KR20160121197A - Flying object opration system - Google Patents
Flying object opration system Download PDFInfo
- Publication number
- KR20160121197A KR20160121197A KR1020150050878A KR20150050878A KR20160121197A KR 20160121197 A KR20160121197 A KR 20160121197A KR 1020150050878 A KR1020150050878 A KR 1020150050878A KR 20150050878 A KR20150050878 A KR 20150050878A KR 20160121197 A KR20160121197 A KR 20160121197A
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- KR
- South Korea
- Prior art keywords
- wire
- unit
- ground
- wires
- air
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/40—Balloons
- B64B1/50—Captive balloons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/40—Balloons
- B64B1/50—Captive balloons
- B64B1/54—Captive balloons connecting two or more balloons in superimposed relationship
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/58—Arrangements or construction of gas-bags; Filling arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/66—Mooring attachments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F3/00—Ground installations specially adapted for captive aircraft
Abstract
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a flying body, and more particularly, to a flying body operating system that is connected to the ground and is supplied with power from the ground and is controlled to stay at a predetermined position.
In general, a flying object is an object flying in the air, and can be largely divided into self-powered vehicles such as airplanes and non-powered vehicles such as airships and gliders.
A typical example of a non-powered aircraft is an airplane that injects a lighter gas than the air into the air bag (气囊) to obtain most of the lift from the gas.
The characteristics of these airships, that is, the stability of airship in the air, the flexibility and economy, have been widely used in advertisement, sports broadcasting, travel, transportation industry and observation fields.
Recently, along with the development of the information communication field, researches for utilizing the stratosphere that is advantageous for communication and observation are actively carried out. Since the stratosphere is formed from about 8 to 10 km above the earth and about 50 to 56 km long, the weather is very stable compared to the troposphere. Various techniques are being developed to utilize the meteorological phenomenon. Airships are being studied together.
In other words, since the density of air in the stratosphere is about one-quarter of that of sea level, the drag force on the airship is small, the propulsion energy required to maintain the position is not so large and the altitude is higher than that of the satellite in the geostationary orbit of 3,6000 km The 30 km stratosphere has advantages such as low transmission delay, low transmission loss, wide area high speed mobile communication / high capacity high speed communication / fire detection.
In addition, the stratosphere can acquire a wider range of images than aircraft, and can be very useful in the field of earth observation.
In this way, airships must perform at least 2km or more from the ground to perform various missions even if they do not reach the stratosphere or the stratosphere. In such high altitudes, it is a harsh environment with a density and temperature which is significantly lower than the ground. Stable power is essential for airship operation.
In order to carry out various tasks, more stable electric power is required for the airship. In order to supply the stable power, the connection with the ground is the most reliable method.
However, due to the nature of the airship which can not be fixed at a certain position, it is not easy to supply electric power through connection with the ground, and it is very costly to realize this.
As a result of this study, the applicant of the present invention has provided a flight unit capable of stably supplying power through a separate wire unit by separating a power line from Korean Patent No. 10-1429567 (Prior Art 1).
However, in the prior art 1, since a plurality of ground units must be installed on the ground in order to fix a plurality of wire units, there is a problem that the installation cost due to site acquisition increases, and installation construction becomes complicated.
In order to reliably perform various tasks such as communication and observation using such a flight body, it is essential to stably maintain the position of the flight body within a predetermined range.
As a result of this study, the applicant of the present invention has provided a flight unit capable of stably controlling the position of a flying object on a high altitude through a horizontal wing and a vertical wing in Korean Patent No. 10-1388491 (Prior Art 2).
At this time, the above-mentioned air vehicle can be effectively used for military purposes because it can be used for observation and communication by operating a small air vehicle at low altitude on high altitude.
However, in the prior art 2, because the position control of the flying object is performed through the horizontal wing and the vertical wing, the positional exposure through the radar is easy due to the vertical wing, which poses a problem of security weakness in use as a military facility.
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a flight operation system that can separate a wire unit while using one ground unit.
