CN114476130A - Resistance mechanics enhancing accessory for space flexible unfolding structure - Google Patents
Resistance mechanics enhancing accessory for space flexible unfolding structure Download PDFInfo
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- CN114476130A CN114476130A CN202210120686.2A CN202210120686A CN114476130A CN 114476130 A CN114476130 A CN 114476130A CN 202210120686 A CN202210120686 A CN 202210120686A CN 114476130 A CN114476130 A CN 114476130A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/222—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles for deploying structures between a stowed and deployed state
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/10—Artificial satellites; Systems of such satellites; Interplanetary vehicles
- B64G1/1007—Communications satellites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Insulation (AREA)
Abstract
The embodiment of the application discloses a resistance science reinforcing accessory of flexible expansion structure in space, includes: the buffer layer, the surface coating layer and the external adhesion layer; the surface coating layer wraps the outer surface of the buffer layer; the outer adhesion layer is attached to the surface of the contact end of the surface coating layer and the inner wall of the release device or the multi-layer heat insulation assembly. The method effectively avoids the interference of the traditional buffer filler mode on the internal thermal boundary of the release device, reduces the thermal design difficulty, and saves more weight resources than the method of filling the buffer filler on the periphery; the contact between the buffer layer material and the flexible unfolding structure is prevented, and the side effects of generating excess, separating out pollutants, adhering the surface and the like to influence the release and unfolding of the flexible unfolding structure are effectively avoided; the wedge-shaped mechanism and the surface coating layer are designed in a lubrication guide rail way, so that the dynamic friction force in the release process is effectively reduced, and the interference generated in the release process is avoided; and the method can be realized by adopting common mature materials for spaceflight, so that the economic cost of research and development, purchase and the like is effectively saved.
Description
Technical Field
The application relates to the technical field of flexible structure development, in particular to a force mechanics enhancing accessory for a space flexible unfolding structure.
Background
The flexible material and the expansion structure thereof are widely applied in space, the nose ancestors of communication satellites, namely American echo I satellite and echo II satellite, are flexible film balloon satellites, practice II and atmosphere I launched by China are also scientific experiment balloon satellites, and along with the development of aerospace technology, the application of the flexible expansion structure has been expanded to technical levels including space return landing, space solar wing expansion, space aircraft derailment, space debris detection and the like in recent years.
Due to the limitation of the size and space of the bearing platform, the space flexible unfolding structure is generally stored in the bearing platform releasing device in a folding and pressing mode before being released and unfolded in the track, and is subjected to the mechanical load transmitted by the bearing platform in the launching and ascending section. Because the surface skin of the flexible unfolding structure is generally a flexible high-molecular film and is fragile relative to the material of the metal structure of the inner wall of the releasing device or the multi-layer heat insulation assembly, the skin is easily abraded or even penetrated through due to high-frequency friction of the inner wall of the releasing device or the multi-layer heat insulation assembly in the vibration process, so that the unfolding performance of the flexible structure is reduced or even the flexible unfolding structure cannot be protected, and therefore, a resistance chemical enhancement measure needs to be adopted to protect the flexible unfolding structure. Typical protective measures include the addition of a foamed filling between the inner wall of the delivery device and the flexible deployment structure to provide cushioning, but the following problems exist:
the foaming filler is a foaming non-metallic material, and needs to meet the strict low volatile escape rate requirement of the spacecraft, and also needs to ensure that the internal gas is reliably released so as to avoid the material swelling under vacuum from influencing the normal release and deployment of the flexible deployment structure, and the foaming filler has high manufacturing process requirement, few optional materials and high price; the tearing resistance of the foaming filler is poor, and debris is easily generated due to mutual friction with the flexible unfolding structure in the vibration process, so that redundant materials are introduced into the bearing platform and even the outer layer space; the foaming filler can also change the internal thermal control performance of the releasing device, the radiation and absorption characteristics of the surface of the inner surface of the releasing device can be obviously influenced by the existence of the foaming filler, the internal thermal boundary of the releasing device is changed, and therefore the internal thermal control performance of the releasing device is changed.
Disclosure of Invention
The invention aims to provide a mechanical resistance enhancing accessory of a space flexible unfolding structure, which provides reliable mechanical resistance protection measures for the flexible unfolding structure and ensures the safety of the flexible unfolding structure at a carrying ascending section; meanwhile, the problems of aerospace applicability and economy of mechanical protection measures can be solved, the problems of generation of excess materials and pollutants and adhesion in the vibration process are avoided, the situation that due to the introduction of the mechanical protection measures, the internal thermal boundary and the thermal control performance of the release device are changed is avoided, and the difficulty in thermal design of the release device is reduced.
