阅读说明：本技术 板状卫星主框架及板状卫星 (Plate-shaped satellite main frame and plate-shaped satellite ) 是由 薛鹏飞 陈绍杰 施维慰 连红奎 于 2021-07-30 设计创作，主要内容包括：本发明涉及卫星技术领域,尤其是涉及一种板状卫星主框架及板状卫星。所述板状卫星主框架,包括：上框架层和下框架层,所述上框架层内设有上层晶格,所述下框架层内设有下层晶格,所述上框架层的背离所述上层晶格的一侧与所述下框架层的背离所述下层晶格的一侧固定连接。本发明提供的板状卫星主框架能够实现正面和反面安装卫星元件,从而可以减小板状主框架的板面(垂直于板状卫星主框架厚度方向的面)面积,一方面可以提高板状卫星主框架的力学稳定性,且该板状卫星主框架双层结构,能够提高抗弯性能,进一步提高板状卫星主框架的力学稳定性；另一方面可以减小所需整流罩的直径。(The invention relates to the technical field of satellites, in particular to a platy satellite main frame and a platy satellite. The plate-shaped satellite main frame includes: the upper frame layer is internally provided with an upper layer of crystal lattices, the lower frame layer is internally provided with a lower layer of crystal lattices, and one side of the upper frame layer departing from the upper layer of crystal lattices is fixedly connected with one side of the lower frame layer departing from the lower layer of crystal lattices. The plate-shaped satellite main frame provided by the invention can realize the installation of satellite elements on the front side and the back side, so that the area of the plate surface (the surface perpendicular to the thickness direction of the plate-shaped satellite main frame) of the plate-shaped main frame can be reduced, on one hand, the mechanical stability of the plate-shaped satellite main frame can be improved, and the double-layer structure of the plate-shaped satellite main frame can improve the bending resistance and further improve the mechanical stability of the plate-shaped satellite main frame; on the other hand, the diameter of the required fairing can be reduced.)

1. A plate-like satellite main frame, comprising: the upper frame layer is internally provided with an upper layer of crystal lattices, the lower frame layer is internally provided with a lower layer of crystal lattices, and one side of the upper frame layer departing from the upper layer of crystal lattices is fixedly connected with one side of the lower frame layer departing from the lower layer of crystal lattices.

2. The slab satellite main frame according to claim 1, wherein the upper frame layer and the lower frame layer share a floor.

3. The plate-shaped satellite main frame according to claim 1 or 2, wherein the upper frame layer and the lower frame layer are fixedly connected by a connecting member;

or, the upper frame layer and the lower frame layer are integrally formed.

4. The plate-shaped satellite main frame according to claim 1, further comprising a thermal control layer; the thermal control layer is sandwiched between the upper frame layer and the lower frame layer.

5. The plate-shaped satellite main frame according to claim 4, wherein the thermal control layer comprises a base body and a plurality of working medium cavities arranged on the base body, and the working medium cavities are sequentially arranged at intervals along the length direction or the width direction of the plate-shaped satellite main frame; the working medium cavity is filled with working medium, so that a heat pipe structure is formed.

6. The plate-shaped satellite main frame according to claim 5, wherein the base body is further provided with a phase change cavity, and the phase change cavity extends along the length direction of the working medium cavity; and the phase change cavity is used for filling a heat exchange block made of a phase change material.

7. The plate-shaped satellite main frame according to claim 6, wherein a heat conductive plate is provided in the phase change chamber, the heat conductive plate being inserted into the heat exchange block.

8. The plate-shaped satellite main frame according to claim 4, wherein the thermal control layer comprises a base body and a circulation flow channel arranged on the base body, the circulation flow channel is used for circulating heat exchange liquid, and a driving member communicated with the circulation flow channel is arranged in the thermal control layer and used for driving the heat exchange liquid to flow.

9. The plate-shaped satellite main frame according to any one of claims 4 to 8, wherein the upper frame layer, the thermal control layer and the lower frame layer are integrally formed.

