KR101871951B1 - Plasma thruster, satellite device including the same, and plasma thrusting method - Google Patents

Plasma thruster, satellite device including the same, and plasma thrusting method Download PDF

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Publication number
KR101871951B1
KR101871951B1 KR1020170063703A KR20170063703A KR101871951B1 KR 101871951 B1 KR101871951 B1 KR 101871951B1 KR 1020170063703 A KR1020170063703 A KR 1020170063703A KR 20170063703 A KR20170063703 A KR 20170063703A KR 101871951 B1 KR101871951 B1 KR 101871951B1
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South Korea
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flexible optical
optical fibers
optical fiber
plasma
flexible
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KR1020170063703A
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Korean (ko)
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박춘상
서희석
김동하
태흥식
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경북대학교 산학협력단
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64GCOSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
    • B64G1/00Cosmonautic vehicles
    • B64G1/22Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
    • B64G1/40Arrangements or adaptations of propulsion systems
    • B64G1/405Ion or plasma engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03HPRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03H1/00Using plasma to produce a reactive propulsive thrust
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00Generating plasma; Handling plasma
    • H05H1/54Plasma accelerators

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Remote Sensing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma Technology (AREA)

Abstract

A plasma thrust generating apparatus is disclosed. The plasma thrust generating apparatus includes: a flexible optical fiber array including a plurality of flexible optical fibers; a gas supply section for supplying an inert gas to the flexible optical fiber array; an electrode section surrounding a part of each of the plurality of flexible optical fibers; And a control unit controlling the gas supply unit to supply an inert gas to each of the plurality of flexible optical fibers and controlling the power unit to apply a voltage to the electrode unit so that plasma is generated and discharged in the plurality of flexible optical fibers.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a plasma thrust generating device, a satellite device including the plasma thrust generating device, and a plasma thrust generating method.

More particularly, the present invention relates to a plasma thrust generator comprising a flexible optical fiber, a satellite apparatus including the plasma thrust generator, and a control method thereof. [0002] The present invention relates to a plasma thrust generator, a satellite apparatus including the same, and a plasma thrust generator.

Recent developments in aerospace technology have enabled the production of small satellites. In the case of small satellites, it is smaller in size, less in weight, easier to manufacture, cheaper in development cost and shorter in development period, and can be used for practical purposes such as earth observation or low orbit satellite mobile communication, Many are being produced.

However, in the case of small satellites, it is necessary to downsize the size and weight. Therefore, in the case of the conventional small satellite, the thrust generating device is not used separately. Therefore, there is a problem that the small satellite apparatus can not move in a desired trajectory, speed and direction, and can not be used for a long time.

Even if a thrust generator is attached to overcome such a problem, the size and weight of the conventional thrust generator are difficult to mount on small satellites. Therefore, a need has arisen for a thrust generating device and its technology that can be mounted on a small satellite device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above needs, and it is an object of the present disclosure to provide a method of using a flexible optical fiber, which is a small and lightweight material, to generate a thrust force of a satellite device in a desired direction, And a satellite device using the same, and a plasma thrust generating method therefor.

According to an aspect of the present invention, there is provided an apparatus for generating plasma thrust comprising: an optical fiber array including a plurality of flexible optical fibers; a gas supply unit for supplying gas to the flexible optical fiber array; And controlling the gas supply unit to supply the gas to the plurality of flexible optical fibers and to control the power supply unit to apply a voltage to the electrode unit so that the plurality of flexible optical fibers So that plasma is generated and discharged.

Here, the flexible optical fiber array includes three flexible fibers arranged in parallel, and two flexible fibers disposed at the edges of the three flexible fibers are equal in length to each other, and one flexible The optical fiber may be longer than the remaining flexible optical fiber.

The optical fiber array includes three flexible fibers arranged in parallel, two flexible fibers arranged at the edges of the three flexible fibers are equal in length, and one flexible fiber disposed in the center May be shorter than the remaining flexible optical fibers.

The optical fiber array may include three flexible optical fibers arranged parallel to each other so as to correspond to vertexes of a triangle.

Each of the flexible optical fibers may be in the form of a tube, and the gas supply unit may supply at least one of helium and argon to the plurality of flexible optical fibers.

Each of the flexible optical fibers is in the form of a tube, and the gas supply unit can supply one of helium and argon and iodine (I) to the plurality of flexible optical fibers.

Here, the plasma thruster may include a driving unit for bending the optical fiber array, and the control unit may control the driving unit to bend the optical fiber array in a direction opposite to a direction in which the thrust is to be obtained.

The thrust generating method of the plasma thrust generating apparatus includes a step of supplying gas to an optical fiber array composed of a plurality of flexible optical fibers, a step of wrapping a part of each of the plurality of flexible optical fibers so as to generate and discharge plasma in the plurality of flexible optical fibers And applying a voltage to the electrode.

Here, the optical fiber array includes three flexible optical fibers arranged in parallel, and two flexible optical fibers disposed at the edges of the three flexible optical fibers have the same length, and one flexible optical fiber disposed at the center May be longer than the remaining flexible optical fibers.

The method may further include bending the optical fiber array in a direction opposite to a direction in which the thrust is to be obtained.

