Two-degree-of-freedom spatial microgravity environment simulation experiment platform
By designing air suspension and guide rail components, a low-cost and highly versatile microgravity simulation experimental platform was realized, solving the problem of realistic simulation of the release and recovery motion of tethered satellite systems and reducing the risks of spin and attitude angle changes.
Patent Information
- Application Number
- CN202410976434.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-20
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2044-07-20
AI Technical Summary
Existing microgravity simulation experimental platforms are expensive, have limited experimental time, and are difficult to simulate the release and retrieval motion of tethered satellite systems in a realistic and effective manner, and are subject to risks of spin and attitude angle changes.
Employing air suspension components, guide rail components, damping vibration isolation platforms, and air source components, microgravity simulation is achieved by forming an air film using high-pressure gas. The air suspension slider slides on the guide rail, and the mounting plates of the satellite and the mother satellite can rotate, realizing two degrees of freedom motion to simulate the release and recovery process of a tethered satellite.
It achieves low-cost, highly versatile, and unrestricted microgravity simulation, which can realistically simulate the release and recovery motion of tethered satellites and reduce the risks of spin and attitude angle changes.
Smart Images
Figure CN118992139B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of space microgravity environment simulation experiment platform, in particular to a two-degree-of-freedom space microgravity environment simulation experiment platform. BACKGROUND
[0002] In-orbit experiment can provide real microgravity environment for tethered satellite system, but it is high in cost and limited in experimental opportunity. In order to reduce the experimental cost and risk, it is necessary to simulate space microgravity environment on the ground and carry out experimental test on tethered satellite system.
[0003] The methods for realizing microgravity environment mainly include free fall method, water floating method and air floating method. The free fall method has the disadvantage of high test cost and limited experimental time and space. The water floating method has the disadvantage of high sealing requirement for experimental object and large fluid resistance during movement. The air floating method realizes microgravity environment simulation by air floating force to offset the gravity of experimental object, has long experimental time and does not generate additional resistance to the movement of experimental object, and is therefore most commonly used. The existing microgravity simulation experiment platform usually sprays high-pressure gas from the air foot to the marble platform to form an air film to offset the gravity. However, this method requires the experimental object to carry a high-pressure gas bottle or a high-pressure gas pipe, which limits the experimental time. In addition, the additional mass and additional damping caused by the high-pressure gas bottle or high-pressure gas pipe make it difficult to truly and effectively simulate the release and recovery movement process of the tethered satellite system. At the same time, this kind of experiment platform needs a large area and a very high flatness marble platform, which greatly increases the cost.
[0004] At the same time, it is necessary to ensure that the release separation force is accurately applied to the mass center of the parent satellite and the child satellite during the release process, otherwise the spin may be generated, which reduces the release efficiency and increases the risk of the child satellite or the parent satellite winding the tether during release. In addition, the tethered satellite system may change the satellite attitude angle during release and recovery process due to the change of working state, which may cause task failure. SUMMARY
[0005] Therefore, the purpose of the present application is to provide a two-degree-of-freedom space microgravity environment simulation experiment platform, which can be used for release and recovery experiment verification of tethered satellite system, has the characteristics of high universality, low cost and unlimited experimental time.
[0006] In order to achieve the above object, the application adopts the following technical scheme: a two-degree-of-freedom space micro-gravity environment simulation experiment platform, comprising an air suspension assembly (1), a guide rail assembly (2), a damping vibration isolation platform (3) and an air source assembly (4); the air suspension assembly (1) comprises a sub-star mounting plate (12), a sub-star base (13), a mother-star mounting plate (14), a rotary table bearing (15), a mother-star base (16) and an air suspension slider (17); the guide rail assembly (2) comprises an air inlet plate (5), a sealing gasket (6), a first limiting block (7), a mother-star guide rail (8), a second limiting block (9), a gas blocking plate (10) and a sub-star guide rail (11); the air source assembly (4) comprises a first air guide hose (18), a conversion joint (19), a second air guide hose (20) and an air source (21); the guide rail assembly (2) is fixedly installed on the damping vibration isolation platform (3), and the air suspension assembly (1) is arranged directly above the guide rail assembly (2); the air source assembly (4) is connected to the air inlet plate (5) of the air suspension assembly (1) through the first air guide hose (18) and is used for conveying high-pressure gas to the mother-star guide rail (8) and the sub-star guide rail (11).
