CN108945478B - Unmanned aerial vehicle's umbrella opening device - Google Patents
Unmanned aerial vehicle's umbrella opening device Download PDFInfo
- Publication number
- CN108945478B CN108945478B CN201810921082.1A CN201810921082A CN108945478B CN 108945478 B CN108945478 B CN 108945478B CN 201810921082 A CN201810921082 A CN 201810921082A CN 108945478 B CN108945478 B CN 108945478B
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- Prior art keywords
- cover
- cover body
- unmanned aerial
- umbrella
- aerial vehicle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/80—Parachutes in association with aircraft, e.g. for braking thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U70/00—Launching, take-off or landing arrangements
- B64U70/80—Vertical take-off or landing, e.g. using rockets
- B64U70/83—Vertical take-off or landing, e.g. using rockets using parachutes, balloons or the like
Abstract
An umbrella opening device of an unmanned aerial vehicle, comprising: the parachute cabin is positioned inside the unmanned aerial vehicle body and used for accommodating the parachute, and an opening is formed in the bottom of the unmanned aerial vehicle body; the umbrella cabin cover comprises a first cover body and a second cover body, when the umbrella cabin cover is closed, the first cover body and the second cover body are mutually attached to cover the opening, and when the umbrella cabin cover is opened, the first cover body and the second cover body are mutually separated and are respectively unfolded towards two opposite sides; and the locking mechanism is used for controlling the opening or closing of the parachute cabin cover. According to the unmanned aerial vehicle umbrella opening device, the downward throwing type umbrella opening mode and the opposite opening type umbrella cabin cover are adopted, so that the safety of the umbrella opening device is improved, and the success rate of opening the umbrella is effectively improved.
Description
Technical Field
The invention relates to the field of parachute landing recovery of unmanned aerial vehicles, in particular to an parachute opening device of an unmanned aerial vehicle.
Background
Unmanned aerial vehicles are called "unmanned aerial vehicles" for short, and the application fields of unmanned aerial vehicles are increasingly wide in recent years, and most unmanned aerial vehicles need to be ensured to safely return to the ground and to recover the whole machine and airborne equipment after finishing work. The existing common unmanned aerial vehicle recovery mode comprises landing gear running landing recovery, net collision recovery, parachute landing recovery, air cushion landing recovery and the like.
For the parachute recovery mode, the parachute opening mode of the unmanned aerial vehicle commonly used at present is generally divided into an upward-throwing type parachute opening mode and a downward-throwing type parachute opening mode. Because the parachute is placed in the parachute cabin, the traditional downward-throwing parachute opening has the possibility of failure in parachute opening caused by factors such as inflexible connection of metal hinges, unstable flying posture of the unmanned aerial vehicle and the like; meanwhile, after the parachute cabin cover is opened, the risk of disturbing the parachute ropes exists due to the reasons of air flow and the like, so that the parachute is easy to wind with the machine body, and a flight accident occurs.
Disclosure of Invention
In order to improve the reliability of the unmanned aerial vehicle umbrella opening device, the invention discloses an unmanned aerial vehicle umbrella opening device, which is characterized by comprising the following components:
the parachute cabin is positioned inside the unmanned aerial vehicle body and used for accommodating the parachute, and an opening is formed in the bottom of the unmanned aerial vehicle body;
the umbrella cabin cover comprises a first cover body and a second cover body, when the umbrella cabin cover is closed, the first cover body and the second cover body are mutually attached to cover the opening, and when the umbrella cabin cover is opened, the first cover body and the second cover body are mutually separated and are respectively unfolded towards two opposite sides;
and the locking mechanism is used for controlling the opening or closing of the parachute cabin cover.
In some embodiments, the canopy is part of the skin of the unmanned aerial vehicle, the locking mechanism is disposed inside the skin of the unmanned aerial vehicle, and when the canopy is closed, the canopy is smoothly connected with the unmanned aerial vehicle body.