10. A plate satellite comprising a satellite element and a plate satellite main frame according to any one of claims 1 to 9, said satellite element being mounted in said upper lattice and said lower lattice.

Technical Field

The invention relates to the technical field of satellites, in particular to a platy satellite main frame and a platy satellite.

Background

The use of satellites has profound effects on the development of the society in aspects of economy, science, information, safety, humanity and the like. Therefore, the satellite launching technology is rapidly developed, and a one-rocket-one-star launching mode is developed to a one-rocket-multiple-star launching mode, and the one-rocket-multiple-star satellite launching mode is an efficient spacecraft launching mode, can fully utilize the carrying capacity of a rocket and reduce launching cost, and has good practical value for multi-star networking. A plurality of satellites are generally stacked and tightly placed in the fairing, and after the fairing reaches a set orbit, the satellites in the fairing are released and scattered and reach respective preset positions.

The satellite has various configurations, and comprises a plate-shaped satellite which comprises a main frame and a sealing plate, wherein the main frame is arranged in a plate shape, a plurality of crystal lattices are arranged in the main frame, the crystal lattices are used for mounting satellite elements, and the sealing plate covers the main frame to seal the crystal lattices; the larger the number of satellite elements, the larger the number of crystal lattices required, and hence the larger the area of the main frame plate required, which results in poor mechanical stability of the main frame of the plate satellite with a constant number of mechanical fixing points and requires a large diameter of the fairing.

Disclosure of Invention

The invention aims to provide a plate-shaped satellite main frame and a plate-shaped satellite, which solve the technical problems that the main frame of the plate-shaped satellite is poor in mechanical stability and the diameter of a fairing is required to be large under the condition that the number of mechanical fixing points is not changed in the prior art to a certain extent.

The invention provides a plate-shaped satellite main frame, which comprises: the upper frame layer is internally provided with an upper layer of crystal lattices, the lower frame layer is internally provided with a lower layer of crystal lattices, and one side of the upper frame layer departing from the upper layer of crystal lattices is fixedly connected with one side of the lower frame layer departing from the lower layer of crystal lattices.

The plate-shaped satellite main frame comprises an upper frame layer and a lower frame layer which are arranged back to back and fixedly connected, wherein a satellite element can be arranged in an upper lattice of the upper frame layer, and a satellite element can also be arranged in a lower lattice of the lower frame layer. On the premise of installing the same number of satellite elements, compared with the traditional plate-shaped satellite main frame, the plate-shaped satellite main frame provided by the invention can realize the installation of the satellite elements on the front side and the back side, so that the area of the plate surface (the surface vertical to the thickness direction of the plate-shaped satellite main frame) of the plate-shaped main frame can be reduced, on one hand, the mechanical stability of the plate-shaped satellite main frame can be improved, and the double-layer structure of the plate-shaped satellite main frame can improve the bending resistance and further improve the mechanical stability of the plate-shaped satellite main frame; on the other hand, the diameter of the required fairing can be reduced.

As an alternative, the upper frame layer and the lower frame layer share a sole plate.

Further, the upper frame layer and the lower frame layer are fixedly connected through a connecting piece;

or, the upper frame layer and the lower frame layer are integrally formed.

As an alternative, the plate-shaped satellite main frame further comprises a thermal control layer; the thermal control layer is sandwiched between the upper frame layer and the lower frame layer.

Furthermore, the thermal control layer comprises a base body and a plurality of working medium cavities arranged on the base body, and the working medium cavities are sequentially arranged at intervals along the length direction or the width direction of the plate-shaped satellite main frame; the working medium cavity is filled with working medium, so that a heat pipe structure is formed.

Furthermore, a phase change cavity is also arranged on the base body and extends along the length direction of the working medium cavity; and the phase change cavity is used for filling a heat exchange block made of a phase change material.

Further, a heat conducting plate is arranged in the phase change cavity and is used for being inserted into the heat exchange block.

Furthermore, the thermal control layer comprises a base body and a circulating flow channel arranged on the base body, the circulating flow channel is used for circulating heat exchange liquid, a driving piece communicated with the circulating flow channel is arranged in the thermal control layer, and the driving piece is used for driving the heat exchange liquid to flow.

