CN115924134B - Off-orbit sailing device and satellite - Google Patents
Off-orbit sailing device and satellite Download PDFInfo
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- CN115924134B CN115924134B CN202211626982.6A CN202211626982A CN115924134B CN 115924134 B CN115924134 B CN 115924134B CN 202211626982 A CN202211626982 A CN 202211626982A CN 115924134 B CN115924134 B CN 115924134B
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- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 73
- 101000606504 Drosophila melanogaster Tyrosine-protein kinase-like otk Proteins 0.000 claims abstract description 54
- 229920001721 polyimide Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 description 12
- 239000012634 fragment Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The invention relates to the technical field of satellites, in particular to an off-orbit sail device and a satellite. The off-track sailing device comprises a box body, a rotating shaft, a locking assembly, an off-track sail and a plurality of memory alloy rods, wherein the box body comprises a top plate, a bottom plate and a plurality of side plates, and the side plates are movably arranged between the top plate and the bottom plate in a surrounding mode. The rotating shaft is rotatably arranged between the top plate and the bottom plate, and the locking assembly can lock or unlock the rotating shaft. The center of the off-track sail is fixed in the box body, and the plurality of side plates are respectively connected with the outer edge of the off-track sail. One end of each memory alloy rod is connected with the corresponding side plate, and the other end of each memory alloy rod is fixedly arranged on the rotating shaft. The memory alloy rods are wound on the rotating shaft, so that the side plates are spliced and connected, and the off-track sails are folded and folded in the box body; or the memory alloy rods are outwards stretched and reset after the rotating shaft is unlocked and drive the side plates to move away from the rotating shaft so as to spread the off-track sail. The satellite can be separated from the orbit through the off-orbit sailing device and falls into the atmosphere to burn out, so that the satellite is prevented from being space debris.
Description
Technical Field
The invention relates to the technical field of satellites, in particular to an off-orbit sail device and a satellite.
Background
The cubic satellite (cubic satellite for short) is a micro-nano satellite with standardized volume and shape, and has the advantages of low cost, short development period, high functional density and the like. The cube star generally flies on a low earth orbit, and after the mission is completed, the cube star can become space debris if the cube star is not subjected to off-orbit treatment, so that the safety of an on-orbit aircraft is affected.
Currently, the main off-track modes of the cube star include propulsion technology, inflation balloon technology, electric power tethers and the like. The propulsion technology needs to consume the propellant on the cubic star, increases the overall quality of the cubic star, and needs continuous thrust vector control in the off-orbit process, so that the overall technical difficulty is high. The inflatable balloon technology has the risk of high-pressure gas leakage in the balloon, and reduces the reliability of the off-orbit process of the cube star. The rope body in the electrodynamic force rope can reach tens of meters or even kilometers after being unfolded, so that the safe operation of the cube star is easily influenced, and the reliability of the off-orbit process of the cube star is also reduced.
Therefore, there is a need for an off-orbit sail device and satellite to solve the above problems.
Disclosure of Invention
The invention aims to provide an off-orbit sailing device and a satellite, so that the satellite in a near-earth orbit can be safely and reliably separated from the orbit, and the satellite is prevented from being a space fragment.
The technical scheme adopted by the invention is as follows:
an off-track sail device, comprising:
the box body comprises a top plate, a bottom plate and a plurality of side plates, wherein the side plates are movably arranged between the top plate and the bottom plate in a surrounding manner;
the rotating shaft is rotatably arranged between the top plate and the bottom plate, and the locking component can lock or unlock the rotating shaft;
the center of the off-track sail is fixed in the box body, and the side plates are respectively connected with the outer edges of the off-track sail; and
one ends of the memory alloy rods are respectively connected with the corresponding side plates, and the other ends of the memory alloy rods are fixedly arranged on the rotating shaft; the memory alloy rods are wound on the rotating shaft, so that the side plates are connected in a spliced mode, and the off-track sails are folded and folded in the box body; or the memory alloy rods are outwards stretched and reset after the rotating shaft is unlocked, and drive the side plates to move away from the rotating shaft so as to unfold the off-track sail.
