International society proceeding with a referee
>FY2012-2013
Under construction
>Toshiyuki Suzuki, Kazuhisa Fujita, Takeharu Sakai,Kei-ichi Okuyama, Sumio Kato and Seiji Nishio, Thermal Response Analysis of Low Density CFRP Ablator, 2011-e-41, International Symposium on Space Technology and Science，Okinawa，Japan，June 5-10, 2011.
>Takeharu Sakai, Takahiro Inoue, Mitsunobu Kuribayashi, Keiichi Okuyama, Toshiyuki Suzuki, Kazuhisa Fujita, Sumio Kato and Seiji Nishio,Post-Test Sample Analysis of Low Density Ablators Using Arcjet, 2011-e-40, International Symposium on Space Technology and Science，Okinawa，Japan，June 5-10, 2011.
>Keiichi Okuyama, Teruhiko Kanada, Sumio Kato,Takeharu Sakai, Toshiyuki Suzuki, Kazuhisa Fujita and Seiji Nishio, Thermochemical and Thermomechanical Characteristics of an Ultra Lightweight CFRP under High Temperature Environments,2011-c-15, International Symposium on Space Technology and Science，Okinawa，Japan，June 5-10, 2011.
>Toshiyuki SUZUKI, Kazuhisa FUJITA, Takeharu SAKAI, Kei-ichi OKUYAMA, Sumio KATO and Seiji NISHIO, Evaluation of Prediction Accuracy of Thermal Response of Ablator Under Arcjet Flow Condisions, AIAA2010-4787, 10th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, Chicago, Illinois, June 28 – July 1, 2010.
>Shunsuke ONISHI, Keiichi OKUYAMA, Structural Design of UNITEC-1, ISTS2009-c-26, International Symposium on Space Technology and Science，Tsukuba，Japan，July 5-12, 2009.
>Koichi YONEMOTO, Yuta YAMAMOTO, Keiichi OKUYAMA and Takeo EBINA, Application of CFRP with High Hydrogen Gas Barrier Characteristics to Fuel Tanks of Space Transportation System, International Symposium on Space Technology and Science，Hamamatsu，Japan，June 1-June 8, 2008.
>Koichi YONEMOTO, Yuta YAMAMOTO, Takeo EBINA and Keiichi OKUYAMA, High Hydrogen Gas Barrier Performance Of Carbon Fiber Reinforced Plastic With Non-Metallic Crystal Layer, SAMPE (The Society for the Advancement of Material and Process Engineering), Long Beech Convention Center, Long Beach, CA, USA, May18-22, 2008.
>Toshiyuki SUZUKI, Kazuo FUJITA, Takeharu SAKAI, Keiichi OKUYAMA, and Sumio KATO: Experimental and Numerical Study of Thermal Response of Ablator in an Arc-Jet Facility, 45th Aerospace Sciences Meeting and Exhibit, Reno, January, 2007.
>Tetsuya YAMADA, Seiji MATSUDA,Keiichi OKUYAMA, Nobuyuki ISHI,Lessons Learned from the Recovered Heatshield of the USERS REV Capsule,IAC-05-2.6.11, Fukuoka, Japan, October 17-2, 2005.
>Sumio KATO，Ryuji SAKATA，Yoshitsugu KANNO，Masahiro UTO，Keiichi OKUYAMA，Eiichi UEGAKI，Shozo SHINGU,Koichi IJICHI and Yoshifumi INATANI，Development of USERS/REM Heat Shield System and its Evaluation after Re-entry，ISTS2004-e-36，International Symposium on Space Technology and Science，Miyazaki，Japan，May 30-June, 2004.
>Keiichi OKUYAMA，Sumio KATO，Yoshitsugu KANNO and Masaru ZAKO，A Lightweight Design Approach to An Atmospheric Re-entry Vehicle，TP04PUB60 atICCM-14(14thInternationalConference on Composite Materials)，San-Diego，California，July 14-18, 2004.
>Keiichi OKUYAMA，，A Concept of Micro Satellite and Its Launch System，The First International Cube Sat Symposium，Tokyo，Japan，March 10-11, 2003.
>Keiichi OKUYAMA，Sumio KATO Yoshitsugu KANNO，Masahiro UTO，Ryuji SAKATA，Kazumori HAMA，Tetsuya YAMADA，Yoshifumi INATANI and Masaru ZAKO，A Light-weight Heat Shield System Using a Phenol CFRP Material，4th European Workshop on Hot Structures and Thermal Protection Systems for Space Vehicles，Palermo，Italy，November 26-29, 2002.
>Keiichi OKUYAMA，Sumio KATO，Ryuji SAKATA，Masahiro UTO，Kazumori HAMA and Yoshifumi INATAN，The Arc-Heated Test Results for USERS/REM Heat Shield System Development，ISTS 2000-q-25，International Symposium on Space Technology and Science, Morioka，Japan，May 28-June 4，2000.
>Keiichi OKUYAMA，Yasuo ISHII andToru IIDA，Conceptual Study on Thermal Control System for HOPE (H-Ⅱrocket Orbiting Plane)，International Symposium on Space Technology and Science，Kagoshima，Japan，1992.
