CN109484646A - A kind of load-carrying dropping gear of model helicopter - Google Patents
A kind of load-carrying dropping gear of model helicopter Download PDFInfo
- Publication number
- CN109484646A CN109484646A CN201811620816.9A CN201811620816A CN109484646A CN 109484646 A CN109484646 A CN 109484646A CN 201811620816 A CN201811620816 A CN 201811620816A CN 109484646 A CN109484646 A CN 109484646A
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- support portion
- load
- rotation axis
- carrying
- dropping gear
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- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 5
- 239000000725 suspension Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001416181 Axis axis Species 0.000 description 1
- 230000000386 athletic effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
- B64D1/02—Dropping, ejecting, or releasing articles
- B64D1/08—Dropping, ejecting, or releasing articles the articles being load-carrying devices
- B64D1/12—Releasing
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Toys (AREA)
Abstract
The present invention provides a kind of load-carrying dropping gears of model helicopter, including first assembly and the second component, second component is located at below the first assembly and is firmly connected with it or is integrally formed, and second component includes the first support portion, the second support portion, third support portion and the 4th support portion.The load-carrying dropping gear can be realized the load-carrying and air-drop of weight, and convenient for loading, carry is stable and response speed is very fast.
Description
Technical field
The invention belongs to model plane technical fields, and in particular, to a kind of load-carrying dropping gear of model helicopter.
Background technique
Model plane technical sports are that a Raycom skill, intellectual, artistry, athletics, practicality and entertainment are integrated
Fashion sports；Have many advantages, such as small, light-weight, the unmanned damage of size, good economy performance, for tempering teen-age start
Beat one's brains ability, promote Comprehensive Quality improve, have the function of it is very positive, therefore by numerous airplane hobbyists and college learning
Raw welcome.
In aviation competitive sport, there is an event to be named as range line load-carrying air-drop.The event requires model plane fortune
The article of constant weight is carried, certain altitude drops the article in destination overhead, and returns safely.Under normal conditions, model plane are transported
The Item Weight of load is at least the several times of model plane self weight or more.Moreover, before model plane take off, the assembling and the equal having time of debugging of model plane
Limitation, it is therefore desirable to the features such as load-carrying dropping gear for delivering article is convenient for loading, and carry is stable and response speed is very fast.
Chinese utility model patent CN203753405U discloses a kind of simple delivery device for model plane load-carrying air-drop,
Including launching storehouse ontology, launches on the fuselage that storehouse ontology is set between the propeller of the model of an airplane and a pair of of wing, launch storehouse
Weight is provided in ontology.The delivery device constitutes lock construction by the way that bolt is passed through the aperture that flat ring and tabs are formed；And lead to
Weight gravity when extracting bolt is crossed to complete to launch.The delivery device combines to reach by sunpender and bolt holds weight
Effect improves load-carrying safety and reliability；It is easy to operate, facilitate air-drop, improves air-drop accuracy.However, the dispensing fills
It sets needs and operates steering engine by manpower manual, and launch storehouse ontology and belong to enclosed construction, supporting power is limited, while will affect boat
The air dynamic behaviour of mould.
Chinese utility model patent CN204452941U discloses a kind of simple and fast dispensing for model plane load-carrying air-drop
Device.In the apparatus, loads hangs on thick casing, and upper surface is contacted with fan-shaped rocker arm on the right side of operating bar, distant by stirring
Device knob is controlled, steering engine work, fan-shaped rocker arm starts to rotate, and when it rotates through 90 degree, upper surface is shaken with sector on the right side of operating bar
Arm no longer contacts, and is rotated by shaft and operating bar, and the semicircle of thick casing is linked up with the semicircle of operating bar and separated, weight by
Decline in gravity, thick casing is skidded off from thin casing, and thick casing is launched with weight, completes entire launch process.The dispensing
Apparatus structure is relatively simple, durable, and cost is relatively low, is easy to make, and can be realized quick dispensing, using fan-shaped rocker arm conduct
The switch of throwing mechanism, improves safety and reliability.However, steering engine stress is larger, and Impact direction and steering engine main shaft
The main load direction of design is inconsistent, and steering engine is easy to cause to get stuck.Moreover, load when, need model plane extension set lower part into
Operation, the loading time such as the docking of row thickness casing and hook overlap joint are longer.
