CN116039969A - Standard modularized resistance sail device for off-orbit of cube star - Google Patents
Standard modularized resistance sail device for off-orbit of cube star Download PDFInfo
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- CN116039969A CN116039969A CN202310048365.0A CN202310048365A CN116039969A CN 116039969 A CN116039969 A CN 116039969A CN 202310048365 A CN202310048365 A CN 202310048365A CN 116039969 A CN116039969 A CN 116039969A
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Abstract
The invention provides a standard modularized resistance sail device for cube star off-orbit, which comprises four groups of standard unfolding units, a standard unfolding unit bottom plate, a driving system, a sail box, a resistance sail shell and an unlocking device, wherein the standard unfolding units are arranged on the bottom plate; the standard unfolding unit comprises an unfolding unit rotating shaft, a supporting rod for supporting the resistance sail, an unfolding unit rotating shaft protecting shell and an unfolding unit shell. Compared with the existing resistance sail design with a single layout form, the resistance sail design with different layout forms can be conveniently realized by adopting the standardized and modularized standard unfolding units and utilizing different installation modes of the standard unfolding units, such as the resistance sail design with a planar radial unfolding mode, the resistance sail design with pneumatic self-stabilization characteristics and the resistance sail design with a planar tangential unfolding mode, and different unfolding structures are not required to be designed for different resistance sailcloth offices so as to better meet different task requirements, simplify the scheme design process, shorten the design period of the cube star and promote the development of related supporting facilities of the cube star towards a more modularized direction.
Description
Technical Field
The invention relates to the technical field of aerospace, in particular to the technical field of cube star derailment, and specifically relates to a standard modularized space deployable resistance sail device for cube star derailment.
Background
The cube star has the advantages of smaller quality, simpler structure, low cost, short research and development period, high functional density and the like, can be further networked, forms a virtual large satellite by using a distributed constellation, and is mainly used for communication, remote sensing to the ground, scientific research and the like. With the update and development of modern technology, the use of the cube star is more frequent. But the cube star can carry less fuel and has shorter working time. If the space vehicle cannot be cleaned in time after the service life is reached, precious space orbit resources are occupied, and normal operation of other on-orbit spacecrafts is threatened.
In 2007, the inter-agency space debris coordination committee (IADC) published a "space debris mitigation guideline" suggesting that a spacecraft should leave an orbit within 25 years after completion of a mission or within 30 years after being in orbit. Meanwhile, the national defense department bureau also brings out files such as space debris mitigation and protection management methods, and the like, and requires that the low-orbit satellite has active off-orbit capability. The resistance sail technology is a rail lowering method which is most suitable for cube star rail lowering at present. Therefore, the design of the space-deployable resistance sail suitable for the quick off-orbit of the cube star has profound practical significance, and has important effects on maintaining space environment, better utilizing space for human beings and protecting space resources. For example, "Sinomenium acutum Star" developed independently by Tian Jiu (Tian Jiu) SPACTY A successful transmission of the sixth space mission from the institute of space].[2019-05-01]Https:// mp.weixin.qq.com/s/vocmkcY-LZb _s28AT9 JkPw) carrying drag sail device with deployment area of 0.7m 2 The satellites can be made off-orbit within 6-12 months. The star of sinomenine is launched into orbit in month 1 of 2019.
The current common drag sail designs are directed to a particular deployment layout, examples of which are as follows:
the Chinese patent application number is: 201620485944.7 the utility model discloses a resistance sail design, the expansion mode of this resistance sail design is the radial overall arrangement that expands of plane, this resistance sail office's advantage lies in overall structure simple, and the tangential direction of stretching out of bracing piece fits single central pivot structure very, can reduce the problem of belt tape measure spring back bending as far as possible, but its limitation is also comparatively obvious, firstly, this resistance sail design is expanded the back and is located the coplanar and do not possess pneumatic self-stabilization characteristic, the attitude control system requirement on the satellite is higher, secondly belt tape measure spring expansion process is rapid and uncontrolled, the phenomenon of inflation card death easily appears, finally, from the angle of sail, tangential expansion mode can cause the atress of sail both sides uneven, produce the asymmetric condition of internal force, easily make unilateral sail membrane appear in advance and damage. Therefore, the resistance sail cannot be adapted to some cube stars with low cost and imperfect attitude control systems.
The Chinese patent application number is: 202010293058.5 a resistance sail design is disclosed, which is a resistance sail with a pneumatic self-stabilizing layout, compared with the resistance sail design described in the previous paragraph, the resistance sail has no problem of asymmetric stress of the sail membrane, and the existence of the pneumatic self-stabilizing design reduces the requirement on the cube star, but compared with the former, the resistance sail has the problems of smaller sail membrane area under the same condition, insufficient space utilization of the bottom plate and more complex transmission mechanism, and meanwhile, when the cube star attitude control system is perfect, the pneumatic self-stabilizing design has no necessity of the design, and also becomes a limiting factor of the membrane area of the resistance sail.
