JPH092400A - Temperature control structure for space structure and temperature adjusting method thereof - Google Patents
Temperature control structure for space structure and temperature adjusting method thereofInfo
- Publication number
- JPH092400A JPH092400A JP7180795A JP18079595A JPH092400A JP H092400 A JPH092400 A JP H092400A JP 7180795 A JP7180795 A JP 7180795A JP 18079595 A JP18079595 A JP 18079595A JP H092400 A JPH092400 A JP H092400A
- Authority
- JP
- Japan
- Prior art keywords
- radiation
- temperature
- earth
- control plate
- space structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000005855 radiation Effects 0.000 claims abstract description 138
- 238000010521 absorption reaction Methods 0.000 claims abstract description 46
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 3
- 238000011282 treatment Methods 0.000 claims description 11
- 238000007743 anodising Methods 0.000 claims description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 abstract description 5
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 abstract description 5
- 239000010407 anodic oxide Substances 0.000 abstract description 4
- 230000020169 heat generation Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
(57)【要約】
【目的】放射吸収と放射を利用して所定温度に温度制御
することを可能とする宇宙空間構造物の温度制御構造及
びその温度調整方法を提供する。
【構成】地球周回軌道上の宇宙空間構造物１の実験機器
搭載部１０の地球指向面に、アルミニウム基材の表面に
入射する放射量との関係で所定の放射平衡温度となる熱
光学特性を有するクロム酸陽極酸化皮膜が形成された放
射吸収制御板１４が設けられ、実験機器搭載部１０内の
温度は、放射吸収制御板１４の熱光学的特性に基づいて
太陽放射，太陽放射の地球反射放射及び地球放射の吸収
と、放射が釣り合って生ずる放射平衡温度と、内部の機
器１１の発熱温度とが平衡した温度に保たれるように構
成されている。
(57) [Summary] [Object] To provide a temperature control structure of a space structure capable of controlling the temperature to a predetermined temperature by utilizing radiation absorption and radiation, and a temperature adjusting method thereof. [Structure] The thermo-optical characteristics of a predetermined radiation equilibrium temperature in relation to the amount of radiation incident on the surface of the aluminum base material on the earth-oriented surface of the experimental equipment mounting portion 10 of the space structure 1 in the orbit around the earth. The radiation absorption control plate 14 having the chromic acid anodic oxide film is provided, and the temperature inside the experimental equipment mounting part 10 is determined based on the thermo-optical characteristics of the radiation absorption control plate 14 for solar radiation and earth reflection of solar radiation. The absorption of the radiation and the earth's radiation, the radiation equilibrium temperature generated by the balance of the radiation, and the heat generation temperature of the internal equipment 11 are maintained at a temperature in equilibrium.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、宇宙空間の構造物にお
いて、放射源からの放射の吸収と自らの放射によって内
部温度を所定に制御する宇宙空間構造物の温度制御構造
及びその調整方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature control structure for a space structure which absorbs radiation from a radiation source and controls the internal temperature to a predetermined level by its own radiation, and a method for adjusting the temperature. .
【０００２】[0002]
【従来の技術】地球周回軌道上の人工衛星等の宇宙空間
構造物は、太陽放射、太陽放射の地球からの反射放射
（アルビード光）、及び地球放射等を吸収し、また、そ
の一方で自らも宇宙空間に向けて放射する。その結果、
何等温度調節を加えない場合には、それらの放射の吸収
（入力）と放射（出力）が平衡した温度（放射平衡温
度）となる。放射吸収量はそれを受ける面と放射源であ
る太陽や地球との角度の変化に伴って変化し、これによ
って平衡温度も変化する。尚、内部機器からの発熱があ
る場合には、構造物の温度は放射平衡温度と内部機器の
発熱温度とが平衡した温度となる。2. Description of the Related Art Space structures such as artificial satellites in orbit around the earth absorb solar radiation, reflected radiation from the earth (albed light), and earth radiation, and at the same time, they themselves. Also radiates toward outer space. as a result,
If no temperature control is applied, the temperature (radiation equilibrium temperature) at which the absorption (input) and the emission (output) of those radiations are in equilibrium. The amount of radiant absorption changes with changes in the angle between the surface receiving it and the sun or earth, which is the radiant source, and this changes the equilibrium temperature. When heat is generated from the internal equipment, the temperature of the structure is a temperature at which the radiation equilibrium temperature and the heat generation temperature of the internal equipment are in equilibrium.
