Foaming mechanism used in space environment

Abstract

The invention relates to a foaming mechanism used in a space environment, and belongs to the technical field of space tiny fragment removal. According to the mechanism, an organic compound (azodicarbonamide) is thermally decomposed to generate a regular bubble group, and millimeter-level space debris is removed by a non-contact resistance increasing method; the core of the device comprises a thermal foaming module (comprising a latex balloon, a 180 DEG C heating sheet and an AC foaming agent), a motion control module (a duralumin frame integrated lead screw sliding block mechanism and a T-shaped groove limiting system) and a vacuum adaptive design (a glue rubbing plate is pre-coated with a glue solution, and an electromagnet is connected with a Dupont line). Compared with a traditional mechanical arm capturing technology (such as China 'Practice No. 21') or a net capturing technology (such as the England Remote DEBRIS project), expansion bubbles can be continuously released to wrap multiple fragments, group clearing is achieved, and energy consumption is far lower than that of a laser pushing technology; the stability in an extreme environment is guaranteed through a duralumin frame and glue sealing design, the stacked drawer container supports storage of multiple balloons, adapts to platforms such as satellites and space stations, is suitable for scenes such as low earth orbit debris cleaning and orbit purification before satellite constellation deployment, fills up the technical blank of tiny debris cleaning, has high efficiency, safety and engineering feasibility, and is suitable for popularization and application. And an innovative solution is provided for space sustainable development.

Description

Technical Field

[0001] The present invention provides a foaming mechanism for space environment, which involves using the thermal decomposition of organic compounds in space to expand balloons and then produce a regular bubble group in space to achieve the purpose of removing micro space debris, belonging to the field of space micro debris removal. Background Art

[0002] Space Debris, also known as space junk, refers to all artificial failed objects and their remnants generated by human space activities in the Earth's orbit, mainly including: failed satellites, rocket upper stages, mission-related debris (such as bolts, shrouds), metal / ceramic particles generated by disintegration or collision, etc. Its size ranges from millimeter-sized paint spots to dozens of meters-sized abandoned spacecraft, orbiting the Earth at extremely high speeds (average about 7 - 8 km / s), posing a collision threat to on-orbit spacecraft. According to the data of the European Space Agency (ESA) in 2023, there are currently more than 36,000 trackable debris with a diameter of more than 10 cm, and the number of millimeter-sized debris is estimated to exceed 100 million.

[0003] With the increasing number of Earth-orbiting satellites, the number of space debris generated after satellite launch, damage, or disintegration is still rising continuously, becoming one of the important factors threatening the safety of on-orbit spacecraft. The removal of space debris has become a major issue in the current aerospace industry.

[0004] Current space debris removal technologies mainly focus on large debris ranging from centimeters to meters, such as trackable targets like failed satellites and rocket remnants. Typical solutions include robotic arm capture (e.g., China's "Aolong-1" completed an on-orbit debris simulator capture test in 2016, and Astroscale's ELSA-d mission in 2021 verified magnetic capture and metal disk locking technology), net capture and harpoon capture (the UK's RemoveDEBRIS project successfully demonstrated net capture of a CubeSat and harpoon penetration of a target panel in 2018 and 2019 respectively), and drag deorbiting devices (China's "SJ-21" satellite in 2022 towed a failed Beidou satellite out of orbit, realizing the world's first public application of the "space tugboat" technology).

[0005] To address the challenge of removing millimeter-sized microspace debris, researchers have proposed an innovative solution called the foam drag augmentation method: A spacecraft directs a special foam material at the target debris. After wrapping the debris, it significantly increases its surface area and air resistance, thereby accelerating orbital decay and causing it to burn up in the atmosphere within a few months. Compared with traditional technologies, the advantage of this method lies in its non-contact nature and potential for group removal. For example, existing robotic arm capture (such as China's "SJ-21" satellite) or net capture technologies (the UK's RemoveDEBRIS project) require precise capture of debris one by one and are only applicable to targets larger than centimeter scale; while the foam can cover multiple small debris simultaneously, especially suitable for dealing with high-density particle swarms. Compared with laser push (such as Japan's space-based laser satellite which requires high-energy focusing and is sensitive to materials) or ion beam technology (high energy consumption and short action distance), the foam drag augmentation method is more compatible with the shape and material of debris and has lower operating energy consumption. However, this technology still faces challenges such as the stability of the foam in the space environment (maintaining performance under extreme temperature and radiation) and precise spraying control (avoiding accidental damage to normal satellites), and it is currently in the laboratory verification stage.