In summary, we can see different cube stars, which are suitable for different unfolding layouts, but the current resistance sail design does not realize standard modularization in unfolding mode, the resistance sail structures suitable for different unfolding layouts are different, after determining the unfolding layout, the designer has to design different resistance sail structures for different cube star schemes, so that the design process is prolonged intangibly, and the design period is increased.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the standard modularized resistance sail device for the cube star off-orbit, which can be assembled into different unfolding layouts by using the standard unfolding units, and realize the conversion between the plane radial unfolding layout and the pneumatic self-stabilizing layout so as to be convenient for adapting to the off-orbit requirements of various cube stars, improve the modularization and standardization degree of the resistance sail design, greatly improve the application range of the resistance sail device and save the time for designing different resistance sail structures aiming at different cube star schemes.
The technical scheme of the invention is as follows:
the standard modularized resistance sail device for the cube star off-orbit comprises four groups of standard unfolding units, a standard unfolding unit bottom plate, a driving system, a sail box, a resistance sail shell and an unlocking device;
the standard unfolding unit comprises an unfolding unit rotating shaft, a supporting rod for supporting the resistance sail, an unfolding unit rotating shaft protecting shell and an unfolding unit shell;
the two ends of the unfolding unit rotating shaft are arranged on the unfolding unit shell through bearings; the two ends of the unfolding unit rotating shaft protecting shell are fixedly arranged on the unfolding unit shell, the unfolding unit rotating shaft protecting shell is provided with a supporting rod groove for the supporting rod to extend out, and the length direction of the supporting rod groove is axially parallel to the unfolding unit rotating shaft; the support rod is wound on the unfolding unit rotating shaft, and when the unfolding unit rotating shaft rotates, the support rod can extend out of the support rod groove;
the outer shell of the unfolding unit is provided with two groups of connecting structures which are used for fixing the standard unfolding unit between the base plate of the standard unfolding unit and the base plate of the sail box, so that the standard unfolding unit can be utilized to realize planar radial unfolding layout and pneumatic self-stabilizing layout;
when the plane radial expansion layout is adopted, four groups of standard expansion units are respectively arranged at four corners of the standard expansion unit bottom plate, and the expansion unit rotating shafts of each group of standard expansion units are perpendicular to the plane of the standard expansion unit bottom plate; the central line of each supporting rod groove of the two groups of diagonally arranged standard unfolding units is coplanar with one diagonal line of the bottom plate of the standard unfolding unit, and the supporting rod groove faces to the outside;
when the pneumatic self-stabilization layout is adopted, four groups of standard unfolding units are respectively arranged at the middle positions of four sides of the base plate of the standard unfolding unit, and the rotating shafts of the unfolding units of each group of standard unfolding units are parallel to the corresponding edges of the base plate of the standard unfolding unit; in each group of standard unfolding units, the included angle between the plane formed by the central line of the supporting rod groove and the central axis of the rotating shaft of the unfolding unit and the plane of the bottom plate of the standard unfolding unit is the same, and the supporting rod groove faces to one side of the outside close to the sail box;
the driving mechanism can drive the unfolding unit rotating shafts of the four groups of standard unfolding units to synchronously rotate, so that the supporting rods of the four groups of standard unfolding units synchronously extend out of the corresponding supporting rod grooves;
the sail box is provided with a sail box bottom plate and a sail box clapboard; the sail box partition plates are distributed in a cross manner and are fixed on the upper side of the sail box bottom plate, when the planar radial unfolding layout is adopted, the sail box partition plates are correspondingly overlapped with two diagonal lines of the standard unfolding unit bottom plate, and when the pneumatic self-stabilizing layout is adopted, the sail box partition plates are correspondingly vertical to four edges of the standard unfolding unit bottom plate;
the resistance sail shell is coated on the outer sides of the base plate of the standard unfolding unit, the driving system and the sail box and can be opened under the action of the unlocking device to expose the sail box and the standard unfolding unit.