In some embodiments, the first cover body and the second cover body are hinged between the unfolded side of the first cover body and the skin of the unmanned aerial vehicle through one or more pin shafts, torsion springs are arranged on the pin shafts,
when the umbrella cabin cover is closed, the torsion spring generates elastic deformation; when the locking mechanism is unlocked to open the parachute cabin cover, the torsion spring assists the first cover body or the second cover body to be unfolded under the action of elastic force.
In some embodiments, the torsion spring is in a relaxed state such that the first cover or the second cover forms an included angle with the skin surface of the corresponding unmanned aerial vehicle of greater than 90 degrees.
In some embodiments, the first cover is a segmented structure comprising a first component, a second component, and a third component; when the first cover body is unfolded, a certain angle is formed between the first part and the second part and between the second part and the third part, so that a windward area is generated in the direction opposite to the air flow;
the second cover body and the first cover body are of symmetrical structures.
In some embodiments, the first part and the second part, the second part and the third part are hinged with the skin of the unmanned aerial vehicle through one or more pins, and torsion springs are arranged on the pins;
when the umbrella cabin cover is closed, the torsion spring generates elastic deformation; when the locking mechanism is unlocked to open the parachute cabin cover, the torsion spring assists the first cover body to be unfolded under the action of elastic force, and a certain angle is formed between the first part and the second part and between the second part and the third part;
the second cover body and the first cover body are of symmetrical structures.
In some embodiments, when the canopy is closed, the first part is fixedly connected with the skin of the unmanned aerial vehicle through the locking mechanism so as to lock the first cover body; the locking mode of the second cover body is the same as that of the first cover body.
In some embodiments, the locking mechanism includes a first locking portion and a second locking portion that are identical in structure for locking one of the first cover and the second cover, respectively.
Based on the technical scheme, the invention has at least the following beneficial effects:
according to the parachute opening device of the unmanned aerial vehicle, a downward throwing type parachute opening mode is adopted, and after the parachute cabin cover is opened, the parachute can drop and be opened due to self gravity, so that parts, such as a parachute gun, a parachute shooting barrel and the like, which are prone to potential safety hazards are omitted, the safety of the parachute opening device is improved, and the total weight of the unmanned aerial vehicle is reduced; meanwhile, the split type parachute cabin cover is adopted, so that the covering of the parachute cabin cover on the opening of the parachute cabin after the parachute is opened is reduced, the parachute can be smoothly separated from the parachute cabin, the possibility of winding the parachute and the machine body is reduced, and the success rate of parachute opening is effectively improved; in addition, the umbrella cabin cover is inseparable with the unmanned aerial vehicle organism, has increased the reusability of parachute opening device to use cost has been reduced.
Drawings
FIG. 1 is a schematic view of an umbrella opening device of an unmanned aerial vehicle in an embodiment of the invention;
FIG. 2 is a schematic view of the parachute opening device of FIG. 1 in a closed condition of the canopy;
FIGS. 3a and 3b are schematic views of the opening device of FIG. 1 in a state in which the canopy is not fully opened;
fig. 4 is a schematic view of the opening device of fig. 1 after the canopy is fully opened.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
Fig. 1 shows an opening device of an unmanned aerial vehicle according to an embodiment of the invention, which comprises an umbrella cabin 5, an umbrella cabin cover and a locking mechanism 3 as shown in fig. 1. The parachute cabin 5 is located inside the unmanned aerial vehicle body and is provided with an opening in the bottom of the unmanned aerial vehicle body. The parachute is placed in the parachute cabin 5 at ordinary times; when the parachute is needed, the parachute falls down from the opening of the parachute cabin and is unfolded. The umbrella hatch is a split umbrella hatch and comprises a first cover body 4 and a second cover body 6. The umbrella cabin cover is closed at ordinary times, and the first cover body 4 and the second cover body 6 are mutually attached to cover the opening of the umbrella cabin; when the parachute is needed to be used, the parachute cabin cover is opened, the first cover body 4 and the second cover body 6 are separated from each other and are respectively unfolded to the opposite sides, so that the parachute can fall down and be unfolded through the opening of the parachute cabin. The locking mechanism 3 is used for controlling the opening or closing of the umbrella hatch.