In addition, model helicopter has certain advantage based on the considerations of load-carrying weight.However, with the above-mentioned prior art
It is similar, it is still desirable to find a kind of load-carrying dropping gear of new model helicopter.
Summary of the invention
The object of the present invention is to provide a kind of load-carrying dropping gear of new model helicopter, the control system load-carryings
Dropping gear is convenient for loading, and carry is stable and response speed is very fast.
In order to solve the above technical problems, the present invention is achieved by technical solution below: a kind of model helicopter
Load-carrying dropping gear, including first assembly and the second component；It is characterized in that, the first assembly top half is semicircle,
Lower half portion is rectangle；The top half is identical with the lower half portion thickness, and the first assembly includes in circle
Empty part, the center of circle of the circular hollow are overlapped with the center of circle of the top half；Second component is located at described the
It below one component and is firmly connected with it or is integrally formed, second component includes the first support portion, the second support portion, the
Three support portions and the 4th support portion, the upper ends of four support portions be connected with each other or be integrally formed and lower end spatially that
This separation；First support portion and second support portion pass through the first rotation axis connection, the outer surface cover of first rotation axis
There is the first rotating wheel, the two passes through gear engaged transmission；The third support portion and the 4th support portion pass through the second rotation
Axis connection, the second rotation axis outside are cased with the second rotating wheel, and the two passes through gear engaged transmission；First rotation axis
Middle section is located in the space that first support portion and second support portion are separated from each other, in second rotation axis
Between be partially located in the space that is separated from each other of the third support portion and the 4th support portion.
Load-carrying dropping gear according to the present invention, which is characterized in that first rotation axis and second rotation
Across a rotatable fixture block between axis, described rotatable fixture block one end is cyclic structure, is rotatably covered at described second turn
On moving axis；The other end is flat structure, on the middle section of first rotation axis, but in the longitudinal direction not over
The axis of first rotation axis.
Load-carrying dropping gear according to the present invention, which is characterized in that the is fixed on the outside of first support portion
Three components；The third component realizes the movement or static of the rotatable fixture block by controlling the first rotating wheel rotation.
Load-carrying dropping gear according to the present invention, which is characterized in that the third component includes hitching post, hitching post lid
Body, the first elastic device and two side walls.
Load-carrying dropping gear according to the present invention, which is characterized in that the side wall be equipped with the first limiting device and
Second limiting device, for fixing first elastic device.
Load-carrying dropping gear according to the present invention, which is characterized in that the first rotating wheel top position is equipped with recessed
Slot, for accommodating the end section of the hitching post.
Load-carrying dropping gear according to the present invention, which is characterized in that first rotation axis is located at the second support portion
Interior end section is equipped with the first torsionspring, and the torsionspring can control first rotation axis and turn upward or downward
It is dynamic, it is separated when 90 degree of rotation with the rotatable fixture block.
Load-carrying dropping gear according to the present invention, which is characterized in that the middle section of first rotation axis is half
Axle construction.
Structure is dropped in load-carrying according to the present invention, which is characterized in that the third support portion and the 4th support
The upper end in portion is equipped with the second torsionspring and fixing axle.
Structure is dropped in load-carrying according to the present invention, which is characterized in that second torsionspring is two-way torsional spring.