The satellite thrust generator includes a plasma thrust generator for generating a thrust for moving the satellite device, and a controller for controlling operations of the plasma thrust generator. The plasma thrust generator includes an optical fiber including a plurality of flexible optical fibers, Wherein the control unit controls the gas supply unit to supply the gas to each of the plurality of flexible optical fibers, and the control unit controls the gas supply unit to supply the gas to the plurality of flexible optical fibers, And controls the power unit to apply a voltage to the electrode unit so that plasma is generated and discharged in the plurality of flexible optical fibers.

Here, the flexible optical fiber array includes three flexible fibers arranged in parallel, and two flexible fibers disposed at the edges of the three flexible fibers are equal in length to each other, and one flexible optical fiber May be longer than the remaining flexible optical fibers.

According to various embodiments of the present invention as described above, the direction of the plasma discharge can be freely changed by using the flexible optical fiber and the number of thrusters necessary for each of three axes of the satellite apparatus can be reduced, Simplification, miniaturization and weight reduction can be achieved.

According to various embodiments of the present invention as described above, the direction of the plasma discharge can be freely changed by using the flexible optical fiber and the number of thrusters necessary for each of three axes of the satellite apparatus can be reduced, Simplification, miniaturization and weight reduction can be achieved.

1 is a view for explaining a satellite apparatus according to an embodiment of the present invention;
2 is a block diagram illustrating a configuration of a satellite apparatus according to an embodiment of the present invention;
FIG. 3 is a block diagram illustrating a configuration of a plasma thrust generator according to an embodiment of the present invention. FIG.
FIGS. 4 to 7 are views for explaining a configuration of a flexible optical fiber array according to various embodiments of the present invention;
FIGS. 8 to 9 illustrate an image showing the degree of plasma emission of each of the flexible optical fiber arrays of FIGS. 4 to 7 according to various embodiments of the present invention,
10 is an image showing the degree of plasma emission of each of the flexible optical fiber arrays of FIGS. 4 to 6 according to various embodiments of the present invention,
FIGS. 11 and 12 are views for explaining a configuration of a gas supply unit for providing a gas to a flexible optical fiber array according to an embodiment of the present invention;
13 is a block diagram illustrating a configuration of a plasma thrust generator according to an embodiment of the present invention.
14 is a view for explaining a configuration of a driving unit for bending a flexible optical fiber array according to an embodiment of the present invention,
15 is a diagram for explaining a method for controlling movement of a satellite apparatus according to an embodiment of the present invention,
16 is a diagram for explaining an example of a method for changing the moving direction of the satellite apparatus.

Hereinafter, the present invention will be described in detail with reference to the drawings.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the contents throughout the present disclosure.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention. Also, the terms "part," " module, "and the like described in the specification mean units for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. However, the present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. In order that the present disclosure may be more fully understood, the same reference numbers are used throughout the specification to refer to the same or like parts.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram for explaining a satellite apparatus 1000 according to an embodiment of the present disclosure. Referring to FIG. 1, a satellite apparatus 1000 includes a plasma thrust generating apparatus 100.

The plasma thrust generator 100 refers to a device that generates a thrust using a plasma discharge. In this specification, the plasma thruster generator 100 is referred to as a plasma thruster generator 100, but may be named by another name such as a propulsion device or a driving device.

The plasma thruster generating apparatus 100 includes a flexible optical fiber array 110. The flexible optical fiber array 110 includes a plurality of flexible optical fibers, wherein a portion of each flexible optical fiber protrudes outside the satellite device 1000.

For example, as shown in FIG. 1, the flexible optical fiber array 110 may protrude outward from the side surface 1000-1 of the satellite apparatus 1000. [0050] FIG. However, this is only an example, and the flexible optical fiber array 110 may protrude from a lower portion of the satellite apparatus 1000 or the like.

Meanwhile, the satellite device 1000 may be implemented as a nano-satellite. Here, the nano-satellite means a small satellite with a side length of 10 cm and a weight of 10 to 1 kg.

However, this is only an example, and the satellite device 1000 may be implemented in various sizes and weights. For example, the satellite device 1000 may be implemented with mini-satellites (100-500 kg), micro-satellites (10-100 kg), pico satellites (1 kg or less), and the like.

FIG. 2 is a block diagram illustrating a configuration of a satellite apparatus 1000 according to an embodiment of the present invention.

Referring to FIG. 2, the satellite apparatus 1000 may include a plasma thruster generating apparatus 100 and a control unit 200.

In this case, the plasma thruster generating apparatus 100 includes a flexible optical fiber array 110, an electrode unit 130, a power supply unit 140, and a gas supply unit 120, And may be controlled by the control unit 200.

The flexible optical fiber array 110 includes a plurality of flexible optical fibers. That is, the flexible optical fiber array 110 means an optical fiber bundle composed of a plurality of flexible optical fibers.

Here, each of the flexible optical fibers may have a tube shape. In this case, the inner diameter of each flexible optical fiber may be 200 mu m and the outer diameter may be 300 mu m. However, this is only an example, and if the flexible optical fiber is small-sized, the flexible optical fiber can have various sizes.

In this case, the plurality of flexible optical fibers may be arranged in a line. The plurality of flexible optical fibers may be arranged so that the flexible optical fiber array 110 has a triangular prism shape.

The gas supply unit 120 supplies gas (or gas) to the flexible optical fiber array 110. To this end, the gas supply unit 120 is connected to one side of each flexible optical fiber, and can supply gas to each of the plurality of flexible optical fibers.

