CN1899655A - Radio frequency remote control balloon - Google Patents
Radio frequency remote control balloon Download PDFInfo
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- CN1899655A CN1899655A CN 200510086188 CN200510086188A CN1899655A CN 1899655 A CN1899655 A CN 1899655A CN 200510086188 CN200510086188 CN 200510086188 CN 200510086188 A CN200510086188 A CN 200510086188A CN 1899655 A CN1899655 A CN 1899655A
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- balloon
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- helium
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- 239000001307 helium Substances 0.000 claims abstract description 12
- 229910052734 helium Inorganic materials 0.000 claims abstract description 12
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000001257 hydrogen Substances 0.000 claims abstract description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims description 15
- 241001465754 Metazoa Species 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 3
- 238000005183 dynamical system Methods 0.000 claims 2
- 238000013461 design Methods 0.000 abstract description 11
- 238000004088 simulation Methods 0.000 abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 238000005034 decoration Methods 0.000 abstract 1
- 210000003414 extremity Anatomy 0.000 description 25
- 230000000875 corresponding effect Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 210000002414 leg Anatomy 0.000 description 5
- 241000883990 Flabellum Species 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000014347 soups Nutrition 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000282320 Panthera leo Species 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 241000219477 Bougainvillea glabra Species 0.000 description 1
- 241000283073 Equus caballus Species 0.000 description 1
- 235000012364 Peperomia pellucida Nutrition 0.000 description 1
- 240000007711 Peperomia pellucida Species 0.000 description 1
- 241000233805 Phoenix Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 210000003194 forelimb Anatomy 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000029052 metamorphosis Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a balloon capable of flying remotely, which can be made into various shapes. The attached drawings are in a dragon shape as an example to depict the typical structure of the attached drawings: the outer surface is a skin (1) for protection and decoration; the middle core tube (3) longitudinally penetrates through the inner skin, the front nozzle (4) is opened at the throat of the dragon, and the rear tail nozzle (5) is positioned at the rear part; a closed helium balloon (6) (only one is not necessary in one remote control balloon) is fixed on the central core tube (3), and a hydrogen balloon (7) is fixed in the helium balloon (6) through a pull wire (8) around the hydrogen balloon; the two remote control power devices (9) and the two-limb simulation devices (10) comprise four batteries (or storage batteries) (11) for supplying energy to the two remote control power devices and the two-limb simulation devices, and the four batteries (or storage batteries) are all fixed on the central core pipe (3); a radio frequency receiving antenna (2) made of a plurality of strands of thin copper wires is fixed beside a central core tube (3). If the balloon is to be made into the shape of a bird, the design is also provided with a device for simulating bird wings. The invention can be applied to movie and television shooting and celebration activities of festivals and celebrations.
Description
Technical field aircraft manufacturing technology field
The balloon that the current people of technical background the manufacture sky that can fly up into the sky, but add power-equipment to it, so be difficult to control its motion, can only let alone to waft with the wind; Having had now can be by the dirigible of remote control, but generally will have skeleton to support, thus heavier, do greatlyyer, and can not be out of shape, be not suitable for performing; The balloon product of now existing processing Cheng Long shape, shape such as humanoid drops into practical, but the balloon of four limbs and wing action simulation device also do not occur being added with; There is one and makes the weapon of " day sieve Thunder Network " invent, though the language of " keeping net form with remote-control balloon is load-carrying lift-off device " is arranged in its " claims ", the words that one " in conjunction with computer; radar; acoustic control; sensing technology is a system; become complete intelligence day sieve Thunder Network " also arranged in " specification ", but just one say general, its most lengths all are to say the how do i net, how " oil bottle bomb firebomb " placed in arrangement, the scheme of specific design remote-control balloon motion not---its invention emphasis is that the knot thunder of how networking stops aircraft, guided missile, rather than how to come remote-control balloon flight, and the designer will be the method for " acoustic control ".
Summary of the invention is current, in many red-letter days with the ball of ceremonially all will exitting.Because it is bright-coloured, slim and graceful, elegant, played the part of open sky U.S., can also entrust to the care of human serious hope to circling in the air.But its also not nearly enough perfection.Should be improved it, make it can bring into play the effect that advances celebrating atmosphere better.
