CN103441322A - Extendable tower-shaped satellite antenna framework structure - Google Patents
Extendable tower-shaped satellite antenna framework structure Download PDFInfo
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- CN103441322A CN103441322A CN2013104072748A CN201310407274A CN103441322A CN 103441322 A CN103441322 A CN 103441322A CN 2013104072748 A CN2013104072748 A CN 2013104072748A CN 201310407274 A CN201310407274 A CN 201310407274A CN 103441322 A CN103441322 A CN 103441322A
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Abstract
The invention discloses an extendable tower-shaped satellite antenna framework structure. The tower-shaped satellite antenna framework structure is an integrated mesh tower-shaped structure, meshes form the upper bottom of the tower-shaped structure and the framework of each side surface, and the mesh wires of the meshes are composed of two kinds of memory alloy wires with different specifications. The extendable tower-shaped satellite antenna framework structure has the following advantages: 1. the use of a memory alloy wire technology can reduce the quality of the complexity of the actuating mechanism extended by a satellite antenna and improve the extension reliability; 2. the antenna extension mechanism provided by the invention can be integrated with other special extension mechanisms for design so that the structure weight can be saved and the efficiency can be enhanced; 3. by adjusting the positions and the shape of the meshes, the first-order inherent frequency of the tower-shaped satellite antenna framework structure can be adjusted; and 4. a tower-shaped satellite antenna framework, made of metal materials, can be used as an antenna. The tower-shaped satellite antenna framework has a big caliber so that the problem of inadequate gain of a conventional antenna can be overcome, the gain of the tower-shaped antenna is enhanced, and the ground communication capability is also improved.
Description
Technical field
The present invention relates to the satellite antenna structure, especially relate to a kind of extensible satellite antenna structure.
Background technology
The version of satellite antenna has a lot, and wire antenna, horn antenna, reflector antenna and array antenna etc. are arranged.From the angle of structure and mechanism, consider, reflector antenna and array antenna stock size are large, structure is more complicated, and have higher dimensional requirement.And large-scale deployable antenna is generally flexible reflector antenna, its bore generally surpasses 4.2m, even reaches 150m.Most of flexible reflecting surface Bian flexible metal nets, and need various forms of development mechanisms that it is launched, therefore also referred to as netted deployable antenna.Since 20 century 70s, various countries have developed polytype netted deployable reflecting surface antenna form in succession, have been summed up: radial rib antenna, winding rib antenna, architecture type expandable antenna, annular truss deployable antenna etc.In addition, also developed at present a kind of Inflatable antenna.Paraballon adopts the flexible thin-film material to make air bag, and during satellite launch, air bag is contracted in very little space, thus satellite after entering the orbit, utilize compressed air for airbag aeration forms needed reflecting surface.
Yet these antenna can not solve that satellite antenna complex structure, quality are large, the problem such as little that gains, and has limited the application of such microsatellite simultaneously.Such as the architecture type expandable antenna structure, owing to forming construction unit formula standard package, can splice needed antenna aperture as required, becomes more readily available the large-scale deployable antenna of heavy caliber.Yet the collection efficiency when architecture type expandable antenna structure can not guarantee that each member closes up, also be difficult to guarantee each bar mutually noninterfere when antenna launches.And, for the heavy caliber architecture type expandable antenna, its architecture quality is larger.
At present, there are following problem in the deployed configuration of satellite antenna, mechanism: 1. development mechanism is complicated, weight is large; 2. the natural frequency scope overlap problem of the natural frequency of large-scale diameter expansible antenna structure and primary system or each subsystem; 3. under the certain mass condition, satellite antenna gain is large not, between the star ground communication that has affected satellite and star, communicates by letter.
Therefore, a kind of well behaved extensible satellite antenna structure plays the vital use of doing to the further developing of application of microsatellite.
Summary of the invention
The technical problem to be solved in the present invention is: build a kind of expandable type turriform satellite antenna memorial alloy skeleton structure, overcome structure, mechanism's challenge of existing satellite antenna, improved the reliability of satellite antenna; Overcome the problem of large-scale diameter expansible antenna rigidity, make the first natural frequency evasive satellite of antenna structure and the first natural frequency of each subsystem; Overcome the problem of existing antenna gain deficiency, strengthened the gain of tower antenna, improve ability to communicate over the ground.
