JP4549909B2 - Thermal blanket for satellite and its mounting method - Google Patents

Description

The present invention relates to a thermal blanket for an artificial satellite that reduces the amount of heat exchange between the inside of the artificial satellite and outer space, and a method for mounting the thermal blanket, and more particularly to a peeling prevention structure thereof.

  The satellite is controlled by a thermal blanket so that it does not get too cold in the shade and does not get too hot in the sun. That is, the thermal blanket is configured as a multilayer heat insulating film in which, for example, a plurality of sheets are overlapped with a polymer film deposited with metal such as aluminum on both sides and stitched together with a thread. The effect of heat conduction between the films is weakened by the gaps formed by the film, the radiant heat coupling is blocked by the reflection of each film metal deposition surface, and the heat exchange amount is further reduced by making the film multilayer. In addition, the outermost layer film exposed to the outside of the multilayer heat insulating film is usually selected from a material and thickness different from those of the other layers, such as a single-sided aluminum-deposited carbon-impregnated polyimide film, a single-sided silver-deposited polyetherimide or fluoride. A hydrogen polypropylene (FEP) film or the like is used. This prevents heat from escaping into outer space or entering from the outside, and controls the satellite so that it is not too cold in the shade and too hot in the sun.

  This thermal blanket is attached to an artificial satellite mainly using a hook-and-loop fastener (for example, berg tape) because it is required to be attached and detached during the production test phase on the ground, and further to reduce the weight. . The hook-and-loop fastener is a pair of hook-type and loop-type. For example, hook-type hook-and-loop fasteners are stitched to the mounting surface of the multilayer insulation film, and the loop-type hook-and-loop fastener is fixed to the object to be attached with an adhesive. The Then, the hook-type hook-and-loop fastener is fitted to the loop-type hook-and-loop fastener, or the hook-type hook-and-loop fastener is peeled off from the loop-type hook-and-loop fastener, and the thermal blanket is attached to or detached from the attachment object. In addition, since a load is applied to the thermal bracket due to a pressure difference between the inside and outside in a reduced pressure environment when the satellite is launched, it is necessary to mount the thermal bracket so that it is not peeled off by this load.

In a conventional thermal blanket, radial cuts are formed in a multilayer heat insulating film as a measure for preventing peeling (see, for example, Patent Document 1). That is, when the internal air expands due to a decrease in atmospheric pressure, the notch breaks due to the expansion pressure of the internal air and escapes the internal air, thereby preventing the multilayer heat insulating film from peeling off due to the expansion of the internal air. Further, when the expansion pressure of the internal air does not act, the notch is not broken by elasticity such as a multilayer heat insulating film or a polyester net, and extra heat input from the outside is prevented.
Here, the thermal blanket is attached to the attachment object by fitting of surface fasteners. Therefore, when the positional deviation between the hook-and-loop fasteners occurs, the adhesive force / attachment force is insufficient as compared with the set values, and there is a possibility that peeling occurs.
However, in the conventional thermal blanket, no consideration was given to peeling due to the positional deviation between the hook-and-loop fasteners.

  As a conventional alignment technique, an alignment technique between a probe and a bonding pad is described in Patent Document 2, for example. In this conventional alignment technique, the probe is attached to the central portion of the lower surface of the substrate facing the wafer, and two circular observation holes are opened on the diagonal lines of the substrate, two by a predetermined distance across the probe. One end of the small rod for alignment is fixed to the lower surface of the substrate so that it is outside the peephole on the diagonal line, and the other ends of the small rods that are inclined in a direction away from the diagonal line of the substrate face each other It protrudes below the peephole. On each chip of the wafer, alignment marks are formed at substantially the same height as the bonding pads at positions corresponding to the small bars. Then, after confirming the relative position of the small bar and the alignment mark from the peep hole, both were aligned, the substrate was lowered, the probe was brought into contact with the bonding pad, and the chip was inspected .

JP 2002-249099 A Japanese Patent Laid-Open No. 06-224270

  In the conventional thermal blanket, the multilayer insulation film is opaque, so when covering the outermost layer of the satellite, the surface fastener inside the multilayer insulation film cannot be visually confirmed from the outside, and alignment at the time of installation And it was difficult to inspect that the hook-and-loop fasteners after fitting were securely fitted. And the position shift of a hook_and_loop | surface fastener reduces the fitting area of a hook_and_loop | surface fastener, the shortage with respect to the setting value of the adhesive force and attachment force will generate | occur | produce, and there exists a malfunction that peeling will generate | occur | produce.