1, according to Moore's Law, one liter of helium has 0.9 gram, one liter of hydrogen that the lift of 1.3 grams is arranged approximately approximately in air, and one cubic metre of such gas just has one kilogram lift approximately.If add the counterweight suitable with its lift to balloon, it just can hover in the air.If counterweight is changed into the remote controlled powered system (being made up of signal receiving antenna, receiver amplifier, electromagnet, battery or battery, air blast and some plastic tubes, lead etc.) of a cover etc. heavy (heavy slightly also can), what it just can be according to the operator has been controlled at airflight again.With present technology, remote controlled powered system can't do very gently, so that balloon will be done is enough big (volume of each at least should more than 10 cubic metres).
2, present balloon fills with helium or hydrogen more.Helium is more expensive, and hydrogen is explosive again, so can make balloon two-layer---and outer dress helium, internal layer dress hydrogen can thriftyly can improve safety coefficient again like this.
In addition, along with development of science and technology, making the required material of balloon crust and power-equipment from now among the present invention can be more and more lighter, usefulness is more and more higher, just can satisfy instructions for use so might adorn the balloon of air in the future, thereby cost is manufactured in reduction greatly.
3, this kind balloon also can be made into the different shape (as shapes such as dragon, phoenix, lion, horse, tree, mountain, ingots) that needs, to be fit to different situation requirements.For the balloon of animal shape, the design simulates the four limbs of animal that its profile shows or the analogue means of wing action in addition, makes it more vivid.The major beat analogue means by two independently two main drives form as analogue means.For the remote-control balloon of birds profile, wing action simulation device and two main drives are made analogue means should respectively install one.
4, also to run through a neither too hard, nor too soft plastic tube in the balloon.It both can play the supporting role of similar " keel ", again can be and outwards jet from the other end at the air blast of one termination outside, look to seem that balloon is at spray wind.If reconnect holding vessel between air blast and balloon, there is any (as paper flower, water etc.) balloon just can " spray " what go out so in the holding vessel, thereby increases celebrating atmosphere better.
Description of drawings
Fig. 1 is to be a kind of representational equipment composition and the layout thereof of example display remoting balloon with imperial spheric balloon.For comprise among the figure, the back has the complicated formula power set of detailed description and animal two main drives to make analogue means, the with dashed lines frame has been irised out their position and scope among this figure.
Fig. 2 is complicated formula power set structure.
Fig. 3 is simple-type power set structures.
Fig. 4 is that animal two main drives are made analogue means.
Fig. 5 is an animal wing action simulation device.
Among Fig. 1, covering (1) has encased all devices; Core pipe (3) passes through within covering, and fore nozzle (4) is opened on the throat in the tap, and tail mouth (5) is positioned at the balloon rear portion; Helium balloon (6) (not necessarily only having one in the remote-control balloon) is fixed on the core pipe (3); Helium balloon (6) encases hydrogen balloon (7), and hydrogen balloon (7) is fixed in helium balloon (6) inside by the backguy (8) around it; Two remote-controlled power units (9) are installed in the head and the middle part of balloon respectively; Two two main drives are made analogue means (10) in position; Four batteries (or battery) (11) are respectively two power set and two two limb analogue means supplying energies; Two power set (9), two two limb analogue means (10) and four batteries (or battery) (11) all are fixed on the core pipe (3), and these eight equipment will put evenly as far as possible, make gravity to disperse, and are easy to balloon like this and keep balance; Because electromagnetic wave has very strong penetration performance, so radio frequency reception antenna (2) also designs within the covering, they are fixed on core pipe (3) next door, are made by the multiply thin copper wire, so they can be crooked arbitrarily with the metamorphosis of balloon.