Here, the gas may include an inert gas such as helium (He), argon (Ar), or the like.

The gas supply unit 120 can supply helium or argon to a plurality of flexible optical fibers, respectively.

Specifically, the gas supply unit 120 may supply the same kind of gas to a plurality of flexible optical fibers of the flexible optical fiber array 110, or may supply another gas to at least one flexible optical fiber of the plurality of flexible optical fibers.

For example, if the flexible optical fiber array 110 comprises three flexible optical fibers, the gas supply 120 may provide helium to all three flexible optical fibers or argon for all three flexible optical fibers. As another example, the gas supply unit 120 may provide helium to two of the three flexible optical fibers and argon to the remaining one flexible optical fiber. As another example, the gas supply unit 120 may supply argon to two of the three flexible optical fibers and provide helium to the remaining one flexible optical fiber.

The electrode unit 130 can discharge an electric signal to the flexible optical fiber array 110 using a voltage supplied from the power supply unit 140. [

To this end, the electrode unit 130 surrounds a part of each of the plurality of flexible optical fibers. In this case, a copper tape or the like may be used for the electrode unit 130. [

The power supply unit 140 may be connected to the electrode unit 130 to apply an electrical signal to the electrode unit 130.

More specifically, when gas is supplied from the gas supply unit 120 to the flexible optical fiber array 110, the power supply unit 140 applies an electrical signal to the electrode unit 130, and the electrode unit 130 supplies the electrical signal to the electrode unit 130 from the power supply unit 140 The electric signal can be discharged into the flexible optical fiber array 110 using the electrical signal.

Here, the electrical signal may include a high voltage low current electrical signal. For example, when helium is supplied to the flexible optical fiber array 110, in order to generate plasma gas through helium, the power supply unit 140 generates a sine wave having a peak value of 15 kV (peak-to-peak voltage: 30 kV) to the electrode unit 130 and the electrode unit 130 can discharge an electric signal into the flexible optical fiber array 110 by using the corresponding voltage.

Accordingly, the inert gas supplied to the flexible optical fiber array 110 can be transferred to the plasma form by the electric signal discharged into the flexible optical fiber array 110 through the electrode unit 130.

In this case, since one end of each flexible optical fiber is connected to the gas supply unit 120 and the other end protrudes to the outside of the satellite apparatus 1000, plasma is emitted at the other end of the flexible optical fiber . Thus, the gas supplied to each of the flexible optical fibers is emitted at a high flow rate by the Bernoulli principle, so that the satellite device 1000 can obtain strong thrust.

The controller 200 controls the overall operation of the plasma thruster generator 100. For this purpose, the controller 200 may include a processor, a memory 130 for storing various data for controlling operations of the plasma thundersystem 100 and the satellite apparatus 1000, and the like.

In particular, the controller 200 can control the components of the plasma thruster generator 100 so that plasma can be generated and emitted.

The control unit 200 controls the gas supply unit 120 to supply the gas to each of the plurality of flexible optical fibers and controls the power supply unit 140 to apply the voltage to the electrode unit 130, The plasma can be generated and discharged from the plasma display panel.

That is, the control unit 200 controls the gas supply unit 120 to provide the gas to each of the plurality of flexible optical fibers, and controls the power supply unit 140 to supply a voltage to the electrode unit 130 when the gas is supplied to each flexible optical fiber. . In this case, the electrode unit 130 discharges an electric signal to each flexible optical fiber by the voltage supplied through the power supply unit 140, whereby the gas in each flexible optical fiber is transferred to the plasma state, 1000). ≪ / RTI >

The control unit 200 controls the gas supply unit 120 to supply the same kind of gas to the plurality of flexible optical fibers of the flexible optical fiber array 110 or to supply different gases only to at least one flexible optical fiber among the plurality of flexible optical fibers. can do.

2, the controller 200 for controlling the operation of the plasma thruster generator 100 is provided separately from the plasma thruster generator 100. However, the plasma thruster generator 100 is not limited to this, As shown in FIG. 3, may be included in the plasma thrush-generating apparatus 100. The plasma thruster generating apparatus 100 may be incorporated in the plasma thruster generating apparatus 100 as shown in FIG.

FIG. 3 is a block diagram illustrating a configuration of an apparatus 100 for generating a plasma thruster according to an embodiment of the present invention.

3, the plasma thruster generating apparatus 100 includes a flexible optical fiber array 110, a gas supply unit 120, an electrode unit 130, a power supply unit 140, and a control unit 150.

The flexible optical fiber array 110, the gas supply unit 120, the electrode unit 130, the power supply unit 140 and the control unit 150 shown in FIG. 3 correspond to the flexible optical fiber array 110, The gas supply unit 120, the electrode unit 130, the power supply unit 140, and the control unit 200, detailed description thereof will be omitted.

However, the controller 150 may be provided in the plasma thruster generator 100, unlike the controller 200 of FIG.

In detail, the controller 150 may be separately provided in the plasma thruster generator 100 to control the overall operation of the plasma thruster generator 100. In this case, when the plasma thrust generator 100 is mounted on a satellite device or other device, the controller 150 can control the plasma thrust generation operation by communicating with the main processor included in the mounted device.