  In addition, in the conventional alignment technology, the alignment of the probe that is the contact object and the bonding pad is replaced by the alignment of the peephole provided at a position away from the contact object and the alignment mark, Four peepholes are provided for alignment of one contact object. Therefore, when this conventional alignment technique is applied, four peep holes are provided for each surface fastener, and alignment is performed at a position away from the surface fastener mounting position. However, since the thermal blanket reduces the amount of heat exchange between the spacecraft and the outer space by radiant heat insulation, provision of a peephole in an unnecessarily case will cause a deterioration in function and performance. In addition, since the multilayer insulation film is soft, the position of the hook-and-loop fastener at the time of attachment is indeterminate, so even if alignment is performed at a position away from the attachment position of the hook-and-loop fastener, the hook-and-loop fasteners are fitted without being displaced. There is no guarantee that As described above, the conventional alignment technique relates to the inspection of the IC chip, which is a technical field completely different from the present application, and it is difficult to apply the alignment technique when the thermal blanket is mounted on the artificial satellite.

This invention was made in order to solve the above-mentioned problem, facilitates high-precision alignment between hook-and-loop fasteners at the time of mounting, and allows visual confirmation of the fitting state between hook-and-loop fasteners. It is an object of the present invention to obtain a thermal blanket for an artificial satellite that can suppress the occurrence of peeling due to displacement and a method for attaching the thermal blanket.

A thermal blanket for an artificial satellite according to the present invention is attached to a predetermined position on a mounting surface of a multilayer heat insulating film and the multilayer heat insulating film , each of which is attached to an object to be attached and a plurality of alignment marks are formed. The plurality of positioning fasteners formed on the mounting object-side surface fasteners to be fitted at the mounting positions of the plurality of surface fasteners fitted to the object-side surface fasteners and the plurality of surface fasteners, respectively . so as to correspond to each of the marks, it is Bei Ete and a through-hole of the plurality for positioning which are formed through the multilayer insulation film and said surface fastener.
Also, according to the method for attaching the thermal blanket of the artificial satellite according to the present invention, the thermal blanket in which the plurality of first surface fasteners are attached to the predetermined positions on the attachment surface of the multilayer heat insulating film, and the plurality of second surface fasteners are the plurality of the first fasteners. It is a method of attaching to an attachment object attached so as to correspond to a one-surface fastener, wherein the multilayer heat insulating film and the first surface fastener are attached at each attachment position of the plurality of first surface fasteners. A plurality of alignment marks are formed so as to penetrate, and each of the plurality of second surface fasteners is formed so as to correspond to each of the through holes formed in the corresponding first surface fastener, A thermal blanket positions the first alignment fastener in the through hole so that the alignment mark is positioned in the through hole. The by fitting to the second surface fastener, in which is attached to the attachment object.

  According to this invention, since the through hole is formed so as to penetrate the multilayer heat insulating film and the first surface fastener, and the alignment mark is formed on the second surface fastener, the through hole and the alignment mark The first and second surface fasteners can be directly aligned while viewing the relative position from the through hole. Therefore, the first and second hook-and-loop fasteners can be fitted to each other while suppressing the positional shift therebetween, so that the occurrence of peeling due to the positional shift between the hook-and-loop fasteners can be suppressed.

Embodiment 1 FIG.
1A and 1B are diagrams for explaining a method for mounting a thermal blanket according to Embodiment 1 of the present invention. FIG. 1A shows the mounting state, and FIG. 1B shows the thermal blanket from the back side. FIG. 1 (c) shows an attachment target.

In FIG. 1, for example, a thermal blanket 1 is formed by stacking 5 to 30 layers of a polyester film having a thickness of 5 to 150 microns deposited with aluminum on both sides so that a polyester net is sandwiched between them and sewing them together with a thread. The multilayer heat insulation film 2 comprised and the some 1st surface fastener 3 attached to the predetermined position of the back surface (attachment surface) of the multilayer heat insulation film 2 are provided. Furthermore, the through hole 4 is formed so as to penetrate the multilayer heat insulating film 2 and the first surface fastener 3 at the center position of the first surface fastener 3. Note that the outermost layer of the multilayer heat insulating film 2 is different from the other layers in that a carbon-impregnated polyimide film vapor-deposited on one inner surface is used.
The attachment object 5 is, for example, an artificial satellite structure. And the 2nd surface fastener 6 is attached to the surface of the attachment target object 5 so as to correspond to each 1st surface fastener 3 attached to the multilayer heat insulation film 2. As shown in FIG. Further, an alignment mark 7 is formed at the center position of each second surface fastener 6.

