@article{oai:kyutech.repo.nii.ac.jp:00006413, author = {Sakai, Takeharu and Okuyama, Keiichi and Kobayashi, Yusuke and Tomita, Masami and Suzuki, Toshiyuki and Fujita, Kazuhisa and Kato, Sumio and Nishio, Seiji}, issue = {ists28}, journal = {Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan}, month = {Sep}, note = {An existing computer code named super charring materials ablation (SCMA) is updated by implementing a coking process, in which a pyrolysis gas cokes within a char layer. The conservation equations for masses for resin, and coke, and energy are given. A coking rate equation is calculated by accounting for mass conservation of carbon deposited within a char layer. The method so upgraded is applied to the post-test sample analysis of the in-depth density profile for a low density ablator heated in an arcjet wind tunnel under one operating condition to evaluate the temperature variation of mass fraction of carbon contained in a pyrolysis gas used in the coking rate equation. The calculated result between with and without coking is compared to discuss the effect of coking on ablation behaviors., 28th International Symposium on Space Technology and Science (28th ISTS), 5-12 June 2011, Okinawa, Japan}, pages = {Pe_65--Pe_71}, title = {Post-Test Sample Analysis of a Low Density Ablator Using Arcjet}, volume = {10}, year = {2012} }