[0006] To implement the technical solution of the foam drag augmentation method, the present invention proposes a foaming mechanism for space environment, aiming to produce a stable group of regular bubbles. Summary of the Invention

[0007] (I) Object of the Invention: The object of the present invention is to provide a foaming mechanism for space environment. The mechanism consists of a customized component, a square frame, a lead screw slider mechanism, an electromagnet, a connecting piece connecting the slider and the electromagnet, a balloon containing a heating sheet, and a container for placing the balloon. The square frame constitutes the overall structure of the mechanism, providing an installation position for each component; the lead screw slider mechanism is installed on one side of the square frame, and the slider thereof has four threaded through holes for installing the connecting piece; the electromagnet has magnetism after being energized, used to capture the head of the balloon, and there is a square through hole at the center of its suction surface for installing a wire to facilitate heating of the heating sheet inside the balloon, and there are two threaded holes at the bottom for installing on the connecting piece; the balloon is filled with an appropriate amount of organic compound and a heating sheet with a temperature that can reach 180 °C. The heating sheet extends two wires outside at the balloon nozzle, and the balloon nozzle is sealed with glue to achieve a sealing effect.

[0008] (II) Technical Solution

[0009] An inflation mechanism for space environment according to the present invention is composed of a square frame, a lead screw slider mechanism, an electromagnet, a connecting piece connecting the slider and the electromagnet, a balloon containing a heating sheet, and a container for placing the balloon; their relationships are as follows: The lead screw slider mechanism is installed on one side of the square frame; one end of the connecting piece connecting the slider and the electromagnet is connected to the slider, and the middle part is connected to the electromagnet; there is a square through hole at the center of the mating surface of the electromagnet for installing a wire, and the end is connected with a male DuPont line; the balloon is filled with an appropriate amount of organic compound and a heating sheet capable of reaching 180 °C. Two wires extend out of the balloon nozzle and are connected with a female DuPont line. A iron sheet is fixed at the end of the female head for easy adsorption by the electromagnet. The balloon nozzle is sealed with glue to achieve a sealing effect; when the slider moves to the right extreme position, the male DuPont line in the electromagnet cooperates with the female DuPont line extending out of the balloon. The electromagnet is energized to adsorb the iron sheet at the end of the female head. At this time, the balloon moves with the slider; there is a "T" - shaped groove on one side of the square frame. The balloon is initially placed outside the frame and can pass through the horizontal groove under the attraction of the electromagnet and enter the inside from the outside of the frame before inflation; the size of the container for placing the balloon is slightly larger than the initial size of the balloon, similar to a "drawer". There are several such containers stacked within the range of a cuboid formed by four slender rods and two thin plates;

[0010] The square frame is composed of five parts: a lead screw slider platform fixing plate, a balloon limiting plate, a connecting piece limiting plate, a connecting plate, and a glue - rubbing plate. Their relationships are as follows: The lead screw slider platform fixing plate and the connecting piece limiting plate are placed face - to - face. There are a lead screw slider mechanism and a connecting piece connecting the slider and the electromagnet between them. They are connected by two smaller connecting plates on the same side, and on the other side, they are connected by the balloon limiting plate to form a square frame; the glue - rubbing plate is fixed on the outside of the balloon limiting plate;

[0011] The shape and structure of the lead screw slider platform fixing plate are: a rectangular thin plate with two through holes at both ends in the length direction for easy connection with other plates; there are four through holes symmetrically distributed in the middle for installing the lead screw slider platform;

[0012] The shape and structure of the balloon limiting plate are: a rectangular thin plate with "L" - shaped bends at both ends in the length direction. There are two through holes at both bent places for connection with other plates; there is a "T" - shaped through - groove at the middle - biased part of the plate for limiting the female DuPont line extending out of the balloon and the iron sheet; a total of 10 through holes are distributed around the "T" - shaped through - groove for installing two glue - rubbing plates;