Furthermore, the unfolding unit shell adopts a concave open structure consisting of a left side shell of the unfolding unit, a rear side shell of the unfolding unit and a right side shell of the unfolding unit;
the middle part of the shell at the left side of the unfolding unit is provided with a bearing hole for installing a bearing and is matched with one end of the rotating shaft of the unfolding unit;
a plurality of groups of jacks are also arranged on the wall surface of the shell at the left side of the unfolding unit, and the centers of all jacks are positioned on the same circular arc taking the center of the bearing hole as the center of a circle; the jack is used for being matched with a bolt on one side end face of the unfolding unit rotating shaft protective housing to connect the unfolding unit rotating shaft protective housing with the left side shell of the unfolding unit; a group of jacks exist, so that when the shell of the unfolding unit is installed on the base plate of the standard unfolding unit in a planar radial unfolding layout mode after the group of jacks are matched with the bolts, the central line of each supporting rod groove of the two diagonally arranged unfolding units is coplanar with one diagonal line of the base plate of the standard unfolding unit; the other groups of jacks can ensure that when the shell of the unfolding unit is arranged on the bottom plate of the standard unfolding unit in a pneumatic self-stabilizing layout mode after one group of jacks are matched with the bolt, the sweepback angle of the extension of the supporting rod meets the corresponding requirement;
the outer side wall surface of the left side shell of the unfolding unit is also provided with a connecting hole for connecting with a standard unfolding unit bottom plate or a sail box bottom plate and a connecting hole for connecting with one side of the rear side shell of the unfolding unit;
the right side shell of the unfolding unit and the left side shell of the unfolding unit are in mirror symmetry structures and are used for being connected with the other end of the rotating shaft of the unfolding unit, the end face of the other side of the rotating shaft protection shell of the unfolding unit and the other side of the rear side shell of the unfolding unit;
a T-shaped bulge is arranged on one side of the left side shell or the right side shell of the unfolding unit and is used for being matched with a chute on the bottom plate of the standard unfolding unit, so that the unfolding unit shell is mounted on the bottom plate of the standard unfolding unit in a pneumatic self-stabilizing layout mode, and the length direction of the T-shaped bulge is perpendicular to the plane of the shell at the rear side of the unfolding unit;
the top edge of the rear side shell of the unfolding unit is provided with a connecting hole which is connected with a standard unfolding unit bottom plate or a sail box bottom plate.
Furthermore, the connection holes in the left side shell of the unfolding unit, the right side shell of the unfolding unit and the rear side shell of the unfolding unit, which are used for being connected with the standard unfolding unit bottom plate or the sail box bottom plate, are realized in a mode that cube protruding blocks are arranged on the end face of the shell, and the connection holes are arranged in the cube protruding blocks.
Furthermore, the standard unfolding unit bottom plate is a square bottom plate, bearing holes are arranged at four corners, and sliding grooves perpendicular to corresponding sides are arranged on four sides and are used for being matched with the T-shaped protrusions.
Further, the driving system comprises a gear motor, a motor seat, a motor gear, four connecting shaft gears, four connecting shafts and four groups of bevel gear sets; the gear motor is arranged at the center of the standard unfolding unit bottom plate through a motor seat, motor gears and four connecting shaft gears are arranged at the back of the standard unfolding unit bottom plate, the four connecting shaft gears are arranged at the periphery of the motor gears, and the gear motor is driven to rotate through the gear motor, so that the four connecting shaft gears are driven to synchronously rotate; the connecting shaft gear is arranged at one end of the connecting shaft, and the connecting shaft is matched with bearing holes arranged at four corners of the bottom plate of the standard unfolding unit through bearings;
when the plane radial unfolding layout is adopted, the connecting shaft is fixedly connected with the unfolding unit rotating shaft of a certain unfolding unit coaxially, and the connecting shaft can drive the unfolding unit rotating shaft to synchronously rotate;
when the pneumatic self-stabilization layout is adopted, the top of the connecting shaft is matched with the end part of the rotating shaft of the unfolding unit corresponding to the unfolding unit through a group of bevel gears, so that the rotating shaft of the unfolding unit is driven to synchronously rotate through the connecting shaft.
Furthermore, the resistance sail shell is of a cube structure formed by four shell door plates, a shell bottom plate, a shell top plate and shell door plate hinges, and the outer coating of the whole device is formed together; the shell top plate is fixed on the upper side of the sail box partition plate; the shell bottom plate is connected to the lower side of the standard unfolding unit bottom plate; the lower edges of the four shell door plates are connected with four sides of the shell bottom plate through shell door plate hinges, round holes are formed in the upper edges of the four shell door plates, and the four shell door plates are connected with the shell top plate through binding wires penetrating through the round holes; the unlocking device can cut off the binding wire to unlock the resistance sail shell.
Furthermore, the unlocking device adopts a hot knife to fuse the unlocking device.
Further, the support rod is made of bistable composite material.
Advantageous effects
The beneficial effects of the invention are as follows:
1. compared with the existing resistance sail design with a single layout form, the resistance sail design method has the advantages that the resistance sails with different layout forms can be conveniently realized by adopting the standardized and modularized standard unfolding units and different installation modes of the standard unfolding units, more task requirements can be met, and more cube stars with different configurations can be adapted.
2. The invention can simplify the scheme design process of the cube star and shorten the design period of the cube star by adopting the standardized and modularized standard unfolding unit.