【０００３】ところで、構造物の内部に備えられた各種
装置を安定的に作動させるためには温度を一定の範囲内
に維持することが必要であり、そのために構造物の外面
全体を断熱材で覆って放射吸収と放射（外部からの熱入
力と外部への熱出力）の双方を防いでこれらに起因する
温度変化を防ぐと共に、構造物内部の所定温度への維持
は加熱・冷却装置による加熱や冷却によって行うように
構成される。By the way, in order to stably operate the various devices provided inside the structure, it is necessary to maintain the temperature within a certain range, and therefore, the entire outer surface of the structure is covered with a heat insulating material. It covers both radiation absorption and radiation (heat input from the outside and heat output to the outside) to prevent temperature changes caused by these, and to maintain the internal temperature of the structure at a predetermined temperature is heated by a heating / cooling device. Or cooling is done.
【０００４】[0004]
【発明が解決しようとする課題】しかし、宇宙空間の構
造物では供給電力が限られるため、温度制御に要する電
力の消費を最小限に留めたいという要求がある。However, since the power supply is limited in the structure of outer space, there is a demand for minimizing the power consumption required for temperature control.
【０００５】そこで、太陽や地球からの放射を温度制御
に利用することが考えられるが、そのために外面を断熱
材で覆わずに構成すると、外面の熱光学的特性（太陽光
吸収率と赤外放射率の特性）と入射量によって放射平衡
温度が決まると共に入射量は放射源との相対位置関係
（放射の入射角度）によって変化するために所望の温度
に制御することは不可能であるという問題がある。Therefore, it is conceivable to use the radiation from the sun or the earth for temperature control. For this reason, if the outer surface is not covered with a heat insulating material, the thermo-optical characteristics of the outer surface (solar absorption rate and infrared rays) are used. It is impossible to control to a desired temperature because the radiation equilibrium temperature is determined by the characteristics of the emissivity) and the incident amount, and the incident amount changes depending on the relative positional relationship with the radiation source (radiation incident angle). There is.
【０００６】つまり、外面はペイントによって塗装する
等宇宙空間における耐環境性を有する表面処理を施す必
要があり、そのような表面処理は選択肢が限られると共
にそれら表面処理はそれぞれ固有の熱光学的特性を有す
るものであるため、表面処理を選択すると、入射放射量
（放射源との相対位置関係の変化を考慮した入射放射
量）との関係で放射平衡温度が決まってしまうために、
所望の温度の維持にはやはり加熱・冷却装置を備えて温
度制御を行う必要があるものである。That is, the outer surface must be subjected to a surface treatment having environment resistance in outer space, such as painting with paint. Such surface treatments have a limited number of options, and these surface treatments each have unique thermo-optical characteristics. Therefore, when the surface treatment is selected, the radiation equilibrium temperature is determined in relation to the incident radiation amount (incident radiation amount considering the change in the relative positional relationship with the radiation source).
In order to maintain the desired temperature, it is necessary to provide a heating / cooling device to control the temperature.
【０００７】本発明は、上記問題に鑑みてなされたもの
であって、放射吸収と放射を利用して所定温度に温度制
御することを可能とする宇宙空間構造物の温度制御構造
及びその温度調整方法を提供することを目的とする。The present invention has been made in view of the above problems, and is a temperature control structure for a space structure capable of controlling the temperature to a predetermined temperature by utilizing radiation absorption and radiation, and its temperature adjustment. The purpose is to provide a method.
