@inproceedings{oai:jaxa.repo.nii.ac.jp:00017446, author = {後藤, 健 and 八田, 博志 and 佐藤, 哲也 and 棚次, 亘弘 and Goto, Ken and Hatta, Hiroshi and Sato, Tetsuya and Tanatsugu, Nobuhiro}, book = {宇宙輸送シンポジウム 平成13年度, Proceedings of Space Transportation Symposium FY2001}, month = {Apr}, note = {Cold spin tests of 3DC/C disk were conducted to elucidate feasibility for the turbine disk of ATREX engine. The fracture speed of the 3DC/C disk was 516 m/s, and this speed satisfied the condition of turbine system in ATREX engine. The fly-out of the fiber-bundles from 3DC/C disk occurred before the total fracture of the disk and the shaft vibration simultaneously increased. The fly-out behavior was characterized by the delamination of the fiber-bundles from the surface of the 3DC/C disk. The effective preventive methods for fly-out behavior were concluded as to use fine fiber texture and increase inter-bundle bonding strength. Enhancement of the inter-bundle bonding strength by partial Si conversion was shown to be effective to improve the onset speed of fly-out behavior. The machinability of 3DC/Cs for turbine blade was also examined and the tip radius could be machined with 0.5 mm and it remained its shape until 470 m/s., 資料番号: AA0033392018}, pages = {69--74}, publisher = {宇宙科学研究所, The Institute of Space and Astronautical Science (ISAS)}, title = {Development study of carbon-carbon composite turbine disk for ATREX engine}, year = {2002} }