3. The invention adopts the standardized and modularized standard unfolding unit, is easy to realize large-batch production and saves the cube star launching cost.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic perspective view of a standard developing unit 20 according to the present invention
FIG. 2 is an exploded view of a standard deployment unit 20 of the present invention
Fig. 3 is an assembly schematic diagram of the unfolding unit rotary shaft protection shell 5 according to the present invention
FIG. 4 is a schematic view of the base plate structure of the standard developing device of the present invention
FIG. 5 is a schematic view of a transmission device according to the present invention
FIG. 6 is a schematic view of a radially expanded arrangement of the present invention
FIG. 7 is a schematic view of the self-stabilizing arrangement of the present invention
FIG. 8 is a schematic view of a self-stabilizing arrangement of the present invention
FIG. 9 is a schematic perspective view of the radial expansion arrangement of the present invention
FIG. 10 is a schematic perspective view showing a folded state of the present invention
FIG. 11 is a schematic view of a radially expanded arrangement of the present invention
FIG. 12 is an expanded view of the self-stabilizing arrangement of the present invention
Wherein: 1 is a left side shell of a unfolding unit, 2 is a rear side shell of the unfolding unit, 3 is a right side shell of the unfolding unit, 4 is a rotating shaft of the unfolding unit, 5 is a protective shell of the unfolding unit, 6 is a bearing of the unfolding unit, 7 is a gear motor, 8 is a motor base, 9 is a base plate of a standard unfolding device, 10 is a base plate chute of the unfolding device, 11 is a chute baffle plate the device comprises a base plate bearing of a unfolding device, a bearing cover, a connecting shaft gear, a motor gear, a bevel gear set, a sail box base plate, a sail box partition plate, a standard unfolding unit, a shell door plate, a shell base plate, a shell top plate and a shell door plate hinge, wherein the base plate bearing of the unfolding device is 12, the bearing cover is 13, the connecting shaft is 14, the connecting shaft gear is 15, the motor gear is 16, the bevel gear set is 17, the sail box base plate is 18, the sail box partition plate is 19, the standard unfolding unit is 20, the shell door plate is 21, the shell base plate is 22, the shell top plate is 23, and the shell door plate hinge is 24.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The embodiment provides a high-standardization and high-modularization resistance sail, does not need additional design modification flow, can realize conversion between planar layout and pneumatic self-stabilization layout by using a standard modularization unfolding device, greatly improves the application range of the resistance sail, and saves the time for designing different resistance sail structures aiming at different cube star schemes.
The standard modularized resistance sail device for the cube star off-orbit comprises four groups of standard unfolding units, a standard unfolding unit bottom plate, a driving system, a sail box, a resistance sail shell and an unlocking device.
As shown in fig. 1 to 3, the outer envelope of the standard deployment unit is a cuboid, and comprises a deployment unit rotating shaft, a bistable composite material supporting rod for deploying a resistance sail, a deployment unit rotating shaft protecting shell and a deployment unit shell.
The two ends of the unfolding unit rotating shaft are arranged on the unfolding unit shell through bearings; the two ends of the unfolding unit rotating shaft protecting shell are fixedly arranged on the unfolding unit shell, the unfolding unit rotating shaft protecting shell is provided with a supporting rod groove for the supporting rod to extend out, and the length direction of the supporting rod groove is axially parallel to the unfolding unit rotating shaft; the support rod is wound on the unfolding unit rotating shaft, and when the unfolding unit rotating shaft rotates, the support rod can extend out of the support rod groove.
The outer shell of the unfolding unit is provided with two groups of connecting structures which are used for fixing the standard unfolding unit between the base plate of the standard unfolding unit and the base plate of the sail box, so that the standard unfolding unit can be utilized to realize planar radial unfolding layout and pneumatic self-stabilizing layout;
when the planar radial expansion layout is adopted, four groups of expansion units are respectively arranged at four corners of the standard expansion unit bottom plate, and the expansion unit rotating shafts of each group of expansion units are perpendicular to the plane of the standard expansion unit bottom plate; the center line of the supporting rod groove of each of the two diagonally arranged unfolding units is coplanar with one diagonal line of the base plate of the standard unfolding unit, and the supporting rod groove faces to the outside.
When the pneumatic self-stabilization layout is adopted, four groups of unfolding units are respectively arranged at the middle positions of four sides of the base plate of the standard unfolding unit, and the rotating shafts of the unfolding units of each group of unfolding units are parallel to the corresponding edges of the base plate of the standard unfolding unit; in each group of unfolding units, the included angle between the plane formed by the central line of the supporting rod groove and the central axis of the rotating shaft of the unfolding unit and the plane of the bottom plate of the standard unfolding unit is the same, and the supporting rod groove faces to one side of the outside close to the sail box.
In this embodiment, the casing of the unfolding unit adopts a concave open structure formed by a left casing of the unfolding unit, a rear casing of the unfolding unit and a right casing of the unfolding unit.
The middle part of the shell at the left side of the unfolding unit is provided with a bearing hole for installing the bearing of the unfolding unit and is matched with one end of the rotating shaft of the unfolding unit.
Four groups of jacks are also arranged on the wall surface of the shell at the left side of the unfolding unit, and the centers of all the jacks are positioned on the same circular arc taking the center of the bearing hole as the center of a circle; the jack is used for being matched with a bolt on one side end face of the unfolding unit rotating shaft protective housing, and the unfolding unit rotating shaft protective housing is connected with the left side shell of the unfolding unit.