Further, the upper frame layer, the thermal control layer and the lower frame layer are integrally formed.

The invention provides a platy satellite, which comprises a satellite element and the platy satellite main frame, wherein the satellite element is arranged in the upper layer crystal lattice and the lower layer crystal lattice.

It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a plate-shaped satellite main frame according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a plate-shaped satellite main frame according to another embodiment of the present invention;

fig. 3 is a sectional view of the plate-shaped satellite main frame shown in fig. 2;

fig. 4 is an enlarged view of the plate-shaped satellite main frame a shown in fig. 3.

Icon: 10-upper frame layer; 20-a lower frame layer; 30-a thermal control layer; 11-upper lattice; 21-lower layer lattice; 31-a substrate; 32-a working medium cavity; 33-a phase change cavity; 34-heat conducting plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

as shown in fig. 1 to 4, the present invention provides a plate-shaped satellite main frame, which includes an upper frame layer 10 and a lower frame layer 20, wherein an upper lattice 11 is disposed in the upper frame layer 10, a lower lattice 21 is disposed in the lower frame layer 20, a side of the upper frame layer 10 away from the upper lattice 11 is fixedly connected to a side of the lower frame layer 20 away from the lower lattice 21, that is, the upper frame layer 10 and the lower frame layer 20 are disposed back to back, and the upper lattice 11 and the lower lattice 21 are disposed back to back, so as to facilitate installation of satellite components in the upper lattice 11 and the lower lattice 21.

The plate-shaped satellite main frame provided by the embodiment comprises an upper frame layer 10 and a lower frame layer 20 which are arranged back to back and fixedly connected, wherein satellite elements can be installed in an upper layer lattice 11 of the upper frame layer 10, and satellite elements can also be installed in a lower layer lattice 21 of the lower frame layer 20. On the premise of installing the same number of satellite elements, compared with the traditional plate-shaped satellite main frame, the plate-shaped satellite main frame provided by the embodiment can realize the installation of the satellite elements on the front side and the back side, so that the area of the plate surface (the surface perpendicular to the thickness direction of the plate-shaped satellite main frame) of the plate-shaped main frame can be reduced, on one hand, the mechanical stability of the plate-shaped satellite main frame can be improved, and the double-layer structure of the plate-shaped satellite main frame can improve the bending resistance and further improve the mechanical stability of the plate-shaped satellite main frame; on the other hand, the diameter of the required fairing can be reduced.

The shape of the plate surface of the upper frame layer 10 may be triangular, quadrilateral, pentagonal, elliptical or circular; also, the plate surface shape of the lower frame layer 20 may be triangular, quadrangular, pentagonal, elliptical, circular, or the like.

The shape and size of the upper frame layer 10 and the shape and size of the lower frame layer 20 may be different; preferably, the shape and size of the upper frame layer 10 and the shape and size of the lower frame layer 20 may be different, which facilitates installation.

The number of upper layer lattices 11 and the number of lower layer lattices 21 may be set as required, and may be the same or different.

Specifically, the upper frame layer 10 and the lower frame layer 20 may be provided in a box-shaped body with one side opened, and partitions staggered with each other are provided on the upper frame layer 10, thereby forming a plurality of upper lattices 11; similarly, spacers may be disposed in the lower frame layer 20 to be staggered with respect to each other, thereby forming a plurality of lower layer lattices 21.

Example two:

the present embodiment includes any of the technical solutions of the first embodiment. The upper frame layer and the lower frame layer in this embodiment are directly connected.

As shown in fig. 1, further, the upper frame layer 10 and the lower frame layer 20 may be disposed independently from each other, and the two layers may be connected by a connector, wherein the connector may be a fastener such as a bolt or a screw, specifically, threaded holes may be disposed on both the upper frame layer 10 and the lower frame layer 20, and the bolt or the screw is inserted into the two threaded holes, so as to fixedly connect the upper frame layer 10 and the lower frame layer 20; the connecting element can also be adhesive, i.e. the upper frame layer 10 and the lower frame layer 20 are bonded together by the adhesive; alternatively, the connecting member is a welding layer, that is, the upper frame layer 10 and the lower frame layer 20 may be connected and fixed by welding.