[0013] The shape and structure of the glue - rubbing plate are as follows: it is a "U" - shaped plate, with 5 through - holes distributed on the periphery of the plate for installation on the balloon limiting plate; on the side that fits the limiting plate, there are obvious grooves, and there is a through - hole at one place of the groove, through which glue can be infused into the groove; the contact part between the "U" - shaped plate and the "T" - shaped groove is connected to the groove, enabling the glue to fill the "T" - shaped groove, and then the balloons passing through the "T" - shaped groove can be rubbed with glue;

[0014] The shape and structure of the connecting - piece limiting plate are as follows: it is a rectangular thin plate, with two through - holes at both ends in the length direction, facilitating connection with other plates; along the length direction, three adjacent through - grooves are opened on one side. The upper and lower through - grooves are used to limit the movement of the connecting piece of the connecting slider and the electromagnet in the width direction, and the middle through - groove is used for weight reduction and observing the internal situation of the frame;

[0015] The shape and structure of the connecting plate are as follows: it is a rectangular thin plate, with "L" structures bent at both ends in the length direction, and there is 1 through - hole at each of the two bent places for connecting with other plates; there are two connecting plates in total, and the width is significantly smaller than that of the other three thin plates;

[0016] All components of the square frame are made of hard - aluminum;

[0017] The described screw - rod slider mechanism is an existing product part, composed of a screw - rod slider platform and a slider, and its shape requirement is a cuboid structure.

[0018] The shape and structure of the screw - rod slider platform are as follows: it is a rectangular thick plate, with four through - holes evenly distributed for installation on the screw - rod slider platform fixing plate; at one end along the length direction, there is a motor, and the motor extends a screw - rod, and at the other end, there is a thin plate for fixing the screw - rod;

[0019] The shape and structure of the slider are as follows: it is a cuboid, with four threaded through - holes on the largest - area surface for connecting the required connecting pieces; there is a threaded through - hole on the side, which cooperates with the screw - rod to form a screw - rod slider mechanism, and the slider can move along the direction of the screw - rod;

[0020] In the screw - rod slider mechanism, both the screw - rod slider platform and the slider are made of plastic products, and the screw - rod and the motor are made of metal products.

[0021] The connecting piece connecting the slider and the electromagnet is a component for connecting the slider and the electromagnet. Its shape and structure are as follows: it is an "I" - shaped thin plate, with four through - holes at both ends. One end is connected to the slider, and the through - holes at the other end are connected to the through - grooves of the connecting - piece limiting plate; there are two circular through - holes in the middle part for connecting the electromagnet, and there is also a square through - hole to facilitate the passage of wires; its material is hard - aluminum;

[0022] The electromagnet is a customized product with the following shape and structure: a cuboid with a square through-hole on the suction surface that can accommodate two male DuPont wires; there are two threaded holes on the opposite side of the suction surface for connecting with connectors; wires are led out from the side for controlling the electromagnet.

[0023] The balloon containing the heating sheet is a latex balloon filled with an appropriate amount of organic compound - azodicarbonamide, also known as AC blowing agent, which can decompose when heated to produce gas; two wires extend out from the balloon nozzle of the heating sheet and are connected with female DuPont wires; a rectangular iron sheet is fixed at the end of the female head for easy adsorption by the electromagnet, and the initial position is inside the "T"-shaped through-channel of the balloon limiting plate; the balloon nozzle is sealed with glue to achieve a sealing effect; the balloon can pass through the "T"-shaped through-channel of the balloon limiting plate.

[0024] The shape and structure of the container for placing the balloon is: a flat rectangular lidless box; the internal space is slightly larger than the balloon; several containers are stacked within the range of a cuboid formed by four slender rods and two thin plates, and this cuboid structure is the balloon box support frame.

[0025] (III) Advantages

[0026] The advantages of a foaming mechanism for use in a space environment in the present invention are as follows:

[0027] ① A new foaming mechanism that can be used in a space environment is proposed in the present invention.

[0028] ② The foaming mechanism that can be used in a space environment proposed in the present invention stores multiple groups of balloons through a stacked container,

[0029] Combined with the coordinated control of the lead screw slider and the electromagnet, it can continuously release expanding bubbles to form a regular bubble group, covering a large number of small debris in a single mission, and can significantly improve the cleaning efficiency.

[0030] ③ The foaming mechanism that can be used in a space environment proposed in the present invention adopts a hard aluminum frame and a glue-sealing design to ensure structural stability and airtightness; the lead screw slider and the "T"-shaped groove limiting system precisely control the balloon path to avoid movement deviation under vacuum weightlessness and ensure reliable operation under extreme temperatures and radiation.