As shown in fig. 3, a set of insertion holes are shown in black, and when the casing of the unfolding unit is mounted on the base plate of the standard unfolding unit in a planar radial unfolding layout after the insertion holes are matched with the insertion pins, the central line of each supporting rod groove of the two diagonally arranged unfolding units is coplanar with one diagonal line of the base plate of the standard unfolding unit; and the other three groups of jacks are used for adjusting the sweepback angle of the resistance sail, namely, after one group of jacks are matched with the bolts, when the outer shell of the unfolding unit is installed on the bottom plate of the standard unfolding unit in a pneumatic self-stabilizing layout mode, the sweepback angle of the supporting rod stretches out meets corresponding requirements.
The outer side wall surface of the left side shell of the unfolding unit is also provided with a connecting hole for connecting with a standard unfolding unit bottom plate or a sail box bottom plate and a connecting hole for connecting with one side of the rear side shell of the unfolding unit.
The right side shell of the unfolding unit and the left side shell of the unfolding unit are in mirror symmetry structures and are used for being connected with the other end of the rotating shaft of the unfolding unit, the end face of the other side of the rotating shaft protection shell of the unfolding unit and the other side of the rear side shell of the unfolding unit.
The top edge of the rear side shell of the unfolding unit is provided with a connecting hole which is connected with a standard unfolding unit bottom plate or a sail box bottom plate.
In this embodiment, the connection holes in the left side casing of the deployment unit, the right side casing of the deployment unit, and the rear side casing of the deployment unit, which are used for connection with the standard deployment unit base plate or the sail box base plate, are all implemented by arranging cube bumps on the end surfaces of the casings, and arranging connection holes in the cube bumps.
A T-shaped bulge is arranged on one side of the left side shell or the right side shell of the unfolding unit and is used for being matched with a chute on the bottom plate of the standard unfolding unit, so that the unfolding unit shell is mounted on the bottom plate of the standard unfolding unit in a pneumatic self-stabilizing layout mode; and the length direction of the T-shaped bulge is perpendicular to the plane of the shell at the rear side of the unfolding unit, so that the installation azimuth requirement is ensured.
As shown in fig. 2, the assembly flow of the standard expansion unit is as follows: firstly, the unfolding unit bearing is assembled into bearing holes in the middle of the left side shell and the right side shell of the unfolding unit, then the unfolding unit rotating shaft is inserted into the unfolding unit bearing, and meanwhile, the rear side shell of the unfolding unit is matched with the left side shell of the unfolding unit, so that single-side complete matching is formed. As shown in fig. 3, after the single-side matching is achieved, the unfolding unit rotating shaft protection shell is installed, and the cylinder bolts on the side surface of the unfolding unit rotating shaft protection shell are inserted into one group of jacks in the multiple groups of jacks on the left side shell of the unfolding unit, as described above: when the planar radial unfolding layout is required to be realized, the cylindrical bolts (namely black protrusions in fig. 3) at the supporting rod grooves of the rotating shaft protecting shell of the unfolding unit are matched with a group of jacks (namely black holes in fig. 3) at the most edge, in this form, the centers of the supporting rod grooves are coplanar with the diagonal line of the bottom plate of the standard unfolding unit, and the supporting rods radially extend out of the bottom plate to realize planar radial unfolding. When the pneumatic self-stabilization unfolding layout is required to be realized, the cylinder bolt (namely black protrusion in fig. 3) at the supporting rod groove of the unfolding unit rotating shaft protecting shell is matched with a certain group of jacks, and different jacks are selected in the form, so that the plane formed by the central line of the supporting rod groove and the central axis of the unfolding unit rotating shaft presents different angles, and the supporting rod obtains adjustable sweepback angle so as to meet different task requirements. And finally, after the unfolding unit rotating shaft protective shell is matched with the single side of the standard unfolding unit, assembling the right side shell of the unfolding unit with the front side shell of the standard unfolding unit, and completing the assembly of the standard unfolding unit. The process is merely an exemplary process, and reasonable adjustments and modifications may be made.
As shown in fig. 4, the standard unfolding unit bottom plate is a square bottom plate, bearing holes for assembling the unfolding device bottom plate bearings are formed in four corners, the bearing holes are lower than the upper surface of the bottom plate, and a bearing gland is arranged above the unfolding device bottom plate bearings and used for limiting the positions of the bearings. And sliding grooves perpendicular to the corresponding edges are arranged on four edges of the bottom plate of the standard unfolding unit and are used for being matched with the T-shaped protrusions, and the sliding grooves are matched with the sliding groove baffles to limit the movement of the standard unfolding unit. Under the pneumatic self-stabilization unfolding layout, the bottom plate chute of the unfolding device is matched with the T-shaped bulge at the lower part of the shell at the left side of the unfolding unit, and the bottom plate chute of the unfolding device does not work under the planar radial unfolding layout.
The driving mechanism can drive the unfolding unit rotating shafts of the four groups of standard unfolding units to synchronously rotate, so that the supporting rods of the four groups of standard unfolding units synchronously extend out of the corresponding supporting rod grooves.
