CN207045675U - Unmanned plane - Google Patents
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- CN207045675U CN207045675U CN201720376519.9U CN201720376519U CN207045675U CN 207045675 U CN207045675 U CN 207045675U CN 201720376519 U CN201720376519 U CN 201720376519U CN 207045675 U CN207045675 U CN 207045675U
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- connecting rod
- unmanned plane
- fuselage
- rotor
- motor
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Abstract
The utility model proposes a kind of unmanned plane, the unmanned plane includes fuselage, the first power set and the second power set；Rotor before first power set include two, rotor is correspondingly arranged in the opposite sides of front fuselage respectively before two；Preceding rotor includes first connecting rod and the first drive component, and one end of first connecting rod is provided with the first drive component, other end connection fuselage；Rotor after second power set include two, rotor is correspondingly arranged in the opposite sides of back body respectively after two；Rotor includes second connecting rod and the second drive component afterwards, and one end of second connecting rod is provided with the second drive component, other end connection fuselage；First connecting rod and second connecting rod one of which and fuselage be rotatablely connected and can be along its axial-rotation, another one is rotatablely connected with fuselage and has folded state and extended configuration.Technical solutions of the utility model improve the horizontal flight speed of unmanned plane.
Description
Technical field
Unmanned aerial vehicle design technical field is the utility model is related to, more particularly to a kind of unmanned plane.
Background technology
A pair of preceding rotors and a pair of rear rotors are provided with a kind of fuselage of existing unmanned plane.Wherein, unmanned plane is hanging down
Straight takeoff phase, preceding rotor are worked simultaneously with rear rotor, and the lift risen is provided for unmanned plane；Unmanned plane rises to certain altitude
When enter the transition flight stage, preceding rotor rotational to horizontal level, then rotor then gradually reduce rotating speed until being stopped；Nothing
Man-machine to enter level flight stage, now preceding rotor is worked on, and the thrust of horizontal flight is provided for unmanned plane, and then rotor stops
Only work.
After entering level flight stage due to unmanned plane, although rear rotor stopped work, but be still within stretch-like
State, the air drag being subject to during unmanned plane during flying is so increased, therefore so the speed of unmanned plane horizontal flight is relatively low.
Utility model content
Main purpose of the present utility model is to provide a kind of unmanned plane, it is intended to reduces what unmanned plane was subject in horizontal flight
Air drag.
To achieve the above object, the utility model proposes a kind of unmanned plane, the unmanned plane include fuselage, the first power
Device and the second power set, rotor before first power set include two, the two preceding rotors are correspondingly arranged in institute respectively
State the opposite sides of front fuselage；The preceding rotor includes first connecting rod and the first drive component, one end of the first connecting rod
First drive component is provided with, the other end connects the fuselage；Rotor after second power set include two, described in two
Rotor is correspondingly arranged in the opposite sides of the back body respectively afterwards；Rotor includes second connecting rod and the second driving group after described
Part, one end of the second connecting rod are provided with second drive component, and the other end connects the fuselage；The first connecting rod and
The second connecting rod one of which and the fuselage be rotatablely connected and can be along the axial-rotation of the connecting rod, another one and the fuselage
It is rotatablely connected and there is folded state and extended configuration.
Preferably, the second connecting rod is rotatablely connected with the fuselage and has folded state and extended configuration.
Preferably, second power set also include foldable base, drive device and connecting rod rocking arm, and the foldable base is fixed
In in the fuselage, the two rear rotors are rotationally connected with the foldable base respectively；One end of the connecting rod rocking arm and the drive
Dynamic device is flexibly connected, and the other end is flexibly connected with the second connecting rod；The drive device is driving the connecting rod rocking arm
Moved along the length direction of the fuselage.
Preferably, the drive device includes screw mandrel, motor and sliding block, and the motor connects the screw mandrel
One end and the screw mandrel is axially rotated, the sliding block is socketed the screw mandrel and coordinated with the wire rod thread, described
Connecting rod rocking arm is flexibly connected with the sliding block.
Preferably, the one end of the screw mandrel away from the motor is rotatablely connected with the foldable base.
Preferably, the drive device includes expansion link and motor, and the motor connects the expansion link
One end and the expansion link is stretched in the length direction of the fuselage, the activity of the connecting rod rocking arm and the expansion link is even
Connect.
Preferably, the connecting rod rocking arm includes connecting portion and is arranged at two holding sections of described connecting portion one end, and described the
Two connecting rods are hinged between two holding sections and with two holding sections, the one end of the connecting portion away from the holding section
It is hinged with the drive device.