【０００８】[0008]
【課題を解決する為の手段】上記目的を達成する宇宙空
間構造物の温度制御構造は、宇宙空間構造物の放射源か
らの放射を受ける面に、入射する放射量との関係で所定
の放射平衡温度となる熱光学特性を有する酸化皮膜が表
面に形成されたアルミニウムを基材とする放射吸収制御
板が設けられて構成されていることを特徴とする。A temperature control structure for a space structure that achieves the above object has a predetermined radiation in relation to the amount of radiation incident on the surface of the space structure that receives radiation from a radiation source. It is characterized by being provided with a radiation absorption control plate having an aluminum base material on the surface of which an oxide film having a thermo-optical characteristic that becomes an equilibrium temperature is formed.
【０００９】また、その温度調整方法として、上記放射
吸収制御板は、その表面の酸化皮膜の生成処理時間によ
って、入射する放射量との関係で所定の放射平衡温度を
得る熱光学的特性に設定されることを特徴とする。As a method of adjusting the temperature, the radiation absorption control plate is set to have a thermo-optical characteristic that obtains a predetermined radiation equilibrium temperature in relation to the amount of incident radiation, depending on the time for forming the oxide film on the surface. It is characterized by being done.
【００１０】[0010]
【作用】上記宇宙空間構造物の温度制御構造では、構造
物の放射平衡温度は、放射吸収制御板のアルミニウム基
材の表面に形成された酸化皮膜の熱光学的特性（太陽光
吸収率と赤外放射率の特性）と、当該放射吸収制御板に
入射する放射量によって決まり、構造物の温度は放射平
衡温度と内部機器の発熱温度（発熱があれば）が平衡し
て安定する。放射吸収制御板の酸化皮膜の熱光学的特性
は、その生成処理時間に対して太陽光吸収率と赤外放射
率とが互いに逆の関係で変化し、従って、生成処理時間
を調整することによって所望の放射平衡温度を得るよう
に設定できる。つまり、放射吸収制御板の酸化皮膜生成
処理時間を調整することによってその熱光学的特性を調
整することで、放射吸収と放射を利用して構造体を任意
の温度に制御することができるものである。In the temperature control structure of the above space structure, the radiation equilibrium temperature of the structure is determined by the thermo-optical characteristics of the oxide film formed on the surface of the aluminum substrate of the radiation absorption control plate (solar absorption rate and red External emissivity characteristics) and the amount of radiation that enters the radiation absorption control plate, and the temperature of the structure stabilizes when the radiation equilibrium temperature and the exothermic temperature (if any) of the internal equipment are in equilibrium. The thermo-optical properties of the oxide film of the radiation absorption control plate are changed by the inverse relationship between the solar absorptivity and the infrared emissivity with respect to the generation processing time, and therefore, by adjusting the generation processing time. It can be set to obtain the desired radiation equilibrium temperature. In other words, by adjusting the thermo-optical characteristics by adjusting the oxide film formation treatment time of the radiation absorption control plate, it is possible to control the structure to an arbitrary temperature by utilizing radiation absorption and radiation. is there.
【００１１】また、宇宙構造物の温度制御構造の温度調
整方法によれば、放射吸収制御板の酸化皮膜の熱光学的
特性は、その生成処理時間に対して太陽光吸収率と赤外
放射率とが互いに逆の関係で変化するため、酸化皮膜の
生成処理時間を調整することで入射する放射量との関係
で任意の放射平衡温度となるように設定できる。Further, according to the temperature adjusting method of the temperature control structure of the space structure, the thermo-optical characteristics of the oxide film of the radiation absorption control plate are as follows. Since and change in the opposite relationship, it is possible to set an arbitrary radiation equilibrium temperature in relation to the amount of incident radiation by adjusting the oxide film formation processing time.
【００１２】[0012]
【発明の実施例】以下添付図面を参照して本発明の実施
例について説明する。図１は、本発明に係る宇宙空間構
造物の温度制御構造の一実施例を適用した地球周回軌道
構造物の概略構成を示す斜視図である。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a schematic structure of an earth-orbiting structure to which an embodiment of a temperature control structure for a space structure according to the present invention is applied.