In order to achieve at least one of the above purposes, the following technical scheme is adopted in the application:
the application provides a resistance mechanics enhancement annex of flexible structure that expandes in space, includes:
the buffer layer, the surface coating layer and the external adhesion layer;
the surface coating layer wraps the outer surface of the buffer layer;
the outer adhesion layer is attached to the surface of the contact end of the surface coating layer and the inner wall of the release device or the multi-layer heat insulation assembly.
In a specific embodiment, the method further comprises the following steps:
the inner attachment layer is used for attaching the surface coating layer to the outer surface of the buffer layer;
the inner adhesion layer is wrapped between the buffer layer and the surface coating layer.
In a particular embodiment, at least the side of the buffer layer facing the flexible stent is made of at least one material with elastic buffer properties.
In a specific embodiment, at least one side of the buffer layer facing the flexible unfolding structure is:
any one material of soft silicone rubber, soft fluorosilicone, foamed silicone rubber and foamed fluorosilicone or a combination thereof.
In a particular embodiment, the thickness of the buffer layer is at least such as to enable contact isolation between the flexible deployment structure and the inner wall of the release device or the multi-layer insulation assembly.
In one embodiment, the surface coating layer is composed of a polymer film;
and one surface of the polymer film facing the flexible unfolding structure is made of a skin material on the surface of the flexible unfolding structure or a polymer film material with a smooth surface or a lubricating effect.
In one embodiment, the polymer film is a PTFE, PVDF, or FEP material.
In one particular embodiment of the present invention,
the surface coating layer is provided with a gas release channel for releasing internal residual gas in the track when the resistance mechanics enhancing accessory of the space flexible unfolding structure is processed and manufactured;
the gas release channel is formed by drilling micro-holes on the surface coating layer or adopting a waterproof and breathable material as the surface coating layer.
In one embodiment, the outer and inner attachment layers are of a material having strong attachment properties, comprising:
pressure-sensitive adhesive tape for spaceflight, sizing material for spaceflight or nylon hasp.
In a particular embodiment, the buffer layer is a trapezoidal body;
the surface coating layer wraps the outer surface of the buffer layer;
wherein, the length of the surface coating layer is greater than that of the buffer layer, and sealing sections are formed at two ends of the buffer layer.
The beneficial effect of this application is as follows:
aiming at the problems in the prior art, the application provides a resistance mechanics enhancing accessory for a space flexible unfolding structure, and through the buffering and isolating contact action of the accessory, effective resistance mechanics protection is provided for the flexible unfolding structure in a folding state at a rocket launching ascending section, so that the flexible unfolding structure is prevented from being damaged by high-frequency vibration contact friction; in addition, the omnibearing protection of the flexible unfolding structure can be realized only by respectively attaching two spatial flexible unfolding structure resistance mechanics enhancing accessories provided by the application to the surfaces of four inner side wall surfaces or inner wall multilayer heat insulation assemblies of the release device at certain intervals, and compared with the traditional buffer filling measure, the weight expense is greatly reduced; on the other hand, the thermal design complexity and the design difficulty of the release device are reduced, only two space flexible unfolding structure mechanics-resisting reinforcing accessories are attached to the surface of each wall surface or inner wall multi-layer heat insulation assembly of the release device, and the cross sectional area of the release device is much smaller than that of the inner wall surface of the release device, so that the influence on the heat conduction and heat radiation characteristics of the inner surface of the release device can be almost ignored, the thermal boundary of the release device is almost not influenced, and compared with the traditional buffer filling measure, the thermal design complexity and the design difficulty are obviously reduced; the dynamic friction force borne by the flexible unfolding structure in the releasing process is reduced, the dynamic friction force is related to the contact area and the contact surface friction coefficient, and the surface contact area of the force-resistance-chemistry-enhanced accessory of the space flexible unfolding structure is small, and the surface coating layer is smooth or even made of a lubricating material, so that the effect similar to a sliding rail can be achieved, and the dynamic friction force borne by the flexible unfolding structure in the releasing process is reduced; in addition, the economy of the application is good, and common aerospace materials are selected, so that the research and development and purchase cost of the materials is effectively saved; and the design of the surface coating layer prevents the buffer layer material from contacting with the flexible unfolding structure, and the problems of generating excess, separating out pollutants, adhering the surface and the like which influence the safety of the flexible structure in releasing and unfolding are solved in the using process.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic view of a spatially flexible unfolding structure resisting a mechanical reinforcement attachment in an embodiment of the present application.