According to the parachute opening device of the unmanned aerial vehicle, which is provided by the embodiment of the invention, a downward throwing type parachute opening mode is adopted, and after the parachute cabin cover is opened, the parachute can drop and be opened due to self gravity, so that parts, such as a parachute gun, a parachute barrel and the like, which are prone to potential safety hazards are omitted, the safety of the parachute opening device is improved, and the total weight of the unmanned aerial vehicle is reduced; meanwhile, the split type parachute cabin cover is adopted, so that the covering of the parachute cabin cover to the opening of the parachute cabin after the parachute is opened is reduced, the parachute can be smoothly separated from the parachute cabin, the possibility of winding the parachute and the machine body is reduced, and the success rate of parachute opening is effectively improved. In addition, the umbrella cabin cover is inseparable with the unmanned aerial vehicle organism, has increased the reusability of parachute opening device to use cost has been reduced.
According to some embodiments, the canopy is part of the skin 1 of the unmanned aerial vehicle, the locking mechanism 3 is arranged on the inner side of the skin 1 of the unmanned aerial vehicle, and when the canopy is closed, the canopy is smoothly connected with the unmanned aerial vehicle body. Through the arrangement, the radian of smooth connection is formed between the umbrella cabin cover and the machine body outline, and the aerodynamic characteristics of the unmanned aerial vehicle can be guaranteed to the greatest extent.
According to some embodiments, the umbrella opening device further comprises a plurality of hinge structures 2, and further as shown in fig. 2, the first cover 4 and the second cover 6 are hinged between the unfolded sides thereof and the skin 1 of the unmanned aerial vehicle through one or more pins 21, respectively. For example, to improve the stability of the hinge, the number of pins 21 used between each cover and the unmanned skin 1 may be two.
Further, a torsion spring is provided on the pin 21, for example, the torsion spring may be fixed in a detent at the pin 21. When the umbrella cabin cover is closed, the torsion spring generates elastic deformation; when the locking mechanism 3 is unlocked to open the canopy, the torsion spring assists the first cover 4 or the second cover 6 to be unfolded by the elastic force.
The torsion spring at the pin 21 can be designed to have a specific angle degree according to the specific shape of the body, and preferably, the first cover 4 or the second cover 6 and the surface of the skin 1 of the unmanned aerial vehicle form an angle greater than 90 degrees when the torsion spring is in a loose state.
Through the design, the first cover body 4 and the second cover body 6 are in an upturned shape when being completely opened under the action of the torsion springs, so that the covering of the parachute cabin cover on the opening of the parachute cabin after the parachute is opened is reduced, the parachute can be smoothly separated from the parachute cabin, and the possibility of winding the parachute with the machine body is reduced.
According to some embodiments, with further reference to fig. 3a and 3b, the first cover 4 is of a segmented construction comprising a first part 41, a second part 42 and a third part 43; when the first cover 4 is unfolded, a certain angle is formed between the first part 41 and the second part 42 and between the second part 42 and the third part 43, so as to generate a windward area in the direction opposite to the air flow.
The second cover 6 and the first cover 4 are symmetrical in structure, and can also generate a windward area.
For example, the first, second and third members 41, 42 and 43 may have a triangular structure as shown in fig. 2 and 3b, which together form the rectangular first cover 4.
Preferably, the first part 41 and the second part 42 are hinged, and the second part 42 and the third part 43 are hinged through one or more pins 22; the third part 43 is hinged with the skin 1 of the unmanned aerial vehicle by one or more pins 21. For example, to increase the stability of the hinge, the number of pins 22 used between two hinged parts may be two.