It is another object of the present invention to provide a flight operation system having a stealth function by significantly reducing a detection rate on a radar, while allowing a flight to stably stay within a specific range and performing its mission.
According to an aspect of the present invention, there is provided a system for operating a flying object floating from the ground, comprising: at least two airborne flying objects; One ground unit installed on the ground; And a wire unit connecting between the airship and the ground unit, wherein the wire unit comprises: a wire having one end connected to the ground unit and the other end connected to one of the flying objects; A wire having one end connected to the ground unit and the other end connected to one of the other flying objects; And a wire connecting between the flying objects.
The present invention also provides a system for operating a floating body from above ground, comprising: a flying body that floats in the air; One ground unit installed on the ground; And a wire unit connecting between the airship and the ground unit, wherein the wire unit comprises at least two wires, wherein the wires comprise wires of different lengths .
At this time, at least one of the wires other than at least the longest wire among the wires may further include a friction unit for generating frictional force.
A plurality of the friction units may be provided on the wire.
The friction unit may be composed of frictional units of different sizes so that different drag forces are generated depending on the length of the wire to be installed.
And at least the shortest wire among the wires may be formed of a plurality of high-strength fiber materials.
Further, the wire may be configured to include a power line for power supply.
The ground unit or the air vehicle may be provided with a guide unit for fixing the ends of the wires so as to be disposed in a spaced apart direction.
Further, the guide unit may include: a fixing plate fixed to the ground unit or the lower end of the air vehicle; A rotating plate which is rotated in a horizontal direction with respect to the fixed plate; A support plate installed upright in a direction perpendicular to the rotation plate; And a plurality of supports connected to the support plate by hinges and rotatably installed in the vertical direction and extending in mutually spaced directions to be coupled with the wires.
According to another aspect of the present invention, there is provided a system for operating a flying object floating from the ground, comprising: a flying object supported in the air; One ground unit installed on the ground; And a wire unit connecting between the airship and the ground unit, wherein the airship body is formed to extend in a direction inclined upward or downward from a side surface of the airship body, And a tilt blade that adjusts the direction of the drag with respect to the wind.
The inclined riff may be formed to be inclined upward from both left and right sides of the air vehicle.
In addition, the inclined ripples may be formed to be inclined downward from both left and right sides of the air vehicle.
The present invention also provides a system for operating a floating body from above ground, comprising: a flying body that floats in the air; One ground unit installed on the ground; And a wire unit connecting between the airship and the ground unit, wherein the airship body is formed to extend in a horizontal direction from a side surface of the airship body and is rotatably provided with respect to a side surface of the airship body, And a horizontal wing to control the direction of the aircraft.
At this time, the flight body may further include an adjustment wire that rotates the flying body to position the horizontal blade in an inclined shape.
And the flight body comprises: an adjustment wire including a first adjustment wire and a second adjustment wire respectively connected to the left and right sides of the airplane; And an adjusting unit for adjusting the lengths of the first adjusting wire and the second adjusting wire.
The following effects can be expected in the airship operating system according to the present invention as described above.
That is, in the present invention, a plurality of wire units for connecting the air vehicle and the ground unit are used to prevent a short circuit due to interference between the wire units, while using only one ground unit, So that the installation of the flight operation system can be facilitated.
Further, the present invention has an effect of providing a flight operation system optimized for military purposes by controlling the radar to detect a flying object stably within a specific range, and by providing a stealth function by significantly reducing the detection rate of the radar.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of a flight operating system according to a specific embodiment of the present invention. FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a flight operation system,
3 is a block diagram showing a third embodiment of a flight operation system according to a specific embodiment of the present invention.
4 is a detailed block diagram showing the configuration of a guide unit applied to a flight operation system according to a specific embodiment of the present invention.
5 is a block diagram showing a first embodiment of a flight operation system according to another embodiment of the present invention.
FIG. 6 is a block diagram showing a second embodiment of a flight operation system according to another embodiment of the present invention; FIG.
7 is a schematic view showing a principle of generation of position control drag of a flight operating system according to another embodiment of the present invention.