Fig. 2 is complicated formula power set structure chart.Middle upper portion is the vertical view that dwindles, in order to the shape of performance air jet pipe.Package unit is fixed on the core pipe (3) by pedestal (12).Six cover radio frequencies receptions, amplifying circuit are arranged in the power radiofrequency signal receiving circuit box (13), can receive the RF remote-controlled signal that six radio-frequency antennas (2) receive simultaneously, left air jet pipe (14) is gone up in control simultaneously, upward the keying of right air jet pipe (15), bottom left air jet pipe (16), bottom right air jet pipe (17) reaches the keying of the air blast of being made up of power small machine (18) and flabellum (19) and just reverses.Each all has the air jet pipe by-pass valve control of being made up of the intermediate plate ring (25) in a sheet (20), electromagnet (21), soup stick (22), patch (23), extension spring (24) and the pipe above the air jet pipe.The course of work that control air jet pipe (14-17) opens and closes is: after reception antenna (2) is received radiofrequency signal, signal is sent in radiofrequency signal reception, the amplifying circuit box (13), corresponding circuit turn-on work, make corresponding electromagnet (21) energising produce magnetic force, the pulling force that attracts corresponding iron soup stick (22) to overcome corresponding extension spring (24) is mentioned corresponding patch (23), corresponding air jet pipe (14,15,16 or 17) is opened, air ejection (or suction) makes remote-control balloon make corresponding action because of its recoil strength; Radiofrequency signal stops, and this circuit disconnects, electromagnet (21) outage, magnetic force disappears, and soup stick (22) is left behind by extension spring (24), and patch (23) falls into intermediate plate ring (25) and blocks air jet pipe (14,15,16 or 17), make it to close, jet (or air-breathing) finishes, and this action of balloon stops.Because the tubular similar ox horn of air jet pipe (14,15,16 and 17) (promptly go up two pipes not only upwards but also relative, down two pipes not only downwards but also relative), so they also possess the function that balloon is turned to---when four pipes were opened simultaneously, balloon full speed aheaded; When opening a left side (14), upward right (15) pipe, balloon turns to downwards while advancing; When opening bottom left (16), bottom right (17) pipe, upwards turn to; When opening a left side (14), bottom left (16) pipe, turn right to; When opening right (15), bottom right (17) pipe, turn left to; When opening a left side (14), bottom right (17) pipe, be rotated counterclockwise; When opening right (15), bottom left (16) pipe, turn clockwise; Open when pipe separately, advance at a slow speed and do corresponding rotation.Antipole relay (26) is under the control of its reception and amplifying circuit, the variation that the air blast that power small machine (18) and flabellum (19) are formed produces forward and backward, the air that just can produce inside and outside two kinds of different directions in V-arrangement air inlet pipe (27) flows, and makes remote-control balloon the difference action of advancing or retreating be occurred.V-arrangement air inlet pipe (27) opening makes progress, and this is for making inside wind, when balloon is advanced, can increase lift at flabellum (19).Antipole relay (26) also can be installed in radiofrequency signal reception, the amplifying circuit box (13).
This cover remote-controlled power unit needs six cover remote signals receptions, amplifying circuit.If a remote-control balloon just needs 12 cover remote signal receptions, amplifying circuit and actuating equipment thereof altogether with the such remote-controlled power unit of two covers.This remote-control balloon just can be done the different action of kind surplus in the of 900 in theory so.But, not that each remote-control balloon all needs so complicated control method.
Fig. 3 is the simple-type remote-controlled power unit.Claim that it is because it is easy and simple to handle for " simple-type ", and be not to be to make simply.
Its induction part is almost completely the same with complicated formula remote-controlled power unit, and the main distinction is that a jet backward onward impulse pipe (28) is arranged in the bottom of its air inlet pipe (27).V-arrangement air inlet pipe (27) back is branch turbine (29) and air distribution disk (30-).Divide the air entraining pipe (31) of turbine (29) to be enclosed within V-arrangement air inlet pipe (27) tail end.Air inlet pipe (27) tail end tube wall has a circle protuberance (32) outward, and air entraining pipe (31) the circle protuberance (33) of yet having taken advantage of a situation so air entraining pipe (31) can be around V-arrangement air inlet pipe (27) rotation, but can not deviate from.Air distribution disk (30) is as a disk that leaks the end, on six branch pores (34) are arranged, in succession respectively upwards (35), downwards (36), left (37), to the right (38), be rotated counterclockwise (39), turning clockwise (40) six turns to air jet pipe.Air distribution disk (30) back is a column (41), is fixed on the core pipe (3).Divide turbine axis (42) on the extended line of V-arrangement air inlet pipe (27) center, its