As shown in fig. 4 and 5, in this embodiment, the driving system includes a gear motor, a motor base, a motor gear, four connecting shaft gears, four connecting shafts, and four bevel gear sets. The gear motor is arranged at the center of the standard unfolding unit bottom plate through a motor seat, motor gears and four connecting shaft gears are arranged on the lower side surface of the standard unfolding unit bottom plate, the four connecting shaft gears are arranged on the periphery of the motor gears, and the motor gears are driven to rotate through the gear motor, so that the four connecting shaft gears are driven to synchronously rotate; the connecting shaft gear is arranged at one end of the connecting shaft, and the connecting shaft is matched with bearing holes arranged at four corners of the standard unfolding unit bottom plate through bearings.
When the plane radial unfolding layout is adopted, the connecting shaft is fixedly connected with the unfolding unit rotating shaft of a certain unfolding unit coaxially, and the unfolding unit rotating shaft can be driven to synchronously rotate through the connecting shaft.
When the pneumatic self-stabilization layout is adopted, the top of the connecting shaft is matched with the end part of the rotating shaft of the unfolding unit corresponding to the unfolding unit through a group of bevel gears, so that the rotating shaft of the unfolding unit is driven to synchronously rotate through the connecting shaft.
The sail box is provided with a sail box bottom plate and a sail box clapboard; the sail box partition boards are distributed in a cross shape and are fixed on the upper side of the sail box bottom board, when the planar radial unfolding layout is adopted, the sail box partition boards are correspondingly overlapped with two diagonal lines of the standard unfolding unit bottom board, and when the pneumatic self-stabilizing layout is adopted, the sail box partition boards are correspondingly vertical to four edges of the standard unfolding unit bottom board.
The resistance sail housing is wrapped outside the standard deployment unit base plate, deployment unit, drive system and sail bin and can be opened under the action of the unlocking device.
In this embodiment, the resistance sail housing is a cube structure formed by four housing door panels, a housing bottom plate, a housing top plate, and housing door panel hinges, which together form an outer envelope of the entire device; the shell top plate is fixed on the upper side of the sail box partition plate; the shell bottom plate is connected to the lower side of the standard unfolding unit bottom plate and is connected through a short shaft, and a space for placing a motor gear and a connecting shaft gear is formed at the lower part of the standard unfolding device bottom plate; the lower edges of the four shell door plates are connected with four sides of the shell bottom plate through shell door plate hinges, round holes are formed in the upper edges of the four shell door plates, and the four shell door plates are connected with the shell top plate through binding wires penetrating through the round holes; the unlocking device can cut off the binding wire to unlock the resistance sail shell. In this embodiment, the unlocking device adopts a thermal knife to fuse the unlocking device, and is arranged on the top plate of the shell and used for fusing the binding wire connected with the door plate of the shell.
Fig. 6 and 7 illustrate the connection of a standard deployment unit to a standard deployment device base plate in a planar radial deployment configuration and a pneumatically self-stabilizing deployment configuration, respectively.
For a planar radial expansion layout, the arrangement of the standard expansion units is as follows: after the standard unfolding unit is assembled, the rotating shaft of the unfolding unit exceeds the outer side plane of the right side shell of the unfolding unit, the exceeding part of the rotating shaft is inserted into a connecting shaft assembled on the bottom plate of the standard unfolding device, the connecting shaft is coaxially connected with the rotating shaft of the unfolding unit by utilizing a screw, and meanwhile, the position of the standard unfolding unit is fixed by utilizing a corresponding screw hole on the right side shell of the unfolding unit and the bottom plate of the standard unfolding device, so that the rotation of driving the connecting shaft by utilizing the rotation of a gear motor is realized, and the rotation of the rotating shaft of the unfolding unit is driven.
For a pneumatic self-stabilizing deployment layout, the standard deployment unit arrangement is: firstly, pushing a standard unfolding unit to the tail end of a bottom plate chute of the unfolding unit by utilizing the cooperation of the bottom plate chute of the unfolding unit and a T-shaped protrusion at the lower part of a left shell of the unfolding unit, and then arranging and connecting a chute baffle plate in a side surface groove of the bottom plate of the standard unfolding unit to limit the displacement of the standard unfolding unit; the transmission process design for this layout is as follows: the part of the unfolding unit rotating shaft beyond the outer side of the right side shell of the unfolding unit is connected with the bevel gear set, meanwhile, the bevel gear set is also connected to the connecting shaft, bevel gears at two ends are meshed with each other, so that the connecting shaft drives the unfolding unit rotating shaft to rotate, and the pneumatic self-stabilizing unfolding layout is realized.
Fig. 8 and 9 are schematic views of the whole structure of two layouts, mainly illustrating the arrangement of the sail cases, and the angles of the partition plates of the sail cases required by the two layouts are different, but the same principle is satisfied, that is, the direction of the partition plates of the sail case is the same as the extending direction of the support rods. Under the two arrangements, the position of the base plate of the sail box is not different, and the base plate is matched with the corresponding screw hole of the standard unfolding unit.
