@techreport{oai:jaxa.repo.nii.ac.jp:00006254, author = {馬場, 尚子 and 石澤, 淳一郎 and 南, 伸太朗 and 島村, 宏之 and 今川, 吉郎 and 宇治野, 功 and 松永, 浩史 and 土橋, 昭彦 and 大坊, 俊彰 and Baba, Naoko and Ishizawa, Junichiro and Minami, Shintaro and Shimamura, Hiroyuki and Imagawa, Kichiro and Ujino, Takumi and Matsunaga, Hiroshi and Tsuchihashi, Akihiko and Daibo, Toshiaki}, month = {Jan}, note = {H-2A launch vehicle general review revealed reduction in strength of thermal insulator on the fairing. Sealant which adheres sheet insulator was found incurable also. Mechanical tests and SEM (Scanning Electron Microscope) observations suggested that incomplete mixing of the raw materials was the reason of lower strength due to degraded uniformity of the insulator. By improving mixing process, well performed, firm insulator was achieved. Evaluation of cure processes proved that alcohol released during insulator cure obstructed hardening of sealant resulting in insufficient cure time. Adequate cure time assured reduced alcohol release and mature vulcanization of sealant. The process was improved based on these findings, and this resulted in more reliable insulator., 資料番号: AA0049056023, レポート番号: JAXA-SP-05-010}, title = {H-2Aロケットフェアリング断熱材の施工工程改善}, year = {2006} }