Here, one of the first and second hook-and-loop fasteners 3 and 6 is constituted by a hook type in which only hooks are arranged, and the other is constituted by a loop type in which only loops are arranged. And the 1st and 2nd surface fasteners 3 and 6 are sewn with a thread | yarn, or were affixed with the adhesive agent, and are attached to the multilayer heat insulation film 2 or the attachment target object 5, but the attachment method is this. It is not limited to. Moreover, the 1st and 2nd surface fasteners 3 and 6 are formed in the same shape, for example, are formed in the rectangular shape of width 10mm-30mm and length 50mm-100mm.
Moreover, although the through-hole 4 is formed in the hole of diameter 3mm-7mm using a punch, for example, the dimension, a shape, and a manufacturing tool are not limited to this. Further, the alignment mark 7 is formed in a circular shape having a smaller diameter than the through hole 4 drawn with marking ink or the like on the corresponding portion of the second surface fastener 6. The alignment mark 7 may have the same diameter as that of the through hole 4. Further, the shape of the alignment mark 7 is not limited to a circle, and may be a figure such as a cross. Further, the method of forming the alignment mark 7 is not limited to drawing with marking ink or the like. For example, the deformation, discoloration or processing of the corresponding portion of the second surface fastener 6 or the corresponding portion of the second surface fastener 6 is performed. Alternatively, different color threads may be sewn.

Next, a method for attaching the thermal blanket 1 to the attachment object 5 will be described.
First, the multilayer heat insulating film 2 is placed on the attachment object 5, and alignment is performed so that the alignment mark 7 is located at the center position in the through hole 4 by visual observation from the through hole 4. And the surroundings of the through-hole 4 are pressed from the surface side (anti-attachment surface side) of the multilayer heat insulation film 2, the 1st surface fastener 3 is fitted to the 2nd surface fastener 6, and the thermal blanket 1 attaches the attachment target object 5. It is attached to cover.

In the first embodiment, the through hole 4 is formed so as to penetrate the multilayer heat insulating film 2 and the first surface fastener 3 at the mounting position of the first surface fastener 3 of the multilayer heat insulating film 2, and the alignment mark 7 is attached. Since it is formed on the second surface fastener 6 of the object 5, the first and second surface fasteners can be obtained by positioning the alignment mark 7 in the through hole 4 while looking through the through hole 4. 3 and 6 are aligned. Therefore, even when the multilayer heat insulating film 2 is opaque and the positions of the first and second hook-and-loop fasteners 3 and 6 cannot be grasped from the surface side at the time of attachment, the first and second hook-and-loop fasteners 3 and 6 can be connected to each other. Positioning becomes easy and the mounting work of the thermal blanket 1 becomes simple.
In addition, after the thermal blanket 1 is mounted, the first and second hook-and-loop fasteners 3 and 6 are fitted to each other without being misaligned by visually confirming that the alignment mark 7 is located in the through hole 4. Can guarantee that Therefore, inspection by a plurality of persons and quality recording by photographs can be performed, the mounting quality of the thermal blanket 1 can be improved, and the set values of the adhesive force and the mounting force due to the displacement of the first and second hook-and-loop fasteners 3 and 6 are set. Can be prevented, and the occurrence of peeling of the thermal blanket 1 can be prevented.

  In addition, unnecessarily drilling a hole in the thermal blanket 1 in which the amount of heat exchange between the satellite and the outer space is reduced by radiation insulation leads to deterioration of the function and performance of the thermal blanket 1. However, since one through hole 4 is made for each first surface fastener 3, the number of through holes 4 is small, and deterioration of the function and performance of the thermal blanket 1 can be suppressed. Furthermore, since the through hole 4 is formed in the attachment region of the first surface fastener 3 that is originally estimated to have low heat insulation performance because of the strong conduction heat coupling, the through hole 4 is attached to the first surface fastener 3. The influence on the heat insulation performance of the entire thermal blanket 1 due to the formation in the region is extremely small.