front end is fixed on the air entraining pipe (31), and insert in the column (41) at air distribution disk (30) back the rear end.Divide gas small machine (43) to be fixed on the reinforcement (44).When remote controller sends remote signal, after antenna (2) is received, remote signal sent to radio frequency in the circuit box (13) is accepted, amplifying circuit, radio frequency is accepted and amplifying circuit starts branch gas small machine (43) energising, driving wheel (45) rotates, drive and divide turbine (29) to rotate, gas-distributing pipe (31) will turn to air jet pipe (35-40) to dock with each in turn.When remote signal stops, divide gas small machine (43) outage, which air entraining pipe (31) turning to air jet pipe (35,36,37,38,39 or 40) to dock with, air-flow will turn to air jet pipe (35,36,37,38,39 or 40) to continue ejection via which, and remote-control balloon will be made corresponding go to action because of the recoil effect.A-A section among the figure can clearly illustrate gas-distributing pipe (31) with turn to the sight of air jet pipe (36) when docking downwards, other air jet pipe (35,37,38,39 and 40) is covered, and the air communication mistake can not be arranged, balloon only can turn to downwards under this state.When gas-distributing pipe (31) was parked between each minute pore (34), air-flow was obstructed at air distribution disk (30), will be from onward impulse pipe (28) ejection of air inlet pipe (27) bottom, and remote-control balloon will travel forward.If power small machine (18) does not use remote control to start, cut out, and with hand switch (46) manual operation when balloon is positioned at ground, so this cover remote-controlled power unit if once the cover remote signal receive, amplifying circuit can control balloon do forward, make progress, downwards, left, to the right, be rotated counterclockwise and turn clockwise seven kinds and move, can finish basic performance task fully.But the user will spend more a little times and could skillfully operate.
Fig. 4 is that two main drives are made analogue means, and it is that the principle parallel according to the parallelogram opposite side, that the diagonal angle equates designs.Its thinking is: after having fixed summit of parallelogram, control its limit, just can control its form; So,, just make the support of elbow (or knee), make the support of elbow (or knee) with the lower part with a prolongation limit of this parallelogram with top with a parallelogram regardless of being to simulate upward (preceding) limb or (back) limb down.A fixing summit that prolongs the edge-to-edge, control prolong that unfixing adjacent side of end points on limit, and the form that just can control parallelogram and prolong the limit just can be in order to imitate out the form of major beat.Its running is: after the remote signal reception in the plan limb circuit box (63), amplifying circuit are received signal, make and intend primary minimum motor (47) startup, drive plan limb driving wheel (48), flywheel (49) rotation; Because flywheel (49) all is fixed on the main shaft (52) with each hind leg attitude of one wheel (51) of plan limb frame (50) both sides, so three limb attitudes on every limit are taken turns---hind leg attitude wheel (51), forelimb attitude are taken turns (64), lower limb attitude wheel (65) and the top belt (53) that is overlapped and also can be rotated thereupon.Because limb shape frame (54) is one the limit of prolongation, deformable parallelogram are arranged again, its last summit (55) is fixed on the crossbeam of intending on the limb frame (50) (56), it and belt (53) are located to link in (57), so limb shape frame (54) also gets into smooth with belt (53)---joint (57) are when the most preceding, limb shape frame (54) is "/" straight line, the appearance of doing one's utmost to stretch out forward just as arm or leg; Joint (57) is when the back, and limb shape frame (54) is as one "〉" shape, just as the appearance of arm or leg recovery; Joint (57) is on top the time, and limb shape frame (54) is as " ∨ " shape, the appearance of upwards lifting just as arm or leg.The movement position that same two main drives are made two limb shape framves (54) in the analogue means is synchronously or staggers, can be according to the characteristics adjustment of imitation animal.Limb shape frame (54) prolongs on the limit a tiny balloons collar (58), is for avoiding limb shape frame (54) and covering
(1) rubs mutually and design.
This figure is the design of analogy people's arm (joint four limbs backward) action.The action design of analogy people leg (being joint four limbs forward) is as long as just passable turning before and after the limb shape frame among this figure.
Two such devices just can be simulated the action of four limbs.
Fig. 5 is the analogue means of wing action.After plan wing circuit box (66) is received radiofrequency signal, make and intend wing small machine (67) energising startup, intend wing driving wheel (59) rotates thereupon, driving two traction wheels (60) rotates, two ends are bound up on traction wheel (60) respectively and the wing bar (62) that draws intended on the wing bar (61) just draws and puts action intending wing bar (61), make plan wing bar (61) simulate the appearance that wing is agitated.
