CN115832669A - Winding rib type electrostatic forming film reflecting surface antenna - Google Patents
Winding rib type electrostatic forming film reflecting surface antenna Download PDFInfo
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- CN115832669A CN115832669A CN202211513585.8A CN202211513585A CN115832669A CN 115832669 A CN115832669 A CN 115832669A CN 202211513585 A CN202211513585 A CN 202211513585A CN 115832669 A CN115832669 A CN 115832669A
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Abstract
The invention discloses a winding rib type electrostatic forming film reflecting surface antenna device, which comprises a central wheel cylinder, wherein the central wheel cylinder is a prism, the side surface of the central wheel cylinder is fixedly connected with a plurality of elastic winding ribs, a flexible cable is arranged between every two adjacent elastic winding ribs, a basic cable mesh electrode is laid above the flexible cable and the elastic winding ribs, the basic cable mesh electrode consists of triangular meshes, a film reflecting surface is arranged above the basic cable mesh electrode, the film reflecting surface is in a paraboloid shape, the basic cable mesh electrode and the film reflecting surface are connected with an electrostatic power supply through a cable, and the film reflecting surface is connected with the central wheel cylinder.
Description
Technical Field
The invention belongs to the technical field of satellite antennas, and particularly relates to a winding rib type electrostatic forming film reflecting surface antenna in the field of satellite antennas.
Background
With the continuous development of aerospace science and technology, the requirements for the performance of the satellite-borne antenna are continuously improved, and if the antenna is required to be light in weight so as to be convenient for transportation, the reflecting surface has high precision so as to have high observation precision and strong signal transceiving capacity. At present, the well developed satellite-borne deployable reflector antenna, such as the mesh deployable reflector antenna like radial rib, framework, peripheral truss, etc., is difficult to satisfy the requirements of high storage rate and high precision. For this reason, many new concept antennas typified by an electrostatically formed thin film reflecting surface antenna have appeared. The electrostatic forming film reflecting surface antenna is an active reflecting surface which forms an electrostatic field between a high-voltage electrode and a grounding metal-plated film and controls the shape of a film reflecting surface by the electrostatic force, and has outstanding advantages in the aspects of surface density, development performance, surface maintenance in an orbital thermal environment and the like, so the electrostatic forming film reflecting surface antenna is highly concerned and widely researched by a plurality of international space navigation research institutions.
However, since the antenna cannot be transported in a large-sized space due to the limitation of the accommodation space of the vehicle, a deployable antenna having a high storage ratio is obtained. Such as a radial rib unfolding antenna, a winding rib unfolding antenna, a ring column unfolding antenna, a peripheral truss unfolding antenna and the like, the deployable antennas are high in storage rate, high in unfolding reliability and light in weight, the accuracy of the surface of a reflecting surface can be regulated and controlled by adjusting the length of a stay cable, the deployable antennas are the most actively researched space antennas at present, but the number of the stay cables is multiplied along with the increase of the aperture of the antenna, and great challenges are brought to the adjustment of the surface accuracy.
Therefore, in the research process of the satellite-borne deployable antenna, the winding rib type electrostatic forming film reflecting surface antenna with high storage ratio and stable structure is provided, and has important practical significance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a winding rib type electrostatic forming film reflecting surface antenna, which solves the problems of large accommodating volume and design of a supporting structure of the conventional electrostatic forming film antenna.
The technical scheme includes that the winding rib type electrostatic forming film reflecting surface antenna comprises a central wheel cylinder, the central wheel cylinder is a prism, the side face of the central wheel cylinder is fixedly connected with a plurality of elastic winding ribs, a flexible cable is arranged between every two adjacent elastic winding ribs, a basic cable mesh electrode is laid above the flexible cable and the elastic winding ribs, the basic cable mesh electrode is composed of triangular meshes, a film reflecting surface is arranged above the basic cable mesh electrode, the film reflecting surface is in a paraboloid shape, the basic cable mesh electrode and the film reflecting surface are connected with an electrostatic power supply through a cable, and the film reflecting surface is connected with the central wheel cylinder.
The invention is also characterized in that: the upper surface of the central wheel cylinder is paraboloidal and is consistent with the film reflecting surface (5) Jiao Jingbi.
The number of the side surfaces of the central wheel cylinder is consistent with the number of the elastic winding ribs, and the roots of the elastic winding ribs are fixed on the side surfaces of the central wheel cylinder through screws.