FIG. 8 is a block diagram showing a third embodiment of a flight operation system according to another embodiment of the present invention. FIG.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a flight operation system according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
The airborne vehicle operation system according to the specific embodiment of the present invention supports the airborne vehicle through one ground unit. Various embodiments of the present invention will now be described.
FIG. 1 is a block diagram showing a first embodiment of a flying object operating system according to a specific embodiment of the present invention. FIG. 2 is a block diagram showing a second embodiment of a flight object operating system according to a specific embodiment of the present invention. FIG. 3 is a configuration diagram showing a third embodiment of a flying object operating system according to a specific embodiment of the present invention, FIG. 4 is a view showing a guide unit applied to a flying object operating system according to a specific embodiment of the present invention. And Fig.
First, as shown in Fig. 1, a first embodiment of the specific embodiment of the present invention includes a
The
A
The
Hereinafter, for convenience of explanation, the
The
The
Meanwhile, a
A
In addition, the
It is important to fix the position of the
At this time, the
The
That is, the
Accordingly, the
Although FIG. 1 illustrates the air vehicle operation system including two
Two wires are connected to the
The detailed structure of the guide unit will be described in detail below.
On the other hand, disposing the wires apart from each other can prevent a short circuit between the wires for power supply. As a result, the possibility of electric leakage is low because the wires are sufficiently spaced apart from each other, so that a large voltage (a high voltage of several hundreds to tens of thousands of volts or more) can be applied to each wire. This means that the thickness of the wire can be made relatively small as a result.
As shown in FIG. 2, the second embodiment of the aircraft operation system according to the embodiment of the present invention includes one
At this time, the wires are configured to have different lengths. That is, as shown in FIG. 2, when a wire unit is composed of two wires, the wire unit is composed of a
As a result, a tension greater than that of the
Therefore, as described above, high-voltage power can be supplied through the wires without risk of occurrence of a short circuit between the wires.
Meanwhile, the wire unit may include two or more wires, and may have different lengths to supply three-phase, five-phase, or more power types with each wire being spaced apart.
In other words, power can be supplied to the
Alternatively, when the wire unit is composed of three wires, each of the wires may include two power supply lines and a ground line for supplying the direct current or alternating current power separately to each of the wires, May be separately included in the wires.
When the wire unit is composed of three wires, each of the wires may include two power lines for supplying the DC or AC power, and a communication line for communication with the ground.
Of course, the wire unit may consist of five wires, each of which may include five power sources, and may include more wires.
As described above, when the number of the wire units is increased, the wires necessary for power supply and communication are separately arranged for each wire unit, thereby making it possible to utilize the wire unit stably and economically.
The
For this, the
When the short wire has a weight to tensile strength of 900% or more, for example, a short wire having a diameter of 0.5 mm is extended to 20 km, the shot wire provides a tensile strength of about 45 kg to 75 kg to the
Although not shown, the wire unit may be provided with a current sensor unit. The plurality of current sensors are intermittently provided along the longitudinal direction of the wire unit to detect a short circuit of the wire unit. When a wire unit having a very long length is disconnected, Make it easy to find out.
It is preferable that at least a part of the wire unit adjacent to the ground unit is provided with a reinforcing cover for reinforcing the strength of the wire unit or the thickness of the wire unit is increased. This is to prevent damage of the wire unit due to collision with a bird or the like.
In order to secure the end portions of the wires, guide
3, the third embodiment of the air vehicle operation system according to the embodiment of the present invention may further include a
That is, the third embodiment of the air vehicle operation system according to the specific embodiment of the present invention further comprises the
At this time, the
On the other hand, a plurality of the friction units may be provided on the wire.
When the wire unit includes three or more wires, friction units of different sizes may be provided on the wires to generate different drag forces.
Hereinafter, the specific structure of the
4, the
A fixing
On the
The
At this time, a plurality of
In the following, another embodiment of the present invention relating to a position control method of a flying object will be described.
Another embodiment of the present invention relates to a flight control system having a stealth function and capable of controlling the position of the aircraft, and is capable of controlling the position of the aircraft in vertical and horizontal positions without the vertical vanes, System.