Owing to worry in the process of balloon upset when flight, twisting, can make the contact instability between each part, thereby may have influence on the stability of balloon flight, so each driving wheel (45), (48), (59) and branch turbine (29), flywheel (49) and the traction wheel (60) that are directly driven by motor have all used rubber ring as circumference, keep stable tight contact, come transferring power by rubber springy between the corresponding two-wheeled, also can attempt between them changing and be gear drive.In addition,, adopted resilient belt (53) to be connected between each limb attitude wheel (51), (64) among Fig. 4, (65) and the limb shape frame (54), also can attempt changing the chaining transmission between them for same consideration.
In the required remote control equipment of the design, emission of radio frequency signals, reception and amplifying circuit have a lot of schemes available.Be that the center is formed radiating circuit, is main composition decoding circuit with decoder HT-12F for example with coding integrated circuit H T-12E and three mechanical type code-discs, the man-to-man circuit that transmits and receives of 999 covers just can be set, the enough usefulness of controlling a hundreds of remote-control balloon simultaneously.RF remote-controlled technology is very ripe now, and is not the design's innovation part, so do not repeat them here.
The design's cardinal principle, detailed construction illustrated in the above explanation of the specific embodiment, and existing technology can be produced qualified product fully.It will dress up the sky of we and celebration lively more beautifully in red-letter day till that time, and we will see that aerial dragon rises the fantasy marvellous scene that the lion dance bright cloud flies.It can also participate in movies-making, the camera lens that circles in the air in the works such as mythology, swordsman is directly taken without computer animation, thereby made the shooting of many video display camera lenses more convenient, and effect is more true to nature.
Claims (5)
1, the present invention is the balloon of being made by rubber film or plastic sheeting, and gross weight is with suitable with the air of volume, and it is characterized in that: outermost is the covering that one deck plays protection and decorative effect, and interior is airtight balloon; Airtight balloon divides inside and outside two-layer again, outer dress helium, internal layer dress hydrogen; RF remote-controlled dynamical system is installed; Pass through a plastic tube in the body, can circulated gases in the pipe; Profile can be made into various images, can install the device of simulated animal four limbs and wing action if desired.So it can simulate certain image, quite freely circle in the air by being controlled in the air of operator.
2,, it is characterized in that covering is interior, balloon is equipped with the RF remote-controlled dynamical system of being made up of battery (or battery), air blast, radio frequency reception antenna, radio frequency reception and amplifying circuit, electromagnet, some leads and plastic tube etc. outward according to claim 1.
3, according to claim 1, it is characterized in that balloon has inside and outside two-layer, outer dress helium, internal layer dress hydrogen is promptly wrapping hydrogen balloon in the helium balloon.
4,, it is characterized in that covering is interior, balloon has a neither too hard, nor too soft plastic tube to run through wherein, can play the supporting role of similar " keel " outward according to claim 1.And, if on this root plastic tube tail end mouth of pipe, connect the air blast of a balloon outside, just can make the gas of this air blast ejection pass the front end mouth of pipe ejection of balloon from plastic tube, look like this like balloon at spray wind.
5,, it is characterized in that portion installs the four limbs of imitation animal, the analogue means of wing action if desired within it according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510086188 CN1899655A (en) | 2005-07-23 | 2005-07-23 | Radio frequency remote control balloon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510086188 CN1899655A (en) | 2005-07-23 | 2005-07-23 | Radio frequency remote control balloon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1899655A true CN1899655A (en) | 2007-01-24 |
Family
ID=37655758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510086188 Pending CN1899655A (en) | 2005-07-23 | 2005-07-23 | Radio frequency remote control balloon |
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| Country | Link |
|---|---|
| CN (1) | CN1899655A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104225928A (en) * | 2013-06-18 | 2014-12-24 | 范蔚 | Entertainment device |
| CN110935184A (en) * | 2019-12-16 | 2020-03-31 | 重庆三峡学院 | Equipment based on unmanned aerial vehicle and Chinese dance dragon combine |
-
2005
- 2005-07-23 CN CN 200510086188 patent/CN1899655A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104225928A (en) * | 2013-06-18 | 2014-12-24 | 范蔚 | Entertainment device |
| CN104225928B (en) * | 2013-06-18 | 2018-03-13 | 范蔚 | A kind of entertainment device |
| CN110935184A (en) * | 2019-12-16 | 2020-03-31 | 重庆三峡学院 | Equipment based on unmanned aerial vehicle and Chinese dance dragon combine |
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Open date: 20070124 |