Fig. 2 shows a schematic view of an application scenario of a spatially flexible unfolding structure force-resistance mechanics enhancing attachment in an embodiment of the present application.
Fig. 3 shows a schematic view of the structural form of the buffer layer of a spatially flexible unfolding structure resistance mechanics enhancing attachment in an embodiment of the present application.
Fig. 4 shows a dimensional schematic of a spatially flexible unfolding structure resistive mechanics enhancing attachment in one embodiment of the present application.
Fig. 5 shows a schematic view of a surface clad wrapped buffer layer of a spatially flexible unfolded structure resistance to mechanical enhancement accessory in an embodiment of the present application.
Fig. 6 shows a schematic view of the structural form of the surface coating layer wrapping the buffer layer of a spatially flexible unfolding structure resistance mechanics enhancing attachment according to an embodiment of the present application.
Fig. 7 shows a schematic representation of a surface clad-wrapped breaker overclad for a spatially flexible unfolded structure resistance to mechanical enhancement attachment in an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is further noted that, in the description of the present application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
To solve the problems in the prior art, an embodiment of the present application provides a force-resisting mechanics-enhancing attachment for a space flexible unfolding structure, which is applied to the fields including spacecraft development, test application or flexible structure development, and the force-resisting mechanics-enhancing attachment for a space flexible unfolding structure is shown in fig. 1 and includes:
a buffer layer 11, a surface coating layer 12 and an outer adhesion layer 13;
the surface coating layer 12 is wrapped on the outer surface of the buffer layer 11;
the outer adhesive layer 13 is attached to the surface of the surface coating layer at the contact end with the inner wall of the release device or the multi-layer thermal insulation assembly 3.
In a specific embodiment, the method further comprises the following steps:
an inner adhesion layer 14 for attaching the surface coating layer 12 to the outer surface of the buffer layer 11;
the inner adhesion layer 14 is wrapped between the buffer layer 11 and the surface coating layer 12;
in a particular embodiment, the inner adhesive layer may not be included when the outer adhesive layer is sufficient to ensure that the surface covering layer securely closes the buffer layer.
In one embodiment, as shown in fig. 2, the spatially flexible deployment structure resistive mechanics enhancing attachment 1 is attached to the inner wall of the release device or the inner surface of the multi-layer insulation assembly 3 for providing protection to the flexible deployment structure 2, providing a cushioning effect between the inner wall of the release device or the multi-layer insulation assembly and the flexible deployment structure, protecting the flexible deployment structure.
The buffer layer material needs to have certain elastic buffer performance and is used for providing a vibration buffer effect of a launching ascending section of the flexible unfolding structure, and also needs to adapt to space thermal, vacuum and radiation environments so as to ensure that the resistance mechanics enhancing accessory does not have side effects on the unfolding of the flexible unfolding structure, such as obvious distortion, bulge and the like;
in a particular embodiment, the whole or at least the side facing the flexible stent 2 of the cushioning layer 11 is made of one or more materials having elastic cushioning properties;
preferably, the material is: any one material or a combination of materials of soft silicone rubber, soft fluorosilicone, foamed silicone rubber and foamed fluorosilicone, in other specific embodiments, the material may also be one or more other materials with elastic buffering performance, and the buffer layer 11 is a base material of the anti-mechanics enhancement accessory and can play a role of elastic buffering in a vibration process;
in a particular embodiment, the thickness of the buffer layer 11 is such as to ensure the possibility of creating a contact separation between the flexible spreading structure 2 and the inner wall of the release device or the multilayer insulating assembly 3 or other projections, in the case of a direct contact of the flexible spreading structure 2 with the resistant mechanical reinforcement accessory 1.