[0007] In a preferred embodiment, the upper half of the mother-star guide rail (8) and the sub-star guide rail (11) is used for exhausting and bearing; the lower half of the mother-star guide rail (8) and the sub-star guide rail (11) is used for limiting and fixing; three bearing surfaces of the mother-star guide rail (8) and the sub-star guide rail (11) are each provided with a row of exhaust holes along the length direction; after the high-pressure gas is exhausted through the exhaust holes, an air film is formed between the guide rail and the air suspension slider (17), so that the air suspension slider (17) can slide on the mother-star guide rail (8) and the sub-star guide rail (11).
[0008] In a preferred embodiment, the sub-star base (13), the mother-star base (16) and the air suspension slider (17) are fixedly connected, the mounting spacing of the air suspension slider (17) is consistent with the mounting spacing of the guide rail, and the sub-star mounting plate (12) and the mother-star mounting plate (14) are respectively rotationally connected with the sub-star base (13) and the mother-star base (16) through the rotary table bearing (15).
[0009] In a preferred embodiment, while the air suspension assembly (1) slides on the mother-star guide rail (8) and the sub-star guide rail (11), the sub-star mounting plate (12) and the mother-star mounting plate (14) rotate around the rotary table bearing (15).
[0010] In a preferred embodiment, the mother-star guide rail (8) and the sub-star guide rail (11) are each two, and the two mother-star guide rails (8) are symmetrically and parallelly installed on the inner side with respect to the two sub-star guide rails (11); the air inlet plate (5) and the gas blocking plate (10) are fixedly connected with the mother-star guide rail (8) and the sub-star guide rail (11) respectively, and the sealing gasket (6) is used for sealing.
[0011] In a preferred embodiment: the second air guide hose (20) is provided with quick connectors at both ends, one end is connected to the output of the air source (21), the other end is connected to the input of the conversion connector (19); the conversion connector (19) has two outputs, respectively connected to two first air guide hoses (18); in order to ensure the air flow of the guide rail, the flow area of the second air guide hose (20) is 1.8 to 2.2 times the flow area of the first air guide hose (18); the air source (21) adjusts the outlet pressure and outlet flow of high-pressure gas according to the load.
[0012] In a preferred embodiment: the first limiting block (7) is arranged on the side of the mother star guide rail (8) and the daughter star guide rail (11) to limit the width direction of the guide rail; the second limiting block (9) is provided with a boss for abutting against the inner bottom surface of the guide rail and limiting the height direction of the guide rail together with the damping vibration isolation platform (3), and the second limiting block (9) is arranged at both ends of the guide rail to limit the length direction of the guide rail.
[0013] Compared with the prior art, the present application has the following beneficial effects:
[0014] 1. The space microgravity environment simulation experiment platform has the characteristics of high universality, strong anti-interference ability and low cost, the carrying capacity of the present application is greater than 20 kg, the simulation tether deployment length can reach 10 m, the on-orbit release and recovery movement process of the tethered satellite can be effectively simulated, and the microgravity simulation test of the tether deployment direction is approximately frictionless.
[0015] 2. The space microgravity environment simulation experiment platform of the present application can realize suspension microgravity without the experimental object bringing gas cylinders, gas sources or gas pipes, has the advantage that the experimental duration is not limited, and can be used for ground release and recovery experiment verification of the wireless tethered satellite system.
[0016] 3. The daughter star mounting plate and the mother star mounting plate have the freedom of rotating along the height direction of the guide rail, which can be used for verifying whether the separation force produces spin movement, and verifying whether the attitude changes in the working process of the daughter and mother stars. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a general schematic view of the space microgravity environment simulation experiment platform.
[0018] Figure 2 It is a schematic view of the guide rail assembly and the air suspension assembly of the space microgravity environment simulation experiment platform.
[0019] Figure 3 It is a schematic view of the mother star air suspension unit of the space microgravity environment simulation experiment platform.
[0020] Figure 4It is a schematic view of the gas source assembly of the space microgravity environment simulation experiment platform of the application.
[0021] Figure 5 It is a second limiting block and installation schematic view of the space microgravity environment simulation experiment platform of the application.