As shown in fig. 10, the resistance sail is in a rectangular parallelepiped (this example is compatible with 1U cube star, but the invention is not limited to the dimensions presented in the present example) with a configuration that is easy to assemble with the cube star and does not affect the overall shape of the cube star.
Fig. 11 and 12 are expanded views of two layouts, in which a black straight line is used instead of the support bar structure.
So far, the assembly process and principle of the invention are explained clearly as far as possible, it is understood that the above description is illustrative and not to be construed as limiting the invention, and that modifications, variations, alternatives and variants can be made to this example by a person skilled in the art in the principle of the invention.
Claims (8)
1. A modular drag sail device for cube satellite off-track, characterized by: the device comprises four groups of standard unfolding units, a standard unfolding unit bottom plate, a driving system, a sail box, a resistance sail shell and an unlocking device;
the standard unfolding unit comprises an unfolding unit rotating shaft, a supporting rod for unfolding the resistance sail, an unfolding unit rotating shaft protecting shell and an unfolding unit shell;
the two ends of the unfolding unit rotating shaft are arranged on the unfolding unit shell through bearings; the two ends of the unfolding unit rotating shaft protecting shell are fixedly arranged on the unfolding unit shell, the unfolding unit rotating shaft protecting shell is provided with a supporting rod groove for the supporting rod to extend out, and the length direction of the supporting rod groove is axially parallel to the unfolding unit rotating shaft; the support rod is wound on the unfolding unit rotating shaft, and when the unfolding unit rotating shaft rotates, the support rod can extend out of the support rod groove;
the outer shell of the unfolding unit is provided with two groups of connecting structures which are used for fixing the standard unfolding unit between the base plate of the standard unfolding unit and the base plate of the sail box, so that the standard unfolding unit can be used for realizing planar radial unfolding layout and pneumatic self-stabilizing layout;
when the plane radial expansion layout is adopted, four groups of standard expansion units are respectively arranged at four corners of the standard expansion unit bottom plate, and the expansion unit rotating shafts of each group of standard expansion units are perpendicular to the plane of the standard expansion unit bottom plate; the central line of each supporting rod groove of the two groups of diagonally arranged standard unfolding units is coplanar with one diagonal line of the bottom plate of the standard unfolding unit, and the supporting rod groove faces to the outside;
when the pneumatic self-stabilization layout is adopted, four groups of standard unfolding units are respectively arranged at the middle positions of four sides of the base plate of the standard unfolding unit, and the rotating shafts of the unfolding units of each group of standard unfolding units are parallel to the corresponding edges of the base plate of the standard unfolding unit; in each group of standard unfolding units, the included angle between the plane formed by the central line of the supporting rod groove and the central axis of the rotating shaft of the unfolding unit and the plane of the bottom plate of the standard unfolding unit is the same, and the supporting rod groove faces to one side of the outside close to the sail box;
the driving mechanism can drive the unfolding unit rotating shafts of the four groups of standard unfolding units to synchronously rotate, so that the supporting rods of the four groups of standard unfolding units synchronously extend out of the corresponding supporting rod grooves;
the sail box is provided with a sail box bottom plate and a sail box clapboard; the sail box partition plates are distributed in a cross manner and are fixed on the upper side of the sail box bottom plate, when the planar radial unfolding layout is adopted, the sail box partition plates are correspondingly overlapped with two diagonal lines of the standard unfolding unit bottom plate, and when the pneumatic self-stabilizing layout is adopted, the sail box partition plates are correspondingly vertical to four edges of the standard unfolding unit bottom plate;
the resistance sail shell is coated on the outer sides of the base plate of the standard unfolding unit, the driving system and the sail box and can be opened under the action of the unlocking device to expose the sail box and the standard unfolding unit.