【００１３】図示地球周回軌道構造物１は、地球周回軌
道上を地球に対して一定の姿勢を維持して飛行する。そ
の一部に、図２に斜視図を示すように各種実験装置を備
える実験機器搭載部１０が宇宙空間に暴露された状態で
設けられ、この実験機器搭載部１０に本発明に係る地球
周回軌道構造物の温度制御構造の一実施例が適用されて
いる。The illustrated orbiting earth orbit structure 1 flies in an orbit around the earth while maintaining a constant attitude with respect to the earth. As shown in the perspective view of FIG. 2, an experimental equipment mounting part 10 provided with various kinds of experimental equipment is provided in a part thereof in a state of being exposed to outer space, and the experimental equipment mounting part 10 has an orbit around the earth according to the present invention. An example of a structure temperature control structure is applied.
【００１４】実験機器搭載部位１０は、図２のＡ−Ａ断
面図である図３に示すように複数の小部屋に仕切られた
匡体状であって、内部に機器１１が設けられると共に、
外面に実験装置が結合する結合機構１２が備えられて構
成されている。尚、内面には黒色塗装が施されている。
また、結合機構１２を介することなく下面に別体の機器
収容匡体１５が着脱可能に締着によって装着されること
も行われ、その内部にも機器１１が設けられている。As shown in FIG. 3, which is a sectional view taken along the line AA in FIG. 2, the experimental equipment mounting portion 10 has a box-like shape partitioned into a plurality of small rooms, and the equipment 11 is provided inside the enclosure.
A coupling mechanism 12 for coupling the experimental apparatus is provided on the outer surface. The inner surface is painted black.
In addition, a separate device housing 15 is detachably attached to the lower surface without interposing the coupling mechanism 12, and the device 11 is provided therein.
【００１５】実験機器搭載部位１０及び機器収容匡体１
５の外面は、上面及び側面がアルミニウムを蒸着した樹
脂布等を複数層重ねた断熱シート１３によって覆われ、
この断熱シート１３によって上面及び側面からの放射の
入射と外部への放射が防がれるようになっている。Experimental equipment mounting portion 10 and equipment housing 1
The outer surface of 5 is covered with a heat insulating sheet 13 in which a plurality of layers of resin cloth or the like having aluminum vapor-deposited are laminated on the upper surface and the side surface,
The heat insulating sheet 13 prevents the radiation of radiation from the top and side surfaces and the radiation of radiation to the outside.
【００１６】これに対して、地球指向面である下面に
は、放射吸収制御板１４が装着されており、この放射吸
収制御板１４の熱光学的特性で太陽放射，太陽放射の地
球からの反射放射及び地球放射を吸収すると共に自らも
放射し、この吸収と放射が釣り合った放射平衡温度に実
験機器搭載部１０及び機器収容匡体１５内の温度を制御
する。On the other hand, a radiation absorption control plate 14 is mounted on the lower surface, which is the earth-oriented surface, and the thermo-optical characteristics of the radiation absorption control plate 14 reflect solar radiation and solar radiation from the earth. It absorbs radiation and earth radiation and also radiates itself, and controls the temperature inside the experimental equipment mounting part 10 and the equipment housing 15 to a radiation equilibrium temperature at which the absorption and the radiation are balanced.
【００１７】つまり、上面及び側面は太陽からの放射を
受けるがその入射量は当該構造物１の飛行に伴う太陽と
の相対位置の変化によって大きく変わると共に最大入射
量も多いため、このような絶対量の大きな放射吸収を防
ぎ、地球指向面に備えられた放射吸収制御板１４のみを
介した放射吸収（太陽放射，太陽放射の地球からの反射
放射及び地球放射の吸収）と、放射によって温度制御を
行うようになっているものである。That is, the upper surface and the side surface receive radiation from the sun, but their incident amount largely changes due to the change in the relative position to the sun due to the flight of the structure 1, and the maximum incident amount is large. Prevents a large amount of radiation absorption and absorbs radiation only through the radiation absorption control plate 14 provided on the earth-oriented surface (solar radiation, reflected radiation from the earth of solar radiation and absorption of earth radiation), and temperature control by radiation. Is meant to be done.
