Multi-connected mounting type long shape-preserving flying film capturing device

Abstract

The invention belongs to the technical field of active removal of space debris, and particularly relates to a multi-connected mounting type long shape-preserving flying film capturing device. Comprising a launching device and a plurality of long shape-preserving flying film mechanisms, the launching device is provided with a plurality of launching cavities for assembling the long shape-preserving flying film mechanisms, and the tail end of each launching cavity is provided with a rifling for providing an initial rotating speed for the long shape-preserving flying film mechanism; the long shape-preserving flying film mechanism comprises a flying spear and a film connected with the flying spear, the film is contained in the cavity when not launched, the flying spear rotates to drive the film to unfold after launched, unfolding stability is achieved through angular momentum, continuous unfolding of the film and the flying spear form a stable flying film capturing state, and capturing is achieved. According to the invention, the film is driven to unfold by utilizing the angular velocity of the spinning of the flying spear, the long shape preservation of the film is realized, the capturing probability of different targets is increased, and the problem that the capturing is difficult due to the diversity and complex attitude of space debris is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of active removal of space debris, and in particular relates to a multi-unit long-conformal flying film capture device. Background Art

[0002] With the frequent development of space activities in recent years, the number of space debris in the Earth's orbit has continued to increase, posing a serious threat to human space exploration and satellite communications. In order to ensure the safety of the space environment, it is urgent to strengthen the research on the space environment, master effective cleaning technology, and actively carry out space debris removal experiments.

[0003] In terms of debris removal system options, there are mainly robotic arm capture, rope net capture, inflatable structure capture, flying spears, etc.

[0004] However, the capture method using a robotic arm is a rigid connection capture method, which can only target cooperative targets and is complex and difficult to operate and control. The inflatable structure capture method has the advantage of a large capture tolerance, but has high requirements for the target's posture. The flying spear has the advantages of light weight and low cost, but it is easy to generate additional space debris. The capture tolerance of the rope net is large, but the towing body will rebound, making it difficult for the deployed rope net to maintain its shape in orbit. Therefore, the current methods for capturing space debris are faced with various defects. Summary of the invention

[0005] The purpose of the present invention is to provide a flying film capture method that can maintain its shape for a long time, utilize the angular velocity of the flying spear's spin to drive the film to unfold, and achieve long-term shape preservation of the film, increase the capture probability of different targets, and solve the problem of difficulty in capturing caused by the diversity and complex postures of space debris.

[0006] The technical solution to achieve the purpose of the present invention is: a multi-mounted long conformal flying film capture device, including a launching device and a plurality of long conformal flying film mechanisms, the launching device is provided with a plurality of launching cavities equipped with the long conformal flying film mechanisms, and the end of each launching cavity is provided with rifling for providing an initial rotation speed for the long conformal flying film mechanism;

[0007] The long-preserving flying film mechanism includes a flying spear and a film connected to the flying spear. When not launched, the film is stored in the cavity. After launching, the flying spear spins and drives the film to unfold, and the angular momentum is used to achieve the stability of the unfolding. The continuous unfolding of the film and the flying spear form a stable flying film capture state to achieve capture.

[0008] Furthermore, the launching device is a multi-tube cylindrical launcher, in which an igniter, a piston and a long conformal flying film mechanism are installed in sequence from bottom to top in each launching chamber of the launching device, and rifling occupying 1 / 3 of the total length of the launching chamber is provided from the middle of the launching chamber to the front end of the launching chamber, and the rifling cooperates with the long conformal flying film mechanism and provides it with an initial rotation speed.

[0009] Furthermore, the igniter is fixedly connected to the launching device via threads.

[0010] Furthermore, the long conformal flying film mechanism also includes a guide post and a housing;

[0011] The flying spear is a rotating rod-shaped structure with an oval tip. A cylindrical section with a diameter larger than the main body of the flying spear is provided in the middle of the flying spear. A guide column matching the rifling is provided on the side of the cylindrical section. The tail end of the flying spear is a ring cover.

[0012] The outer shell is composed of two semi-annular shells, which are interference-fitted between one end face of the middle cylindrical section of the flying spear and the annular cover. After the outer shell is assembled, the outer diameter is equal to the diameter of the middle cylindrical section. The outer shell, the flying spear body, one end face of the cylindrical section and the annular cover form an annular cavity. The film is connected to the flying spear body and is accommodated in the annular cavity.

[0013] The long conformal flying film mechanism rotates and flies out with the cooperation of the guide post and the rifling. After leaving the barrel, the outer shell is separated under the action of centrifugal force, and then the film begins to rotate and unfold around the flying spear under the action of centrifugal force. The unfolded film is circular, and the continuous unfolding of the film and the flying spear form a stable flying film capture state.

[0014] Furthermore, a flanged through hole is provided in the middle of the film, and an annular groove is provided on the main body at the rear end of the cylindrical section in the middle of the lance, and the annular groove and the flange of the film are glued together.

[0015] Furthermore, the outer edge of the front end of the cylindrical section in the middle of the flying spear is rounded.