Preferably, chute along its length is offered on the second connecting rod；One end of the connecting rod rocking arm with it is described
Drive device is hinged, and the other end is provided with the projection being fastened in the chute.
Preferably, second drive component also includes rotor blade, and the rotor blade is twayblade
Preferably, the unmanned plane includes controller, and second drive component also includes external rotor electric machine and motor cabinet,
A magnet is provided with the external rotor electric machine, magnetic inductor is provided with the motor cabinet, the magnetic inductor is to work as
When stating external rotor electric machine and driving the magnet to go to predeterminated position, control signal, the controller control are sent to the controller
Make the external rotor electric machine to stop operating, so that the rotor blade is parallel with the second connecting rod.
Technical solutions of the utility model set first power set and second power on the fuselage of unmanned plane
Device, when the unmanned plane takes off vertically, first power set and the second power rotary device can be simultaneously nobody
Machine provides the lift needed for it；When the unmanned plane enters level flight stage, first power set and described second
Power set one of which is rotatable and provides thrust needed for horizontal flight for the unmanned plane, and another one is then foldable with this
Reduce the resistance that unmanned plane is subject in horizontal flight, so as to improve the horizontal flight speed of unmanned plane.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is a kind of top view of unmanned plane provided by the utility model；
Fig. 2 is in the schematic diagram of extended configuration for the unmanned plane shown in Fig. 1；
Fig. 3 is in the schematic diagram of folded state for the unmanned plane shown in Fig. 1；
Fig. 4 is the schematic diagram that the second power set are in extended configuration in Fig. 1；
Fig. 5 is the schematic diagram that the second power set are in folded state in Fig. 1.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 10 | Fuselage | 20 | Wing |
| 30 | Preceding rotor | 31 | First connecting rod |
| 32 | First drive component | 40 | Rotor afterwards |
| 41 | Second connecting rod | 42 | Second drive component |
| 421 | Rotor blade | 422 | External rotor electric machine |
| 423 | Motor cabinet | 43 | Foldable base |
| 431 | Mounting groove | 44 | Drive device |
| 441 | Screw mandrel | 442 | Motor |
| 443 | Sliding block | 45 | Connecting rod rocking arm |
| 451 | Connecting portion | 452 | Holding section |
| 50 | Rotating shaft | 60 | Latch |
| 70 | Base |
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the utility model protection.
If it is to be appreciated that related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction be only used for explain it is relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment
Two " etc. description is only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating meaning
The quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, and this technical side is will be understood that when the combination appearance of technical scheme is conflicting or can not realize
The combination of case is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of unmanned plane, it can be used for border cruise, can be used for geological mapping, can be with
For express transportation.Usual unmanned plane includes fuselage, and the about medium position of the fuselage is provided with wing, the fuselage head
Both sides be symmetrically arranged with two before rotor, rotor after the both sides of the afterbody are symmetrically arranged with two.Wherein, the preceding rotor
Include two rotor blades with the rear rotor and drive the motor of rotor blade rotation.
When the preceding rotor dress with it is described after the rotor blade of rotor is rotated in horizontal plane when, the rotor blade with it is mutual
Effect, which can produce a upward thrust, makes the unmanned plane vertical ascent.When the preceding rotor with it is described after rotor rotor leaf
For piece when perpendicular rotates, the rotor blade can produce a thrust forward with interaction makes the unmanned plane horizontal
Flight, and the upward active force required for now the unmanned plane maintains certain altitude flight is provided by the wing
's.
Referring to figs. 1 to Fig. 3, a kind of unmanned plane provided by the utility model, the unmanned plane has fuselage 10 and wing 20.
The wing 20 is arranged at the opposite sides at the middle part of fuselage 10.
In the present embodiment, the unmanned plane includes the first power set and the second power set.The first power dress
The required lift that takes off vertically can be provided for the unmanned plane simultaneously with the second power rotary device by putting.When the unmanned plane liter
When entering level flight stage to certain altitude, first power set and the second power set one of which are nobody
Machine provides the thrust needed for horizontal flight, and another one is then foldable to pack up, and reduces the resistance that unmanned plane is subject to this.
Rotor 30 before first power set include two, the two preceding rotors 30 are correspondingly arranged in the fuselage 10 respectively
The opposite sides of front end.The preceding rotor 30 includes the drive component 32 of first connecting rod 31 and first, and the one of the first connecting rod 31
End is provided with first drive component 32, and the other end connects the fuselage 10.
Rotor 40 after second power set include two, the two rear rotors 40 are correspondingly arranged in the fuselage 10 respectively
The opposite sides of rear end.Rotor 40 includes the drive component 42 of second connecting rod 41 and second after described, and the one of the second connecting rod 41
End is provided with second drive component 42, and the other end connects the fuselage 10.