【００１８】ここで、平衡温度は、 α＝（ＩＳ＋ＩＡ）＋εＩＲ＝εσＴ４ によって求められる。尚、 ＩＳ：太陽放射（Ｗ／ｍ２） ＩＡ：太陽放射の地球反射（Ｗ／ｍ２） ＩＲ：地球放射（Ｗ／ｍ２） であって地球周回軌道構造物の軌道上の平均値であり、 α：太陽光吸収率 ε：赤外放射率 σ：ステファンボルツマン定数 Ｔ：平衡温度 である。尚、本式は宇宙空間の温度を０Ｋとみなしたも
のである。Here, the equilibrium temperature is obtained by α = (IS + IA) + εIR = εσT4. IS: solar radiation (W / m2) IA: solar radiation reflected on the earth (W / m2) IR: earth radiation (W / m2), which is the average value on the orbit of the earth-orbiting structure, α : Solar absorption rate ε: Infrared emissivity σ: Stefan Boltzmann constant T: Equilibrium temperature. This equation assumes that the temperature of outer space is 0K.
【００１９】放射吸収制御板１４は、アルミニウム基板
の表面に陽極酸化処理によって酸化皮膜（陽極酸化皮
膜）が形成されて成ると共にその陽極酸化皮膜形成面を
外側（地球指向面）として構造体の外面に面ファスナー
等の固定手段によって固定され、その熱光学的特性は陽
極酸化皮膜によって規定されるようになっている。尚、
陽極酸化処理の電解液としてはクロム酸，臭酸又は硫酸
等があるが、経年変化の小さい点でクロム酸を電解液と
するものが好ましい。The radiation absorption control plate 14 is formed by forming an oxide film (anodic oxide film) on the surface of an aluminum substrate by anodizing, and the outer surface of the structure with the anodized film forming surface as the outside (earth-oriented surface). It is fixed by a fixing means such as a surface fastener, and its thermo-optical characteristics are defined by the anodic oxide film. still,
Although chromic acid, hydrobromic acid, sulfuric acid, etc. are used as the electrolytic solution for the anodizing treatment, chromic acid is preferably used as the electrolytic solution because of its small secular change.
【００２０】陽極酸化皮膜は、その処理時間によって、
太陽光吸収率と、赤外放射率が、互いに逆の関係で変化
する。つまり、図４にクロム酸陽極酸化皮膜の処理時
間：ｔに対する表面熱光学的特性のグラフを示すよう
に、太陽光吸収率：αは処理時間：ｔに所定の係数で反
比例して変化し、赤外放射率：εは、処理時間：ｔに対
して所定の係数で正比例して変化する。このため、処理
時間：ｔを調整することで太陽光吸収率：αと赤外放射
率：εの組み合わせ（熱光学的特性）を適宜設定するこ
とが可能となり、これと入射放射量としての太陽放射，
太陽放射の地球からの反射放射及び地球放射との関係で
任意の放射平衡温度を得るように設定することが可能と
なる。The anodic oxide film, depending on the treatment time,
The solar absorptance and the infrared emissivity change in opposite relations. That is, as shown in the graph of the surface thermo-optical characteristics with respect to the treatment time: t of the chromic acid anodized film in FIG. 4, the solar absorptance: α changes in inverse proportion to the treatment time: t by a predetermined coefficient, The infrared emissivity: ε changes in direct proportion to the processing time: t with a predetermined coefficient. Therefore, by adjusting the processing time: t, it becomes possible to appropriately set the combination of the solar absorptivity: α and the infrared emissivity: ε (thermo-optical characteristic), and the solar radiation as an incident radiation amount. radiation,
It is possible to set an arbitrary radiation equilibrium temperature in relation to the reflected radiation from the earth of the solar radiation and the earth radiation.