As described above, the flexible optical fiber array 110 may include a plurality of flexible optical fibers.

At this time, the flexible optical fiber array 110 may include up to seven flexible optical fibers in order to maintain the flexibility of the optical fiber, that is, to allow a plurality of flexible optical fibers of the flexible optical fiber array 110 to be deformed together.

On the other hand, the number of flexible optical fibers can be set differently depending on the type of the thrust device, the use environment, the strength of the thrust, and the thrust generation range. However, as an embodiment for obtaining a strong thrust, an array including three flexible optical fibers can be constructed.

Hereinafter, a flexible optical fiber array 110 including three flexible optical fibers will be described as a reference.

Meanwhile, the plurality of flexible optical fibers may be arranged in various forms, and the shape in which the plasma is emitted from the plurality of flexible optical fibers may be different according to the arrangement of the plurality of flexible optical fibers. Further, depending on the type of the gas used to obtain the plasma, the shape in which the plasma is emitted from a plurality of flexible optical fibers may also be different.

Hereinafter, the shape in which the plasma is emitted from a plurality of flexible optical fibers according to the arrangement of the flexible optical fiber and the type of the gas will be described in more detail with reference to Figs. 4 to 10. Fig.

4 is a view showing an arrangement of a flexible optical fiber according to an embodiment of the present invention.

Referring to FIG. 4, the flexible optical fiber array 110 may include three flexible optical fibers 111, 112, and 113 arranged in parallel. In this case, the three flexible optical fibers 111, 112, and 113 may have the same length. Accordingly, the ends of the flexible optical fibers 111, 112, and 113 may be disposed outside the satellite device 1000 in parallel with each other.

In this case, the electrode unit 130 includes three electrodes 131, 132, and 133, and the electrodes 131, 132, and 133 may surround the respective flexible optical fibers 111, 112, and 113.

5 is a view showing an arrangement of a flexible optical fiber according to another embodiment of the present invention.

Referring to FIG. 5, two flexible optical fibers 111 and 113 disposed at the edges of the three flexible optical fibers included in the flexible optical fiber array 110 have the same length, one flexible optical fiber 112 disposed at the center, May be longer than the remaining flexible optical fibers 111 and 113. Accordingly, the end of the optical fiber 112 disposed at the center among the flexible optical fibers 111, 112, and 113 may protrude from the ends of the other flexible optical fibers 111 and 113.

In this case, the length of the center of the optical fiber 112 protruding from the other flexible optical fibers 111 and 113 outside the satellite apparatus 1000 may have various values.

For example, when the satellite apparatus 1000 is implemented as a nano-satellite (10 to 1 kg), the centrally located optical fiber 112 is protruded by 0.5 mm, 1 mm, or 2 mm from the other flexible optical fibers 111 and 113 . However, this is only an example, and the length difference between the flexible optical fiber disposed at the center and the other flexible optical fiber may have various values depending on the type of the satellite apparatus 1000 and the like.

In this case, the electrode unit 130 includes three electrodes 131, 132, and 133, and the electrodes 131, 132, and 133 may surround the respective flexible optical fibers 111, 112, and 113. FIG. Fig.

Referring to FIG. 6, two flexible optical fibers 111 and 113 disposed at the edges of the three flexible optical fibers included in the flexible optical fiber array 110 have the same length, one flexible optical fiber 112 disposed at the center, May be shorter than the remaining flexible optical fibers. Accordingly, the end of the flexible optical fiber 112 disposed at the center among the flexible optical fibers 111, 112, and 113 may be recessed from the end of the other optical fibers 111 and 113. [

In this case, outside of the satellite apparatus 1000, the length of the center of the optical fiber 112, which is recessed compared to other flexible optical fibers 111 and 113, may have various values.

For example, when the satellite apparatus 1000 is implemented as a nano-satellite (10 to 1 kg), the centrally disposed optical fiber 112 is recessed by 0.5 mm, 1 mm, or 2 mm from the other flexible optical fibers 111 and 113 . However, this is merely an example, and the difference in length between the centrally located flexible optical fiber and the other flexible optical fiber may have various values depending on the type of the satellite apparatus 1000

In this case, the electrode unit 130 includes three electrodes 131, 132, and 133, and the electrodes 131, 132, and 133 may surround the respective flexible optical fibers 111, 112, and 113.

7 is a view showing an arrangement of a flexible optical fiber according to another embodiment of the present invention.

Referring to FIG. 7, the flexible optical fiber array 110 may include three flexible optical fibers 111, 112, and 113 arranged parallel to each other to correspond to respective vertexes of a triangle.

In this case, the three flexible optical fibers 111, 112, and 113 may have the same length. Accordingly, the ends of the flexible optical fibers 111, 112, and 113 can be disposed on the same plane outside the satellite apparatus 1000.

As described above, according to various embodiments of the present invention, the flexible optical fiber can be arranged in various forms, as shown in FIGS.

Further, as described above, the same kind of gas may be supplied to a plurality of flexible optical fibers of the flexible optical fiber array 110, or a different gas may be supplied to at least one flexible optical fiber of the plurality of flexible optical fibers.

For example, only one kind of gas of helium or argon can be supplied to each of the flexible optical fibers 111, 112 and 113 (first channel). Argon is supplied to the first and third flexible optical fibers 111 and 113 and argon is supplied to the second flexible optical fiber 112 and argon is supplied to the first and third flexible optical fibers 112 and 113. [ 111, 113 may be supplied independently of the flexible optical fiber at the same time (second channel), such as when helium is supplied, or the like.

