CN113120212B - Propulsion support and stratospheric airship - Google Patents
Propulsion support and stratospheric airship Download PDFInfo
- Publication number
- CN113120212B CN113120212B CN202110343226.1A CN202110343226A CN113120212B CN 113120212 B CN113120212 B CN 113120212B CN 202110343226 A CN202110343226 A CN 202110343226A CN 113120212 B CN113120212 B CN 113120212B
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- load
- bearing
- propulsion
- bracket
- frame
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- 230000007704 transition Effects 0.000 claims abstract description 30
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 24
- 239000004917 carbon fiber Substances 0.000 claims abstract description 24
- 238000009954 braiding Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 210000001015 abdomen Anatomy 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/06—Rigid airships; Semi-rigid airships
- B64B1/24—Arrangement of propulsion plant
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
本发明提供一种推进支架及一种平流层飞艇。本发明提供的推进支架包括：承力支架，所述承力支架的顶部安装有过渡架，所述承力支架和所述过渡架采用三维多向编织的碳纤维管构成。本发明提供的推进支架，通过采用三维多向编织的碳纤维管构成过渡架和承力支架，解决了平流层飞艇大尺度动力推进支架重量较重的问题，减轻了推进支架的自重，降低了平流层飞艇的负荷，提高了平流层飞艇的动力推进效率。同时，降低了推进支架与平流层飞艇艇体耦合时的疲劳响应，耦合处应力集中的问题得到了有效改善。
The present invention provides a propulsion bracket and a stratospheric airship. The propulsion bracket provided by the present invention comprises: a load-bearing bracket, a transition frame is installed on the top of the load-bearing bracket, and the load-bearing bracket and the transition frame are composed of three-dimensional multi-directional woven carbon fiber tubes. The propulsion bracket provided by the present invention solves the problem of heavy weight of large-scale power propulsion brackets of stratospheric airships by using three-dimensional multi-directional woven carbon fiber tubes to form the transition frame and the load-bearing bracket, reduces the dead weight of the propulsion bracket, reduces the load of the stratospheric airship, and improves the power propulsion efficiency of the stratospheric airship. At the same time, the fatigue response of the propulsion bracket when coupled with the stratospheric airship body is reduced, and the problem of stress concentration at the coupling point is effectively improved.
Description
Technical Field
The invention relates to the technical field of power propulsion, in particular to a propulsion bracket and a stratospheric airship.
Background
The stratospheric airship has the excellent performances of high flying height, large load capacity, long flying time and the like, has stable platform performance and strong technical reliability, can be provided with different types of monitoring and detecting equipment such as communication and navigation equipment, infrared cameras, early warning radars and the like, and has important civil and military values.
The propulsion system is an important component of the airship and mainly consists of a power propulsion bracket and a power propeller. At present, a power propulsion support mainly adopts a metal structural design, and in the process of large-scale development of stratospheric airships, the required propulsion support structural system is huge in size, if the traditional metal structural design is continuously adopted, huge weight cost is required to be paid, the problem of relatively large stress concentration can be generated under the action of dynamic load when the power propulsion support is coupled with a airship body, and meanwhile, the problem of fatigue response of the coupling of the structure and the airship body is also relatively outstanding. Based on this, it is desirable to provide a new type of lightweight propulsion stent.
Disclosure of Invention
The invention provides a propulsion bracket and a stratospheric airship, which are used for solving the defect of larger weight of the propulsion bracket in the prior art.
The present invention provides a pusher carriage comprising: the bearing support, the transition frame is installed at bearing support's top, bearing support with the transition frame adopts three-dimensional multidirectional braided carbon fiber tube to constitute.
According to the propulsion bracket provided by the invention, the carbon fiber tube is made of the material T800.
According to the propulsion support provided by the invention, the bearing support comprises a bearing frame and a plurality of first bearing rods, wherein the plurality of first bearing rods are arranged around the bearing frame and are connected with the bearing frame through a multidirectional joint.
According to the propulsion bracket provided by the invention, the force-bearing frame comprises three frame units which are arranged in parallel, the areas of the three frame units are gradually reduced from the top layer to the bottom layer, each frame unit is composed of a plurality of second force-bearing rods, and two adjacent frame units are connected through the second force-bearing rods.
According to the propulsion bracket provided by the invention, the first licker-in is arranged at two ends of the first force-bearing rod, the first licker-in is provided with the internal thread, and the first force-bearing rod is in threaded connection with the transition bracket.
According to the propulsion bracket provided by the invention, the two ends of the second force-bearing rod are provided with the second licker-in, the second licker-in is provided with external threads, and the second force-bearing rod is in threaded connection with the transition bracket.