FIG. 5 is a configuration diagram showing a first embodiment of a flight operation system according to another embodiment of the present invention, FIG. 6 is a configuration diagram showing a second embodiment of a flight operation system according to another embodiment of the present invention FIG. 7 is a schematic view showing a principle of generating a position control drag force of a flight operation system according to another embodiment of the present invention, and FIG. 8 is a view showing a third embodiment of a flight operation system according to another embodiment of the present invention FIG.
As shown in FIG. 5, a flying
The upwardly
The upward
7, the sum of the drag force a generated by the rotation of the left upward inclined wing and the drag force beta generated by the rotation of the right upward inclination wedge occurs in the
Since the drag force α and the drag force β are changed by the rotation direction and the rotation angle of the right upward slope and the leftward upward slope, respectively, the drag force in all directions is generated from the sum of the drag force α and the drag force β, Can be moved in all directions.
Next, as shown in FIG. 6, the
The downwardly
The downwardly
The principle of drag generation of the
8, the
The
At this time, the
Meanwhile, the
The
As the
Thus, the
In order to control the position of the
That is, the position calculation of the
Alternatively, an observing section composed of a camera for observing the terrain and the ground on the ground is installed. It is also possible to calculate the position of the
At this time, by further including the radar measuring unit or the laser measuring unit, the distance from the ground is calculated and used together with the observing result of the observing unit, it is possible to calculate the position value with higher accuracy.
It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.
The present invention relates to a flight operation system that is connected to a ground and is supplied with electric power from the ground and is controlled to stay at a predetermined position. According to the present invention, when a flying object is positioned above an elevation, The plurality of wire units connecting the air unit and the ground unit can be spaced apart from each other so that a short circuit due to interference between the wire units can be prevented.
100: air vehicle 120:
130: Upward slope 135: Downward slope
140: Rotating socket 150: Solar panel
170: wire guide 180: horizontal wing
200:
211: fixed plate 212: rotary plate
213: support plate 214: hinge
215: first support bar 216: second support bar
300: wire unit 310: first wire
320: second wire 330: third wire
340: short wire 350: long wire
360: Friction unit 400: Single wire
510: first adjustment wire 520: second adjustment wire
530:
Claims (15)
Two or more airborne vehicles supported in the air;
One ground unit installed on the ground; And
And a wire unit connecting between the airship and the ground unit,
The wire unit includes:
A wire having one end connected to the ground unit and the other end connected to one of the flying objects;
A wire having one end connected to the ground unit and the other end connected to one of the other flying objects; And
And a wire connecting the flying objects to each other.
A flying body that is supported in the air;
One ground unit installed on the ground; And
And a wire unit connecting between the airship and the ground unit,
The wire unit includes:
Wherein the wire comprises two or more wires, wherein the wires comprise wires of different lengths.
A flying body that is supported in the air;
One ground unit installed on the ground; And
And a wire unit connecting between the airship and the ground unit,
The wire unit includes:
Wherein a friction unit for generating frictional force is provided on at least one of the wires, the friction unit including at least two wires.
The wires constituting the wire unit include wires of different lengths:
The friction unit includes:
And a plurality of wires are provided on the wire.
The friction unit includes:
Wherein the frictional units are constructed of frictional units of different sizes so that different drag forces are generated depending on the length of the wire to be installed.
Wherein at least the shortest wire among the wires is formed of a plurality of strands of high-strength fiber material.
The wire
And a power supply line for power supply.
In the ground unit or the air vehicle,
And a guide unit for fixing the end portions of the wires so as to be arranged in a spaced apart direction.
The guide unit includes:
A fixing plate fixed to the ground unit or the lower end of the air vehicle;
A rotating plate which is rotated in a horizontal direction with respect to the fixed plate;
A support plate installed upright in a direction perpendicular to the rotation plate;
And a plurality of supports connected to the support plate by a hinge so as to be rotatable in a vertical direction and extending in directions separated from each other and coupled with the wires.