[0031] ④ The foaming mechanism that can be used in a space environment proposed in the present invention utilizes the heat decomposition characteristics of AC blowing agent (azodicarbonamide), and only a 180°C heating sheet is required to generate gas and expand, with energy consumption much lower than that of laser or ion beam technology; the foam wrapping method is compatible with various material debris such as metals and ceramics, breaking through the dependence of laser technology on the target reflectivity.

[0032] ⑤The foaming mechanism proposed in the present invention can be used in the space environment and is applicable to scenarios such as cleaning debris-dense areas in low Earth orbit (LEO), purifying orbits before satellite constellation deployment, and constructing a protection barrier for the space station, thereby promoting sustainable space development. Description of the Drawings

[0033] Figure 1 It is a square frame diagram required by the present invention.

[0034] Figure 2 It is an assembly diagram of the lead screw slider mechanism, part of the square frame, and connectors required by the present invention.

[0035] Figure 3 It is an assembly diagram of the connector and the electromagnet part in the present invention.

[0036] Figure 4 It is a schematic diagram of the balloon model required by the present invention.

[0037] Figure 5 It is an assembly diagram of the balloon limit plate, balloon, and glue rubbing plate in the present invention.

[0038] Figure 6 It is a schematic diagram of the stacked balloon container required by the present invention.

[0039] Figure 7 It is a schematic diagram of the overall structure in the initial state of the present invention.

[0040] Figure 8 It is a detailed structural schematic diagram of the glue rubbing plate in the present invention.

[0041] Figure 9 It is a schematic diagram at the end of one cycle of the mechanism in the present invention.

[0042] Figure 10 It is a schematic diagram of the balloon after inflation in the present invention.

[0043] The product code descriptions in the figures are as follows:

[0044] 1a. Fixed plate of the lead screw slider platform 1b. Balloon limit plate 1c. Connector limit plate

[0045] 1d. Connecting plate 2a. Lead screw slider platform 2b. Slider

[0046] 2c. Connector connecting the slider and the electromagnet 3a. Electromagnet 3b. Male DuPont line

[0047] 4a. Schematic balloon model 4b. Female DuPont line 4c. Iron sheet

[0048] 5a. Glue rubbing plate 6a. Container for storing balloons 6b. Spring

[0049] 6c. Balloon box support frame 7. Overall structure schematic diagram 8. Detailed structure of the glue rubbing plate

[0050] 9. Schematic diagram at the end of the mechanism cycle Figure 10 . Schematic diagram of balloon inflation Specific implementation manners

[0051] The present invention will be further described in detail below with reference to the accompanying drawings.

[0052] See Figure 1 , the screw rod slider platform fixing plate 1a, the balloon limiting plate 1b, the connecting piece limiting plate 1c, and the connecting plate 1d are bolt-connected through the through holes at the edge parts of their respective structures to form the square frame shown in the figure, providing the most basic installation positions for other components. Among them, the screw rod slider platform fixing plate 1a is adjacent to the balloon limiting plate 1b; the balloon limiting plate 1b is adjacent to the connecting piece limiting plate 1c; the two connecting plates 1d connect the screw rod slider platform fixing plate 1a and the connecting piece limiting plate 1c, finally forming a square closed frame structure.

[0053] The shape and structure of the screw rod slider platform fixing plate 1a are: a rectangular thin plate with two through holes at both ends in the length direction for facilitating connection with other plates; there are four through holes symmetrically distributed at the center in the middle part for installing the screw rod slider platform. The shape and structure of the balloon limiting plate 1b are: a rectangular thin plate with "L" structures bent at both ends in the length direction, and there are two through holes at both bent places for connecting with other plates; there is a "T" - shaped through slot at the middle - biased part of the plate for limiting the female head of the DuPont line and the iron sheet for the balloon to extend; there are 10 through holes distributed around the "T" - shaped through slot for installing two glue rubbing plates. The shape and structure of the connecting piece limiting plate 1c are: a rectangular thin plate with two through holes at both ends in the length direction for facilitating connection with other plates; along the length direction, there are three adjacent through slots on one side, the upper and lower through slots are used to limit the movement of the connecting piece connecting the slider and the electromagnet in the width direction, and the middle through slot is used for weight reduction and observing the internal situation of the frame. The shape and structure of the connecting plate 1d are: a rectangular thin plate with "L" structures bent at both ends in the length direction, and there is 1 through hole at both bent places for connecting with other plates; there are two connecting plates, and the width is significantly smaller than the other three thin plates. The materials of the components of the square frame are all hard aluminum.