According to the propulsion bracket provided by the invention, the first bearing rod and the second bearing rod are three-dimensional five-direction braided carbon fiber tubes, the braiding angle of the first bearing rod is 15 degrees, and the braiding angle of the second bearing rod is plus 45 degrees or minus 45 degrees.
According to the propulsion bracket provided by the invention, the wall thickness of the first bearing rod is 3mm, and the wall thickness of the second bearing rod is 2.5mm.
According to the propulsion bracket provided by the invention, the propulsion bracket further comprises a motor mounting plate, wherein the motor mounting plate is mounted at the bottom of the bearing bracket, and the first bearing rod is in threaded connection with the motor mounting plate.
The invention also provides a stratospheric airship comprising the propulsion bracket as described above, the propulsion bracket being mounted on the stratospheric airship.
According to the propulsion bracket provided by the invention, the transition bracket and the bearing bracket are formed by adopting the three-dimensional multidirectional braided carbon fiber tube, so that the problem that the large-scale power propulsion bracket of the stratospheric airship is heavy in weight is solved, the dead weight of the propulsion bracket is lightened, the load of the stratospheric airship is reduced, and the power propulsion efficiency of the stratospheric airship is improved. Simultaneously, fatigue response when the propulsion bracket is coupled with the stratospheric airship body is reduced, and the problem of stress concentration at the coupling position is effectively improved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of a propulsion stent provided by the present invention;
FIG. 2 is a schematic structural view of the transition frame shown in FIG. 1;
FIG. 3 is a schematic view of the first load beam shown in FIG. 1;
FIG. 4 is a schematic view of the structure of the load carrier shown in FIG. 1;
FIG. 5 is a schematic structural view of a multi-way joint;
FIG. 6 is a schematic view of the structure of the first licker-in;
FIG. 7 is a schematic structural view of a second load bar;
FIG. 8 is a schematic view of the structure of a second licker-in;
FIG. 9 is a schematic structural view of the motor mounting plate shown in FIG. 1;
FIG. 10 is a schematic structural view of a stratospheric airship and propulsion brackets;
Reference numerals:
10: a transition frame; 20: a motor mounting plate; 30: a force-bearing bracket;
31: a first load-bearing bar; 32: a bearing frame; 33: a second load-bearing rod;
40: a multi-directional joint; 100: advancing the stent; 200: stratospheric airship;
311: a first licker-in; 331: and a second licker-in.
Detailed Description
For the purpose of making 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 with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The propulsion stent and stratospheric airship of the present invention will be described below with reference to fig. 1-10.
As shown in fig. 1, in one embodiment of the present invention, a pusher carriage 100 includes: a transition frame 10 and a load bearing frame 30. The transition frame 10 is installed at the top of the bearing support 30, and the bearing support 30 and the transition frame 10 are formed by adopting three-dimensional multidirectional braided carbon fiber tubes.
Specifically, the transition frame 10 is mounted on top of the outriggers 30, and the transition frame 10 is mounted under the belly or hull aft of the stratospheric airship 200. Generally, the overhanging dimension of the propulsion bracket 100 is 2-2.5 times of the radius of the propeller, and the power propulsion efficiency of the stratospheric airship 200 can be effectively improved by adopting the design scheme of the small-size multi-propeller multi-propulsion bracket 100. Because the pushing support 100 is larger in size, the bearing support 30 and the transition support 10 are formed by three-dimensional multi-directional braided carbon fiber tubes, the three-dimensional multi-directional braided carbon fiber tubes are light in weight, and the carbon fiber tubes are hollow structures, so that the weight of the pushing support 100 can be reduced to the greatest extent compared with the pushing support 100 made of metal materials.
Further, the carbon fiber tube may be selected from a variety of braided configurations. Specifically, there is a three-dimensional five-way weave configuration, or a three-dimensional seven-way weave configuration. Meanwhile, according to the rotating speed of the propeller and the rotating power of the motor, the wall thickness and the fiber volume content of the carbon fiber tube can be set in various ways so as to meet the rigidity and strength requirements of the carbon fiber tube. Meanwhile, the weaving angle of the carbon fiber tube can be set in various ways.
Further, as shown in fig. 2, the transition frame 10 is integrally formed of three-dimensional multi-directional woven carbon fiber pipe, and the middle of the transition frame 10 is formed with an arc shape to be attached to the belly of the stratospheric airship 200.