Further, the present invention also provides a kind of load-carrying dropping gear of model helicopter, the load-carrying air-drop dresses
It sets including first assembly and the second component；The first assembly top half is semicircle, and lower half portion is rectangle；The upper half
Part is identical with the lower half portion thickness, and the first assembly includes circular hollow, the circular hollow
The center of circle be overlapped with the center of circle of the top half；Second component is located at below the first assembly and the company of being secured to
It connects or is integrally formed, second component includes the first support portion, the second support portion, third support portion and the 4th support portion, institute
The upper end for stating four support portions is connected with each other or is integrally formed and lower end is spatially separated from each other；First support portion with
Second support portion is cased with the first rotating wheel by the first rotation axis connection, the first rotation axis outside, and the two passes through tooth
Wheel engaged transmission；The third support portion and the 4th support portion are by the second rotation axis connection, outside second rotation axis
Surface cover has the second rotating wheel, and the two passes through gear engaged transmission；The middle section of first rotation axis is located at described first
In the space that support part and second support portion are separated from each other, the middle section of second rotation axis is located at third support
In the space that portion and the 4th support portion are separated from each other；
Across a rotatable fixture block between first rotation axis and second rotation axis, described rotatable fixture block one end is
Cyclic structure rotatably covers in second rotation axis；The other end is flat structure, in first rotation axis
Between on part, but in the longitudinal direction not over the axis of first rotation axis；
Third component is fixed on the outside of first support portion；
The third component includes hitching post, hitching post lid, the first elastic device and two side walls；
The side wall is equipped with the first limiting device and the second limiting device, for fixing first elastic device；
The side wall is equipped with the first limiting device and the second limiting device, for fixing first elastic device；
The first rotating wheel top position is equipped with groove, for accommodating the end section of the hitching post；
First rotation axis is located at the end section in the second support portion equipped with the first torsionspring, and the torsionspring can be with
It controls first rotation axis to rotate upward or downward, be separated when 90 degree of rotation with the rotatable fixture block；
The middle section of first rotation axis is semi-axis structure；
The upper end of the third support portion and the 4th support portion is equipped with the second torsionspring and fixing axle；
Second torsionspring is two-way torsional spring.
On the other hand, the present invention also provides the load-carrying application method of the load-carrying dropping gear of above-mentioned model helicopter, packets
Include following steps,
The first assembly of the load-carrying dropping gear is suspended on the fuselage of model helicopter；
It pushes the rotatable fixture block to move upwards using the hanging ring of carrying weight, drives the first rotation axis rotation, always
It is moved to any position between first rotation axis and second torsionspring lower end；
The hanging ring stop motion is separated with the rotatable fixture block, and the latter falls under gravity to first rotation axis
On, also, second torsionspring is in tensional state；
The hitching post is inserted into the groove of the first rotating wheel top position；
The upper end of the hitching post is connected on the steering engine of the model helicopter by suspension wire, the steering engine can be drawn when rotating
It moves the suspension wire and the hitching post moves upwards.
Another aspect, the present invention also provides the air-drop application method of the load-carrying dropping gear of above-mentioned model helicopter, packets
Include following steps,
The upper end of the hitching post is connected on the steering engine of the model helicopter by suspension wire
It is rotated by steering engine described in remote control control, the suspension wire and the hitching post is pulled to move upwards；
The hitching post is separated with the groove of the first rotating wheel top position；
The first rotating wheel rotation, drives first rotation axis to rotate down；
Second extension spring quickly becomes former length again from tensional state, so that the first rotation axis rotates down 90 degree, in the mistake
Cheng Zhong, the rotatable fixture block are separated with first rotation axis；
The rotatable fixture block is separated with the hanging ring of carrying weight.
The beneficial effects of the present invention are with the load-carrying of specific structure compared with prior art, by the present invention in that dropped
Device realizes and drops position and time to load-carrying and be precisely controlled, while convenient for loading, carry is stable and response speed compared with
Fastly.