As a preferable scheme, the off-track sail is formed by splicing a plurality of split sails; one split sail is arranged between two adjacent memory alloy rods, the central corner part of the split sail is fixedly arranged in the box body, and the two corner parts are respectively connected with two adjacent side plates.
Preferably, the side plate includes:
the main body plates are movably arranged between the top plate and the bottom plate in a surrounding mode; and
the switching piece is fixedly arranged on the inner side of the main body plate, is connected with one end of the corresponding memory alloy rod, and is respectively connected with the corner parts of the two adjacent split sails.
As a preferable scheme, the side plate further comprises two elastic pieces, one ends of the two elastic pieces are connected with the adapter, and the other ends of the two elastic pieces are connected with the corner parts of the two adjacent split sails respectively.
As a preferable scheme, the off-track sailing device further comprises a storage cover, wherein one storage cover is arranged between two adjacent memory alloy rods, and the storage cover is provided with an opening facing to the outer side; the central angle part of the split sail is fixedly arranged in the corresponding storage cover, and the two corner parts of the split sail respectively extend out of the opening of the storage cover and are correspondingly connected with the two adjacent side plates.
As a preferable scheme, the off-track sailing device further comprises a guide post, wherein the guide post is rotatably arranged between the top plate and the bottom plate; the two sides of each memory alloy rod perpendicular to the extending direction are provided with the guide posts.
Preferably, a group of guide posts is arranged on two sides of each memory alloy rod perpendicular to the extending direction, each group is provided with a plurality of guide posts which are arranged at intervals, and a telescopic channel of the memory alloy rod is formed between the two groups of guide posts.
As a preferable scheme, the corner positions of the upper end face of the top plate are provided with protruding blocks, and the protruding blocks can be abutted to the outer surface of the star of the satellite, so that an avoidance space is formed between the upper end face of the top plate and the outer surface of the star.
Preferably, the off-track sail is a polyimide film with double-sided aluminized surfaces.
The satellite comprises a star body and the off-orbit sail device, wherein the top plate of the off-orbit sail device is arranged on the star body.
The beneficial effects of the invention are as follows:
according to the off-orbit sail device, after the satellite on the near-earth orbit reaches the service life, the locking component unlocks the rotating shaft, the memory alloy rods extend outwards to reset and drive the side plates to move away from the rotating shaft so as to spread the off-orbit sail, so that the rarefaction atmospheric resistance of the satellite when flying in the near-earth orbit is increased, the flying speed of the satellite is reduced, the satellite is enabled to deviate from the orbit and fall into the atmosphere to be burnt, and the satellite is prevented from being space fragments. The off-orbit sail device has a simple structure, can realize the reliable unfolding of the off-orbit sail through the automatic recovery characteristic of the memory alloy rod, does not need to additionally control the unfolding process of the off-orbit sail, reduces the control difficulty of the off-orbit sail device, improves the reliability of the unfolding process of the off-orbit sail, can realize that the satellite in the near-earth orbit is safely and reliably separated from the orbit and falls into the atmosphere to burn out, avoids the satellite from becoming space debris, and simultaneously ensures the safety of other spacecrafts on the near-earth orbit.
The satellite provided by the invention comprises the off-orbit sail device, the off-orbit sail device is simple in structure, the off-orbit sail can be reliably unfolded through the automatic recovery characteristic of the memory alloy rod, the unfolding process of the off-orbit sail is not required to be additionally controlled, the control difficulty of the off-orbit sail device is reduced, the reliability of the unfolding process of the off-orbit sail is improved, the satellite in the near-earth orbit can be safely and reliably separated from the orbit and falls into the atmosphere to be burnt, the satellite is prevented from becoming space fragments, and the safety of other spacecrafts on the near-earth orbit is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an off-track sail device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an internal structure of the off-track sailing device when the rotating shaft is locked according to the embodiment of the present invention;
fig. 3 is a schematic diagram of an internal structure of the off-track sailing device when the rotating shaft is unlocked according to the embodiment of the present invention;
FIG. 4 is a schematic structural view of a spindle according to an embodiment of the present invention;
FIG. 5 is a schematic view of the configuration of an off-track sail provided by an embodiment of the present invention;
fig. 6 is a schematic structural view of a side plate according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an off-track sail device provided in an embodiment of the invention, with the top plate, the side plates, the memory alloy rods and the off-track sails removed.