On the basis of any of the above embodiments, further, the upper frame layer 10 and the lower frame layer 20 may be disposed independently from each other, each being an independent body, the upper frame layer 10 includes an upper bottom plate and an upper side plate surrounding the upper bottom plate, and the lower frame layer 20 includes a lower bottom plate and a lower side plate surrounding the lower bottom plate.

As an alternative, the upper frame layer 10 and the lower frame layer 20 share a bottom plate, that is, the upper layer lattice 11 and the lower layer lattice 21 are respectively disposed on two sides of the same bottom plate, so that the thickness of the main frame of the plate-shaped satellite can be prevented from being excessively increased, and the height of the plate-shaped satellite can be prevented from being excessively high when the plate-shaped satellites are stacked in the fairing.

As an alternative, the upper frame layer 10 and the lower frame layer 20 are integrally formed by casting, stamping or 3D printing, so that the connection is stable, the strength is good, the connection by using a connecting piece can be avoided, the connection structure on the main frame of the plate-shaped satellite is reduced, and the weight reduction of the plate-shaped satellite is facilitated.

Example three:

the embodiment includes any technical solution of the first embodiment.

As shown in fig. 2 to 4, further, the plate-shaped satellite main frame further includes a thermal control layer 30; the thermal control layer 30 is sandwiched between the upper frame layer 10 and the lower frame layer 20, and the thermal control layer 30 is used for exchanging heat with the upper frame layer 10 and the lower frame layer 20, respectively. The upper frame layer and the lower frame layer are indirectly connected.

In this embodiment, the satellite elements generate heat during operation, and the heat generation amounts of the plurality of satellite elements may be different, which may cause uneven temperature in the plate-shaped satellite main frame, and by heat conduction between the thermal control layer 30 and the lower bottom plate of the upper frame layer 10, the high temperature portion of the upper bottom plate of the upper frame layer 10 may be reduced, and the low temperature portion of the upper bottom plate of the upper frame layer 10 may be increased, thereby achieving temperature adjustment in the upper frame layer 10, and making the temperature in the upper frame layer 10 uniform; similarly, the heat conduction between the thermal control layer 30 and the bottom plate of the lower frame layer 20 can reduce the high temperature portion of the lower bottom plate of the lower frame layer 20 and improve the low temperature portion of the lower bottom plate of the lower frame layer 20, thereby achieving the temperature adjustment in the lower frame layer 20 and making the temperature in the lower frame layer 20 uniform. The plate-shaped satellite main frame provided by the embodiment integrates the thermal control layer 30, can exchange heat for the upper frame layer 10 and the lower frame layer 20 at the same time, and has a compact structure and a small occupied space.

The structural form of the thermal control layer 30 may be various, for example: the thermal control layer 30 comprises a plurality of working medium cavities 32, and the working medium cavities 32 are sequentially arranged at intervals along the length direction or the width direction of the plate-shaped satellite main frame; the working medium cavity 32 is filled with working medium, so that a heat pipe structure is formed, namely a plurality of heat pipe structures are sequentially arranged at intervals along the length direction or the width direction of the plate-shaped satellite frame, the working medium cavity 32 can be filled with working medium such as ammonia or propylene, and a diversion trench structure or a capillary pore structure can be arranged in the working medium cavity 32, so that the circulation of the working medium is realized. It should be noted that, after the working medium is filled in the working medium cavity 32, the sealing can be performed by a conventional means in the art.

Optionally, the plurality of working medium cavities 32 are uniformly arranged, so that heat exchange is uniform.

For another example: on the basis of arranging the working medium cavity 32 on the base body 31, the base body 31 is also provided with a phase change cavity 33, and the phase change cavity 33 extends along the length direction of the working medium cavity 32; the phase-change cavity 33 is filled with a heat exchange block using a phase-change material (e.g., paraffin, carboxylic acid or ester, etc.), thereby forming a phase-change heat pipe structure.