The cross section of the elastic winding rib is straight or has a certain radian so as to increase the bending rigidity, a strip-shaped thin plate with smaller thickness can be selected, the strip-shaped thin plate of the elastic winding rib is in a parabolic shape longitudinally, and a plurality of small holes are formed in the edge of the elastic winding rib and are connected with the flexible cable and the basic cable net electrode through the small holes of the elastic winding rib.
The material of the elastic winding rib can be stainless steel, carbon fiber and beryllium bronze.
The flexible cable comprises a back cable, the back cable is fixed in small holes in the bottom edges of the two adjacent elastic winding ribs, the back cable is connected with a vertical cable, the back cable is connected with a basic cable net electrode through the vertical cable, small holes in the top edges of the two adjacent elastic winding ribs are connected with electrode cables, and the basic cable net electrode is connected with the elastic winding ribs through the electrode cables.
The basic cable net electrode comprises inhaul cables and film electrodes, the inhaul cables are woven into triangular meshes, the film electrodes are triangles corresponding to the triangular meshes woven by the inhaul cables, the film electrodes are connected with the triangular meshes woven by the inhaul cables in a matched mode to form the basic cable net electrode, and the basic cable net electrode is connected with the elastic winding ribs.
The film reflecting surface comprises a film and a film skirt stay rope, the film skirt stay rope is arranged on the periphery of the film reflecting surface and the inner ring of the film reflecting surface, the periphery of the film reflecting surface is connected with the tail end supporting column of the elastic winding rib through the film skirt stay rope, the film skirt stay rope is fixed through a preformed hole of the tail end supporting column of the elastic winding rib, and the inner ring of the film reflecting surface is connected with the upper surface of the central wheel cylinder through the film skirt stay rope.
The film material can be selected from aluminum plated polyimide film, mylar film and Kapton film.
The material of the film skirt edge inhaul cable can be selected from aramid fiber ropes, carbon fiber ropes and polyimide fiber ropes.
The invention has the beneficial effects that:
1. the invention adopts the elastic winding rib type expandable structure as the supporting structure of the whole antenna system, the winding rib type structure can be folded and expanded, only less space is occupied when the winding rib type structure is folded, the folded volume is obviously reduced, and the emission cost is reduced;
2. the invention adopts the elastic winding rib type deployable structure to support the film reflecting surface and the basic cable mesh electrode, and the basic cable mesh electrode can be arranged at the reserved holes on the edges of two adjacent elastic winding ribs, thereby having the advantage of simple structure and reducing the design complexity of an antenna system.
Drawings
FIG. 1 is a schematic diagram of a workpiece structure of a rib-wound electrostatically formed thin film reflector antenna in accordance with the present invention;
FIG. 2 is a schematic view of a rib-wound configuration of a rib-wound electrostatically formed thin film reflector antenna in accordance with the present invention;
FIG. 3 is a schematic diagram of a flex configuration for a rib-wrapped electrostatically formed thin film reflector antenna in accordance with the present invention;
FIG. 4 is a schematic diagram of the basic wire mesh electrode of the rib-wrapped electrostatically formed thin film reflector antenna of the present invention;
FIG. 5 is a schematic diagram of a film reflector for a rib-wrapped electrostatically formed film reflector antenna in accordance with the present invention;
fig. 6 is a schematic drawing showing the folded antenna structure of the rib-wound electroformed thin-film reflector antenna of the present invention.
In the drawings, 1, a central wheel cylinder; 2. an elastic winding rib; 3. a flexible cable; 4. a base cable mesh electrode; 5. a thin film reflective surface; 6. an electrostatic power source;
31. the back cable, 32, the vertical cable, 33, the electrode cable, 41, the cable, 42, the film electrode, 51, the film, 52, the film skirt cable.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 and 2, the present invention comprises a central wheel cylinder 1, elastic winding ribs 2, a flexible cable 3, a basic cable net electrode 4, a film reflection surface 5 and an electrostatic power supply 6, wherein the elastic winding ribs 2 are arranged around the outer side of the central wheel cylinder 1; the flexible cables 3 are arranged between two adjacent elastic winding ribs in a staggered mode; the basic cable net electrode 4 is laid above the flexible cable 3; the thin film reflecting surface 5 is arranged above the basic cable net electrode 4; the electrostatic power supply 6 provides high potential for the basic cable net electrode 4 through a cable and provides grounding potential for the film reflecting surface 5, so that the film reflecting surface 5 forms a paraboloid shape.