Preferably, the buffer layer 11 is a trapezoidal body, as shown in fig. 3, the trapezoidal body includes a rectangular parallelepiped structure portion 111 and a wedge structure portion 112;
preferably, one end of the wedge-shaped structure 112 faces away from the releasing direction of the flexible unfolding structure, as shown in fig. 3, and one end of the inclined surface of the wedge-shaped structure 112 faces towards one side of the flexible unfolding structure, and by means of the design of the wedge-shaped structure, interference generated in the process of taking the flexible unfolding structure out of the barrel can be avoided;
in a specific embodiment, as shown in fig. 4, the width w of the anti-mechanical reinforcement attachment is not less than the thickness h of the cushioning layer 11, so as to ensure the adhesion strength during vibration, and on the basis of this, the width w of the anti-mechanical reinforcement attachment is selected according to the weight resource limitation;
the length l of the anti-mechanical enhancement accessory is not less than the folding and pressing length of the flexible unfolding structure 2, so that the contact between the flexible unfolding structure 2 and the inner wall of the releasing device or the multilayer heat insulation assembly 3 can be effectively prevented in the vibration process;
in a specific embodiment, the buffer layer 11 may also be a sheet structure, when the buffer layer 11 is designed as a strip structure as shown in fig. 3, the weight resource can be effectively saved, and when the weight resource is sufficient, the buffer layer 11 may be designed as a sheet structure.
The surface coating layer 12 is wrapped on the outer surface of the buffer layer 11, as shown in fig. 5, and is used for forming physical isolation between the buffer layer 11 and the flexible unfolding structure 2, so that contact between buffer layer volatiles or aging degradation precipitates and the flexible unfolding structure can be effectively prevented, and pollution or adhesion risk is avoided;
the material of the surface coating layer has a lubricating effect, has good air permeability and can adapt to space thermal, vacuum and radiation environments, and the influence of atomic oxygen on a resistance-chemistry-enhanced accessory directly exposed in a track space can be reduced;
in one embodiment, the surface coating layer is composed of a polymer film;
one surface of the polymer film facing the flexible unfolding structure is made of a skin material on the surface of the flexible unfolding structure or a polymer film material with a smooth surface or a lubricating effect, such as a fluorine-containing polymer material like PTFE, PVDF, FEP, or other common space film materials;
in a specific embodiment, the surface coating layer is provided with a gas release channel for releasing internal residual gas generated during processing and manufacturing of the resistance chemistry reinforced accessory on the rail so as to ensure that the resistance chemistry reinforced accessory does not swell and the like after being put into the rail;
as shown in fig. 6, the gas release channel is formed by drilling micro-holes 123 on the side surface of the surface coating layer or by using a waterproof and breathable material as the surface coating layer, and the distance between the micro-holes 123 is flexibly set according to the length of the resistance mechanics enhancing accessory;
in a specific embodiment, as shown in fig. 6, the length of the surface coating layer 12 is greater than that of the cushioning layer 11, sealing sections are formed at two ends of the cushioning layer, and include a wedge-shaped end sealing section 121 and a non-wedge-shaped end sealing section 122, sealing by using the sealing sections can prevent volatile matters from being separated out along two end faces of the cushioning layer, and the length of the sealing sections is flexibly set according to the thickness of the cushioning layer and the bonding strength requirement at the sealing part;
in one embodiment, the position of the edge of the surface coating, i.e. the final closed side boundary, is prevented from facing the flexible printed structure, and the edges of the edge are prevented from scratching and abrading the flexible printed structure during vibration, and the edge 124 is disposed on the side of the mechanical strength enhancing attachment, as shown in fig. 7, or on the side facing the outer attachment layer (not shown).
In one embodiment, the outer attachment layer is used for fixing the mechanical-resistance enhancement accessory on the inner wall of the release device or the surface of the multi-layer heat-insulation component, and the inner attachment layer is used for attaching the surface coating layer on the buffer layer;
in a specific embodiment, the outer adhesion layer and the inner adhesion layer are made of materials with firm adhesion, so that the problem that the anti-mechanical enhancement accessory is firmly attached to the inner wall of the release device or the surface of the multilayer heat insulation assembly in the vibration process and the in-orbit storage process is avoided, and the anti-mechanical enhancement accessory falls off in the use process is avoided.
In a specific embodiment, when selecting the materials of each part of the anti-mechanics enhancing accessory, the spatial environment thermal boundary, the radiation dose and the vacuum environment analysis need to be carried out on a task application scene, and for a low-rail long-term on-rail application scene, the influence of atomic oxygen on the anti-mechanics enhancing accessory directly exposed in a rail space after the flexible unfolding structure is released needs to be considered.