[0022] In the figure, 1 is a gas suspension assembly, 2 is a guide rail assembly, 3 is a damping vibration isolation platform, 4 is a gas source assembly, 5 is an air inlet plate, 6 is a sealing gasket, 7 is a first limiting block, 8 is a mother star guide rail, 9 is a second limiting block, 10 is a gas blocking plate, 11 is a child star guide rail, 12 is a child star mounting plate, 13 is a child star base, 14 is a mother star mounting plate, 15 is a rotary table bearing, 16 is a mother star base, 17 is a gas suspension sliding block, 18 is a first gas guide hose, 19 is a conversion joint, 20 is a second gas guide hose, and 21 is a gas source. DETAILED DESCRIPTION
[0023] The application will be further described below in conjunction with the drawings and examples.
[0024] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0025] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application; as used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combinations thereof.
[0026] As shown in Figures 1-5 The application provides a two-degree-of-freedom space microgravity environment simulation experiment platform, which comprises a gas suspension assembly 1, a guide rail assembly 2, a damping vibration isolation platform 3 and a gas source assembly 4. The guide rail assembly 2 is fixed on the damping vibration isolation platform 3, and the gas suspension assembly 1 is arranged directly above the guide rail assembly 2. The gas source assembly 4 is connected with the air inlet plate 5 of the guide rail assembly 2 through a first gas guide hose 18, and is used for delivering high-pressure gas to the mother star guide rail 8 and the child star guide rail 11.
[0027] As shown in Figure 2 , Figure 3As shown, the guide rail assembly 2 includes an air inlet plate 5, a sealing gasket 6, a first limiting block 7, a mother star guide rail 8, a second limiting block 9, a gas blocking plate 10 and a child star guide rail 11; the mother star guide rail 8 and the child star guide rail 11 are each two, and the two mother star guide rails 8 are symmetrically and parallelly installed on the inner side about the two child star guide rails 11; the air inlet plate 5 and the gas blocking plate 10 are fixedly connected with the mother star guide rail 8 and the child star guide rail 11 respectively, and the sealing gasket 6 is used for sealing.
[0028] The first limiting block 7 is in the shape of "L", and a straight slot is opened on the bottom surface for adjusting the distance between the guide rails, and is arranged on the side surface of the mother star guide rail 8 and the child star guide rail 11 to limit the guide rails in the width direction.
[0029] As shown in Figure 5 , the second limiting block 9 is provided with a boss for abutting against the inner bottom surface of the guide rail, and the damping vibration isolation platform 3 limits the guide rail in the height direction, further, the second limiting block 9 is arranged at both ends of the guide rail to limit the guide rail in the length direction.
[0030] As shown in Figure 3 , the upper half part of the mother star guide rail 8 and the child star guide rail 11 is approximately in the shape of a hollow isosceles trapezoid structure for exhausting and bearing, and the lower half part is in the shape of a rectangle structure for limiting and fixing; three bearing surfaces of the mother star guide rail 8 and the child star guide rail 11 are each provided with a row of exhaust small holes along the length direction for exhausting high-pressure gas.
[0031] The gas suspension assembly 1 includes a child star mounting plate 12, a child star base 13, a mother star mounting plate 14, a rotary table bearing 15, a mother star base 16 and a gas suspension sliding block 17; the child star base 13, the mother star base 16 and the gas suspension sliding block 17 are fixedly connected, the mounting interval of the gas suspension sliding block 17 is consistent with the mounting interval of the guide rail, and after the high-pressure gas is exhausted through the exhaust small holes of the mother star guide rail 8 and the child star guide rail 11, a layer of gas film is formed between the guide rail and the gas suspension sliding block 17, so that the gas suspension sliding block 17 can slide on the mother star guide rail 8 and the child star guide rail 11 approximately without friction.
[0032] As shown in Figure 3 , the child star mounting plate 12 and the mother star mounting plate 14 are rotatably connected with the child star base 13 and the mother star base 16 through the rotary table bearing 15, and the child star mounting plate 12 and the mother star mounting plate 14 can also rotate around the rotary table bearing 15 while the 1 slides along the mother star guide rail 8 and the child star guide rail 11.
[0033] As shown in Figure 4As shown, the air source assembly 4 comprises first air guide hoses 18, a conversion joint 19, second air guide hoses 20 and an air source 21. The second air guide hoses 20 have quick connectors at both ends, one end of which is connected to the output port of the air source 21, and the other end is connected to the input port of the conversion joint 19. The conversion joint 19 has two output ports, which are respectively connected to two first air guide hoses 18. In order to ensure the air flow of the guide rail, the flow area of the second air guide hose 20 is about 1.8 to 2.2 times the flow area of the first air guide hose 18. The air source 21 has a stepless adjusting knob, which can adjust the outlet pressure and outlet flow of the high-pressure gas according to the load, so as to improve the adaptability and working efficiency of the experimental platform.