In the first embodiment, the multilayer heat insulating film 2 is formed by superposing 5 to 30 layers of polyester film on which aluminum is vapor-deposited on both sides and stitching it with a thread so as to sandwich a polyester net. However, the number of layers of the polymer film and the polyester net is appropriately set according to the thermal design of the artificial satellite. The number of layers of the heat insulating film may be one layer. Instead of aluminum, a metal such as silver or gold deposited on one or both sides may be used. Moreover, it may replace with a polyester film and may use polymer films, such as a polyimide, polyetherimide, and hydrogen fluoride polypyrene (FEP).
In the first embodiment, the first and second hook-and-loop fasteners 3 and 6 are formed in a rectangular shape, but the shape of the first and second hook-and-loop fasteners 3 and 6 is limited to a rectangular shape. For example, it may be circular or elliptical.
In the first embodiment, one of the first and second hook-and-loop fasteners 3 and 6 is configured as a hook type in which only hooks are arranged, and the other is configured as a loop type in which only loops are arranged. However, both the first and second hook-and-loop fasteners may be configured as a mixed type in which hooks and loops are mixed and arranged.

Embodiment 2. FIG.
FIG. 2 is a view for explaining a thermal blanket mounting method according to Embodiment 2 of the present invention. FIG. 2 (a) shows the mounting state, and FIG. 2 (b) shows the thermal blanket from the back side. FIG. 2 (c) shows an attachment target.

In FIG. 2, the multi-layer insulation is provided at a position where the through holes 4 are separated in the length (major axis) direction of the first surface fastener 3 and symmetrical with respect to the center of the first surface fastener 3 in the length direction. Two are formed so as to penetrate the film 2 and the first surface fastener 3. Two alignment marks 7 are spaced apart in the length (long axis) direction of the second hook-and-loop fastener 6 and symmetric with respect to the center of the second hook-and-loop fastener 6 in the length direction. Is formed. Here, the formation positional relationship of the through hole 4 with respect to the first surface fastener 3 matches the formation positional relationship of the alignment mark 7 with respect to the second surface fastener 6.
Other configurations are the same as those in the first embodiment.

  In the second embodiment, the multilayer heat insulating film 2 is placed on the attachment object 5 and is aligned so that the two alignment marks 7 are respectively located at the center positions in the through holes 4. And the surroundings of the through-hole 4 are pressed from the surface side of the multilayer heat insulation film 2, the 1st surface fastener 3 is fitted to the 2nd surface fastener 6, and the thermal blanket 1 is attached so that the attachment target object 5 may be covered.

  In the first embodiment, the first and second hook-and-loop fasteners 3 and 6 are formed in a rectangular shape, and the alignment of both is performed by one set of the through hole 4 and the alignment mark 7. The first and second hook-and-loop fasteners 3 and 6 are likely to be displaced in the rotational direction (angular displacement in the major axis direction of the rectangle) with respect to the alignment center between the hole 4 and the alignment mark 7. However, according to the second embodiment, the first and second hook-and-loop fasteners 3 and 6 are aligned by the two sets of the through hole 4 and the alignment mark 7. Generation | occurrence | production of the shift | offset | difference of the angle of the rectangular major axis direction of the hook-and-loop fastener 3 and 6 is suppressed, and the highly accurate position alignment of the 1st and 2nd hook-and-loop fasteners 3 and 6 is realizable. Thereby, the reduction of the fitting area resulting from the angle shift of the 1st and 2nd surface fasteners 3 and 6 is suppressed, and the adhesive force and attachment force of the 1st and 2nd surface fasteners 3 and 6 are brought close to a set value. It is possible to reliably prevent the thermal blanket 1 from peeling off.

  In the second embodiment, two through holes 4 and two alignment marks 7 are provided in each of the first and second surface fasteners 3 and 6, but three or more through holes 4 and alignment marks 7 are provided. It may be provided.

Embodiment 3 FIG.
FIG. 3 is a plan view of an essential part for explaining the mounting state of the thermal blanket according to Embodiment 3 of the present invention.
In FIG. 3, the alignment mark 8 is formed in an oval shape, is located at a position corresponding to the through hole 4, and the long axis direction of the oval shape matches the longitudinal direction of the rectangle of the second surface fastener 6. It is formed at the center position of the two-surface fastener 6. Thereby, the alignment mark 8 has a shape indicating the long axis direction of the rectangle of the second surface fastener 6.
Other configurations are the same as those in the first embodiment.

  In the third embodiment, the multilayer heat insulating film 2 is placed on the attachment object 5 and aligned so that the alignment mark 8 is positioned at the center position in the through hole 4. At this time, align the two so that the long axis direction of the alignment mark 8 coincides with the longitudinal direction of the rectangle of the first hook-and-loop fastener 3 judged from the pattern of the thread to which the first hook-and-loop fastener 3 is sewn. To do. Subsequently, the periphery of the through-hole 4 is pressed from the surface side of the multilayer heat insulating film 2, the first surface fastener 3 is fitted to the second surface fastener 6, and the thermal blanket 1 is attached so as to cover the attachment object 5.