According to the propulsion bracket provided by the embodiment of the invention, the transition bracket and the bearing bracket are formed by adopting the three-dimensional multidirectional braided carbon fiber tube, so that the problem that the large-scale power propulsion bracket of the stratospheric airship is heavy in weight is solved, the dead weight of the propulsion bracket is lightened, the load of the stratospheric airship is reduced, and the power propulsion efficiency of the stratospheric airship is improved. Simultaneously, fatigue response when the propulsion bracket is coupled with the stratospheric airship body is reduced, and the problem of stress concentration at the coupling position is effectively improved.
Further, in one embodiment of the present invention, the carbon fiber tube adopts a three-dimensional five-way braiding process, wherein the material of the carbon fiber tube is T800.
As shown in fig. 3 and 4, in one embodiment of the present invention, the load carrier 30 includes a load carrier 32 and a plurality of first load bars 31. The plurality of first bearing rods 31 are disposed around the bearing frame 32 and connected to the bearing frame 32 through the multi-directional joints 40.
Specifically, the first bearing rod 31 is a main bearing rod, and the bearing frame 32 is a secondary bearing structure. The bearing frames 32 are of a multi-layer structure arranged in parallel, and the areas of each layer of the bearing frames 32 can be equal, so that the bearing frames 32 are of a rectangular structure, and correspondingly, the areas of each layer of the bearing frames 32 can be gradually reduced, so that the bearing frames 32 are of a triangular structure. The plurality of first bearing rods 31 are arranged around the bearing frame 32 to support the bearing frame 32.
Further, in one embodiment of the present invention, the load-bearing frame 32 includes three parallel frame units, the areas of the three frame units gradually decrease from the top layer to the bottom layer, each frame unit is formed by a plurality of second load-bearing bars 33, and two adjacent frame units are also connected by the second load-bearing bars 33.
Specifically, each frame unit is composed of a plurality of second bearing rods 33, the second bearing rods 33 are secondary bearing rods, and the plurality of second bearing rods 33 are connected in the transverse direction and the longitudinal direction to form a plurality of connected frame units. In this embodiment, when the first bearing rods 31 are connected with the bearing frame 32, each first bearing rod 31 is disposed in an inclined state with respect to the horizontal plane, so as to improve the rigidity and strength of the overall structure of the propulsion bracket 100. Further, in the present embodiment, the top layer frame units have the largest area and the bottom layer frame units have the smallest area, and when the propulsion bracket 100 is installed below the stratospheric airship 200, the top layer frame units are close to the hull of the stratospheric airship 200 and the bottom layer frame units are far from the hull of the stratospheric airship 200, so as to reduce the air resistance experienced by the propulsion bracket 100. Alternatively, the first load-bearing bar 31 and the second load-bearing bar 33 are connected using a multi-way joint 40.
As shown in fig. 5, the multi-directional joint 40 is a six-directional joint, and each joint may be connected to the first bearing rod 31 or the second bearing rod 33, and the second bearing rods 33 may also be connected through the multi-directional joint 40 to form the transversely and longitudinally connected bearing frame 32.
Further, in an embodiment of the present invention, optionally, the first force-bearing rod 31 and the second force-bearing rod 32 are all three-dimensional five-way braided carbon fiber tubes, where the braiding angle of the first force-bearing rod 31 is 15 ° and the fiber volume content is 60%; the braiding angle of the second load-bearing rod 33 is plus 45 degrees or minus 45 degrees, and the fiber volume content is 60 percent. The wall thickness of the first load-bearing bar 31 was 3mm and the wall thickness of the second load-bearing bar 33 was 2.5mm. Further, the wall thickness and the fiber volume content of the first force-bearing rod 31 and the second force-bearing rod 33 can be designed correspondingly according to the rotation speed of the propeller and the rotation power of the motor, and before the propulsion bracket 100 is actually applied, the tensile and compressive rigidity, the strength performance test and the analysis of the first force-bearing rod 31 and the second force-bearing rod 33 are required to evaluate the mechanical performance in quasi-static state and dynamic state.
According to the propulsion bracket provided by the embodiment of the invention, the wall thickness and the fiber volume content of the carbon fiber tube forming the propulsion bracket can be designed according to different propulsion power and propeller rotating speeds, so that the requirements of rigidity and fatigue resistance of the propulsion bracket are met, and a reliable technical support is provided for stratospheric airship flying over night and day.
As shown in fig. 6, in one embodiment of the present invention, the first licker-in 311 is disposed at two ends of the first force-bearing rod 31, and the first licker-in 311 is internally provided with internal threads, so that the first force-bearing rod 31 is connected with the transition frame 10 through threads. Specifically, the first licker-in 311 is made of titanium alloy, the first licker-in 311 is internally provided with internal threads, and when the first force-bearing rod 31 is connected with the transition frame 10, the bolt passes through a preset hole on the transition frame 10 to be connected with the internal threads formed inside the first licker-in 311 in a matching manner.