As shown in fig. 2, the central wheel cylinder 1 is in an 8-prism structure, the upper surface of the central wheel cylinder is a paraboloid, and the focal ratio of the central wheel cylinder is consistent with that of the film reflecting surface 5; each side is provided with 4 threaded holes, the root of the elastic winding rib 2 is fixed on the side of the central wheel cylinder 1 through a screw, and when the elastic winding rib 2 is unfolded, a supporting framework of the antenna is formed.
As shown in fig. 2, 3 and 4, the cross section of the elastic winding rib 2 is straight or has a certain radian to increase the bending rigidity, a strip-shaped thin plate with a smaller thickness can be selected, in addition, the longitudinal direction of the elastic winding rib 2 is in a parabola shape, and the specific parabola equation is related to the focal ratio of the reflecting surface. The edge of the elastic winding rib 2 is provided with a plurality of small holes, which is convenient for being connected with the flexible cable 3 and the basic cable net electrode 4. Further, stainless steel, carbon fiber, and other materials having high strength, high elasticity, and high and low temperature resistance may be used as the material of the elastic winding rib 2.
As shown in fig. 3, the flexible cable 3 includes a back cable 31, a vertical cable 32, and an electrode cable 33, the back cable 31 is fixed in a preformed hole at the lower edge of two adjacent elastic winding ribs 2, the back cable 31 is connected with the basic cable mesh electrode 4 through the vertical cable 32, the basic cable mesh electrode 4 is connected with the elastic winding ribs 2 through the electrode cable 33, and the electrode cable 33 is fixed in a preformed hole at the upper edge of two adjacent elastic winding ribs 2.
As shown in fig. 4, the basic cable mesh electrode 4 includes cables 41 and film electrodes 42, wherein the cables 41 are woven into a triangular mesh form, the film electrodes 42 are lofted into a corresponding triangular mesh form, and are cut and bonded to a plurality of triangles surrounded by the cables to form the basic cable mesh electrode 4.
As shown in fig. 5, the film reflection surface 5 includes a film 51 and a film skirt stay 52, the film reflection surface 5 is made of a film material, the film material is an aluminum-plated polyimide film, a Mylar film, a Kapton film, or the like, the film skirt stay 52 is disposed around the film reflection surface 5 and on an inner ring, the periphery of the film reflection surface 5 is connected with the end support pillar of the elastic winding rib 2 through the film skirt stay 52, and the film skirt stay 52 is specifically fixed through a preformed hole of the end support pillar of the elastic winding rib 2. The inner ring of the film reflecting surface 5 is connected with the upper surface of the central wheel cylinder 1 through a film skirt inhaul cable 52.
As shown in fig. 6, the antenna structure of the present invention is shown in a schematic drawing, in an initial state, the elastic winding rib 2 is wound on the central wheel cylinder 1 and is bound and fixed by a rope, after being launched into a rail, the rope is automatically broken, and the elastic winding rib 2 is unfolded to form a supporting framework of the film reflecting surface 5.
The parts of the present embodiment not described in detail are common means known in the art, and are not described here. The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (10)
1. Electrostatic forming film plane of reflection antenna based on winding rib formula deployable structure, including a central wheel section of thick bamboo (1), a central wheel section of thick bamboo (1) is the prism, a plurality of elastic winding rib (2) of side fixedly connected with of a central wheel section of thick bamboo (1), adjacent two arranged between elastic winding rib (2) flexible cable (3), basic cable net electrode (4) have been laid with the top of elastic winding rib (2) to flexible cable (3), basic cable net electrode (4) comprise the triangle-shaped net, film plane of reflection (5) have been arranged to basic cable net electrode (4) top, film plane of reflection (5) are parabolic shape, basic cable net electrode (4) have electrostatic power source (6) through cable junction with film plane of reflection (5), film plane of reflection (5) are connected with a central wheel section of thick bamboo (1).
2. An electrostatically formed thin film reflective surface antenna based on a wound rib deployable structure as claimed in claim 1, wherein: the upper surface of the central wheel cylinder (1) is a paraboloid and is consistent with the film reflecting surface (5) Jiao Jingbi.
