JP6539429B2 - 可撓性熱制御材料及び推進薬タンク - Google Patents
可撓性熱制御材料及び推進薬タンク Download PDFInfo
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- 239000000463 material Substances 0.000 title claims description 127
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
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- SKRWFPLZQAAQSU-UHFFFAOYSA-N stibanylidynetin;hydrate Chemical compound O.[Sn].[Sb] SKRWFPLZQAAQSU-UHFFFAOYSA-N 0.000 description 2
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
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- 150000002431 hydrogen Chemical class 0.000 description 1
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- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
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- 238000002310 reflectometry Methods 0.000 description 1
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- 239000004408 titanium dioxide Substances 0.000 description 1
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Classifications
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- B32B37/18—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
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Description
反射層12は、高反射性材料層であることが好ましい。それにより太陽光を反射することで、機体への入熱を低減することが可能となる。ここで、高反射性材料層とは、高反射性金属と称される材料等で構成された層である。そのような高反射性金属の具体例としては、例えば、銀(Ag)、アルミニウム(Al)、及び金(Au)等を挙げることができるが、これらに限定されない。また高反射性材料層としては、金属元素の単体のみならず、合金、化合物、それらの複合材料等を使用することができる。
赤外線放射層13は、反射層12で反射された太陽光を宇宙空間に放射する機能を有する層である。宇宙空間においては、酸素のない真空状態となるため、熱移動媒体を必要としない輻射による熱移動が支配的となる。機体側20の熱は、赤外線放射率が大きいほど、宇宙空間へ放射されやすい。したがって、赤外線放射層13では、太陽光波長域の吸収が小さく、且つ、赤外線の放射率が大きい程、機体の温度上昇を抑制することができる。
また、シルセスキオキサン層13cを形成するのは、耐原子状酸素性がシリコーン材料の中で高いこと及びタックが無いことで好ましいものとなる。
図7は、可撓性熱制御材料を被着体へ施工する一例を示す模式図である。図示の例においては、被着体は、ロケットの推進薬タンク(例えば、液体水素タンク)である。図8〜図10は、図7におけるA部分を拡大した拡大模式断面図である。
ポリイミド発泡体断熱層41は、気泡がオープンセル構造の発泡体であり、真空断熱効果を発揮するものとなる。PIF断熱層31とポリイミド発泡体断熱層41との2層の断熱層42の厚さは、例えば10〜50mm程度とするのが好ましい。
図11は、ロケットの模式図の一例を示す図である。図11に示すように、推進薬タンクである液体水素タンク51の頭部側には台座52を介して衛星53が設けられている。液体水素タンク51の後方側にはロッド54を介して液体酸素タンク55が設けられ、エンジン56側に供給している。
本実施例では、液体水素タンク51の表面に、PIF断熱層31が形成されており、このPIF断熱層31の表面に、前述した実施例に係る可撓性熱制御材料10(10A〜10F)が被覆されている。なお、可撓性熱制御材料10(10A〜10E)は実施例1乃至6と同一であるので、その説明は省略する。
これにより、PIF断熱層31の表面に形成される可撓性熱制御材料10(10A〜10E)や衛星53に対して、出ガス33による蒸着等の悪影響を抑制するようにし、衛星53を保護するようにしている。
本実施例では、液体水素タンク51のタンク本体30aの表面に、PIF断熱層31とポリイミド発泡体断熱層41との2層構造の断熱層42が形成されており、この2層構造の断熱層42の表面に、前述した実施例に係る可撓性熱制御材料10(10A〜10E)が被覆されている。
12 反射層
13 赤外線放射層
14 酸化防止層
15 支持層
16 保護層
17 導電層
18 接合層
20 機体側(被着体側)
21 宇宙空間側
30 推進薬タンク(被着体)
31 PIF断熱層
41 ポリイミド発泡体断熱層
Claims (14)
- 太陽光を反射する反射層と、
前記反射層に積層され、赤外線を放射する赤外線放射層とからなり、