The first connecting rod 31 and the one of which of the second connecting rod 41 and the fuselage 10 be rotatablely connected and can be along the company
The axial-rotation of bar, another one are rotatablely connected with the fuselage 10 and have folded state and extended configuration.
For example, the first connecting rod 31 and the fuselage 10 be rotatablely connected and can along the axial-rotation of the first connecting rod 31,
The second connecting rod 41 is rotatablely connected with the fuselage 10 and has folded state and extended configuration.When the unmanned plane vertically rises
When flying, the first connecting rod 31 and the second connecting rod 41 are respectively positioned on horizontal direction, first rotor blade 321 and described the
Two rotor blades 421 rotate in the horizontal plane, to provide the lift required for rising for the unmanned plane.
When the unmanned plane fly to certain altitude carry out horizontal flight when, the first connecting rod 31 along its axial-rotation to hang down
Nogata is to first rotor blade 321 rotates in the vertical plane, to be provided for the unmanned plane needed for horizontal flight
The thrust wanted.Now, the second connecting rod 41 then folds to close to the direction of the fuselage 10, so substantially reduces unmanned plane
The resistance being subject in horizontal flight, be advantageous to improve the speed of its horizontal flight.
Technical solutions of the utility model set first power set dynamic with described second on the fuselage 10 of unmanned plane
Power apparatus, when the unmanned plane takes off vertically, first power set and the second power rotary device can be nothing simultaneously
Lift of the man-machine offer needed for it；When the unmanned plane enters level flight stage, first power set and described the
Two power set one of which are rotatable and provide thrust needed for horizontal flight for the unmanned plane, another one then it is foldable with
This reduces the resistance that unmanned plane is subject in horizontal flight, so as to improve the horizontal flight speed of unmanned plane.
In a preferred embodiment, the first connecting rod 31 and the fuselage 10 be rotatablely connected and can be along the first connecting rod 31
Axial-rotation.
The second connecting rod 41 is rotatablely connected with the fuselage 10 and has folded state and extended configuration.Unmanned plane is forward
During flight, because first rotor blade 321 is located at the front of the wing 20, the wing 20 will not be hindered described in flow direction
The air draught of first rotor blade 321, so not interfering with caused by first rotor blade 321 and air-flow interaction
Thrust forward, so as to be more beneficial for improving the horizontal flight speed of the unmanned plane.
Refering to Fig. 4 and Fig. 5, second power set also include foldable base 43, drive device 44 and connecting rod Rocker arm 45.Institute
State foldable base 43 to be fixed in the fuselage 10, the two rear rotors 40 are rotationally connected with the foldable base 43 respectively.The company
One end of bar Rocker arm 45 is flexibly connected with the drive device 44, and the other end is flexibly connected with the second connecting rod 41.Here, institute
Drive device 44 is stated to drive length direction of the connecting rod Rocker arm 45 along the fuselage 10 to move.
In the present embodiment, the foldable base 43 can be cube shape structure, and the two rear rotors 40 pass through rotating shaft respectively
50 are connected to the left and right sides of the foldable base 43.Specifically, the left and right sides of the foldable base 43 offers mounting groove
431, in the mounting groove 431, the rotating shaft 50 sequentially passes through the foldable base 43 for one end of the second connecting rod 41
The second connecting rod 41 is connected to the foldable base 43 by the lower surface of upper surface, the second connecting rod 41 and the foldable base 43
On, and the second connecting rod 41 can be along the axial rotation of the rotating shaft 50.
In other embodiments, the left and right sides of the foldable base 43 can open up blind hole respectively, and ten thousand are set in the blind hole
To wheel, one end of the second connecting rod 41 is connected with the universal wheel and can rotated around the axis of the universal wheel.
In the present embodiment, the drive device 44 includes screw mandrel 441, motor 442 and sliding block 443.The driving
Motor 442 connects one end of the screw mandrel 441 and the screw mandrel 441 is axially rotated, and the sliding block 443 is socketed described
Screw mandrel 441 simultaneously coordinates with the screw thread of screw mandrel 441.The connecting rod Rocker arm 45 is flexibly connected with the sliding block 443.
The screw mandrel 441 is in the motor 442 when being rotated by, and the sliding block 443 is due to by its both sides
Connecting rod Rocker arm 45 holdback force and moved along the length direction of the fuselage 10, one end of the connecting rod Rocker arm 45 is driven with this
Moved along the length direction of the fuselage 10.