Hereinafter, the shape in which plasma is emitted from a plurality of flexible optical fibers according to the arrangement of the flexible optical fiber and the type of the gas will be described in more detail with reference to Figs. 8 to 11. Fig.

8 illustrates a configuration in which a plasma is emitted from a flexible optical fiber array when a flexible optical fiber is disposed as shown in FIGS. 4 to 7 and only helium (He) is supplied to the flexible optical fiber array according to an embodiment of the present invention. FIG.

8, Case I shows the shape of plasma emitted from the flexible optical fibers 111, 112 and 113 when helium (He) is supplied to the three flexible optical fibers 111, 112 and 113 arranged in parallel.

In case IIA, when the length of the second flexible optical fiber 112 disposed at the center is 0.5 mm shorter than the length of the first and third flexible optical fibers 111 and 113 disposed at the edge, the three flexible optical fibers 111, 112, In the case IIB, the second flexible optical fiber 112 disposed at the center is the first and third flexible optical fibers (100, 112 and 113 when helium (He) is supplied to the three flexible optical fibers 111, 112 and 113 when the length of the second optical fibers 111 and 113 is shorter than the length of the second optical fibers 111 and 113, Helium He is supplied to the three flexible optical fibers 111, 112 and 113 when the length of the flexible optical fiber 112 is shorter than the length of the first and third flexible optical fibers 111 and 113 disposed at the edge, If, illustrating the shape of the plasma emitted from the flexible optical fiber (111 112 113).

In contrast to Case II, Case IIIA is a case where the length of the second flexible optical fiber 112 disposed at the center is 0.5 mm longer than the length of the first and third flexible optical fibers 111 and 113 disposed at the extreme positions, and the three flexible optical fibers 111, 112, (Case 111B) shows the shape of the plasma emitted from the flexible optical fibers 111, 112 and 113 when Helium (He) is supplied to the first and second flexible optical fibers 112, 112 and 113 when helium (He) is supplied to three flexible optical fibers 111, 112 and 113 when the lengths of the three flexible optical fibers 111 and 113 are 1 mm longer than the length of the flexible optical fibers 111 and 113, Helium (He) is applied to the three flexible optical fibers 111, 112 and 113 when the length of the second flexible optical fiber 112 is 2 mm longer than the length of the first and third flexible optical fibers 111 and 113 The shape of the plasma emitted from the flexible optical fibers 111, 112, and 113 is shown. ,

Finally, Case IV shows the shape of the plasma emitted from the flexible optical fibers 111, 112 and 113 when helium (He) is supplied to the three flexible optical fibers 111, 112 and 113 arranged in parallel with each other to correspond to the respective vertexes of the triangle.

Referring to FIG. 8, in the case of Case IIIA, a plasma plume emitted from the first and third flexible optical fibers 111 and 113 at the edges is coupled to a plasma plume emitted from the central second flexible optical fiber 112 It can be seen that the plume of the plasma generated by the coupling phenomenon or the jet-to-jet interaction is thicker and farther than that of the case I case. That is, in the case of Case IIIA (that is, when the length of the second flexible optical fiber 112 disposed at the center is 0.5 mm longer than the length of the first and third flexible optical fibers 111 and 113 disposed at the edges) The particles can stretch out, which can be accompanied by strong plasma emission and high thrust.

Accordingly, according to an embodiment of the present invention, when the satellite device 1000 obtains the highest thrust by using helium, the flexible optical fiber can be arranged as Case IIIA.

9 illustrates a configuration in which a plasma is emitted from a flexible optical fiber array when a flexible optical fiber is disposed as shown in FIGS. 4 to 7 and only argon (Ar) is supplied to the flexible optical fiber array according to an embodiment of the present invention. FIG. Here, the arrangement of the flexible optical fiber arrays 110 from Case I to Case IV is as described above with reference to FIG. 8, and a duplicate description thereof will be omitted.

9, when argon (Ar) alone is supplied to the flexible optical fiber array 110, the case (Case I) in which the flexible optical fibers 111, 112 and 113 are arranged in parallel (Case I) and the length of the second flexible optical fiber 112 (Case IIIA), which is 0.5 mm longer than the length of the first and third flexible optical fibers 111 and 113 disposed at the edges, the plasma discharge particles extend most distantly.

Accordingly, according to an embodiment of the present invention, when the highest power is to be obtained in the satellite apparatus 1000 using argon, the flexible optical fiber can be arranged as Case I or Case IIIA.

FIG. 10 is a schematic view illustrating a case where a flexible optical fiber is disposed as shown in FIGS. 4 to 6 and helium (He) and argon (Ar) are supplied to a flexible optical fiber array according to an embodiment of the present invention. In the flexible optical fiber array, Fig.

Specifically, in Case A, three flexible optical fibers 111, 112 and 113 are arranged in parallel. In Case VB, the length of the second flexible optical fiber 112 disposed at the center is equal to the length of the first and third flexible optical fibers 111 and 113 The length of the second flexible optical fiber 112 located at the center is 0.5 mm longer than the length of the first and third flexible optical fibers 111 and 113 located at the edge.