Further, a torsion spring is also provided on the pin 22, for example, the torsion spring may be fixed in a detent at the pin 22. When the umbrella hatch is opened, the torsion spring at the pin 22 forms the angle between the first part 41 and the second part 42 and between the second part 42 and the third part 43 under the action of elastic force so as to generate windward area in the direction opposite to the airflow.
The second cover 6 also includes corresponding arrangements for the pin and torsion spring.
Through the arrangement, as shown in fig. 3a, 3b and 4, in the process of from incomplete deployment to complete deployment, the canopy can generate a windward area in the opposite airflow direction, and the unmanned aerial vehicle can generate resistance to the canopy in flight, so as to promote the sectional deployment of the first component 41, the second component 42 and the third component 43 of the first cover 4 (the second cover 6 is the same), thus ensuring the smooth opening of the canopy.
According to some embodiments, as shown in fig. 2, when the canopy is closed, only the first part 41 is secured to the skin 1 of the unmanned aerial vehicle by the locking mechanism 3 to lock the first cover 4; the second cover 6 is locked in the same way as the first cover 4. Preferably, the locking mechanism 3 includes a first locking portion and a second locking portion, which are identical in structure, for locking one of the first cover 4 and the second cover 6, respectively. The locking mechanism 3 may be an electronic lock, or may adopt other locking modes.
The unmanned aerial vehicle umbrella opening device is particularly suitable for being applied to supersonic unmanned aerial vehicles. The supersonic unmanned aerial vehicle has the characteristics of small aspect ratio, small body volume, small body weight, high maneuvering performance and the like. Because of the characteristics, the supersonic unmanned aerial vehicle has strict limit on structural weight during structural design, and no structural allowance is reserved for structural components required by landing gear and the like for landing, so that landing gear landing recovery cannot be adopted. Because of the limitations, supersonic unmanned aerial vehicles generally take off in a rocket boosting mode and are generally recycled by using a parachute recycling mode. The existing parachute recovery mode is not safe and reliable enough, the supersonic unmanned aerial vehicle is high in price, and once a flight accident occurs, large losses are caused. Therefore, the unmanned aerial vehicle umbrella opening device provided by the invention can obviously improve the safety of the umbrella opening device and avoid accidents.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the invention thereto, but to limit the invention thereto, and any modifications, equivalents, improvements and equivalents thereof may be made without departing from the spirit and principles of the invention.
Claims (6)
1. An umbrella opening device of an unmanned aerial vehicle, comprising:
the parachute cabin is positioned inside the unmanned aerial vehicle body and used for accommodating the parachute, and an opening is formed in the bottom of the unmanned aerial vehicle body;
the umbrella cabin cover comprises a first cover body and a second cover body, when the umbrella cabin cover is closed, the first cover body and the second cover body are mutually attached to cover the opening, and when the umbrella cabin cover is opened, the first cover body and the second cover body are mutually separated and are respectively unfolded towards two opposite sides;
the locking mechanism is used for controlling the opening or closing of the parachute cabin cover;
the umbrella cabin cover is a part of the skin of the unmanned aerial vehicle, the locking mechanism is arranged on the inner side of the skin of the unmanned aerial vehicle, and when the umbrella cabin cover is closed, the umbrella cabin cover is smoothly connected with the unmanned aerial vehicle body;
the first cover body is of a sectional structure and comprises a first part, a second part and a third part; when the first cover body is unfolded, a certain angle is formed between the first part and the second part and between the second part and the third part, so that a windward area is generated in the direction opposite to the air flow;
the second cover body and the first cover body are of symmetrical structures.
2. The umbrella opening device according to claim 1, wherein the first cover body and the second cover body are hinged with the skin of the unmanned aerial vehicle through one or more pin shafts respectively at one unfolding side of the first cover body and the second cover body, torsion springs are arranged on the pin shafts,
when the umbrella cabin cover is closed, the torsion spring generates elastic deformation; when the locking mechanism is unlocked to open the parachute cabin cover, the torsion spring assists the first cover body or the second cover body to be unfolded under the action of elastic force.
