on a laser propelling system, thereby simplifying the structure of the system;
(3) the invention can realize the control of the thrust by controlling the laser intensity, and is easy to realize the accurate control of the thrust.
Drawings
FIG. 1 is a schematic diagram of an optical fiber self-consuming laser micro-propulsion system according to the present invention.
Description of reference numerals:
1-control unit, 2-laser, 3-focusing lens, 4-optical fiber, 5-ablation layer, 6-ionization layer, 7-laser beam.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
As shown in fig. 1, a fiber self-consuming laser micro-propulsion system, the system comprising: the device comprises a control unit 1, a laser 2, a focusing lens 3 and an optical fiber 4; the control unit 1 is connected with the laser 2, the laser output by the laser 2 is transmitted to the input end of the optical fiber through the focusing lens 3, and the optical fiber 4 transmits the laser to the tail end to act.
The propelling working medium of the system is a substance with a low ablation threshold value obtained by special treatment on the output end face of the optical fiber, and the propelling force is generated by ablating the substance by laser. The energy release rate of the propelling substance can be controlled by controlling the power density of the laser, so that the control of the magnitude of the propelling force is realized.
The propellant substance is obtained by directly processing the optical fiber, so that it is not necessary to separately prepare the propellant substance, and the structure of the propellant system is simplified. The optical fiber is used as a medium for propelling laser plasma, so that the optical path is simplified.
The bare fiber adopted by the optical fiber has a core diameter of 200-1000 um.
The laser adopts Nd: YAG solid laser, wavelength 800-1100 nm, pulse width 5-100 ns, pulse energy 30-100 mj.
The focusing lens is a plano-convex lens, the diameter of the plano-convex lens is 10-50 mm, and the focal length of the plano-convex lens is 2-20 cm.
The end face of the optical fiber 4 is processed by special modes such as carbonization, grinding, ablation and the like to obtain the optical fiber with the tail end containing the propelling substance.
When the system starts to work, the control unit 1 controls the laser 2 to generate laser beams, the laser beams are focused through the focusing lens 3, and the input end face of the optical fiber is fixed at the position close to the position where the focused light spot is smaller than the diameter of the optical fiber, so that the larger coupling efficiency can be realized, and the damage probability of the optical fiber can be reduced; the laser is transmitted to the ablation layer at the tail end of the optical fiber through the optical fiber 4, as the propelling substance of the ablation layer 5 is obtained by carbonizing, grinding or ablating the optical fiber, and the special structure has larger absorptivity to the laser, the propelling substance absorbs the laser in large quantity on the ablation layer, so that the energy of the laser is accumulated in large quantity, and when the heat is accumulated to a certain degree, the propelling substance is ionized and sputtered, and further thrust is generated; the ionization degree and the sputtering degree of the propelling substance are different due to different laser powers, so that the propelling force of the micro-propelling system can be controlled by adjusting the output power of the laser.
Claims (6)
1. An optical fiber self-consumption type laser micro-propulsion system is characterized by comprising a control unit (1), a laser (2), a focusing lens (3) and an optical fiber (4) which are sequentially connected;
the tail end of the optical fiber (4) is provided with a propellant substance layer, the focusing lens (3) focuses and transmits laser emitted by the laser (2) to the input end of the optical fiber (4), and the optical fiber (4) transmits the laser to the propellant substance layer at the tail end, so that the propellant substance is ionized to generate an ionized layer (6), and further, the reverse thrust action is generated.
2. The system according to claim 1, characterized in that the input end face of the optical fiber (4) is fixed at a position where the focused spot of the laser beam generated by the laser (2) is smaller than the diameter of the optical fiber.
3. The system according to claim 1, characterized in that the end of the optical fiber (4) is provided with a layer of propellant material obtained by carbonizing, grinding and ablating the surface of the fiber pigtail.
4. The system according to claim 1, wherein the optical fiber (4) is a bare fiber with a core diameter of 200-1000 um.
5. The system according to claim 1, wherein the laser (2) is a solid laser with a wavelength of 800-1100 nm, a pulse width of 5-100 ns and a pulse energy of 30-100 mj.
6. The system according to claim 1, wherein the focusing lens (3) is a plano-convex lens with a diameter of 10-50 mm and a focal length of 2-20 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256951.4A CN111120233A (en) | 2019-12-10 | 2019-12-10 | Optical fiber self-consumption type laser micro-propulsion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256951.4A CN111120233A (en) | 2019-12-10 | 2019-12-10 | Optical fiber self-consumption type laser micro-propulsion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111120233A true CN111120233A (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911256951.4A Pending CN111120233A (en) | 2019-12-10 | 2019-12-10 | Optical fiber self-consumption type laser micro-propulsion system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107672824A (en) * | 2017-09-30 | 2018-02-09 | 北华航天工业学院 | Optical-fiber laser self-propelled universe bareboat control system |
| CN107725298A (en) * | 2017-09-30 | 2018-02-23 | 北华航天工业学院 | Optical-fiber laser self-propelled universe bareboat propulsion system |
| CN107939625A (en) * | 2017-11-13 | 2018-04-20 | 中国人民解放军国防科技大学 | Reflection type laser-electromagnetic field coupling thruster |
| KR101871951B1 (en) * | 2017-05-23 | 2018-06-27 | 경북대학교 산학협력단 | Plasma thruster, satellite device including the same, and plasma thrusting method |
| RU2018111734A (en) * | 2017-04-04 | 2019-10-03 | Тесат-Спейском Гмбх & Ко. Кг | Frequency control for an ion engine frequency generator |
-
2019
- 2019-12-10 CN CN201911256951.4A patent/CN111120233A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2018111734A (en) * | 2017-04-04 | 2019-10-03 | Тесат-Спейском Гмбх & Ко. Кг | Frequency control for an ion engine frequency generator |
| KR101871951B1 (en) * | 2017-05-23 | 2018-06-27 | 경북대학교 산학협력단 | Plasma thruster, satellite device including the same, and plasma thrusting method |
| CN107672824A (en) * | 2017-09-30 | 2018-02-09 | 北华航天工业学院 | Optical-fiber laser self-propelled universe bareboat control system |
| CN107725298A (en) * | 2017-09-30 | 2018-02-23 | 北华航天工业学院 | Optical-fiber laser self-propelled universe bareboat propulsion system |
| CN107939625A (en) * | 2017-11-13 | 2018-04-20 | 中国人民解放军国防科技大学 | Reflection type laser-electromagnetic field coupling thruster |
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Application publication date: 20200508 |