Technical scheme of the present invention is: a kind of expandable type turriform satellite antenna skeleton structure, and described tower antenna skeleton structure is integral type grid pyramidal structure, described grid forms the upper bottom surface of pyramidal structure and the skeleton of each side; The netting twine of described grid forms for the memory alloy wire by two kinds of different sizes;
Described memorial alloy can produce distortion under external force, when external force is removed, under certain temperature conditions, can return to the original form.Satellite antenna is designed to tower-like, carry out tower-like expansion network under hot environment, folding at low temperatures compression again, its volume is significantly dwindled, accept the strong radiation of sunlight in space, make it the tower-like shape of recovering original, drive the adjuncts such as solar sail, solar battery thin film and launch at body structure surface simultaneously.
Further technical scheme of the present invention is: the grid of described grid pyramidal structure upper bottom surface and each side, and each netting twine crosspoint forms node, and the node on every netting twine is uniformly distributed;
Further technical scheme of the present invention is: the node on every netting twine can freely be adjusted as required;
Further technical scheme of the present invention is: described grid pyramidal structure is the axial symmetry truncated rectangular pyramids, four sides of described truncated rectangular pyramids are identical, and be isosceles trapezoid, the upper bottom surface of described truncated rectangular pyramids and bottom surface are square, and the length of side of bottom surface is greater than the length of side of upper bottom surface;
Further technical scheme of the present invention is: can be in shape-memory alloy wire surface dress matel coated coating, to adapt to different satellite antenna needs.
Further technical scheme of the present invention is: described shape memory alloy wire material material is the Ni-Ti alloy;
Further technical scheme of the present invention is: described turriform skeleton antenna upper bottom surface is designed with the mechanical interface be connected with the satellite main body with start.
Beneficial effect of the present invention: the present invention, by a kind of extensible turriform satellite antenna skeleton structure, solves following problem:
1. use the memorial alloy technology, reduce actuator's quality and complexity that satellite antenna launches, improve the reliability of launching;
2. antenna development mechanism of the present invention can merge design with other special development mechanisms, such as the solar sail development mechanism, or solar cell sail development mechanism, thereby can save construction weight, raise the efficiency;
3. by adjusting position and the shape of grid, the first natural frequency of tower satellite antenna skeleton structure be can regulate, the natural frequency evasive satellite of satellite antenna structure or the natural frequency of each subsystem made;
4. described turriform satellite antenna skeleton, because of its metal material, can be used it as antenna.This turriform satellite antenna skeleton bore is large, has overcome the problem of existing antenna gain deficiency, has strengthened the gain of tower antenna, improves ability to communicate over the ground.
A kind of deployable turriform satellite antenna skeleton structure of the present invention, described skeleton structure is the integral type grid pyramidal structure that adopts shape-memory alloy wire to make, and has reduced actuator's quality and complexity that satellite antenna launches, improves the reliability of launching.Described grid pyramidal structure, the described network form of capable of regulating and position, can adjust the natural frequency of described skeleton structure flexibly, makes the natural frequency evasive satellite of satellite antenna structure or the natural frequency of each subsystem, prevent resonance, reduce the interference between each system.Described turriform skeleton structure can merge design with other special development mechanism, the bond areas such as having increased too can battery, solar sail.Described turriform skeleton structure is used as antenna, increases satellite antenna gain, has improved satellite over the ground and ability to communicate between star.
The accompanying drawing explanation
Fig. 1 is a kind of extensible turriform satellite antenna skeleton structure front view that the present invention proposes;
The vertical view that Fig. 2 is Fig. 2;
Fig. 3 is a kind of extensible turriform satellite antenna skeleton structure 3-D view that the present invention proposes;
Fig. 4 is the extensible turriform satellite antenna skeleton structure memorial alloy process chart that the present invention proposes;
Fig. 5 is that the extensible turriform satellite antenna skeleton structure that the present invention proposes is assemblied in the schematic diagram on satellite.
In figure: the 1-bottom surface, the 2-square, the 3-upper bottom surface connects, 4-extension bar, 5-incline.
Concrete embodiment
Below in conjunction with concrete embodiment, technical solution of the present invention is further illustrated.