3. An electrostatically formed thin film reflective surface antenna based on a wound rib deployable structure as claimed in claim 2, wherein: the number of the side surfaces of the central wheel cylinder (1) is consistent with that of the elastic winding ribs (2), and the roots of the elastic winding ribs (2) are fixed on the side surfaces of the central wheel cylinder (1) through screws.
4. An electrostatically formed thin film reflective surface antenna based on a wound rib deployable structure as claimed in claim 3, wherein: the cross section of the elastic winding rib (2) is straight or has a certain radian so as to increase the bending rigidity, a strip-shaped thin plate with smaller thickness can be selected, the strip-shaped thin plate of the elastic winding rib (2) is longitudinally parabolic, a plurality of small holes are formed in the edge of the elastic winding rib (2), and the small holes through the elastic winding rib (2) are connected with the flexible cable (3) and the basic cable net electrode (4).
5. An electrostatically formed thin film reflective surface antenna based on a wound rib deployable structure as claimed in claim 4, wherein: the material of the elastic winding rib (2) can be stainless steel, carbon fiber and beryllium bronze.
6. An electrostatically formed thin film reflective surface antenna based on a wound rib deployable structure as claimed in claim 4, wherein: flexible cable (3) are including back to cable (31), back to cable (31) are fixed at two adjacent elastic winding ribs (2) bottom edge aperture, back to cable (31) are connected with vertical cable (32), back to cable (31) are connected with basic cable net electrode (4) through vertical cable (32), the top edge aperture of two adjacent elastic winding ribs (2) is connected with electrode cable (33), basic cable net electrode (4) are connected with elastic winding rib (2) through electrode cable (33).
7. An electrostatically formed thin film reflective surface antenna based on a wound rib deployable structure as claimed in claim 1, wherein: basis cable net electrode (4) include cable (41) and film electrode (42), cable (41) are woven for the triangle-shaped net, film electrode (42) are the triangle-shaped net corresponding who weaves with cable (41), film electrode (42) and the triangle-shaped net accordant connection that cable (41) were woven, form basis cable net electrode (4), basis cable net electrode (4) are connected with elastic winding rib (2).
8. An electrostatically formed thin film reflective surface antenna based on a wound rib deployable structure as claimed in claim 1, wherein: film plane of reflection (5) includes film (51) and film shirt rim cable (52), film plane of reflection (5) periphery and inner circle are provided with film shirt rim cable (52), film plane of reflection (5) periphery is connected with elasticity winding rib (2) terminal support column through film shirt rim cable (52), it is fixed that film shirt rim cable (52) pass through elasticity winding rib (2) terminal support column preformed hole, film plane of reflection (5) inner circle passes through film shirt rim cable (52) and central wheel section of thick bamboo (1) upper surface connection.
9. An electrostatically formed thin film reflective surface antenna based on a wound rib deployable structure as claimed in claim 8, wherein: the material of the film (51) can be selected from an aluminized polyimide film, a Mylar film and a Kapton film.
10. An electrostatically formed thin film reflective surface antenna based on a wound rib deployable structure as claimed in claim 8, wherein: the material of the thin film skirt inhaul cable (52) can be aramid fiber rope, carbon fiber rope and polyimide fiber rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211513585.8A CN115832669A (en) | 2022-11-29 | 2022-11-29 | Winding rib type electrostatic forming film reflecting surface antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211513585.8A CN115832669A (en) | 2022-11-29 | 2022-11-29 | Winding rib type electrostatic forming film reflecting surface antenna |
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| Publication Number | Publication Date |
|---|---|
| CN115832669A true CN115832669A (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211513585.8A Pending CN115832669A (en) | 2022-11-29 | 2022-11-29 | Winding rib type electrostatic forming film reflecting surface antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505224A (en) * | 2023-06-29 | 2023-07-28 | 齐鲁空天信息研究院 | Expandable winding rib, antenna and aerospace device |
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2022
- 2022-11-29 CN CN202211513585.8A patent/CN115832669A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505224A (en) * | 2023-06-29 | 2023-07-28 | 齐鲁空天信息研究院 | Expandable winding rib, antenna and aerospace device |
| CN116505224B (en) * | 2023-06-29 | 2023-09-05 | 齐鲁空天信息研究院 | Antenna and aerospace device composed of expandable winding ribs |
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