As described above, according to the third embodiment, since the alignment mark 8 is formed in an elliptical shape having a long axis that coincides with the longitudinal direction of the rectangle of the second surface fastener 6, the first surface fastener 3. The through hole 4 and the alignment mark 8 are aligned so that the longitudinal direction of the rectangle of the first hook-and-loop fastener 3 and the long axis of the oval determined from the pattern of the thread to which the thread is sewn are aligned. Thus, the occurrence of angular deviation between the first and second surface fasteners 3 and 6 is suppressed, and high-precision alignment of the first and second surface fasteners 3 and 6 can be realized.
Further, only one through hole 4 is provided in each first surface fastener 3, and an increase in heat penetration from the outside due to the provision of the through hole 4 can be suppressed.

In the third embodiment, the alignment mark 8 is formed in an oval shape having a major axis and a minor axis. However, the alignment mark 8 is arranged vertically and horizontally (long axis and minor axis). Cross markings with different lengths may be used. In this case, for example, the longer one (long axis) of the cross marking may be aligned with the longitudinal direction of the rectangle of the second surface fastener 6. Thereby, the cross marking indicates the longitudinal direction of the rectangle of the second surface fastener 6.
Moreover, in the said Embodiment 3, although the shape of the 1st and 2nd surface fasteners 3 and 6 shall be formed in the rectangular shape, the 1st and 2nd surface fasteners 3 and 6 in this Embodiment 3 are assumed. The shape may be a shape having a major axis and a minor axis, and may be, for example, an ellipse or a racetrack.

  In the third embodiment, the through hole 4 is formed in a circular shape. However, the through hole may be an elliptical hole whose major axis coincides with the rectangular longitudinal direction of the first surface fastener 3. . In this case, the occurrence of angular misalignment between the first and second hook-and-loop fasteners 3 and 6 is suppressed by matching the long axes of the ellipses of the through hole and the alignment mark 8. In addition, it is not necessary to determine the longitudinal direction of the first surface fastener 3 from the pattern of the thread with which the first surface fastener 3 is sewn, and the alignment operation is simplified, and the first and second surface fasteners are made. It is possible to further suppress the occurrence of 3 and 6 angular deviations.

Embodiment 4 FIG.
FIG. 4 is a plan view of a principal part showing a mounting state of a thermal blanket according to Embodiment 4 of the present invention.
In FIG. 4, the alignment mark 9 is a circular hole formed at the center position of the second surface fastener 6.
Other configurations are the same as those in the first embodiment.

According to the fourth embodiment, since the alignment mark 9 is formed in a circular hole, the mark 9 can be easily formed at a low cost so as to be aligned by a punch.
Further, if the alignment mark 9 is formed with a diameter smaller than that of the through hole 4, when the alignment mark 9 is aligned with the through hole 4, the gap around the alignment mark 9 is confirmed. Thus, the alignment mark 9 can be aligned so as to be positioned at the center of the through hole 4. If the alignment mark 9 is formed to have the same diameter as the through hole 4, the alignment mark 9 can be formed simultaneously with the through hole 4.

Embodiment 5 FIG.
FIG. 5 is a plan view of an essential part showing a mounting state of a thermal blanket according to Embodiment 5 of the present invention.
In FIG. 5, a cover 10 is, for example, a carbon-impregnated polyimide film tape having a thickness of 5 to 150 microns deposited with aluminum, and the through holes 4 are plugged into the surface of the multilayer heat insulating film 2 using an adhesive. Is pasted.
Other configurations are the same as those in the first embodiment.

In the fifth embodiment, the multilayer heat insulating film 2 is attached to the attachment object 5, and it is visually confirmed that the alignment mark 7 is located in the through hole 4. It is affixed on the surface of the multilayer heat insulation film 2 so that it may block.
Therefore, solar heat input and heat leakage on the orbit via the through hole 4 are reduced. In addition, since the cover 10 is affixed, it can be seen that the confirmation that the alignment mark 7 is positioned in the through hole 4 has been completed. It is possible to reliably prevent the occurrence of peeling due to the positional deviation.