The number of the phase change cavities 33 may be multiple, and optionally, the multiple phase change cavities 33 are uniformly arranged. A plurality of phase change chambers 33 and a plurality of working medium chambers 32 may be alternately arranged one by one.

On the basis of the above embodiment, further, the heat conducting plate 34 is arranged in the phase change cavity 33, and the heat conducting plate 34 is used for being inserted into the heat exchange block. The cross section of the phase change cavity 33 can be rectangular, so that the structure is simple and the processing is convenient; a heat conducting plate 34 can be arranged on one side wall of the phase change cavity 33, or heat conducting plates 34 can be arranged on a plurality of side walls, and the number of the heat conducting plates 34 can be set according to the requirement; optionally, in the thickness direction of phase change chamber 33, all be equipped with a plurality of heat-conducting plates 34 on the two relative lateral walls of phase change chamber 33, heat-conducting plate 34 on the upper wall and heat-conducting plate 34 on the lower wall can crisscross the setting each other, and optionally, heat-conducting plate 34 of upper wall and heat-conducting plate 34 of lower wall are just to setting up one by one, are favorable to the temperature homogenization of heat transfer piece.

For another example: the thermal control layer 30 comprises a substrate 31 and a circulation flow channel arranged on the substrate 31, wherein the circulation flow channel is used for circulating heat-exchange liquid, and the plate-shaped satellite main frame further comprises a driving member (such as a mechanical pump or a capillary pump and the like) and other elements (such as a filter, a compensator and the like) which are communicated with the circulation flow channel, and the driving member is used for driving the heat-exchange liquid to flow, so that a thermal structure of a thermal control fluid loop is realized.

It should be noted that only the working medium cavity 32 may be disposed on the substrate 31 of the thermal control layer 30, that is, the thermal control layer 30 only forms a heat pipe structure; the substrate 31 of the thermal control layer 30 can be only provided with the working medium cavity 32 and the phase change cavity 33, that is, the thermal control layer 30 only forms a phase change heat pipe structure; only a circulation flow channel can be arranged on the base body 31 of the thermal control layer 30, namely, the thermal control layer 30 only forms a thermal structure of a thermal control fluid loop; the substrate 31 of the thermal control layer 30 can be provided with both the working medium cavity 32 and the circulating flow channel, that is, the thermal control layer 30 comprises a heat pipe structure and a fluid reflux heat exchange structure; the substrate 31 of the thermal control layer 30 may be simultaneously provided with a working medium cavity 32, a phase change cavity 33 and a circulation flow channel, that is, the thermal control layer 30 includes a phase change heat pipe structure and a fluid backflow heat exchange structure.

Of course, the thermal control layer 30 may also include a heat patch by which low temperatures are compensated.

Further, in addition to any of the above embodiments, the upper frame layer 10, the thermal control layer 30 and the lower frame layer 20 may be disposed independently from each other and then connected by a fastener such as a bolt or a screw, or bonded by an adhesive, or connected by welding.

Optionally, the upper frame layer 10, the thermal control layer 30, and the lower frame layer 20 are integrally formed by casting or 3D printing, so that on one hand, weight increase caused by the arrangement of other connecting structures is avoided, and on the other hand, thermal contact resistance between the thermal control layer 30 and the upper frame layer 10 and the lower frame layer 20 can be avoided, thereby improving the heat conduction effect between the thermal control layer 30 and the upper frame layer 10 and between the thermal control layer and the lower frame layer 20.

The embodiment of the invention also provides a platy satellite, which comprises the platy satellite main frame in any technical scheme, so that the platy satellite main frame has all the beneficial technical effects of the platy satellite main frame, and the description is omitted. The plate satellite further includes satellite elements mounted in the upper lattice 11 and the lower lattice 21. The plate satellite further comprises an upper closing plate connected to the upper frame layer 10 to seal the upper cells 11 and a lower closing plate connected to the lower frame layer 20 to seal the lower cells 21.

A plurality of plate-like satellites are stacked and placed in a fairing prior to launch.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.