Consult Fig. 1, the extensible turriform satellite antenna skeleton structure in the present embodiment, specific constructive form is a kind of integral type grid pyramidal structure.Described pyramidal structure is an axial symmetry truncated rectangular pyramids, and four sides of described truncated rectangular pyramids are identical, and are isosceles trapezoid, and the bottom surface 1 of described truncated rectangular pyramids and upper bottom surface 3 are square, and the length of side of bottom surface is greater than the length of side of upper bottom surface.Described truncated rectangular pyramids is square 2 along the axial cross section of symmetry, and this foursquare length of side length has 3 described cross sections between upper bottom surface and bottom surface length of side length in this example.The incline 5 of described truncated rectangular pyramids is by described upper bottom surface, bottom surface and couple together along symmetrical axial cross section.On the side of described truncated rectangular pyramids, described B alloy wire is arranged by upper bottom surface, bottom surface and the connecting rod 4 that couples together along the limit in symmetrical axial cross section, play the effect of bracing piece.Like this, described grid turriform satellite antenna skeleton structure consists of described upper bottom surface, described bottom surface, symmetrical axial cross section, described edge, described incline and the described connecting rod that is positioned at side.
As shown in Figure 1, the specific embodiment of the invention process is: (member 3, described bottom surface 1, symmetrical axial cross section 2, described edge, the Ni-Ti B alloy wire that is 1.6mm by 4 diameters forms the described upper bottom surface of described turriform satellite antenna skeleton structure.The Ni-Ti B alloy wire that described side connecting rod 4 is 1.6mm by diameter forms, and the Ni-Ti B alloy wire that described incline 5 is 2.0mm by diameter forms.Described incline 5 couples together described upper bottom surface 3, described bottom surface 1, symmetrical axial cross section, described edge square 2 with described connecting rod 4.The specification that can change described Ni-Ti B alloy wire and quantity along symmetrical axial cross section, to adapt to the demand of different satellite antenna tasks.
As shown in Figure 1, the specific embodiment of the invention process is: upper bottom surface 3 is designed with the mechanical interface be connected with the satellite main body with start, and a kind of extensible turriform satellite antenna skeleton structure of the present invention is assemblied on the satellite main body.
As shown in Figure 2, the specific embodiment of the invention process is: as Fig. 2 (1), memorial alloy can produce distortion under external force, and satellite antenna is designed to Pyramid, carries out the turriform development mechanism under hot environment; As Fig. 2 (2), folding at low temperatures compression, significantly dwindle its volume; As Fig. 2 (3), the turriform skeleton is accepted the strong radiation of sunlight in space, makes described skeleton recover original tower-like shape.As Fig. 2 (4), described skeleton launches to drive the adjuncts such as solar sail, solar battery thin film and launches at body structure surface simultaneously.
As shown in Figure 3, the specific embodiment of the invention process is: a kind of extensible turriform satellite antenna of the present invention is assemblied on satellite.The object of solar sail, solar cell can be adhered in its described side.
Above content is the further description of the present invention being done in conjunction with concrete preferred implementation, can not assert that specific embodiment of the invention is confined to these explanations.For the common technique personnel of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as protection scope of the present invention.
Claims (7)
1. an expandable type turriform satellite antenna skeleton structure, it is characterized in that: described tower antenna skeleton structure is integral type grid pyramidal structure, described grid forms the upper bottom surface of pyramidal structure and the skeleton of each side; The netting twine of described grid forms for the memory alloy wire by two kinds of different sizes.
2. an expandable type turriform satellite antenna skeleton structure as claimed in claim 1, is characterized in that: the grid of described grid pyramidal structure upper bottom surface and each side, each netting twine crosspoint formation node.
3. an expandable type turriform satellite antenna skeleton structure as claimed in claim 2, it is characterized in that: the node on described every netting twine is uniformly distributed.
4. one kind as claim 1,2 or 3 described expandable type turriform satellite antenna skeleton structures, it is characterized in that: described grid pyramidal structure is the axial symmetry truncated rectangular pyramids, four sides of described truncated rectangular pyramids are identical, and be isosceles trapezoid, the upper bottom surface of described truncated rectangular pyramids and bottom surface are square, and the length of side of bottom surface is greater than the length of side of upper bottom surface.