In addition, helium (He) and argon (Ar) are supplied to different flexible optical fiber arrays 110 (Case VA, Case VB and Case VB). In the left three Case VA, Case VB and Case VB, helium Case 2B is a case where argon Ar is supplied to the first and third flexible optical fibers 111 and 113 disposed on both sides of the second flexible optical fiber 112, Case VC is supplied to the second flexible optical fiber 112 in which argon (Ar) is disposed at the center and helium (He) is supplied to the first and third flexible optical fibers 111 and 113 disposed on both sides of the second flexible optical fiber 112 .

10, when helium (He) is supplied to the second flexible optical fiber 112 and argon (Ar) is supplied to the first and third flexible optical fibers 111 and 113, the second flexible optical fiber 112 are shorter than the lengths of the first and third flexible optical fibers 111 and 113 disposed at the edges (Case VB). In this case, the plasma discharge particles extend most distantly.

Thus, according to an embodiment of the present invention, when helium (He) is supplied to the second flexible optical fiber 112 and argon (Ar) is supplied to the first and third flexible optical fibers 111 and 113, 1000), Case VB can be used to obtain the highest thrust.

On the other hand, when argon (Ar) is supplied to the second flexible optical fiber 112, helium He is supplied to the first and third flexible optical fibers 111 and 113, and the three flexible optical fibers 111, 112 and 113 are arranged in parallel (Case VA), the plasma discharge particles extend most far away.

Thus, according to an embodiment of the present invention, when argon (Ar) is supplied to the second flexible optical fiber 112 and helium (He) is supplied to the first and third flexible optical fibers 111 and 113, 1000), Case VA can be used to obtain the highest thrust.

As described above, according to the various embodiments of the present invention, in order to obtain high thrust in the satellite apparatus 1000, flexible optical fibers arranged in different forms according to the manner in which gas is supplied to the flexible optical fiber may be used.

11 and 12 are views for explaining a configuration of a gas supply unit for providing a gas to a flexible optical fiber array according to an embodiment of the present invention.

Here, the flexible optical fiber array 110, the gas supply unit 120, the electrode unit 130, and the power supply unit 140 shown in Figs. 11 and 12 include the flexible optical fiber array 110 shown in Figs. 2 and 3, The gas supply unit 120, the electrode unit 130, and the power supply unit 140, detailed description thereof will be omitted.

Referring to FIGS. 11 and 12, the gas supply unit 120 may include a mass flow controller (MFC) 121 and an inert gas reservoir 122.

The inert gas reservoir 122 stores an inert gas. Herein, the inert gas may include helium (He) and argon (Ar). However, this is only an example, and the inert gas may further include neon (Ne), krypton (Kr), xenon (Xe), and radon (Rn).

On the other hand, when two or more inert gases are stored in the inert gas reservoir 122, each inert gas is separated without being mixed with each other and stored in the inert gas reservoir 122.

The mass flow controller (MFC) 121 is a device for measuring and controlling the flow of gas (flow rate), and measures the flow of gas supplied from the inert gas reservoir 122 to each of the flexible optical fibers 111, 112 and 113, The amount of gas supplied to the first, second, third,

Accordingly, the gas supply unit 120 can supply helium or argon to the plurality of flexible optical fibers 111, 112, and 113, respectively.

That is, the controller 150 or 200 may control the mass flow controller 121 such that the gas is supplied to the respective flexible optical fibers 111, 112, and 113.

Specifically, the control unit 150 or 200 controls the gas supply unit 120 to measure the flow of gas supplied to the flexible optical fibers 111, 112, and 113 to control the amount of gas supplied to the flexible optical fibers 111, 112, and 113 have.

Meanwhile, when a plurality of flexible optical fibers are provided with different gases, the controller 150 or 200 may control the mass flow controller (MFC) 121 such that a gas is independently supplied to each flexible optical fiber.

As shown in FIG. 12, the gas supply unit 120 may further include an iodine reservoir 123 for storing iodine.

In this case, the gas supply unit 120 includes a mass flow controller (MFC) 121-1 for providing the inert gas stored in the inert gas reservoir 122 to the flexible optical fibers 111, 112 and 113, and an iodine storage The mass flow controller (MFC) 121-1 and 121-2 may include a mass flow controller (MFC) 121-2 for providing the mass flow controller (I) I to the flexible optical fibers 111, 112, ). ≪ / RTI >

Accordingly, the gas supply unit 120 can supply at least one of helium and argon and iodine (I) to the plurality of flexible optical fibers 111, 112, and 113, respectively.

That is, the controller 150 or 200 controls the mass flow controller (MFC) (or the mass flow controller) so as to supply the inert gas to each of the plurality of flexible optical fibers 111, 112 and 113 while supplying the iodine I to each of the plurality of flexible optical fibers 111, 112 and 113 121-1, 121-2.

When the iodine I is additionally supplied to the flexible optical fibers 111, 112 and 113 as described above, stronger plasma is emitted from the flexible optical fibers 111, 112 and 113 than when the iodine I is not supplied, High thrust can be obtained.

FIG. 13 is a block diagram for explaining the configuration of the plasma thrust generator 100 according to an embodiment of the present invention.

Referring to FIG. 13, the plasma thruster generating apparatus 100 includes a flexible optical fiber array 110, an electrode unit 130, a power supply unit 140, a gas supply unit 120, a control unit 150, and a driving unit 160.