The parts in the figures are named and numbered as follows:
1. a top plate; 11. a through hole; 12. a bump; 13. an observation hole; 2. a bottom plate; 3. a side plate; 31. a main body plate; 32. a transfer block; 321. a vertical plate; 322. a cross plate; 33. an elastic member; 4. a rotating shaft; 41. a lock head; 42. a shaft cover; 43. a split shaft; 44. a positioning piece; 45. a shaft sleeve; 5. off-track sails; 51. a split sail; 511. a central corner portion; 512. corner parts; 6. a memory alloy rod; 7. a storage cover; 8. and (5) a guide post.
Detailed Description
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the invention more clear, the technical scheme of the invention is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present invention are shown.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
The present embodiment proposes a satellite that mainly orbits near the earth. Specifically, the satellite is a cubic satellite with smaller volume, and after the service life of the in-orbit cubic satellite is reached, the in-orbit cubic satellite can be changed into space debris if the in-orbit cubic satellite is not subjected to out-of-orbit treatment, so that the safe operation of the in-orbit satellite or other spacecrafts is affected.
In order to solve the above-mentioned problems, as shown in fig. 1 to 3, the present embodiment further discloses an off-orbit sailing device, which is mounted on the star body of the cube star. Specifically, the off-track sail device comprises a box body, a rotating shaft 4, a locking assembly, an off-track sail 5 and a plurality of memory alloy rods 6, wherein the box body comprises a top plate 1, a bottom plate 2 and a plurality of side plates 3, and the side plates 3 are movably arranged between the top plate 1 and the bottom plate 2 in a surrounding mode. The roof 1 sets up on the celestial body, and pivot 4 rotationally sets up between roof 1 and bottom plate 2, and locking assembly can lock or unblock pivot 4. The center of the off-track sail 5 is fixed in the box body, and a plurality of side plates 3 are respectively connected with the outer edges of the off-track sail 5. One ends of a plurality of memory alloy rods 6 are respectively connected with the corresponding side plates 3, and the other ends are fixedly arranged on the rotating shaft 4. The memory alloy rods 6 are wound on the rotating shaft 4, so that the side plates 3 are spliced and connected, and the off-track sails 5 are folded and folded in the box body. Or, the memory alloy rods 6 are stretched outwards to reset after the rotating shaft 4 is unlocked and drive the side plates 3 to move away from the rotating shaft 4 so as to spread the off-track sail 5.
The memory alloy rod 6 in the normal state is in a natural straightened state. The memory alloy rod 6 has good elasticity and can be correspondingly bent or bent and deformed after being subjected to external force. When the external force is removed, the memory alloy rod 6 can automatically return to the straightened state. In this embodiment, the plurality of memory alloy rods 6 are wound around the rotating shaft 4 by rotating the rotating shaft 4, and after the memory alloy rods are wound in place, the rotating shaft 4 is locked, i.e. the rotating shaft 4 cannot rotate, so that the memory alloy rods 6 are stably wound around the rotating shaft 4. When the rotating shaft 4 is unlocked, the memory alloy rod 6 drives the rotating shaft 4 to rotate and restore to a straightened state.
When the satellite on the near-earth orbit reaches the service life, the locking component unlocks the rotating shaft 4, the memory alloy rods 6 extend outwards to reset and drive the side plates 3 to move away from the rotating shaft 4 so as to spread the off-orbit sail 5, so that the rarefaction atmospheric resistance of the satellite when flying in the near-earth orbit is increased, the flying speed of the satellite is reduced, the satellite is enabled to deviate from the orbit and fall into the atmosphere in an accelerating way to burn, and the satellite is prevented from being space fragments. The off-orbit sail device is simple in structure, the reliability of the off-orbit sail 5 can be realized through the automatic recovery characteristic of the memory alloy rod 6, the unfolding process of the off-orbit sail 5 is not required to be additionally controlled, the control difficulty of the off-orbit sail device is reduced, the reliability of the unfolding process of the off-orbit sail 5 is improved, the satellite in the near-earth orbit can be safely and reliably separated from the orbit and falls into the atmosphere to be burnt, the satellite is prevented from becoming space fragments, and the safety of other spacecrafts on the near-earth orbit is ensured.