5. one kind as claim 1,2 or 3 described expandable type turriform satellite antenna skeleton structures, it is characterized in that: described shape-memory alloy wire surface dress matel coated coating.
6. one kind as claim 1,2 or 3 described expandable type turriform satellite antenna skeleton structures, and it is characterized in that: described shape memory alloy wire material material is the Ni-Ti alloy.
7. one kind as claim 1,2 or 3 described expandable type turriform satellite antenna skeleton structures, it is characterized in that: described turriform skeleton antenna upper bottom surface is designed with and is connected with the satellite main body and the mechanical interface of start.
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| CN2013104072748A CN103441322A (en) | 2013-09-09 | 2013-09-09 | Extendable tower-shaped satellite antenna framework structure |
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| CN2013104072748A CN103441322A (en) | 2013-09-09 | 2013-09-09 | Extendable tower-shaped satellite antenna framework structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872422A (en) * | 2014-03-24 | 2014-06-18 | 上海交通大学 | Umbrella-shaped unfoldable antenna system |
| CN105207577A (en) * | 2015-11-09 | 2015-12-30 | 哈尔滨工业大学 | Flexible solar cell array based on shape memory polymer composite material and expansion method of flexible solar cell array |
| CN106953154A (en) * | 2017-02-20 | 2017-07-14 | 西安电子科技大学 | A kind of deployable cone-type spiral array antenna based on cable net structure |
| CN107221755A (en) * | 2017-04-22 | 2017-09-29 | 西安电子科技大学 | It is a kind of from resilience reconfigurable satellite-borne deployable antenna |
| CN108987880A (en) * | 2018-07-25 | 2018-12-11 | 哈尔滨工业大学 | Deployable antenna basic unit, deployable antenna and method for folding based on paper folding |
| CN113161710A (en) * | 2021-03-26 | 2021-07-23 | 上海卫星工程研究所 | Spatial expandable mesh antenna with profile precision capable of being adjusted in orbit |
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| US6202379B1 (en) * | 1994-09-28 | 2001-03-20 | Nippon Telegraph & Telephone Corp. | Modular deployable antenna |
| CN101106216A (en) * | 2007-04-13 | 2008-01-16 | 哈尔滨工业大学 | Extensible solid surface antenna reflective face of shape memory material |
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2013
- 2013-09-09 CN CN2013104072748A patent/CN103441322A/en active Pending
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| US6202379B1 (en) * | 1994-09-28 | 2001-03-20 | Nippon Telegraph & Telephone Corp. | Modular deployable antenna |
| CN101106216A (en) * | 2007-04-13 | 2008-01-16 | 哈尔滨工业大学 | Extensible solid surface antenna reflective face of shape memory material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872422A (en) * | 2014-03-24 | 2014-06-18 | 上海交通大学 | Umbrella-shaped unfoldable antenna system |
| CN103872422B (en) * | 2014-03-24 | 2016-03-09 | 上海交通大学 | Umbrella deployable antenna system |
| CN105207577A (en) * | 2015-11-09 | 2015-12-30 | 哈尔滨工业大学 | Flexible solar cell array based on shape memory polymer composite material and expansion method of flexible solar cell array |
| CN106953154A (en) * | 2017-02-20 | 2017-07-14 | 西安电子科技大学 | A kind of deployable cone-type spiral array antenna based on cable net structure |
| CN106953154B (en) * | 2017-02-20 | 2019-02-22 | 西安电子科技大学 | A kind of deployable cone-type spiral array antenna based on cable net structure |
| CN107221755A (en) * | 2017-04-22 | 2017-09-29 | 西安电子科技大学 | It is a kind of from resilience reconfigurable satellite-borne deployable antenna |
| CN108987880A (en) * | 2018-07-25 | 2018-12-11 | 哈尔滨工业大学 | Deployable antenna basic unit, deployable antenna and method for folding based on paper folding |
| CN108987880B (en) * | 2018-07-25 | 2020-02-07 | 哈尔滨工业大学 | Unfolding antenna basic unit based on folded paper, unfolding antenna and folding method |
| CN113161710A (en) * | 2021-03-26 | 2021-07-23 | 上海卫星工程研究所 | Spatial expandable mesh antenna with profile precision capable of being adjusted in orbit |
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