前記赤外線放射層は、シルセスキオキサン層で構成されると共に、
前記赤外線放射層において、前記反射層が積層された面とは反対側の面に、保護層を更に積層してなり、且つ
前記保護層は、シルセスキオキサン層で構成される可撓性熱制御材料。 - 前記反射層において、前記赤外線放射層が積層された面とは反対側の面に、支持層を更に積層してなる請求項1に記載の可撓性熱制御材料。
- 前記反射層において、前記赤外線放射層が積層された面とは反対側の面に、酸化防止層を更に積層してなる請求項1または2に記載の可撓性熱制御材料。
- 前記反射層において、前記赤外線放射層が積層された面とは反対側の面に、酸化防止層を更に積層してなると共に、
前記酸化防止層は、前記反射層と前記支持層との間に設けられる請求項2に記載の可撓性熱制御材料。 - 接合層により被着体の表面に固定されるものである請求項1から4のいずれか1つに記載の可撓性熱制御材料。
- 締結部材により被着体の表面に固定されるものである請求項1から4のいずれか1つに記載の可撓性熱制御材料。
- 前記被着体が宇宙空間で使用されるロケット又は人工衛星の推進薬タンクである請求項5または6に記載の可撓性熱制御材料。
- 前記推進薬タンクが液体水素タンクである請求項7に記載の可撓性熱制御材料。
- 前記被着体の表面に、ポリイソシアヌレートフォーム(PIF)断熱層又はポリイミド発泡体断熱層のいずれか一方又はこれらの積層体の断熱層を有する請求項5から8いずれか1つに記載の可撓性熱制御材料。
- ポリイソシアヌレートフォーム(PIF)断熱層又はポリイミド発泡体断熱層のいずれか一方又はこれらの積層体に、ガス抜き用溝を有する請求項9に記載の可撓性熱制御材料。
- 推進薬タンク本体の表面に請求項1から5のいずれか1つに記載の可撓性熱制御材料を固定してなる推進薬タンク。
- 前記推進薬タンク本体が液体水素タンク本体である請求項11に記載の推進薬タンク。
- 前記推進薬タンク本体の表面に、ポリイソシアヌレートフォーム(PIF)断熱層又はポリイミド発泡体断熱層のいずれか一方又はこれらの積層体の断熱層を有する請求項11または12に記載の推進薬タンク。
- ポリイソシアヌレートフォーム(PIF)断熱層又はポリイミド発泡体断熱層のいずれか一方又はこれらの積層体に、ガス抜き用溝を有する請求項13に記載の推進薬タンク。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014072893A JP6539429B2 (ja) | 2013-08-28 | 2014-03-31 | 可撓性熱制御材料及び推進薬タンク |
PCT/JP2014/072240 WO2015029974A1 (ja) | 2013-08-28 | 2014-08-26 | 可撓性熱制御材料 |
EP14839959.5A EP3015262B1 (en) | 2013-08-28 | 2014-08-26 | Flexible thermal-control material |
US14/904,727 US10220967B2 (en) | 2013-08-28 | 2014-08-26 | Flexible thermal-control material |
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JP2013177362 | 2013-08-28 | ||
JP2013177362 | 2013-08-28 | ||
JP2014072893A JP6539429B2 (ja) | 2013-08-28 | 2014-03-31 | 可撓性熱制御材料及び推進薬タンク |
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EP3000583A1 (en) * | 2014-09-29 | 2016-03-30 | Inergy Automotive Systems Research (Société Anonyme) | Vehicle component with heat shield and method for manufacturing the same |
KR101732488B1 (ko) | 2015-06-15 | 2017-05-04 | 한국과학기술원 | 전단농화유체를 이용한 내충격 플렉서블 복합체 및 이를 이용한 형태 가변 보호장치 |
WO2018029840A1 (ja) * | 2016-08-10 | 2018-02-15 | 株式会社ispace | 探査機 |
US10408378B2 (en) | 2017-07-17 | 2019-09-10 | Raytheon Company | Three-dimensional multi-shell insulation |
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JP7320982B2 (ja) * | 2019-05-09 | 2023-08-04 | 大阪瓦斯株式会社 | 農業用ハウス |
CN112379472B (zh) * | 2020-11-13 | 2022-08-16 | 上海卫星装备研究所 | 一种低吸辐比的光学太阳反射镜及其制备方法 |
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WO2015029974A1 (ja) | 2015-03-05 |
US20160159501A1 (en) | 2016-06-09 |
US10220967B2 (en) | 2019-03-05 |
EP3015262B1 (en) | 2020-11-04 |
JP2015063118A (ja) | 2015-04-09 |
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