In a specific embodiment, two anti-mechanical enhancement accessories are respectively attached to the surfaces of the multi-layer heat insulation assembly coated by the four inner wall surfaces or the inner walls of the release device at a certain interval, so that the flexible unfolding structure can be protected in all directions, the weight cost is greatly reduced, the contact surface with the inner wall of the release device or the multi-layer heat insulation assembly is small, the influence on the heat conduction and heat radiation characteristics of the inner wall of the release device or the multi-layer heat insulation assembly can be almost ignored, the thermal boundary of the release device is almost not influenced, and the complexity and the design difficulty of the internal thermal design of the release device are obviously reduced.
The following provides a specific example for illustrating the present application:
in one embodiment, the folding cross-section of the flexible unfolding structure is 160mm × 140mm, the folding height is 100mm, and the spatial environment of the application scene is analyzed before the anti-mechanics enhancing accessory material is selected, as follows:
in this embodiment, the thermal envelope analysis is first performed and the temperature to which the tribology-enhancing accessory is exposed comprises two parts: the storage temperature before the flexible unfolding structure is released is that the releasing device is in a closed state, the resistance mechanics enhancing accessory is protected by the releasing device and does not directly face the space cold and black background and the solar radiation, and the temperature range does not exceed minus 40 to plus 60 ℃; the temperature of the flexible unfolding structure after unfolding is at the moment that the releasing device is in an opening state, the resistance mechanics enhancing accessories directly face the space cold and black background and the solar radiation, and the temperature range is not more than minus 100 to plus 135 ℃;
secondly, the space radiation environment analysis, the radiation environment that the counter weight structure faces includes release device two stages before and after uncapping: before the releasing device is opened and the flexible unfolding structure is unfolded, the influence of space radiation, particularly atomic oxygen and ultraviolet radiation, on the anti-mechanics enhancement accessory is extremely small; after the releasing device is opened and the flexible unfolding structure is unfolded, the resistance mechanics enhancing accessory directly faces to radiation environments such as atomic oxygen, solar radiation and the like;
finally, high vacuum environment analysis is carried out, and the on-orbit vacuum degree can reach 10-7Pa and above, the problem of vacuum outgassing of the material needs to be considered.
In this embodiment, the buffer layer material is elastic methyl vinyl silicone rubber for aerospace, has a shore hardness of not more than 5A, and has good elastic buffer performance; the mass density is not more than 1.2g/cm3(ii) a The high-temperature and low-temperature resistant performance is excellent, and the long-term use temperature is not narrower than-120 ℃ to +200 ℃; the vacuum outgassing property is good, and the temperature is 125 ℃, and the temperature is 1.3 multiplied by 10-4Under the Pa environment, the total weight loss of the material is not more than 1% in 24h, and the escape rate of the condensable volatile matters on the collecting surface at 25 ℃ is not more than 0.5%; excellent atomic oxygen resistance and radiation resistance;
the surface coating layer material is a laminated film material with aluminum plated polyimide as a substrate and a PVDF film coated on the outer surface, the laminated film material has good high and low temperature resistance, atomic oxygen resistance and radiation resistance, and the PVDF layer coated on the surface has a good lubricating effect;
the position of the edge covering of the surface coating layer is selected at the bottom surface of the anti-mechanical enhancement accessory in contact with the outer attachment layer, so that the scraping damage of the edge covering to the flexible unfolding structure in the vibration process can be avoided;
the materials of the outer adhesion layer and the inner adhesion layer are polyimide double-sided pressure sensitive adhesive tapes PI025-ST commonly used in aerospace, and the polyimide double-sided pressure sensitive adhesive tapes have good vacuum air outlet characteristics, high and low temperature resistance and excellent bonding force;
in the embodiment, the thickness h of the buffer layer is designed to be 5mm, so that the contact between the flexible unfolding structure and the inner wall of the release device in the application task of the embodiment can be effectively prevented;
according to the design requirement that the width of the anti-mechanics enhancing accessory is not less than the thickness of the buffer layer, the width w of the anti-mechanics enhancing accessory is designed to be 10mm, and the requirements of contact area and adhesion strength can be considered at the same time;
the total length l of the anti-mechanics reinforcing accessory comprises three parts of buffer layer length, a wedge-shaped end sealing section and a non-wedge-shaped end sealing section, the total length is designed to be 100mm, and the total length is consistent with the folding height of the flexible unfolding structure; the wedge-shaped end sealing section and the non-wedge-shaped end sealing section are used for sealing two end faces of the buffer layer, so that volatile matters are prevented from being separated out along the two end faces of the buffer layer; the lengths of the wedge-shaped end and the non-wedge-shaped end sealing section are flexibly designed according to the thickness of the buffer layer and the bonding strength requirement of the sealing part, in the embodiment, the length of the wedge-shaped end sealing section is set to be 8mm, the length of the non-wedge-shaped end sealing section is set to be 20mm, and the length of the buffer layer is 72 mm;
the wedge-shaped structure of the buffer layer is set to be an inclination angle of 12 degrees, as shown in fig. 3, so that the interference between the anti-mechanical enhancement accessory and the flexible unfolding structure in the process of tube discharging can be avoided;
in the embodiment, two side surfaces of the resistance mechanics enhancing accessory are respectively provided with 5-6 micro-holes as gas release channels, and the distribution distance is about 10 mm.