The off-track sail 5 of the embodiment is a double-sided aluminized polyimide film, has the advantages of thin thickness, high structural strength, convenient folding and compression, high reflectivity and capability of effectively resisting solar radiation in a space environment.
As shown in fig. 2, the box body is a rectangular box body and is provided with four side plates 3 and four memory alloy rods 6, the rotating shaft 4 is rotatably arranged at the central positions of the top plate 1 and the bottom plate 2, and one ends of the four memory alloy rods 6 are fixed on the rotating shaft 4. When the four memory alloy rods 6 are wound on the rotating shaft 4, the four side plates 3 can be pulled to be spliced and connected, and the square side walls of the box body are assembled. As shown in fig. 3, when the rotating shaft 4 is unlocked, the rotating shaft 4 is in a free state, and the four memory alloy rods 6 are simultaneously stretched and reset, namely, are restored to a straightened state. At this time, the memory alloy rod 6 drives the side plate 3 connected with the memory alloy rod to be separated, so that the side plate 3 drives the edge of the off-track sail 5 to move, and the off-track sail 5 is unfolded.
As shown in fig. 4, the rotating shaft 4 of the present embodiment includes a lock 41, a shaft cover 42, split shafts 43 and a positioning member 44, wherein the split shafts 43 have four, the axes of the four split shafts 43 are arranged in a square shape and the four split shafts 43 are enclosed to form a rotating shaft main body, the upper and lower ends of the rotating shaft main body are respectively provided with the shaft cover 42, and the upper and lower ends of each split shaft 43 are respectively fixedly connected with the corresponding shaft cover 42 through bolts. The two shaft covers 42 are provided with locking heads 41 in a protruding mode, through holes 11 are formed in the center positions of the top plate 1 and the bottom plate 2, and the two locking heads 41 are respectively and rotatably arranged in the through holes 11 of the top plate 1 and the bottom plate 2 in a penetrating mode. Further, the rotating shaft 4 further comprises a shaft sleeve 45, the shaft sleeve 45 is movably installed in the through hole 11, and the lock 41 is arranged in the corresponding shaft sleeve 45 in a penetrating manner and smoothly rotates in the shaft sleeve 45.
Further, the positioning pieces 44 are mounted on the four split shafts 43, and the positioning pieces 44 can be bolts, so that one end of the memory alloy rod 6 is connected with the corresponding split shaft 43 through the bolts, and the stability of mounting the memory alloy rod 6 on the split shaft 43 is improved. An accommodating space is formed between two adjacent split shafts 43, and a positioning member 44 is installed in the corresponding accommodating space. One end of each memory alloy rod 6 extends into the four accommodating spaces and is fixedly connected with one of the split shafts 43 through a positioning piece 44. As shown in fig. 3, when the four split sails 51 are deployed, the four memory alloy rods 6 in a straightened state are distributed along the diagonal line of the box body, and the extending direction of each memory alloy rod 6 passes through the axle center of the rotating shaft 4, so as to avoid the situation that the ends of the memory alloy rods 6 bend around the periphery of the split shaft 43 and cannot be extended in place, and ensure that the split sails 51 are fully deployed.
Further, the tip of the locking head 41 is concavely formed with a groove in a straight shape so that the locking assembly locks the rotation shaft 4 through the groove. Specifically, the locking component is a hot knife component, and the hot knife component comprises a fusing module and a locking wire which is abutted with the fusing module, and when the star of the cube is electrified to the fusing module, the fusing module generates heat and fuses the locking wire. Specifically, the fusing module may be a resistor or a resistor wire, and the locking wire is made of polyethylene material, and can be fused after being heated.
As shown in fig. 1, the corner positions of the upper end surface of the top plate 1 are all provided with protruding blocks 12, and the protruding blocks 12 can be abutted against the outer surface of the star of the satellite, so that an avoidance space is formed between the upper end surface of the top plate 1 and the outer surface of the star, and the installation of the locking assembly is facilitated. In addition, the top plate 1 is further provided with an observation hole 13, so that the condition inside the box body can be conveniently checked through the observation hole 13.