【００２１】従って、放射吸収制御板１４の熱光学的特
性を、機器１１等内部設備の発熱量と放射平衡温度とが
適温で平衡するように設定すれば、これによって加熱装
置や冷却装置を用いることなく実験機器搭載部１０内の
温度を適温に保持することができるものである。Therefore, if the thermo-optical characteristics of the radiation absorption control plate 14 are set so that the calorific value of the internal equipment such as the equipment 11 and the radiation equilibrium temperature are balanced at an appropriate temperature, a heating device or a cooling device is used. It is possible to maintain the temperature in the experimental equipment mounting section 10 at an appropriate temperature without any need.
【００２２】例えば、地球指向面を白色塗装としたもの
では、その熱光学特性が太陽光吸収率：α＝0.15，赤外
放射率：ε＝0.92で一定不変であって放射平衡温度はか
なり低いものとなるが、クロム酸陽極酸化皮膜を形成し
た放射吸収制御板１４では、図４における処理時間：Ｔ
１で太陽光吸収率：α＝0.55，赤外放射率：ε＝0.57に
設定でき、これによって白色塗装より高い放射平衡温度
を得ることができる。更に、処理時間：Ｔ２を選択すれ
ば太陽光吸収率：α＝0.40，赤外放射率：ε＝0.70とな
って前述の白色塗装と処理時間：Ｔ１の場合の略中間の
放射平衡温度とすることができるものである。For example, in the case where the earth-oriented surface is white-painted, its thermo-optical characteristics are constant with the solar absorptivity: α = 0.15 and infrared emissivity: ε = 0.92, and the radiation equilibrium temperature is considerably low However, with the radiation absorption control plate 14 having the chromic acid anodized film formed, the treatment time in FIG.
With 1, the solar absorptivity: α = 0.55 and infrared emissivity: ε = 0.57 can be set, which allows a higher radiation equilibrium temperature than white coating. Further, if the treatment time: T2 is selected, the solar absorptivity: α = 0.40 and the infrared emissivity: ε = 0.70 are obtained, and the radiation equilibrium temperature is approximately intermediate between the above white coating and the treatment time: T1. Is something that can be done.
【００２３】地球指向面である下面に設けられた放射吸
収制御板１４には、地球放射以外に太陽放射と太陽放射
の地球反射放射とが入射し、この入射量は放射吸収制御
板１４と太陽との相対位置関係及び指向する地表面が昼
か夜かによって異なる。そして、これらの放射は放射吸
収制御板１４に吸収されて当該放射吸収板１４の温度を
上昇させるのである。このように地球指向面に放射吸収
制御板１４を設けるのは、当該地球指向面が太陽放射の
占める割合が小さく、他の面では太陽放射の変動が大き
く温度の変動が大きくなってしまうことによるものであ
る。In addition to the earth radiation, the solar radiation and the earth-reflected radiation of the solar radiation are incident on the radiation absorption control plate 14 provided on the lower surface, which is the earth-orientation surface. The relative positional relationship with and the direction of the ground surface to which it points are different depending on whether it is day or night. Then, these radiations are absorbed by the radiation absorption control plate 14 to raise the temperature of the radiation absorption plate 14. In this way, the radiation absorption control plate 14 is provided on the earth-oriented surface because the proportion of the solar radiation on the earth-oriented surface is small, and on other surfaces, the variation of the solar radiation is large and the temperature variation is large. It is a thing.
【００２４】尚、上記実施例は、地球周回軌道上の構造
物の地球指向面に放射吸収制御板を設けたものである
が、本発明はこれに限るものではなく、他の惑星の回り
を周回する軌道上の構造物や太陽を公転する構造物更に
はその他の軌道を運行する構造物に適用しても良く、放
射源である最寄りの惑星や太陽と放射吸収制御板との位
置関係が変化しない姿勢であれば、安定した温度制御が
可能となるものである。In the above embodiment, the radiation absorption control plate is provided on the earth-orienting surface of the structure on the earth orbit. However, the present invention is not limited to this, and the radiation absorption control plate may be installed around other planets. It may be applied to a structure on an orbit that orbits orbits the sun, or a structure that orbits the sun, and the positional relationship between the radiation absorption control plate and the nearest planet or sun that is the radiation source If the posture does not change, stable temperature control becomes possible.