Detailed description of the invention
Fig. 1 is front view (its according to the load-carrying dropping gear of the model helicopter of a preferred embodiment of the invention
In, 1- rotatable parts；2- hitching post sleeve；3- rotation axis sleeve；4- spring；5- hitching post；6- hitching post lid；7- support portion；8- is turned round
Turn spring；9- fixing axle；The rotatable fixture block of 10-；11- torsionspring)；
Fig. 2 be according to the side view of the load-carrying dropping gear of the model helicopter of a preferred embodiment of the invention (wherein,
The second rotation axis of 12-；The second rotating wheel of 13-).
Fig. 3 is the first rotation axis according to the load-carrying dropping gear of the model helicopter of a preferred embodiment of the invention
Schematic diagram.
Fig. 4 a and Fig. 4 b are respectively the load-carrying dropping gear of the model helicopter of a preferred embodiment according to the present invention
Load-carrying and air-drop status diagram.
Specific embodiment
Hereinafter, a specific embodiment of the invention will be described in detail with reference to attached drawing, in detail according to these
Description, one of ordinary skill in the art can implement the present invention it can be clearly understood that the present invention.Former without prejudice to the present invention
In the case where reason, the feature in each different embodiment can be combined to obtain new embodiment, or substitute certain
Certain features in a little embodiments, obtain other preferred embodiments.
As shown in Figure 1, a kind of load-carrying dropping gear of the model helicopter constituted according to the preferred embodiment of the present invention, described
Load-carrying dropping gear includes first assembly and the second component；The first assembly top half is semicircle, and lower half portion is square
Shape；The top half is identical with the lower half portion thickness, and the first assembly includes circular hollow, the circle
The center of circle of shape hollow space is overlapped with the center of circle of the top half；Second component be located at below the first assembly and
It is integrally formed with it, second component (is not marked including the first support portion 7, the second support portion (not identifying), third support portion
Know) and the 4th support portion (not identifying), the upper end of four support portions is connected with each other or is integrally formed and lower end is in space
On be separated from each other；First support portion is connect with second support portion by rotatable parts 1, and the two (is not shown by gear
Engaged transmission out)；The third support portion is connect with the 4th support portion by rotatable parts, outside second rotation axis
It is cased with the second rotating wheel, the two passes through gear engaged transmission；The middle section of first rotation axis is located at first support
In the space that portion and second support portion are separated from each other, the middle section of second rotation axis is located at the third support portion
In the space being separated from each other with the 4th support portion.
Fig. 2 is to be shown according to the side view of the load-carrying dropping gear of the model helicopter of a preferred embodiment of the invention
The structure of rotatable parts, including the first rotation axis 12 and the first rotating wheel 13 are gone out, are cased with outside first rotation axis 12
One rotating wheel 13.
In one preferred embodiment of load-carrying dropping gear according to the present invention, first rotation axis and described second
Across a rotatable fixture block 10 between rotation axis, described rotatable fixture block one end is cyclic structure, is rotatably covered described
In second rotation axis 12；The other end is flat structure, on the middle section of first rotation axis, but in length direction
On not over first rotation axis axis.
It is fixed on the outside of first support portion in a preferred embodiment of load-carrying dropping gear according to the present invention
Equipped with third component；The third component realizes the fortune of the rotatable fixture block 10 by controlling the first rotating wheel rotation
It is dynamic or static.
In a preferred embodiment of load-carrying dropping gear according to the present invention, the third component include hitching post 5,
Hitching post lid 6, spring 4 and two side walls.The side wall is equipped with the first limiting device and the second limiting device, for fixing
State the first elastic device.
In a preferred embodiment of load-carrying dropping gear according to the present invention, first rotation axis is located at second
End section in support portion is equipped with torsionspring 11, the torsionspring 11 can control first rotation axis upwards or to
Lower rotation separates when 90 degree of rotation with the rotatable fixture block 10.
In a preferred embodiment of load-carrying dropping gear according to the present invention, hitching post sleeve 2 is also optionally included
With rotation axis sleeve 3.