2. A modular drag sail device for cube stars off-track, as claimed in claim 1, wherein: the unfolding unit shell adopts a concave open structure consisting of a left side shell of the unfolding unit, a rear side shell of the unfolding unit and a right side shell of the unfolding unit;
the middle part of the shell at the left side of the unfolding unit is provided with a bearing hole for installing a bearing and is matched with one end of the rotating shaft of the unfolding unit;
a plurality of groups of jacks are also arranged on the wall surface of the shell at the left side of the unfolding unit, and the centers of all jacks are positioned on the same circular arc taking the center of the bearing hole as the center of a circle; the jack is used for being matched with a bolt on one side end face of the unfolding unit rotating shaft protective housing to connect the unfolding unit rotating shaft protective housing with the left side shell of the unfolding unit; a group of jacks exist, so that when the shell of the unfolding unit is installed on the base plate of the standard unfolding unit in a planar radial unfolding layout mode after the group of jacks are matched with the bolts, the central line of each supporting rod groove of the two diagonally arranged unfolding units is collinear with one diagonal line of the base plate of the standard unfolding unit; the other groups of jacks can ensure that when the shell of the unfolding unit is arranged on the bottom plate of the standard unfolding unit in a pneumatic self-stabilizing layout mode after one group of jacks are matched with the bolt, the sweepback angle of the extension of the supporting rod meets the corresponding requirement;
the outer side wall surface of the left side shell of the unfolding unit is also provided with a connecting hole for connecting with a standard unfolding unit bottom plate or a sail box bottom plate and a connecting hole for connecting with one side of the rear side shell of the unfolding unit;
the right side shell of the unfolding unit and the left side shell of the unfolding unit are in mirror symmetry structures and are used for being connected with the other end of the rotating shaft of the unfolding unit, the end face of the other side of the rotating shaft protection shell of the unfolding unit and the other side of the rear side shell of the unfolding unit;
a T-shaped bulge is arranged on one side of the left side shell or the right side shell of the unfolding unit and is used for being matched with a chute on the bottom plate of the standard unfolding unit, so that the unfolding unit shell is mounted on the bottom plate of the standard unfolding unit in a pneumatic self-stabilizing layout mode, and the length direction of the T-shaped bulge is perpendicular to the plane of the shell at the rear side of the unfolding unit;
the top edge of the outer shell at the rear side of the unfolding unit is provided with a connecting hole connected with the bottom plate of the sail box.
3. A modular drag sail device for cube star off track, as claimed in claim 2, wherein: the left side shell of the unfolding unit, the right side shell of the unfolding unit and the connecting holes in the rear side shell of the unfolding unit, which are used for being connected with a standard unfolding unit bottom plate or a sail box bottom plate, are realized in a mode that cube protruding blocks are arranged on the end face of the shell, and the connecting holes are arranged in the cube protruding blocks.
4. A modular drag sail device for cube star off track, according to claim 2 or 3, wherein: the standard expansion unit bottom plate is a square bottom plate, bearing holes are arranged at four corners, and sliding grooves perpendicular to corresponding sides are arranged on four sides and are used for being matched with the T-shaped protrusions.
5. A modular drag sail device for cube stars off-track, as claimed in claim 1, wherein: the driving system comprises a gear motor, a motor seat, motor gears, four connecting shaft gears, four connecting shafts and four groups of bevel gear sets; the gear motor is arranged at the center of the standard unfolding unit bottom plate through a motor seat, motor gears and four connecting shaft gears are arranged on the lower side surface of the standard unfolding unit bottom plate, the four connecting shaft gears are arranged on the periphery of the motor gears, and the motor gears are driven to rotate through the gear motor, so that the four connecting shaft gears are driven to synchronously rotate; the connecting shaft gear is arranged at one end of the connecting shaft, and the connecting shaft is matched with bearing holes arranged at four corners of the bottom plate of the standard unfolding unit through bearings;
when the plane radial unfolding layout is adopted, the connecting shaft is fixedly connected with the unfolding unit rotating shaft of a certain unfolding unit coaxially, and the connecting shaft can drive the unfolding unit rotating shaft to synchronously rotate;
when the pneumatic self-stabilization layout is adopted, the top of the connecting shaft is matched with the end part of the rotating shaft of the unfolding unit corresponding to the unfolding unit through a group of bevel gears, so that the rotating shaft of the unfolding unit is driven to synchronously rotate through the connecting shaft.
6. A modular drag sail device for cube stars off-track, as claimed in claim 1, wherein: the resistance sail shell is of a cube structure formed by four shell door plates, a shell bottom plate, a shell top plate and a shell door plate hinge, and the outer coating of the whole device is formed together; the shell top plate is fixed on the upper side of the sail box partition plate; the shell bottom plate is connected to the lower side of the standard unfolding unit bottom plate; the lower edges of the four shell door plates are connected with four sides of the shell bottom plate through shell door plate hinges, round holes are formed in the upper edges of the four shell door plates, and the four shell door plates are connected with the shell top plate through binding wires penetrating through the round holes; the unlocking device can cut off the binding wire to unlock the resistance sail shell.
7. A modular drag sail device for cube stars off-track, as claimed in claim 1, wherein:
the unlocking device adopts a hot knife to fuse the unlocking device.
8. A modular drag sail device for cube stars off-track, as claimed in claim 1, wherein:
the support rod is made of bistable composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310048365.0A CN116039969A (en) | 2023-01-31 | 2023-01-31 | Standard modularized resistance sail device for off-orbit of cube star |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310048365.0A CN116039969A (en) | 2023-01-31 | 2023-01-31 | Standard modularized resistance sail device for off-orbit of cube star |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116039969A true CN116039969A (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310048365.0A Pending CN116039969A (en) | 2023-01-31 | 2023-01-31 | Standard modularized resistance sail device for off-orbit of cube star |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116039969A (en) |
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2023
- 2023-01-31 CN CN202310048365.0A patent/CN116039969A/en active Pending
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