JP7224552B2 - 伸展マスト、その製造方法及び太陽光発電パドル並びに宇宙構造物 - Google Patents
伸展マスト、その製造方法及び太陽光発電パドル並びに宇宙構造物 Download PDFInfo
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Description
図1は、本開示を実施するための実施の形態1における伸展マスト1の概略構成を示す斜視図である。伸展マスト1は、繊維強化プラスチックを用いた第1の繊維層2と、繊維強化プラスチックを用いた第2の繊維層3と、電熱線4からなる構成であり、ロール状に巻き取って収納させる機能と棒状に伸ばして伸展させる機能とを有している。第2の繊維層3は第1の繊維層2と互いに接して配置されている。第2の繊維層3で用いられる繊維強化プラスチックの長手方向の熱膨張率は、第1の繊維層2で用いられる繊維層強化プラスチックの軸方向の熱膨張率より大きい。図1では、伸展マスト1を進展させた状態での長手方向の熱膨張率をPの方向で表している。繊維強化プラスチックとしては、例えば炭素繊維にエポキシ樹脂を含侵させた炭素繊維強化プラスチックを用いることができる。電熱線4は第2の繊維層3上に配置されている。電熱線4は、ロール状に多層に巻き取って収納したときの異なる層の電熱線同士の重なり回数が最小となるように配置されている。電熱線4としては、例えばニクロム線を用いることができる。
次に、本開示を実施するための実施の形態1における伸展マスト1の製造方法について説明する。図6は、本開示を実施するための実施の形態2における製造工程を示すフローチャートである。図7は、本開示を実施するための実施の形態2係る伸展マストを製造する一工程を示す説明図である。
次に、本開示を実施するための実施の形態1における伸展マスト1を適用した太陽光発電パドルについて、図8及び図9を参照して説明する。図8から及び図9中、図1と同一符号は同一又は相当部分を示す。以下では、実施の形態1と同様である点の説明を省略し、異なる点を中心に説明する。
次に、本開示を実施するための実施の形態1における伸展マスト1を適用した太陽光発電パドルを備えた宇宙構造物について、図10から図12を参照して説明する。図10から図12中、図1と同一符号は同一又は相当部分を示す。以下では、実施の形態1と同様である点の説明を省略し、異なる点を中心に説明する。
Claims (6)
- 繊維強化プラスチックを用いた第1の繊維層と、
前記第1の繊維層と接して配置され、長手方向の熱膨張率が前記第1の繊維層で用いられる繊維強化プラスチックの長手方向の熱膨張率より大きい繊維強化プラスチックを用いた第2の繊維層と、
前記第2の繊維層上に配置された電熱線とを備え、
前記第1の繊維層、前記第2の繊維層および前記電熱線がロール状に巻き取って収納されるときの異なる層の電熱線同士の重なり回数が最小となることを特徴とする伸展マスト。 - 繊維強化プラスチックを用いた第1の繊維層と、
前記第1の繊維層と接して配置され、長手方向の熱膨張率が前記第1の繊維層で用いられる繊維強化プラスチックの長手方向の熱膨張率より大きい繊維強化プラスチックを用いた第2の繊維層と、
前記第2の繊維層上に配置された電熱線とを備え、
前記電熱線は、一定周期の正弦波形状であり、長手方向で振幅が異なるように配置されていることを特徴とする伸展マスト。 - 繊維強化プラスチックを用いた第1の繊維層と、長手方向の熱膨張率が前記第1の繊維層で用いられる繊維強化プラスチックの長手方向の熱膨張率より大きい繊維強化プラスチックを用いた第2の繊維層とを軸部材に巻き付けてプリプレグ積層体を形成するステップと、
前記軸部材に巻き付けられた前記プリプレグ積層体をバギングフィルムで覆い、シール材で密閉するステップと、
密閉された前記プリプレグ積層体をオートクレーブ内に設置し、前記バギングフィルムの外部から加圧して加熱するステップと、
前記オートクレーブ内から前記プリプレグ積層体を取り出し、前記軸部材と前記バギングフィルムと前記シール材とを取り外すステップと、
ロール状に巻き取って収納されるときの異なる層の電熱線同士の重なり回数が最小となるように配置された電熱線を前記第2の繊維層の表面に配置するステップと
を備えることを特徴とする伸展マストの製造方法。 - 繊維強化プラスチックを用いた第1の繊維層と、長手方向の熱膨張率が前記第1の繊維層で用いられる繊維強化プラスチックの長手方向の熱膨張率より大きい繊維強化プラスチックを用いた第2の繊維層とを軸部材に巻き付けてプリプレグ積層体を形成するステップと、
前記軸部材に巻き付けられた前記プリプレグ積層体をバギングフィルムで覆い、シール材で密閉するステップと、
密閉された前記プリプレグ積層体をオートクレーブ内に設置し、前記バギングフィルムの外部から加圧して加熱するステップと、
前記オートクレーブ内から前記プリプレグ積層体を取り出し、前記軸部材と前記バギングフィルムと前記シール材とを取り外すステップと、
一定周期の正弦波形状であり、長手方向で振幅が異なるように配置された電熱線を前記第2の繊維層の表面に配置するステップと
を備えることを特徴とする伸展マストの製造方法。 - ブランケットと、
前記ブランケットをロール状に巻き取って収納させる機能及び伸展させる機能を有する、請求項1又は2に記載の伸展マストと、
前記ブランケットの面に複数配設される太陽電池セルと、
を備えることを特徴とする太陽光発電パドル。 - 請求項5に記載の太陽光発電パドルと、
前記太陽光発電パドルが取り付けられる構造物本体と
を備えることを特徴とする宇宙構造物。
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