In a preferred embodiment of load-carrying dropping gear according to the present invention, the middle part of first rotation axis
It is divided into semi-axis structure.Fig. 3 is according to the first of the load-carrying dropping gear of the model helicopter of a preferred embodiment of the invention
The schematic diagram of rotation axis.This design is conducive to that the first rotation axis is made preferably to support the rotatable fixture block in initial position
10, restriction effect is played to it, to realize the stable effect of carry.
In a preferred embodiment of load-carrying dropping gear according to the present invention, the third support portion and described the
The upper end of four support portions is equipped with two-way torsional spring 8 and fixing axle 9.This design can prevent the rotatable fixture block 10 from being rotated up
It is continued to rotate after 90 degree, similarly helps to improve the technical effect convenient for loading.
Fig. 4 a is the load condition according to the load-carrying dropping gear of the model helicopter of a preferred embodiment of the invention
Schematic diagram.In the preferred embodiment, the load-carrying method includes the following steps:
The first assembly of the load-carrying dropping gear is suspended on the fuselage of model helicopter；
It pushes the rotatable fixture block to move upwards using the hanging ring of carrying weight, drives the first rotation axis rotation, always
It is moved to any position between first rotation axis and second torsionspring lower end；
The hanging ring stop motion is separated with the rotatable fixture block, and the latter falls under gravity to first rotation axis
On, also, second torsionspring is in tensional state；
The hitching post is inserted into the groove of the first rotating wheel top position；
The upper end of the hitching post is connected on the steering engine of the model helicopter by suspension wire, the steering engine can be drawn when rotating
It moves the suspension wire and the hitching post moves upwards.
Fig. 4 b is the air-drop state according to the load-carrying dropping gear of the model helicopter of a preferred embodiment of the invention
Schematic diagram.In the preferred embodiment, the air-drop application method includes the following steps,
The upper end of the hitching post is connected on the steering engine of the model helicopter by suspension wire
It is rotated by steering engine described in remote control control, the suspension wire and the hitching post is pulled to move upwards；
The hitching post is separated with the groove of the first rotating wheel top position；
The first rotating wheel rotation, drives first rotation axis to rotate down；
Second extension spring quickly becomes former length again from tensional state, so that the first rotation axis rotates down 90 degree, in the mistake
Cheng Zhong, the rotatable fixture block are separated with first rotation axis；
The rotatable fixture block is separated with the hanging ring of carrying weight.
The beneficial effects of the present invention are with the load-carrying of specific structure compared with prior art, by the present invention in that dropped
Device realizes and drops position and time to load-carrying and be precisely controlled, while convenient for loading, carry is stable and response speed compared with
Fastly.
Although above by referring to specific embodiment, invention has been described, and one of ordinary skill in the art answer
Work as understanding, in principle disclosed by the invention and range, many modifications can be made for configuration disclosed by the invention and details.
Protection scope of the present invention is determined by the attached claims, and claim is intended to technical characteristic in claim
Equivalent literal meaning or range whole modifications for being included.
Claims (10)
1. a kind of load-carrying dropping gear of model helicopter, including first assembly and the second component；It is characterized in that, described first
Component top half is semicircle, and lower half portion is rectangle；The top half is identical with the lower half portion thickness, and institute
Stating first assembly includes circular hollow, and the center of circle of the circular hollow is overlapped with the center of circle of the top half；Institute
It states the second component to be located at below the first assembly and be firmly connected with it or be integrally formed, second component includes first
The upper end of support portion, the second support portion, third support portion and the 4th support portion, four support portions is connected with each other or one
It forms and lower end is spatially separated from each other；First support portion and second support portion pass through the first rotation axis connection,
The first rotating wheel is cased with outside first rotation axis, the two passes through gear engaged transmission；The third support portion and described the
Four support portions are cased with the second rotating wheel by the second rotation axis connection, the second rotation axis outside, and the two passes through gear and engages
Transmission；The middle section of first rotation axis is located at the space that first support portion and second support portion are separated from each other
Interior, the middle section of second rotation axis is located at the space that the third support portion and the 4th support portion are separated from each other
It is interior.