13, the remaining components except for the driving unit 160, that is, the flexible optical fiber array 110, the electrode unit 130, the power supply unit 140, the gas supply unit 120 and the control unit 150, The detailed description thereof will be omitted.

The driving unit 160 bends the flexible optical fiber array 100. 14, the driving unit 160 may include a driving motor 161, a connecting unit 162, a hinge member 163, and a fixing unit 164.

The fixing portion 164 fixes the flexible optical fibers 111, 112 and 113 of the flexible optical fiber array 110 so that each of the flexible optical fibers can simultaneously move in the same direction.

The hinge member 163 interconnects the connecting portion 162 and the fixing portion 164.

The connecting portion 162 converts the rotational force generated by the driving motor 161 into linear motion so that the fixing portion 164 connected to the connecting portion 162 can linearly move through the hinge member 163.

Accordingly, the flexible optical fiber array 110 can be bent in a direction in which the fixing portion 164 moves.

For example, the flexible optical fiber array 110 is bent to the left or right when the fixing portion 164 moves to the left or right, and is bent upward or downward when the fixing portion 164 moves upward or downward .

Meanwhile, the controller 150 can control the direction of movement of the satellite apparatus 1000 through the driving unit 160.

Specifically, the plasma should be emitted in the direction opposite to the direction in which the satellite apparatus 1000 is to obtain thrust. Therefore, the control unit 150 may control the driving unit 160 to bend the flexible optical fiber array 110 in the direction opposite to the direction in which thrust is to be obtained.

Hereinafter, a method for controlling the movement of the satellite apparatus will be described with reference to FIG.

For convenience of explanation, FIG. 15 shows a cross-sectional view of the satellite apparatus viewed from above the satellite apparatus 1000. FIG.

15A, when moving the satellite apparatus 1000 in the traveling direction 10, the controller 150 controls the driving unit 160 to prevent the flexible optical fiber array 110 from bending, To cause the flexible optical fiber array 110 to emit plasma in a direction opposite to the direction 10.

15 (b), when the direction of the satellite device 1000 is changed to the right diagonal direction, the controller 150 controls the flexible optical fiber array 100 to move in the traveling direction 10 of the satellite device 1000, The driving unit 160 can be controlled to bend in the diagonal direction of the left side.

15 (c), when the flexible optical fiber array 100 is moved in the traveling direction 10 of the satellite apparatus 1000, the control unit 150 determines that the satellite apparatus 1000 is traveling in the left diagonal direction, The driving unit 160 may be controlled to bend in the right diagonal direction of FIG.

Although not shown in FIG. 15, when the thrust is to be obtained in the upward or downward direction of the satellite apparatus, the controller 150 controls the flexible optical fiber array 100 in the direction opposite to the direction in which the flexible optical fiber array 100 obtains the thrust (I.e., the downward direction or upward direction of the satellite apparatus).

In the meantime, although the plasma thrust generating apparatus is applied to a satellite apparatus as an embodiment of the present invention, the plasma thrust generating apparatus may be applied to equipment requiring thrust, such as a space suit.

16 is a flowchart illustrating a thrust generating method of the plasma thrust generating apparatus according to an embodiment of the present invention.

First, a gas is supplied to an optical fiber array composed of a plurality of flexible optical fibers (S1601).

Thereafter, a voltage is applied to an electrode surrounding a part of each of the plurality of flexible optical fibers so that plasma is generated and emitted in the plurality of flexible optical fibers (S1602).

Here, the flexible optical fiber array may include three flexible optical fibers arranged in parallel. In this case, the two flexible optical fibers disposed at the edges among the three flexible optical fibers have the same length, and one flexible optical fiber disposed at the center may be longer than the remaining flexible optical fibers.

Further, the flexible optical fiber array may include three flexible optical fibers arranged in parallel. In this case, the two flexible optical fibers disposed at the edges of the three flexible optical fibers are equal in length to each other, and one flexible optical fiber disposed at the center may be shorter than the remaining flexible optical fibers.

In addition, the flexible optical fiber array may include three flexible optical fibers arranged in parallel to each other so as to correspond to each vertex of the triangle.

On the other hand, each of the flexible optical fibers may be in the form of a tube. In this case, in step S1601, helium or argon may be supplied to each of the plurality of flexible optical fibers.

Further, each of the flexible optical fibers may be in the form of a tube. In this case, S1601 can supply at least one of helium and argon and iodine to the plurality of flexible optical fibers, respectively.

Further, the optical fiber array can be bent in a direction opposite to the direction in which thrust is to be obtained.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

100: Plasma Thrust Generator 110: Flexible Optical Fiber Array
1000: Satellite device

Claims (12)