It should be noted that, the four memory alloy rods 6 can be gradually wound on the rotating shaft 4 by being clamped in the groove of one of the locking heads 41 through tools such as a screwdriver, and the rotating shaft 4 is rotated, and the four side plates 3 are mutually close to each other until being spliced into a whole under the pulling of the corresponding memory alloy rods 6. At this time, both ends of the locking line are fixed on the bottom plate 2, and the middle part of the locking line passes through the groove to avoid the rotation of the rotating shaft 4, thereby realizing the locking of the rotating shaft 4. When the unlocking is needed, the fusing module is electrified, and the locking wire fuses after being heated, so that the unlocking of the rotating shaft 4 is realized. The unlocking of the rotating shaft 4 is realized by the mode of wire burning unlocking through the hot knife assembly, the structure is simple, driving parts such as a motor are not needed, and the reliability of the unlocking process of the rotating shaft 4 is improved.
As shown in fig. 3, when the rotation shaft 4 is unlocked, the rotation shaft 4 is in a free state. The four memory alloy rods 6 are stretched and reset at the same time, and are restored to a straightened state. At this time, the memory alloy rod 6 drives the side plate 3 connected with the memory alloy rod to separate and move away from the rotating shaft 4, and meanwhile, the side plate 3 drives the edge of the off-track sail 5 to move so as to spread the off-track sail 5.
As shown in fig. 3 and 5, the off-track sail 5 is composed of a plurality of split sails 51 spliced together. The off-track sail 5 of the present embodiment comprises four triangular split sails 51, each split sail 51 having three corners. One corner of the split sail 51 is fixedly mounted within the housing, being the central corner 511. The other two corners are respectively arranged on the two adjacent side plates 3 and are corner parts 512. A split sail 51 is arranged between two adjacent memory alloy rods 6, the central corner 511 of the split sail 51 is fixedly arranged in the box body, and two corner 512 are respectively connected with two adjacent side plates 3. The off-track sails 5 are arranged in a split mode, so that the unfolding difficulty of the off-track sails 5 can be reduced, and each split sail 51 can be fully unfolded.
As shown in fig. 6, the side plate 3 of the present embodiment is in a right-angle L shape, and specifically includes a main body plate 31 and an adapter block 32, where a plurality of main body plates 31 are movably enclosed between the top plate 1 and the bottom plate 2. The adapter block 32 is fixedly arranged on the inner side of the main body plate 31, and the adapter block 32 is connected with one end of the corresponding memory alloy rod 6 and is respectively connected with the corner parts 512 of the two adjacent split sails 51. Specifically, the adapter block 32 is mounted on the inner wall of the side plate 3 and located at four corner positions of the case. The pivot block 32 is provided with a vertical plate 321 and two transverse plates 322 protruding outwards, wherein two transverse plates 322 are respectively arranged on two opposite sides of the vertical plate 321. Each riser 321 is connected to one of the memory alloy bars 6 by means of a bolt, and the two cross plates 322 are respectively connected to the corner portions 512 of the different split sails 51.
Further, the side plate 3 further comprises two elastic members 33, one ends of the two elastic members 33 are connected to the adapter block 32, and the other ends are connected to the corner portions 512 of the two adjacent split sails 51. The elastic member 33 in this embodiment is a tension spring, and each transverse plate 322 is fixedly provided with a tension spring, and is elastically connected with the corner portion 512 of the corresponding split sail 51 through the tension spring. The split sails 51 are tensioned through the tension springs, so that the unfolded off-track sails 5 are always in a tensioning state, and further the off-track sails 5 are fully unfolded.
As shown in fig. 2, 3 and 7, the off-track sailing device further comprises a storage cover 7, wherein one storage cover 7 is arranged between two adjacent memory alloy rods 6, and the storage cover 7 is provided with an opening facing to the outer side. The central corner 511 of the split sail 51 is fixedly arranged in the corresponding storage cover 7, and the two corner 512 of the split sail extend out of the opening of the storage cover 7 respectively and are correspondingly connected with the two adjacent side plates 3. The storage covers 7 of the embodiment have four, each split sail 51 is folded and folded in one storage cover 7, so that the partition arrangement of each split sail 51 is realized, and the split sails 51 are prevented from interfering in the unfolding and folding processes.