3. The umbrella opening device of claim 2, wherein the torsion spring, when in a relaxed state, causes the first cover or the second cover to form an included angle of greater than 90 degrees with the skin surface of the corresponding unmanned aerial vehicle.
4. The umbrella opening device according to claim 1, wherein the first part and the second part, the second part and the third part are hinged through one or more pin shafts, and torsion springs are arranged on the pin shafts;
when the umbrella cabin cover is closed, the torsion spring generates elastic deformation; when the locking mechanism is unlocked to open the parachute cabin cover, the torsion spring assists the first cover body to be unfolded under the action of elastic force, and a certain angle is formed between the first part and the second part and between the second part and the third part;
the second cover body and the first cover body are of symmetrical structures.
5. The parachute opening device according to claim 1 or 4, wherein when the parachute cover is closed, the first part is fixedly connected with the skin of the unmanned aerial vehicle through the locking mechanism so as to lock the first cover body; the locking mode of the second cover body is the same as that of the first cover body.
6. The umbrella opening device of claim 5, wherein the locking mechanism comprises a first locking portion and a second locking portion, the first locking portion and the second locking portion being identical in structure for locking one of the first cover and the second cover, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921082.1A CN108945478B (en) | 2018-08-14 | 2018-08-14 | Unmanned aerial vehicle's umbrella opening device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810921082.1A CN108945478B (en) | 2018-08-14 | 2018-08-14 | Unmanned aerial vehicle's umbrella opening device |
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| CN108945478A CN108945478A (en) | 2018-12-07 |
| CN108945478B true CN108945478B (en) | 2023-09-12 |
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| CN201810921082.1A Active CN108945478B (en) | 2018-08-14 | 2018-08-14 | Unmanned aerial vehicle's umbrella opening device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109455302B (en) * | 2018-12-10 | 2023-08-29 | 彩虹无人机科技有限公司 | Emergency recovery umbrella system suitable for medium-and-large-sized unmanned aerial vehicle |
| CN109774955B (en) * | 2019-03-06 | 2022-01-25 | 成都飞机工业（集团）有限责任公司 | Double-door embedded resistance umbrella cabin structure |
| CN111717374A (en) * | 2020-05-22 | 2020-09-29 | 成都飞机工业（集团）有限责任公司 | Small and medium-sized unmanned aerial vehicle of gasbag landing formula can throw flap structure |
| CN113264193B (en) * | 2021-05-18 | 2023-03-28 | 沃飞长空科技(成都)有限公司 | Parachute assembly, structure and system for unmanned aerial vehicle and control method of parachute assembly, structure and system |
| CN114933008A (en) * | 2022-05-23 | 2022-08-23 | 成都飞机工业（集团）有限责任公司 | Embedded drag parachute cabin lifting structure and resetting method thereof |
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| CN106507752B (en) * | 2007-11-27 | 2012-07-25 | 成都飞机工业（集团）有限责任公司 | SUAV umbrella hatchcover |
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| CN206797741U (en) * | 2017-05-22 | 2017-12-26 | 中国原子能科学研究院 | A kind of throwing device on unmanned vehicle |
| KR20180064155A (en) * | 2016-12-05 | 2018-06-14 | 주식회사 헥사팩토리 | Apparatus for Preventing Drop Accident of Drone, and Method for Controlling the Same |
| CN208731229U (en) * | 2018-08-14 | 2019-04-12 | 中国科学院工程热物理研究所 | The parachute opener of unmanned plane |
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| CN106507752B (en) * | 2007-11-27 | 2012-07-25 | 成都飞机工业（集团）有限责任公司 | SUAV umbrella hatchcover |
| CN202609086U (en) * | 2012-05-03 | 2012-12-19 | 西安大地测绘工程有限责任公司 | Downwards-throwing popup type parachute opening device of unmanned plane |
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| CN108945478A (en) | 2018-12-07 |
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