【００２５】[0025]
【発明の効果】以上説明したように、本発明に係る宇宙
空間構造物の温度制御構造によれば、構造物の放射平衡
温度は、放射源からの放射を受ける宇宙空間構造物の面
に設けられた放射吸収制御板のアルミニウム基材の表面
に形成された酸化皮膜の熱光学的特性（太陽光入射吸収
率と赤外放射率の特性）と、当該放射吸収制御板に入射
する放射量としての太陽放射，太陽放射の地球からの反
射放射及び地球放射によって決まり、構造物の温度は放
射平衡温度と内部機器の発熱温度（発熱があれば）が平
衡して安定的に決まる。放射吸収制御板の酸化皮膜の熱
光学的特性は、その生成処理時間によって所望の放射平
衡温度を得るように設定できるため、放射吸収と放射を
利用して構造体を任意の温度に制御することができる。
これにより、温度制御に係る電力消費を軽減できるもの
である。As described above, according to the temperature control structure for a space structure according to the present invention, the radiation equilibrium temperature of the structure is provided on the surface of the space structure receiving radiation from the radiation source. As the thermo-optical characteristics of the oxide film formed on the surface of the aluminum substrate of the radiation absorption control plate (characteristics of solar light incident absorptivity and infrared emissivity) and the amount of radiation incident on the radiation absorption control plate. Is determined by the solar radiation, the reflected radiation from the earth of the solar radiation, and the earth's radiation, and the temperature of the structure is stably determined by the radiation equilibrium temperature and the heat generation temperature of the internal equipment (if heat is generated) in equilibrium. Since the thermo-optical characteristics of the oxide film of the radiation absorption control plate can be set so as to obtain a desired radiation equilibrium temperature depending on the treatment time for its generation, it is necessary to control the structure to an arbitrary temperature by utilizing radiation absorption and radiation. You can
As a result, power consumption related to temperature control can be reduced.
【００２６】また、宇宙構造物の温度制御構造の温度調
整方法によれば、放射吸収制御板の酸化皮膜の熱光学的
特性は、その生成処理時間に対して太陽光吸収率と赤外
放射率とが互いに逆の関係で変化するため、酸化皮膜の
生成処理時間を調整することで入射する放射量との関係
で任意の放射平衡温度を得る設定が可能となり、即ち制
御温度の調整を容易に行うことができるものである。Further, according to the temperature adjusting method of the temperature control structure of the space structure, the thermo-optical characteristics of the oxide film of the radiation absorption control plate are determined by the solar absorptivity and infrared emissivity with respect to the generation processing time. Since and change in the opposite relationship, it is possible to set the desired radiation equilibrium temperature in relation to the amount of incident radiation by adjusting the oxide film formation treatment time, that is, it is easy to adjust the control temperature. Is what you can do.
【図１】本発明に係る宇宙空間構造物の放射収支制御構
造の一実施例を適用した地球周回軌道構造物の概略構成
を示す斜視図である。FIG. 1 is a perspective view showing a schematic configuration of an earth-orbiting structure to which an embodiment of a radiation balance control structure for a space structure according to the present invention is applied.
【図２】その実験機器搭載部の斜視図である。FIG. 2 is a perspective view of the experimental equipment mounting section.
【図３】図２のＡ-Ａ断面図である。FIG. 3 is a sectional view taken along line AA of FIG. 2;
【図４】放射吸収制御板の処理時間に対する熱光学的特
性の変化を示すグラフである。FIG. 4 is a graph showing changes in thermo-optical characteristics with respect to the processing time of the radiation absorption control plate.