As shown in fig. 3 and 7, the off-track sailing device further includes a guide post 8, where the guide post 8 is rotatably disposed between the top plate 1 and the bottom plate 2. Both sides of each memory alloy rod 6 perpendicular to the extending direction are provided with guide posts 8. The guide pillar 8 can play a guiding and limiting role in the winding and stretching resetting process of the memory alloy rod 6, and collision between the memory alloy rod 6 and the storage cover 7 is avoided, so that the memory alloy rod 6 can be rapidly stretched in place.
Further, a group of guide posts 8 are arranged on two sides of each memory alloy rod 6 perpendicular to the extending direction, each group is provided with a plurality of guide posts 8 which are arranged at intervals, and a telescopic channel of the memory alloy rod 6 is formed between the two groups of guide posts 8. Each memory alloy rod 6 can reciprocate in the telescopic channel to wind around the rotating shaft 4 or extend outwards to reset.
The satellite of the embodiment comprises the off-orbit sail device, and the reliability of the off-orbit sail 5 can be unfolded through the automatic recovery characteristic of the memory alloy rod 6, so that the satellite can be safely and reliably separated from the orbit and falls into the atmosphere to be burnt, and the satellite is prevented from being broken into space.
The above embodiments merely illustrate the basic principle and features of the present invention, and the present invention is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An off-track sail device, comprising:
the box body comprises a top plate (1), a bottom plate (2) and a plurality of side plates (3), wherein the side plates (3) are movably arranged between the top plate (1) and the bottom plate (2) in a surrounding mode;
the rotating shaft (4) and the locking component are rotatably arranged between the top plate (1) and the bottom plate (2), and the locking component can lock or unlock the rotating shaft (4);
the center of the off-track sail (5) is fixed in the box body, and the side plates (3) are respectively connected with the outer edges of the off-track sail (5); and
one ends of the memory alloy rods (6) are respectively connected with the corresponding side plates (3), and the other ends of the memory alloy rods (6) are fixedly arranged on the rotating shaft (4); the memory alloy rods (6) are wound on the rotating shaft (4) so that the side plates (3) are spliced and connected, and the off-track sails (5) are folded and folded in the box body; or, after the rotating shaft (4) is unlocked, the memory alloy rods (6) stretch outwards to reset and drive the side plates (3) to move away from the rotating shaft (4) so as to spread the off-track sail (5);
the off-track sail (5) is formed by splicing a plurality of split sails (51); one split sail (51) is arranged between two adjacent memory alloy rods (6), the central corner part (511) of the split sail (51) is fixedly arranged in the box body, and the two corner parts (512) are respectively connected with two adjacent side plates (3);
the side plate (3) comprises:
a main body plate (31), wherein a plurality of the main body plates (31) are movably arranged between the top plate (1) and the bottom plate (2) in a surrounding manner; and
the switching block (32) is fixedly arranged on the inner side of the main body plate (31), and the switching block (32) is connected with one end of the corresponding memory alloy rod (6) and is respectively connected with the corner parts (512) of the two adjacent split sails (51);
the side plates (3) further comprise two elastic pieces (33), one ends of the two elastic pieces (33) are connected with the adapter block (32), and the other ends of the two elastic pieces are respectively connected with corner parts (512) of the two adjacent split sails (51);
the adapter block (32) is outwards convexly provided with a vertical plate (321) and two transverse plates (322), wherein two transverse plates (322) are respectively arranged on two opposite sides of the vertical plate (321), each vertical plate (321) is connected with one memory alloy rod (6) through a bolt, and the two transverse plates (322) are respectively connected with the corner parts (512) of different split sails (51);
the elastic piece (33) is a tension spring, and each transverse plate (322) is fixedly provided with one tension spring and is elastically connected with the corner part (512) of the corresponding split sail (51) through the tension spring; the split sail (51) is tensioned by the tension spring, so that the unfolded off-track sail (5) is always in a tensioning state.
2. Off-track sail device according to claim 1, characterized in that it further comprises a storage cap (7), one of said storage caps (7) being arranged between two adjacent memory alloy bars (6), said storage caps (7) having an opening towards the outside; the central corner (511) of the split sail (51) is fixedly arranged in the corresponding storage cover (7), and two corner parts (512) of the split sail extend out of the opening of the storage cover (7) respectively and are correspondingly connected with the two adjacent side plates (3).