Specifically, the motor 442 is Servo-controller, and shaft coupling, the silk are provided with the Servo-controller
One end of bar 441 is rotatablely connected with the shaft coupling.The sliding block 443 offers through hole, and ball spiral shell is provided with the through hole
Mother, the sliding block 443 are sheathed on the screw mandrel 441 by the through hole, are matched somebody with somebody by ball nut and the screw thread of screw mandrel 441
Close.
It is understood that the one end of the screw mandrel 441 away from the motor 442 can rotate with the foldable base 43
Connection.It can so prevent the screw mandrel 441 from being teetertottered during rotation, be advantageous to the sliding block 443 in institute
State and slided on screw mandrel 441, so as to be advantageous to the folding of the second connecting rod 41.
In another embodiment, the drive device 44 may also include expansion link and motor, be stretched described in the motor connection
One end of contracting bar and the expansion link is stretched in the length direction of the fuselage 10, the connecting rod Rocker arm 45 with it is described flexible
Bar is flexibly connected.Here, motor can be arranged on the rear of the foldable base 43, the upper of the foldable base 43 can also be arranged on
Side.For example, when motor is arranged on the rear of the foldable base 43, the expansion link between the foldable base 43 and motor,
And one end of the expansion link coordinates with motor gear, when motor rotates clockwise, the expansion link moves backward, the motor inverse time
When pin rotates, the expansion link travels forward.
In the present embodiment, the connecting rod Rocker arm 45 includes connecting portion 451 and is arranged at the two of described one end of connecting portion 451
Holding section 452.The second connecting rod 41 is between two holding sections 452 and be hinged with two holding sections 452, the company
The one end of socket part 451 away from the holding section 452 is be hinged with the drive device 44.
Inserted it should be noted that the one end of the connecting portion 451 away from the holding section 452 and the sliding block 443 pass through
Pin 60 is flexibly connected, and two holding sections 452 are flexibly connected with the second connecting rod 41 also by latch 60.The connecting rod rocking arm
Length direction of 45 one end along the fuselage 10 is moved, and the second connecting rod 41 is driven to close to the side of the fuselage 10 with this
To folding.
In other embodiments, chute along its length can be offered on the second connecting rod 41.The connecting rod shakes
One end of arm 45 is be hinged with the drive device 44, and the other end is provided with the projection being fastened in the chute.Specifically, institute
The one end for stating connecting rod Rocker arm 45 is flexibly connected with the sliding block 443 by latch, and the other end is fastened in described by the projection
In chute.
Reference picture 5, second drive component 42 also include rotor blade 421, and the rotor blade 421 is twayblade.
It is if described when the second connecting rod 41 folds it is understood that the rotor blade 421 is three blades or quaterfoil
Rotor blade 421 can be collided and be damaged with the fuselage 10, while can also hinder the folding of the second connecting rod 41.
The unmanned plane includes controller (not shown), second drive component 42 also include external rotor electric machine 422 and
Motor cabinet 423, a magnet is provided with the external rotor electric machine 422, magnetic inductor is provided with the motor cabinet 423, it is described
Magnetic inductor is sent to the controller and controlled to when the external rotor electric machine 422 drives the magnet to go to predeterminated position
Signal processed, the controller controls the external rotor electric machine 422 to stop operating, so that the rotor blade 421 and described second
The direction of connecting rod 41 is consistent.The direction of the rotor blade 421 and the second connecting rod 41 is consistent, and can prevent institute
The rotor blade 421 when second connecting rod 41 folds is stated to collide with the fuselage 10.
It should be noted that above-mentioned predeterminated position can be the magnet position farthest apart from the magnetic inductor,
Can be the magnet position nearest apart from the magnetic inductor.The motor cabinet 423 is fixed, thus the magnetic
The position of inductor immobilizes, but the magnet rotates with the rotation of the external rotor electric machine 422.When the magnet turns
To with the magnetic inductor it is closest or farthest when, the magnetic inductor sends control signal to the controller, the control
Device processed controls the external rotor electric machine 422 to stop operating so that the rotor blade 421 stops operating.
Reference picture 4 and Fig. 5, second power set also include being used to fix the foldable base 43 and the motor
442 base 70.The setting of the base 70, improve the second powerplant configuration stability.It is understood that institute
The base 70 can also be not provided with by stating the second power set, and the foldable base 43 is directly anchored to the motor 442
In the fuselage 10.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model,
Every equivalent structure change under inventive concept of the present utility model, made using the utility model specification and accompanying drawing content
Change, or directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of unmanned plane, there is fuselage, it is characterised in that including：
First power set, including rotor before two, the two preceding rotors are correspondingly arranged in relative the two of the front fuselage respectively
Side；The preceding rotor includes first connecting rod and the first drive component, and one end of the first connecting rod is provided with first driving
Component, the other end connect the fuselage；
Second power set, including rotor after two, the two rear rotors are correspondingly arranged in relative the two of the back body respectively
Side；Rotor includes second connecting rod and the second drive component after described, and one end of the second connecting rod is provided with second driving
Component, the other end connect the fuselage；
The first connecting rod and the second connecting rod one of which are rotatablely connected with the fuselage and can revolved along the axial direction of the connecting rod
Turn, another one is rotatablely connected with the fuselage and has folded state and extended configuration.