The resistance mechanics enhancing accessory for the space flexible unfolding structure effectively avoids the interference of the traditional buffer filler mode on the internal thermal boundary of the release device, reduces the thermal design difficulty, and saves more weight resources than the peripheral buffer filler filling; the contact between the buffer layer material and the flexible unfolding structure is prevented, and the side effects of generating excess, separating out pollutants, adhering the surface and the like which potentially influence the release and unfolding of the flexible unfolding structure are effectively avoided; the wedge-shaped mechanism and the surface coating layer are designed in a lubrication guide rail way, so that the dynamic friction force in the release process is effectively reduced, and the interference generated in the release process is avoided; and the method can be realized by adopting common mature materials for spaceflight, so that the economic cost of research and development, purchase and the like is effectively saved.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A spatially flexible deployment structure resistive force enhancing attachment, comprising:
the buffer layer, the surface coating layer and the external adhesion layer;
the surface coating layer wraps the outer surface of the buffer layer;
the outer adhesion layer is attached to the surface of the contact end of the surface coating layer and the inner wall of the release device or the multi-layer heat insulation assembly.
2. The spatially flexible deployment structure resistive force enhancing attachment of claim 1, further comprising:
the inner attachment layer is used for attaching the surface coating layer to the outer surface of the buffer layer;
the inner adhesion layer is wrapped between the buffer layer and the surface coating layer.
3. The spatially flexible unfolding structure mechanically resisting enhancement accessory of claim 1,
at least one surface of the buffer layer facing the flexible unfolding structure is made of at least one material with elastic buffer performance.
4. The spatially flexible unfolding structure mechanically resisting enhancement accessory of claim 3,
the buffer layer is at least towards the flexible structure that expandes one side do:
any one material of soft silicone rubber, soft fluorosilicone, foamed silicone rubber and foamed fluorosilicone or a combination thereof.
5. The spatially flexible unfolding structure mechanically resisting enhancement accessory of claim 1,
the thickness of the buffer layer is at least capable of forming contact isolation between the flexible deployment structure and the inner wall of the release device or the multi-layer insulation assembly.
6. The spatially flexible unfolding structure mechanically resisting enhancement accessory of claim 1,
the surface coating layer is composed of a polymer film;
and one surface of the polymer film facing the flexible unfolding structure is made of a skin material on the surface of the flexible unfolding structure or a polymer film material with a smooth surface or a lubricating effect.
7. The spatially flexible unfolding structure mechanically resisting enhancement accessory of claim 6,
one surface of the polymer film facing the flexible unfolding structure is made of PTFE, PVDF or FEP materials.
8. The spatially flexible unfolding structure mechanically resisting enhancement accessory of claim 1,
the surface coating layer is provided with a gas release channel for releasing internal residual gas in the track when the resistance mechanics enhancing accessory of the space flexible unfolding structure is processed and manufactured;
the gas discharge channel is formed by drilling micro-holes on the surface coating layer or adopting a waterproof and breathable material as the surface coating layer.
9. The spatially flexible unfolding structure mechanically resisting enhancement accessory of claim 2,
the outer adhesion layer and the inner adhesion layer are made of materials with firm adhesion performance, and comprise:
pressure-sensitive adhesive tape for spaceflight, sizing material for spaceflight or nylon hasp.
10. The spatially flexible unfolding structure mechanically resisting enhancement accessory of claim 1,
the buffer layer is a trapezoid body;
the surface coating layer wraps the outer surface of the buffer layer;
wherein, the length of the surface coating layer is greater than that of the buffer layer, and sealing sections are formed at two ends of the buffer layer.
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| CN114476130B (en) | 2024-05-28 |
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