[0016] Furthermore, the lance head has two rectangular long grooves symmetrically opened along the axial direction, each rectangular groove is equipped with a rectangular anti-rebound paddle, the two anti-rebound paddles are symmetrically installed, and after installation, they are in an arrow shape with the tail end protruding outside the lance body.

[0017] Furthermore, the anti-rebound pick is made of spring steel, and the anti-rebound pick is fixed in the rectangular groove at the tip of the flying spear by two screws.

[0018] Furthermore, the material of the film is a polyimide film, the diameter of the film is 2-5 meters, and the mass of the flying spear is greater than the mass of the film.

[0019] Furthermore, an adhesive layer is provided on one side of the film wrapping the target to adhere and capture the target; the adhesive layer is preferably a coating glue, a magnetic adsorption material, an electrostatic adsorption material or a plurality of bristles.

[0020] Compared with the prior art, the present invention has the following significant advantages:

[0021] (1) The present invention proposes a novel long-preserving flying film capture method, which can capture different space targets and is relatively insensitive to the target's motion posture, solving the problem of the difficulty in capturing unknown space debris.

[0022] (2) The present invention introduces a thin film device. The flying spear drives the thin film to unfold during its rotation, and uses angular momentum to achieve the stability of the unfolding. The continuous unfolding of the thin film and the flying spear form a stable flying film capture state, which provides higher reliability for capturing space debris. After unfolding, the thin film can form a larger capture area, which can cover a larger range of space and increase the success rate of capture.

[0023] (3) The present invention adds an anti-rebound pick to prevent the flying spear from rebounding and detaching after penetration, thereby increasing the subsequent film coating capture effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a multi-unit long-conformal flying film capture device; (a) is the appearance view, and (b) is the cross-sectional view.

[0025] Figure 2 It is a long conformal flying membrane; (a) is the appearance view, and (b) is the cross-sectional view.

[0026] Figure 3 It is a cross-sectional view of the long conformal flying membrane launcher.

[0027] Figure 4 Schematic diagram of the deployment of the long conformal flying membrane

[0028] Figure 5 The simulation expansion diagram of the long conformal flying membrane

[0029] Description of reference numerals:

[0030] 1-long conformal flying film mechanism, 2-launching device, 3-piston, 4-igniter, 101-flying spear, 102-screw, 103-anti-rebound paddle, 104-guide column, 105-housing, 106-film. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0032] The present invention discloses a method for capturing a flying film with long-term shape preservation, which mainly comprises a flying film mechanism 1 with long-term shape preservation, a launching device 2, a piston 3 and an igniter 4.

[0033] The launch device 2 is a multi-tube cylindrical launcher, and there are seven launch chambers in the launch device 2. A threaded through hole is opened at the bottom of each launch chamber for installing an igniter 4. There are rifling from the middle to the front end of the launch chamber, which occupies 1 / 3 of the total length of the launch chamber, providing an initial rotation speed for the long conformal flying film mechanism 1.

[0034] The igniter 4, the piston 3, and the long-conformal flying film mechanism 1 are installed in the launching device 2 from bottom to top;

[0035] The igniter 4 is fixedly connected to the launching device 2 via threads;

[0036] The piston 3 is placed at the bottom end of the launching device 2 to push the long conformal flying film 1 to launch;

[0037] The long-form-preserving flying film mechanism 1 includes a flying spear 101 , a screw 102 , an anti-rebound paddle 103 , a guide column 104 , a housing 105 and a film 106 .

[0038] The flying spear 101 is a rotating rod-shaped structure with an oval tip, which can enhance the penetration capability of the target. Two rectangular long grooves are symmetrically opened along the axial direction at the head of the flying spear 101, each of which has two screw holes, and two circular holes are symmetrically opened in the middle of the flying spear.

[0039] The anti-rebound paddle 103 is a rectangular thin sheet made of spring steel. The anti-rebound paddle is fixed in the rectangular groove at the tip of the spear by two screws. The two anti-rebound paddles are symmetrically installed and are in an arrow shape after installation.

[0040] One end of the guide post 104 is symmetrically placed in the circular hole in the middle of the lance, and the other end is matched with the rifling in the cavity of the launch device 1;

[0041] Two semi-annular outer shell covers are installed at the lower end of the flying spear 101 by interference fit, and form an annular cavity with the flying spear 101;

[0042] The film is housed in the annular cavity formed by the outer shell 105 and the spear 101. The film is circular in its unfolded state, and is fixedly connected to the middle of the spear by gluing. The film is made of polyimide film with a diameter of 3 meters. The mass of the spear is greater than that of the film, and it can withstand high temperatures in space without failure. An adhesion layer is provided on one side of the film that wraps the target to capture the target; the adhesion layer is preferably a coating glue, a magnetic adsorption material, an electrostatic adsorption material, or a plurality of bristles, which can adsorb the target through van der Waals force.

[0043] The multi-mounted long conformal flying film capture device can capture multiple space debris one by one.