2. load-carrying dropping gear according to claim 1, which is characterized in that first rotation axis and second rotation
Across a rotatable fixture block between axis, described rotatable fixture block one end is cyclic structure, is rotatably covered at described second turn
On moving axis；The other end is flat structure, on the middle section of first rotation axis, but in the longitudinal direction not over
The axis of first rotation axis.
3. load-carrying dropping gear according to claim 1, which is characterized in that be fixed with the on the outside of first support portion
Three components；The third component realizes the movement or static of the rotatable fixture block by controlling the first rotating wheel rotation.
4. load-carrying dropping gear according to claim 3, which is characterized in that the third component includes hitching post, hitching post lid
Body, the first elastic device and two side walls.
5. load-carrying dropping gear according to claim 4, which is characterized in that the side wall be equipped with the first limiting device and
Second limiting device, for fixing first elastic device.
6. load-carrying dropping gear according to claim 4, which is characterized in that the first rotating wheel top position is equipped with recessed
Slot, for accommodating the end section of the hitching post.
7. load-carrying dropping gear according to claim 1, which is characterized in that first rotation axis is located at the second support portion
Interior end section is equipped with the first torsionspring, and the torsionspring can control first rotation axis and turn upward or downward
It is dynamic, it is separated when 90 degree of rotation with the rotatable fixture block.
8. load-carrying dropping gear according to claim 1, which is characterized in that the middle section of first rotation axis is half
Axle construction.
9. structure is dropped in load-carrying according to claim 1, which is characterized in that the third support portion and the 4th support
The upper end in portion is equipped with the second torsionspring and fixing axle.
10. structure is dropped in load-carrying according to claim 9, which is characterized in that second torsionspring is two-way torsional spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620816.9A CN109484646B (en) | 2018-12-28 | 2018-12-28 | Load air-drop device of model airplane helicopter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620816.9A CN109484646B (en) | 2018-12-28 | 2018-12-28 | Load air-drop device of model airplane helicopter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109484646A true CN109484646A (en) | 2019-03-19 |
| CN109484646B CN109484646B (en) | 2020-07-03 |
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ID=65712860
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811620816.9A Expired - Fee Related CN109484646B (en) | 2018-12-28 | 2018-12-28 | Load air-drop device of model airplane helicopter |
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| Country | Link |
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| CN (1) | CN109484646B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7934681B1 (en) * | 2010-03-09 | 2011-05-03 | Sastry Ganti | Quick connect-disconnect air transport |
| CN203753405U (en) * | 2013-12-26 | 2014-08-06 | 西安理工大学 | Simple drop device for load drop of model airplane |
| CN204452941U (en) * | 2014-12-30 | 2015-07-08 | 王洪洋 | A kind of simple and fast delivery device for model plane load-carrying air-drop |
| CA3002171A1 (en) * | 2015-10-16 | 2017-04-20 | Nutech Ventures | Fire suppression and ignition with unmanned aerial vehicles |
-
2018
- 2018-12-28 CN CN201811620816.9A patent/CN109484646B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7934681B1 (en) * | 2010-03-09 | 2011-05-03 | Sastry Ganti | Quick connect-disconnect air transport |
| CN203753405U (en) * | 2013-12-26 | 2014-08-06 | 西安理工大学 | Simple drop device for load drop of model airplane |
| CN204452941U (en) * | 2014-12-30 | 2015-07-08 | 王洪洋 | A kind of simple and fast delivery device for model plane load-carrying air-drop |
| CA3002171A1 (en) * | 2015-10-16 | 2017-04-20 | Nutech Ventures | Fire suppression and ignition with unmanned aerial vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109484646B (en) | 2020-07-03 |
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