Here, in Embodiment 5 described above, the through hole 4 is closed by the cover 10, but the through hole 4 may be closed by another multilayer heat insulating film 2.
In addition, a carbon-impregnated polyimide film tape is used as the cover 10, but in accordance with the surface thermo-optical characteristics of the outermost layer film of the multilayer heat insulating film 2, a single-sided aluminum-deposited polyimide film tape, a single-sided silver-deposited polyetherimide or Hydrogen fluoride polypyrene (FEP) film tape may be used.

In each of the above embodiments, the attachment object 5 to which the thermal blanket 1 is attached is described as an artificial satellite structure. However, the present invention has the same effect even when applied to the attachment of the thermal blankets 1. .
In each of the above-described embodiments, it goes without saying that radial cuts may be made in the multilayer heat insulating film 2 as a measure for preventing peeling due to a pressure difference between the inside and outside in a reduced pressure environment when the satellite is launched. is there.

It is a figure explaining the attachment method of the thermal blanket which concerns on Embodiment 1 of this invention. It is a figure explaining the attachment method of the thermal blanket which concerns on Embodiment 2 of this invention. It is a principal part top view which shows the attachment state of the thermal blanket which concerns on Embodiment 3 of this invention. It is a principal part top view which shows the attachment state of the thermal blanket which concerns on Embodiment 4 of this invention. It is a principal part top view which shows the attachment state of the thermal blanket which concerns on Embodiment 5 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Thermal blanket, 2 Multilayer heat insulation film, 3 1st surface fastener, 4 Through-hole, 5 Attachment object, 6 2nd surface fastener, 7, 8, 9 Mark for alignment, 10 Cover.

Claims (7)

A multilayer insulation film;
A plurality of hook-and-loop fasteners that are attached to predetermined positions on the mounting surface of the multilayer heat insulating film , are respectively attached to the mounting object, and are fitted to surface fasteners on the mounting object side on which a plurality of alignment marks are formed. ,
The multilayer heat insulating film and the surface so as to correspond to each of the plurality of alignment marks formed on the surface fastener on the attachment object side to be fitted at each attachment position of the plurality of surface fasteners. thermal blanket for satellites to the through holes of the plurality for positioning that is formed to penetrate the fastener, characterized in that there the Bei Ete. A thermal blanket in which a plurality of first surface fasteners are attached at predetermined positions on a mounting surface of a multilayer heat insulating film is attached to an attachment object attached so that a plurality of second surface fasteners correspond to the plurality of first surface fasteners. A method of attaching,
A plurality of through holes are formed so as to penetrate the multilayer heat insulating film and the first surface fastener at the respective attachment positions of the plurality of first surface fasteners,
An alignment mark is formed on each of the plurality of second surface fasteners so as to correspond to each of the through holes formed on the corresponding first surface fastener,
The thermal blanket is attached to the attachment object by fitting the first hook-and-loop fastener to the second hook-and-loop fastener so that the alignment mark is positioned in the through hole. A mounting method for thermal blankets for satellites. The first and second surface fasteners are formed in a shape having a major axis and a minor axis,
The method for attaching a thermal blanket for an artificial satellite according to claim 2, wherein the alignment mark is formed in a shape indicating the long axis direction of the second surface fastener. A thermal blanket in which a plurality of first surface fasteners are attached at predetermined positions on a mounting surface of a multilayer heat insulating film is attached to an attachment object attached so that a plurality of second surface fasteners correspond to the plurality of first surface fasteners. A method of attaching,
The plurality of first and second surface fasteners are each formed in a shape having a major axis and a minor axis,
A through hole is formed so as to penetrate the multilayer heat insulating film and the first surface fastener at each attachment position of the plurality of first surface fasteners,
An alignment mark is formed on each of the plurality of second surface fasteners in a shape indicating the major axis direction of the second surface fastener,
The thermal blanket is attached to the attachment object by fitting the first hook-and-loop fastener to the second hook-and-loop fastener so that the alignment mark is positioned in the through hole. A mounting method for thermal blankets for satellites.   The method for attaching a thermal blanket for an artificial satellite according to claim 3 or 4, wherein the through hole is formed in a shape indicating a major axis direction of the first surface fastener.   3. The artificial satellite according to claim 2, wherein the alignment mark is formed by a hole formed in the second surface fastener in the same shape as the through hole or smaller than the through hole. How to install the thermal blanket.   After the thermal blanket is fitted to the attachment object by fitting the first surface fastener to the second surface fastener, the cover is anti-attached so that the cover closes the through hole. The method for attaching a thermal blanket for an artificial satellite according to any one of claims 2 to 6, wherein the method is attached to a surface.

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