A plasma thrust generating apparatus comprising:
A flexible optical fiber array including a plurality of flexible optical fibers;
A gas supply part for supplying an inert gas to the flexible optical fiber array;
An electrode portion surrounding a portion of each of the plurality of flexible optical fibers;
A power supply unit; And
A controller for controlling the gas supply unit to provide the inert gas to each of the plurality of flexible optical fibers and controlling the power supply unit to apply a voltage to the electrode unit so that plasma is generated and discharged in the plurality of flexible optical fibers; And the plasma thrust generating device.
The method according to claim 1,
The flexible optical fiber array includes:
Comprising three flexible fibers arranged in parallel,
Wherein the two flexible optical fibers disposed at the edges of the three flexible optical fibers have the same length and the one flexible optical fiber disposed at the center is longer than the remaining flexible optical fibers.
The method according to claim 1,
The flexible optical fiber array includes:
Comprising three flexible fibers arranged in parallel,
Wherein the two flexible optical fibers disposed at the edges of the three flexible optical fibers have the same length and the one flexible optical fiber disposed at the center is shorter than the remaining flexible optical fibers.
The method according to claim 1,
The flexible optical fiber array includes:
And three flexible optical fibers arranged parallel to each other so as to correspond to the respective vertexes of the triangle.
The method according to claim 1,
Each of the flexible optical fibers is in the form of a tube,
Wherein the gas supply unit supplies the inert gas to the plurality of flexible optical fibers, respectively.
The method according to claim 1,
Each of the flexible optical fibers is in the form of a tube,
Wherein the gas supply unit supplies the inert gas and iodine to the plurality of flexible optical fibers, respectively.
The method according to any one of claims 1 to 6,
And a driving unit for bending the flexible optical fiber array,
Wherein the controller controls the driving unit to bend the flexible optical fiber array in a direction opposite to a direction in which thrust is to be obtained.
A thrust generating method of a plasma thrust generator,
Providing an inert gas to a flexible optical fiber array made up of a plurality of flexible optical fibers; And
And applying a voltage to an electrode surrounding a part of each of the plurality of flexible optical fibers so that a plasma is generated and discharged in the plurality of flexible optical fibers.
9. The method of claim 8,
The flexible optical fiber array includes:
Comprising three flexible fibers arranged in parallel,
Wherein the two flexible optical fibers disposed at the edges of the three flexible optical fibers have the same length and the one flexible optical fiber disposed at the center is longer than the remaining flexible optical fibers.
10. The method according to claim 8 or 9,
And bending the flexible optical fiber array in a direction opposite to a direction in which thrust is to be obtained.
In a satellite device,
A plasma thrust generating device for generating a thrust for moving the satellite device;
And a control unit for controlling an operation of the plasma thruster generating apparatus,
Wherein the plasma thrust generator comprises:
A flexible optical fiber array including a plurality of flexible optical fibers;
A gas supply part for supplying an inert gas;
An electrode unit surrounding each of the plurality of flexible optical fibers; And
And a power supply unit,
Wherein the control unit controls the gas supply unit to supply the inert gas to each of the plurality of flexible optical fibers and controls the power supply unit to apply a voltage to the electrode unit so that plasma is generated and discharged in the plurality of flexible optical fibers And the satellite device.
12. The method of claim 11,
The flexible optical fiber array includes:
Comprising three flexible fibers arranged in parallel,
Wherein the two flexible optical fibers disposed at the edges of the three flexible optical fibers have the same length and the one flexible optical fiber disposed at the center is longer than the remaining flexible optical fibers.



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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111120233A (en) * 2019-12-10 2020-05-08 南京理工大学 Optical fiber self-consumption type laser micro-propulsion system
KR20200070886A (en) 2018-12-10 2020-06-18 조선대학교산학협력단 Thrusters for spacecraft
KR102623630B1 (en) 2022-12-09 2024-01-11 서울대학교산학협력단 Field Emission Thrust System
KR102623629B1 (en) 2022-12-09 2024-01-11 서울대학교산학협력단 Field Emission Thruster Pre-wetting Device

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Publication number Priority date Publication date Assignee Title
JP2543786Y2 (en) * 1991-09-09 1997-08-13 石川島播磨重工業株式会社 Arc jet thruster
JP2003148247A (en) * 2001-11-12 2003-05-21 National Aerospace Laboratory Of Japan Laser thruster system by wire transmission system
JP2009085206A (en) * 2007-09-13 2009-04-23 Tokyo Metropolitan Univ Charged particle emission device and ion engine
KR20140101235A (en) * 2013-02-08 2014-08-19 한국기계연구원 Jet type plasma generator
KR101644293B1 (en) * 2015-12-31 2016-08-01 한국항공우주연구원 Launcher stage transport and erection unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2543786Y2 (en) * 1991-09-09 1997-08-13 石川島播磨重工業株式会社 Arc jet thruster
JP2003148247A (en) * 2001-11-12 2003-05-21 National Aerospace Laboratory Of Japan Laser thruster system by wire transmission system
JP2009085206A (en) * 2007-09-13 2009-04-23 Tokyo Metropolitan Univ Charged particle emission device and ion engine
KR20140101235A (en) * 2013-02-08 2014-08-19 한국기계연구원 Jet type plasma generator
KR101644293B1 (en) * 2015-12-31 2016-08-01 한국항공우주연구원 Launcher stage transport and erection unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200070886A (en) 2018-12-10 2020-06-18 조선대학교산학협력단 Thrusters for spacecraft
CN111120233A (en) * 2019-12-10 2020-05-08 南京理工大学 Optical fiber self-consumption type laser micro-propulsion system
KR102623630B1 (en) 2022-12-09 2024-01-11 서울대학교산학협력단 Field Emission Thrust System
KR102623629B1 (en) 2022-12-09 2024-01-11 서울대학교산학협력단 Field Emission Thruster Pre-wetting Device

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