Claims
1. A two-degree-of-freedom microgravity environment simulation experimental platform, characterized in that, The system includes an air suspension assembly (1), a guide rail assembly (2), a damping vibration isolation platform (3), and an air source assembly (4); the air suspension assembly (1) includes a satellite mounting plate (12), a satellite base (13), a mother satellite mounting plate (14), a turntable bearing (15), a mother satellite base (16), and an air suspension slider (17); the guide rail assembly (2) includes an air inlet plate (5), a sealing gasket (6), a first limiting block (7), a mother satellite guide rail (8), a second limiting block (9), an air blocking plate (10), and a satellite guide rail. (11); The gas source assembly (4) includes a first gas guide hose (18), a conversion connector (19), a second gas guide hose (20) and a gas source (21); The guide rail assembly (2) is fixedly installed on the damping vibration isolation platform (3), and the air suspension assembly (1) is located directly above the guide rail assembly (2); The gas source assembly (4) is connected to the air inlet plate (5) of the air suspension assembly (1) through the first gas guide hose (18) for supplying high-pressure gas to the mother star guide rail (8) and the daughter star guide rail (11); The upper half of the mother star guide rail (8) and the daughter star guide rail (11) is used for venting and bearing; the lower half of the mother star guide rail (8) and the daughter star guide rail (11) is used for limiting and fixing; a row of small venting holes is opened on each of the three bearing surfaces of the mother star guide rail (8) and the daughter star guide rail (11) along their length direction; after the high pressure gas is discharged through the venting holes, a layer of gas film is formed between the guide rail and the air suspension slider (17), so that the air suspension slider (17) can slide on the mother star guide rail (8) and the daughter star guide rail (11); The sub-satellite base (13), the mother star base (16) and the air suspension slider (17) are fixedly connected. The installation spacing of the air suspension slider (17) is consistent with the installation spacing of the guide rail. The sub-satellite mounting plate (12) and the mother star mounting plate (14) are rotatably connected to the sub-satellite base (13) and the mother star base (16) respectively through the turntable bearing (15). While the air suspension assembly (1) slides on the mother star guide rail (8) and the daughter star guide rail (11), the daughter star mounting plate (12) and the mother star mounting plate (14) rotate around the turntable bearing (15).
2. The two-degree-of-freedom microgravity environment simulation experimental platform according to claim 1, characterized in that: There are two mother star guide rails (8) and two daughter star guide rails (11), and the two mother star guide rails (8) are installed symmetrically and parallel to the two daughter star guide rails (11) on the inner side; the air intake plate (5) and the air blocking plate (10) are fixedly connected to the mother star guide rail (8) and the daughter star guide rail (11) respectively, and the sealing gasket (6) is used for sealing.
3. The two-degree-of-freedom microgravity environment simulation experimental platform according to claim 1, characterized in that: The second air guide hose (20) is provided with quick-connect fittings at both ends. One end is connected to the output port of the air source (21), and the other end is connected to the input port of the conversion fitting (19). The conversion fitting (19) has two output ports, which are respectively connected to two first air guide hoses (18). In order to ensure the air intake flow of the guide rail, the flow cross-sectional area of the second air guide hose (20) is 1.8 to 2.2 times that of the flow cross-sectional area of the first air guide hose (18). The air source (21) adjusts the high-pressure gas outlet pressure and outlet flow according to the load.
4. The two-degree-of-freedom microgravity environment simulation experimental platform according to claim 1, characterized in that: The first limiting block (7) is set on the side of the mother star guide rail (8) and the daughter star guide rail (11) to limit the width of the guide rail; the second limiting block (9) is provided with a boss to abut against the inner bottom surface of the guide rail, and together with the damping vibration isolation platform (3) limits the height of the guide rail; the second limiting block (9) is set at both ends of the guide rail to limit the length of the guide rail.
Citation Information
Patent Citations
Microgravity air floatation target satellite simulator system with five degrees of freedom
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Double-super-satellite platform ground simulation equipment based on differential air flotation vertical control
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