[0044] After the igniter 4 is ignited, the gunpowder gas pushes the piston 3 to move forward, and the long-conformal flying film mechanism 1 rotates and flies out under the cooperation of the guide column 104 and the rifling. After leaving the barrel, the outer shell 105 is separated from the long-conformal flying film mechanism 1 under the action of centrifugal force, and then the film 106 begins to rotate and unfold around the flying spear 101 under the action of centrifugal force. The continuous unfolding of the film 106 and the flying spear 101 form a stable flying film capture state. After approaching the target, the tip of the flying spear 101 is embedded in the target, and the anti-rebound paddle 103 penetrates the target and then undergoes elastic deformation to recover to the unfolded state to prevent it from rebounding from the target. The film 106 covers the target under the action of inertia force. After the film covers the target, it is fixed to the target through the adhesion layer to form a combination, and the target can be de-orbited later by dragging or other methods.

Claims

1. A multi-unit long-form-keeping flying film capture device, characterized in that: The invention comprises a launching device (2) and a plurality of long conformal flying film mechanisms (1), wherein the launching device (2) is provided with a plurality of launching cavities for assembling the long conformal flying film mechanisms (1), and the end of each launching cavity is provided with rifling for providing an initial rotation speed for the long conformal flying film mechanisms (1); The long-shape-preserving flying film mechanism (1) comprises a flying spear (101) and a film (106) connected to the flying spear (101). When not launched, the film is stored in a cavity. After launched, the flying spear spins and drives the film to unfold. The angular momentum is used to achieve the stability of the unfolding. The continuous unfolding of the film and the flying spear form a stable flying film capture state to achieve capture.

2. The multi-unit long-form-keeping flying film capture device according to claim 1 is characterized in that: The launching device (2) is a multi-tube cylindrical launcher. An igniter (4), a piston (3) and a long conformal flying film mechanism (1) are installed in each launching chamber of the launching device from bottom to top. A rifling occupying 1 / 3 of the total length of the launching chamber is provided from the middle of the launching chamber to the front end of the launching chamber. The rifling cooperates with the long conformal flying film mechanism (1) and provides an initial rotation speed for it.

3. The multi-unit long-form-keeping flying film capture device according to claim 2 is characterized in that: The igniter (4) is fixedly connected to the launching device (2) via a thread.

4. The multi-unit long-form-keeping flying film capture device according to claim 1 is characterized in that: The long shape-preserving flying film mechanism (1) further comprises a guide column (104) and a housing (105); The lance (101) is a rotating rod-shaped structure, the tip of which is an oval structure. A cylindrical section with a diameter larger than the main body of the lance is provided in the middle of the lance (101), a guide column (104) matching the rifling is provided on the side of the cylindrical section, and the tail end of the lance is an annular cover. The outer shell (105) is composed of two semi-annular shells, which are interference-fitted between one end face of the middle cylindrical section of the lance and the annular cover. After the outer shell is assembled, the outer diameter is equal to the diameter of the middle cylindrical section. The outer shell, the lance body, one end face of the cylindrical section and the annular cover form an annular cavity. The film (106) is connected to the lance body and is accommodated in the annular cavity. The long shape-preserving flying film mechanism (1) rotates and flies out under the cooperation of the guide column (104) and the rifling. After leaving the barrel, the outer shell (105) is separated under the action of centrifugal force, and then the film (106) begins to rotate and unfold around the flying spear (101) under the action of centrifugal force. The unfolded film (106) is circular, and the continuous unfolding of the film (106) and the flying spear (101) form a stable flying film capture state.

5. The multi-unit long-form-keeping flying film capturing device according to claim 4 is characterized in that: A flanged through hole is provided in the middle of the film (106), and an annular groove is provided on the main body at the rear end of the cylindrical section in the middle of the lance (101), and the annular groove and the flanged edge of the film (106) are glued together.

6. The multi-unit long-shape flying film capture device according to claim 5 is characterized in that: The outer edge of the front end of the cylindrical section in the middle of the flying spear is rounded.

7. The multi-unit long-form-keeping flying film capturing device according to claim 4 is characterized in that: The head of the flying spear (101) is symmetrically provided with two rectangular long grooves along the axial direction, and a rectangular anti-rebound paddle (103) is arranged in each rectangular groove. The two anti-rebound paddles (103) are symmetrically installed and are in an arrow shape with the tail end protruding outside the flying spear body after installation.

8. The multi-unit long-shape flying film capture device according to claim 7 is characterized in that: The anti-rebound plectrum (103) is made of spring steel and is fixed in the rectangular groove of the tip of the flying spear by two screws.

9. The multi-unit long-form-keeping flying film capturing device according to claim 1, characterized in that: The material of the film (106) is a polyimide film, the diameter of the film (106) is 2-5 meters, and the mass of the flying spear (101) is greater than the mass of the film.

10. The multi-unit long-shape flying film capture device according to claim 1, characterized in that: An adhesive layer is arranged on one side of the film (106) wrapping the target to adhere and capture the target; the adhesive layer is preferably a coating glue, a magnetic adsorption material, an electrostatic adsorption material or a plurality of bristles.

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