[0054] See Figure 2 、 Figure 3 、 Figure 7, the screw rod slider platform 2a is fixedly connected to the screw rod slider platform fixing plate 1a through bolt connections of four through holes at the bottom with four through holes of the screw rod slider platform fixing plate 1a; the slider 2b is engaged with the screw rod on the screw rod slider platform 2a; one end of the connecting member 2c connecting the slider and the electromagnet is connected to the threaded through hole on the slider 2b by screws, and the four through holes at the other end are connected to the through slot of the connecting member limiting plate 1c. There are two circular through holes in the middle part, which are connected to the two threaded holes at the bottom of the electromagnet 3a by screws, and there is also a square through hole for the wire to pass through; the wires of the two DuPont line male connectors 3c are led out from the through slot of the electromagnet 3a and connected to a controllable power supply. Whenever the slider runs to the leftmost side, the power supply is turned on to supply power to the heating sheet connected to the DuPont line male connector at this time for heating.

[0055] The described screw rod slider mechanism is an existing product part, composed of the screw rod slider platform 2a and the slider 2b, and its shape requirement is a cuboid structure. The shape and structure of the screw rod slider platform 2a are: a rectangular thick plate with four through holes evenly distributed for installation on the screw rod slider platform fixing plate; there is a motor at one end along the length direction, and the motor extends a screw rod, and there is a thin plate at the other end to fix the screw rod. The shape and structure of the slider 2b are: a cuboid with four threaded through holes on the largest surface for connecting the required connecting members; there is a threaded through hole on the side, which is engaged with the screw rod to form a screw rod slider mechanism, and the slider can move along the screw rod direction. In the screw rod slider mechanism, both the screw rod slider platform 2a and the slider 2b are plastic products, and the screw rod and the motor are metal products. The connecting member 2c connecting the slider and the electromagnet is a component for connecting the slider and the electromagnet, and its shape and structure are: an "I"-shaped thin plate with four through holes at both ends. One end is connected to the slider 2b, and the through holes at the other end are connected to the through slot of the connecting member limiting plate 1c; there are two circular through holes in the middle part for connecting the electromagnet 3a, and there is also a square through hole for the wire to pass through; its material is hard aluminum.

[0056] The described electromagnet 3a is a customized product, and its shape and structure are: a cuboid with a square through hole on the suction surface that can accommodate two DuPont line male connectors 3b; there are two threaded holes on the opposite side of the suction surface for connecting with the connecting member 2c; the wire is led out from the side for controlling the electromagnet 3a;

[0057] See Figure 4 , Figure 7, inside the balloon schematic model 4a, there is a heating sheet. The heating sheet extends two wires outside the balloon nozzle and is respectively connected to two female DuPont wire connectors 4b at the head of the balloon. The head of the balloon schematic model 4a and the female DuPont wire connectors 4b are glued together with glue; the end of the female DuPont wire connectors 4b is glued to an iron sheet 4c with glue. When the electromagnet 3a is powered on, the iron sheet 4c adheres to the electromagnet 3a, and the male DuPont wire 3b cooperates with the female DuPont wire connector 4b. At this time, the slider 2b moves to the left, driving the balloon to move to the left. When the slider 2b moves to the leftmost side, the power supply is connected to supply power to the heating sheet for heating.

[0058] The balloon schematic model 4a containing the heating sheet is a latex balloon, and it is filled with an appropriate amount of organic compound - azodicarbonamide. This organic compound is also known as AC blowing agent and can decompose to produce gas when heated; the heating sheet extends two wires outside the balloon nozzle and is connected with the female DuPont wire connectors 4b; a rectangular iron sheet 4c is fixed at the end of the female connector for easy adsorption by the electromagnet, and the initial position is inside the "T" - shaped through - slot of the balloon limiting plate 1b; the balloon nozzle is sealed with glue to achieve a sealing effect; the balloon can pass through the "T" - shaped through - slot of the balloon limiting plate 1b;

[0059] See Figure 5 , two glue - applying plates 5a are bolt - connected to the balloon limiting plate 1b through 5 through - holes distributed on the periphery.