2. unmanned plane as claimed in claim 1, it is characterised in that the second connecting rod is rotatablely connected and had with the fuselage
Folded state and extended configuration.
3. unmanned plane as claimed in claim 2, it is characterised in that second power set also include foldable base, driving dress
Put and be fixed on connecting rod rocking arm, the foldable base in the fuselage, the two rear rotors are rotationally connected with the foldable base respectively；
One end of the connecting rod rocking arm is flexibly connected with the drive device, and the other end is flexibly connected with the second connecting rod；The drive
Device is moved to drive length direction of the connecting rod rocking arm along the fuselage to move.
4. unmanned plane as claimed in claim 3, it is characterised in that the drive device includes screw mandrel, motor and sliding block,
One end of screw mandrel described in the motor connection and the screw mandrel is axially rotated, the sliding block be socketed the screw mandrel and with
The wire rod thread coordinates, and the connecting rod rocking arm is flexibly connected with the sliding block.
5. unmanned plane as claimed in claim 4, it is characterised in that the one end of the screw mandrel away from the motor with it is described
Foldable base is rotatablely connected.
6. unmanned plane as claimed in claim 3, it is characterised in that the drive device includes expansion link and motor, institute
State motor to connect one end of the expansion link and make the expansion link to stretch in the length direction of the fuselage, the company
Bar rocking arm is flexibly connected with the expansion link.
7. the unmanned plane as described in any one of claim 3 to 6, it is characterised in that the connecting rod rocking arm includes connecting portion and set
Be placed in two holding sections of described connecting portion one end, the second connecting rod between two holding sections and with two holding sections
Be hinged, the one end of the connecting portion away from the holding section is hinged with the drive device.
8. the unmanned plane as described in any one of claim 3 to 6, it is characterised in that offered on the second connecting rod along length
The chute in direction；One end of the connecting rod rocking arm is hinged with the drive device, and the other end, which is provided with, to be fastened in the chute
Projection.
9. unmanned plane as claimed in claim 2, it is characterised in that second drive component also includes rotor blade, described
Rotor blade is twayblade.
10. unmanned plane as claimed in claim 9, it is characterised in that the unmanned plane includes controller, second driving group
Part also includes external rotor electric machine and motor cabinet, is provided with a magnet on the external rotor electric machine, magnetic is provided with the motor cabinet
Inductor, the magnetic inductor is to when the external rotor electric machine drives the magnet to go to predeterminated position, to the control
Device sends control signal, and the controller controls the external rotor electric machine to stop operating, so that the rotor blade and described the
Two connecting rods are parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720376519.9U CN207045675U (en) | 2017-04-11 | 2017-04-11 | Unmanned plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720376519.9U CN207045675U (en) | 2017-04-11 | 2017-04-11 | Unmanned plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207045675U true CN207045675U (en) | 2018-02-27 |
Family
ID=61489879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720376519.9U Active CN207045675U (en) | 2017-04-11 | 2017-04-11 | Unmanned plane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207045675U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109018349A (en) * | 2018-08-10 | 2018-12-18 | 侯志强 | A kind of multi-rotor unmanned aerial vehicle system suitable for stablizing dispensing under the conditions of high-speed flight |
| CN110395381A (en) * | 2018-04-24 | 2019-11-01 | 广州刀锋智能科技有限公司 | A kind of Intelligent flight device |
-
2017
- 2017-04-11 CN CN201720376519.9U patent/CN207045675U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395381A (en) * | 2018-04-24 | 2019-11-01 | 广州刀锋智能科技有限公司 | A kind of Intelligent flight device |
| CN110395381B (en) * | 2018-04-24 | 2021-06-22 | 广州刀锋智能科技有限公司 | Intelligent aircraft |
| CN109018349A (en) * | 2018-08-10 | 2018-12-18 | 侯志强 | A kind of multi-rotor unmanned aerial vehicle system suitable for stablizing dispensing under the conditions of high-speed flight |
| CN109018349B (en) * | 2018-08-10 | 2022-02-22 | 侯志强 | Multi-rotor unmanned aerial vehicle system suitable for stable throwing under high-speed flight condition |
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