A flying body that is supported in the air;
One ground unit installed on the ground; And
And a wire unit connecting between the airship and the ground unit,
The air-
And a tilt blade which is formed to extend in a direction inclined upward or downward from a side surface of the flying object and is rotatable with respect to the side surface of the flying object to adjust the direction of the drag force against the wind.
The above-
Wherein the airbag is formed to be inclined upward from both left and right sides of the airplane.
The above-
Wherein the airbag is formed in a shape inclined downward from both left and right sides of the airplane.
A flying body that is supported in the air;
One ground unit installed on the ground; And
And a wire unit connecting between the airship and the ground unit,
The air-
And a horizontal blade which extends horizontally from a side surface of the airplane and is rotatable with respect to a side surface of the airplane to adjust the direction of the drag against the wind.
The air-
Further comprising an adjustment wire for rotating the flying object to position the horizontal blade in an inclined manner.
The air-
An adjusting wire including a first adjusting wire and a second adjusting wire respectively connected to the left and right sides of the airplane;
And a control unit for controlling the lengths of the first control wire and the second control wire.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020150050878A KR101715731B1 (en) | 2015-04-10 | 2015-04-10 | Flying object opration system |
PCT/KR2016/003686 WO2016163794A1 (en) | 2015-04-10 | 2016-04-08 | Aircraft management system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150050878A KR101715731B1 (en) | 2015-04-10 | 2015-04-10 | Flying object opration system |
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KR20160121197A true KR20160121197A (en) | 2016-10-19 |
KR101715731B1 KR101715731B1 (en) | 2017-03-13 |
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KR1020150050878A KR101715731B1 (en) | 2015-04-10 | 2015-04-10 | Flying object opration system |
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WO (1) | WO2016163794A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000289695A (en) * | 1999-04-06 | 2000-10-17 | Hitachi Ltd | Moored flight body and its utilizing system |
KR20090069084A (en) * | 2007-12-24 | 2009-06-29 | 한국항공우주연구원 | Tension adjustable device for a aerostat or a balloon and method for adjusting the location of a aerostat or a balloon |
KR101167857B1 (en) * | 2011-11-04 | 2012-07-23 | (주)씨엠아이태가코리아 | Airborne wind power generating system |
KR101388491B1 (en) | 2013-07-30 | 2014-04-24 | 장수영 | Flying object opration system having position control function |
KR101429567B1 (en) | 2013-05-10 | 2014-09-23 | 장수영 | Opration system of flying object |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1091720C (en) * | 1997-06-11 | 2002-10-02 | 末来概念公司 | Aerial cableway leading to aerostatic airborne body |
JP3586709B2 (en) * | 2000-07-31 | 2004-11-10 | 独立行政法人産業技術総合研究所 | Tag airship |
US7287723B2 (en) * | 2005-07-14 | 2007-10-30 | Barnes Tracy L | Tethered or free flight blimp with collapsible tail fins |
WO2012042600A1 (en) * | 2010-09-28 | 2012-04-05 | サカセ・アドテック株式会社 | Stratosphere stay facility |
-
2015
- 2015-04-10 KR KR1020150050878A patent/KR101715731B1/en active IP Right Grant
-
2016
- 2016-04-08 WO PCT/KR2016/003686 patent/WO2016163794A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000289695A (en) * | 1999-04-06 | 2000-10-17 | Hitachi Ltd | Moored flight body and its utilizing system |
KR20090069084A (en) * | 2007-12-24 | 2009-06-29 | 한국항공우주연구원 | Tension adjustable device for a aerostat or a balloon and method for adjusting the location of a aerostat or a balloon |
KR101167857B1 (en) * | 2011-11-04 | 2012-07-23 | (주)씨엠아이태가코리아 | Airborne wind power generating system |
KR101429567B1 (en) | 2013-05-10 | 2014-09-23 | 장수영 | Opration system of flying object |
KR101388491B1 (en) | 2013-07-30 | 2014-04-24 | 장수영 | Flying object opration system having position control function |
Also Published As
Publication number | Publication date |
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WO2016163794A1 (en) | 2016-10-13 |
KR101715731B1 (en) | 2017-03-13 |
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