[0060] See Figure 8 , the shape and structure of the glue - applying plate 5a are as follows: a "U" - shaped plate, with 5 through - holes distributed on the periphery for installation on the balloon limiting plate 1b; there is an obvious groove on the side that fits the balloon limiting plate 1b, and there is a through - hole at one place in the groove, through which glue can be poured into the groove; the contact part between the "U" - shaped plate and the "T" - shaped groove is connected to the groove, so that the glue can fill the "T" - shaped groove, and then the balloon passing through the "T" - shaped groove can be smeared with glue.

[0061] See Figure 6 , multiple balloon - placing containers 6a are stacked and placed inside the balloon box support frame 6c in a manner similar to "drawers"; one end of a spring 6b is connected to one side inside the balloon box support frame 6c, and the other end is in contact with the top - most balloon - placing container 6a.

[0062] The shape and structure of the balloon - placing container 6a are as follows: a flat rectangular box without a lid; the internal space is slightly larger than the balloon; several containers are stacked within the range of a cuboid formed by four slender rods and two thin plates, and this cuboid structure is the balloon box support frame 6c.

[0063] See Figure 7, the right spring 6b is in a compressed state, the slider 2b moves to the rightmost position, the electromagnet 3a is energized to adsorb the iron sheet 4c, and the male DuPont line 3b is connected to the female DuPont line 4b.

[0064] See Figure 9 , Figure 10 , the right spring 6b elongates, allowing the next container 6a still containing balloons to enter the "T"-shaped through groove; the slider 2b moves to the leftmost position, the heating sheet in the balloon schematic model 4a heats up, causing the organic compound in the balloon to decompose by heating to produce gas, resulting in the balloon expanding. At this time, the electromagnet is de-energized, and the connection between the balloon schematic model 4b and the electromagnet 3a fails. Next, the slider 2b is moved slightly, and the balloon schematic model 4b disengages from the overall mechanism. Then, the slider 2b moves to the rightmost position, repeating the above process until all the balloons are completely consumed.

Claims

1. A foaming mechanism for use in a space environment, characterized in that include: A square frame, a screw slider mechanism, an electromagnet, a connecting piece connecting the slider and the electromagnet, a balloon containing a heating plate, and a stacking container module for placing the balloon. The stackable container is used to store multiple groups of inflatable balloons; the screw slider system cooperates with the electromagnet to control the release path of the balloons; the square frame includes a glue rubbing mechanism, which is used to support the slider system and allow glue to be applied to the surface of the balloons during the dragging process; the "T"-slot limit system cooperates with the screw slider system to accurately control the release trajectory of the balloons to avoid movement deviation caused by vacuum weightlessness.

2. A space environment foaming mechanism according to claim 1, characterized in that: The stacked container adopts a multi-layer independent cabin design, which can realize the continuous release of expanded bubbles and form regular bubble groups to cover the space debris in the target area.

3. The space environment foaming mechanism according to claim 1, characterized in that: The electromagnet traction module of the screw slider mechanism uses electromagnet attraction to combine the male and female ends of the wire to achieve reliable mechanical circuit connection between the balloon and the traction module.

4. The space environment foaming mechanism according to claim 1, characterized in that: The frame includes a glue-rubbing plate, and the side thereof that fits with the limiting plate has an obvious groove, and there is a through hole in one place of the groove, through which glue can be injected into the groove; the contact point between the "U"-shaped plate and the "T"-shaped groove is connected to the groove, so that the glue can fill the "T"-shaped groove, and then the balloon passing through the "T"-shaped groove can be rubbed with glue.

5. The space environment foaming mechanism according to claim 1, characterized in that: The balloon containing the heating sheet is a latex balloon, which is filled with an appropriate amount of an organic compound, azodicarbonamide, which can generate gas to expand the balloon when heated and decomposed; the heating sheet is connected to the outside world with a DuPont wire female connector. The generated expanded bubbles can wrap metal and ceramic material fragments, and the gas generation energy consumption is lower than that of laser or ion beam cleaning technology, and is not limited by the optical reflectivity of the target object.

6. The space environment foaming mechanism according to claim 1, characterized in that: The expandable balloons produced by the agency can be used in scenarios such as cleaning up debris-dense areas in low Earth orbit (LEO), purifying orbits before deploying satellite constellations, and building protective barriers for space stations.

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