3. Off-track sail device according to claim 1, characterized in that it further comprises a guide post (8), said guide post (8) being rotatably arranged between said top plate (1) and said bottom plate (2); the two sides of each memory alloy rod (6) perpendicular to the extending direction are provided with the guide posts (8).
4. An off-track sailing device as claimed in claim 3, characterized in that a set of said guide posts (8) is provided on both sides of each of said memory alloy rods (6) perpendicular to the direction of extension, each set having a plurality of said guide posts (8) arranged at intervals, the telescopic passage of said memory alloy rods (6) being formed between two sets of said guide posts (8).
5. The off-orbit sail device according to any one of claims 1 to 4, wherein the corner positions of the upper end face of the top plate (1) are provided with protruding blocks (12), and the protruding blocks (12) can be abutted against the outer surface of the star of the satellite so as to form an avoidance space between the upper end face of the top plate (1) and the outer surface of the star.
6. Off-track sail device according to any of claims 1 to 4, characterized in that the off-track sail (5) is a double-sided aluminized polyimide film.
7. A satellite comprising a star and the off-orbit sail device of any one of claims 1 to 6, the top plate of the off-orbit sail device being disposed on the star.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211626982.6A CN115924134B (en) | 2022-12-16 | 2022-12-16 | Off-orbit sailing device and satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211626982.6A CN115924134B (en) | 2022-12-16 | 2022-12-16 | Off-orbit sailing device and satellite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115924134A CN115924134A (en) | 2023-04-07 |
| CN115924134B true CN115924134B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211626982.6A Active CN115924134B (en) | 2022-12-16 | 2022-12-16 | Off-orbit sailing device and satellite |
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| CN (1) | CN115924134B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205770212U (en) * | 2016-05-25 | 2016-12-07 | 南京理工大学 | A kind of micro-nano satellite braking sail leaves the right or normal track device |
| CN108791965A (en) * | 2018-05-03 | 2018-11-13 | 南京理工大学 | Self-stabilization leaves the right or normal track device without torque cube star braking sail |
| CN113525724A (en) * | 2021-07-05 | 2021-10-22 | 陕西智星空间科技有限公司 | Micro-nano satellite braking sail device |
| CN113650813A (en) * | 2021-08-09 | 2021-11-16 | 南京理工大学 | Active driving type large-scale film unfolding sail device |
| CN114132528A (en) * | 2021-11-30 | 2022-03-04 | 北京卫星制造厂有限公司 | Flexible sail unfolding device |
| CN114261539A (en) * | 2021-12-22 | 2022-04-01 | 浙江时空道宇科技有限公司 | Satellite derailing device |
| CN218777702U (en) * | 2022-12-16 | 2023-03-31 | 苏州馥昶空间技术有限公司 | Off-rail sail device |
-
2022
- 2022-12-16 CN CN202211626982.6A patent/CN115924134B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205770212U (en) * | 2016-05-25 | 2016-12-07 | 南京理工大学 | A kind of micro-nano satellite braking sail leaves the right or normal track device |
| CN108791965A (en) * | 2018-05-03 | 2018-11-13 | 南京理工大学 | Self-stabilization leaves the right or normal track device without torque cube star braking sail |
| CN113525724A (en) * | 2021-07-05 | 2021-10-22 | 陕西智星空间科技有限公司 | Micro-nano satellite braking sail device |
| CN113650813A (en) * | 2021-08-09 | 2021-11-16 | 南京理工大学 | Active driving type large-scale film unfolding sail device |
| CN114132528A (en) * | 2021-11-30 | 2022-03-04 | 北京卫星制造厂有限公司 | Flexible sail unfolding device |
| CN114261539A (en) * | 2021-12-22 | 2022-04-01 | 浙江时空道宇科技有限公司 | Satellite derailing device |
| CN218777702U (en) * | 2022-12-16 | 2023-03-31 | 苏州馥昶空间技术有限公司 | Off-rail sail device |
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| Publication number | Publication date |
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| CN115924134A (en) | 2023-04-07 |
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