１ 地球周回軌道上構造物 １０ 実験機器搭載部 １４ 放射吸収制御板 1 Earth orbital structure 10 Experimental equipment mounting part 14 Radiation absorption control plate
Claims (4)
る面に、入射する放射量との関係で所定の放射平衡温度
となる熱光学特性を有する酸化皮膜が表面に形成された
アルミニウムを基材とする放射吸収制御板が設けられて
構成されていることを特徴とする宇宙空間構造物の温度
制御構造。1. An aluminum film on the surface of which a radiation source of a space structure receives radiation, on which an oxide film having thermo-optical characteristics that gives a predetermined radiation equilibrium temperature in relation to the amount of incident radiation is formed. A temperature control structure for a space structure, comprising a radiation absorption control plate as a base material.
膜の生成処理時間によって、入射する放射量との関係で
所定の放射平衡温度を得る熱光学的特性に設定されるこ
とを特徴とする請求項１に記載の宇宙空間構造物の温度
制御構造の温度調整方法。2. The radiation absorption control plate is set to have a thermo-optical characteristic for obtaining a predetermined radiation equilibrium temperature in relation to the amount of incident radiation, depending on the time taken to generate an oxide film on the surface of the radiation absorption control plate. The temperature adjusting method of the temperature control structure for a space structure according to claim 1.
り、上記放射吸収制御板は、前記宇宙空間構造物の地球
指向面に設けられていることを特徴とする請求項１に記
載の宇宙空間構造物の温度制御構造。3. The space structure is in an orbit around the earth, and the radiation absorption control plate is provided on an earth-oriented surface of the space structure. Temperature control structure of space structure.
理によって形成されていることを特徴とする請求項１に
記載の宇宙空間構造物の温度制御構造。4. The temperature control structure for an outer space structure according to claim 1, wherein the oxide film of the temperature control plate is formed by anodizing treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180795A JPH092400A (en) | 1995-06-23 | 1995-06-23 | Temperature control structure for space structure and temperature adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7180795A JPH092400A (en) | 1995-06-23 | 1995-06-23 | Temperature control structure for space structure and temperature adjusting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH092400A true JPH092400A (en) | 1997-01-07 |
Family
ID=16089478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7180795A Pending JPH092400A (en) | 1995-06-23 | 1995-06-23 | Temperature control structure for space structure and temperature adjusting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH092400A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56109582A (en) * | 1980-02-04 | 1981-08-31 | Toukiyouto Syuzo Kumiai | Quality improvement of alcoholic beverage produced from starchy substance mainly composed of rice |
| US5637411A (en) * | 1991-07-29 | 1997-06-10 | Hitachi Maxell, Ltd. | Magneto-optical recording medium and process for producing the same |
| US6086993A (en) * | 1997-05-12 | 2000-07-11 | Tdk Corporation | Magneto-optical recording medium |
| CN103863581A (en) * | 2014-03-27 | 2014-06-18 | 北京空间机电研究所 | Indirect thermal control device for high resolution optical remote sensor precision temperature control |
| CN104210673A (en) * | 2014-09-19 | 2014-12-17 | 航天东方红卫星有限公司 | Thermal control method for star sensor assembly |
-
1995
- 1995-06-23 JP JP7180795A patent/JPH092400A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56109582A (en) * | 1980-02-04 | 1981-08-31 | Toukiyouto Syuzo Kumiai | Quality improvement of alcoholic beverage produced from starchy substance mainly composed of rice |
| US5637411A (en) * | 1991-07-29 | 1997-06-10 | Hitachi Maxell, Ltd. | Magneto-optical recording medium and process for producing the same |
| US6086993A (en) * | 1997-05-12 | 2000-07-11 | Tdk Corporation | Magneto-optical recording medium |
| CN103863581A (en) * | 2014-03-27 | 2014-06-18 | 北京空间机电研究所 | Indirect thermal control device for high resolution optical remote sensor precision temperature control |
| CN104210673A (en) * | 2014-09-19 | 2014-12-17 | 航天东方红卫星有限公司 | Thermal control method for star sensor assembly |
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