As shown in fig. 7 and 8, in one embodiment of the present invention, the second licker-in 331 is provided at both ends of the second force-bearing rod 33, and external threads are formed at the outside of the second licker-in 331, and the second force-bearing rod 33 is connected with the transition frame 10 through threads.
Specifically, the second licker-in 331 is made of titanium alloy, the outside of one end of the second licker-in 331 is covered with the licker-in, the outside of the other end is formed with external threads, and the end with the external threads is located at the end of the second force-bearing rod 33. When the force-bearing bracket 30 is connected with the transition frame 10, that is, when the second force-bearing rod 33 positioned at the lower part of the force-bearing bracket 30 is connected with the transition frame 10, the external threads outside the second licker-in 331 are in fit connection with the preset holes on the transition frame 10.
In one embodiment of the present invention, as shown in fig. 9, the propulsion bracket 100 further includes a motor mounting plate 20, the motor mounting plate 20 is mounted on the bottom of the bearing bracket 30, and the first bearing rod 31 is screwed with the motor mounting plate 20.
Specifically, the motor mounting plate 20 is used to mount a propeller motor.
The propulsion support provided by the embodiment of the invention realizes the light-weight design of the power propulsion support to the greatest extent, and improves the power propulsion efficiency of the stratospheric airship. Meanwhile, carbon fiber tubes with different braiding configurations, different braiding angles and different fiber volume contents can be designed according to the power of the generator, the rotating speed of the propeller and the size of the propeller, so that different propulsion brackets are designed, the applicability of the propulsion brackets is improved, and the requirements of various working conditions of the stratospheric airship are met.
As shown in fig. 10, an embodiment of the present invention also provides a stratospheric airship 200 including propulsion brackets 100. Specifically, the propulsion bracket 100 is mounted on the stratospheric airship 200, and the propulsion bracket 100 is used for mounting power propulsion equipment of the stratospheric airship 200 to provide propulsion power for the stratospheric airship 200. The propulsion brackets 100 may be mounted on the belly of the stratospheric airship 200, or may be mounted on both sides of the hull or on the tail of the hull of the stratospheric airship 200.
According to the stratospheric airship provided by the embodiment of the invention, the self weight of the propulsion bracket is reduced by arranging the propulsion bracket into the carbon fiber structure, the propulsion efficiency of the stratospheric airship is improved, and a reliable technical support is provided for stratospheric airship flying over the day and night.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343226.1A CN113120212B (en) | 2021-03-30 | 2021-03-30 | Propulsion support and stratospheric airship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343226.1A CN113120212B (en) | 2021-03-30 | 2021-03-30 | Propulsion support and stratospheric airship |
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| Publication Number | Publication Date |
|---|---|
| CN113120212A CN113120212A (en) | 2021-07-16 |
| CN113120212B true CN113120212B (en) | 2024-11-22 |
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| CN202110343226.1A Active CN113120212B (en) | 2021-03-30 | 2021-03-30 | Propulsion support and stratospheric airship |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215245458U (en) * | 2021-03-30 | 2021-12-21 | 中国科学院空天信息创新研究院 | Propulsion support and stratospheric airship |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002531327A (en) * | 1998-12-11 | 2002-09-24 | サウスウエスト・リサーチ・インスティチュート | Autonomous stratospheric airship |
| CN105923139A (en) * | 2016-05-24 | 2016-09-07 | 东莞市中航华讯卫星技术有限公司 | Stratosphere airship |
| CN108382558A (en) * | 2018-03-19 | 2018-08-10 | 中国科学院光电研究院 | A kind of stratospheric airship gondola |
| CN209600781U (en) * | 2019-02-28 | 2019-11-08 | 北京空天高科技有限公司 | A kind of mount for power system of stratospheric airship |
| CN109693778A (en) * | 2019-02-28 | 2019-04-30 | 北京空天高科技有限公司 | A kind of stratospheric airship |
| CN111547223B (en) * | 2020-06-01 | 2021-07-20 | 中国科学院空天信息创新研究院 | System, method and airship for stratospheric airship yaw control |
| CN111942563A (en) * | 2020-09-18 | 2020-11-17 | 北京空天高科技有限公司 | Stratospheric airship with vector thrust system for adjusting flight pitching attitude |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215245458U (en) * | 2021-03-30 | 2021-12-21 | 中国科学院空天信息创新研究院 | Propulsion support and stratospheric airship |
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