Journal Paper

• M. Machida, T. Tomura, H. Sakamoto, T. Fukao. Stretchable-substrate-impregnated fabric: Deploy- able reflectarray antennas for CubeSats, IEEE Access, vol. 12, pp. 58562–58572, Apr. 2024.
• Dongwon You, Xiaolin Wang, Hans Herdian, Xi Fu, Hojun Lee, Michihiro Ide, Carrel Da Gomez, Zheng Li, Jill Mayeda, Daisuke Awaji, Pang Jian, H. Sakamoto, K. Okada, A. Shirane. A Ka-Band Deployable Active Phased Array Transmitter Fabricated on 4-Layer Liquid Crystal Polymer Substrate for Small-Satellite Mount, IEEE Access, IEEE, Vol. 11, pp. 69522-69535, July 2023.
• Dongwon You, Xi Fu, Hans Herdian, Xiaolin Wang, Yasuto Narukiyo, Ashbir Aviat Fadila, Hojun Lee, Michihiro Ide, Sena Kato, Zheng Li, Yun Wang, Daisuke Awaji, Jian Pang, Hiraku Sakamoto, Kenichi Okada, Atsushi Shirane. IEEE Microwave and Wireless Technology Letters (MWTL), Vol. 33, No. 6, pp. 903-906, June 2023.
• Yuta Takahashi, Hiraku Sakamoto, Shinichiro Sakai. Kinematics Control of Electromagnetic Formation Flight Using Angular-Momentum Conservation Constraint," Journal of Guidance, Control, and Dynamics, Journal of Guidance, Control, and Dynamics, Feb. 2022.
• Shogo Kadonishi, Hiraku Sakamoto, MASAAKI OKUMA. Deployment behavior of planar gossamer space structures made of plain-woven textile, Acta Astronautica, Jan. 2022.
• Shogo Kadonishi, Hiraku Sakamoto, Masaaki Okuma. Compact Packaging of Planar Gossamer Space Structures Using Textile Membranes, Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 19, No. 2, pp. 245-251, Oct. 2021.
• K. Omoto, T. Tomura, H. Sakamoto. Proof-of-concept on misalignment compensation for 5.8-GHz-band reflectarray antennas by varactor diodes, IEEE Access, vol. 9, Apr. 2021.
• Shinji Takeda, Sae Koide, Keisuke Omoto, Hiraku Sakamoto, Hiroaki Tanaka, Kosei Ishimura, MASAAKI OKUMA. 宇宙形状可変鏡における複数アクチュエーションの連成とヒステリシス, 航空宇宙技術, Vol. 19, pp. 151-158, Oct. 2020.
• K. Ikeya, H. Sakamoto, H. Nakanishi, H. Furuya, T. Tomura, R. Ide, R. Iijima, Y. Iwasaki, K. Ohno, K. Omoto, T. Furuya, T. Hayashi, M. Kato, S. Koide, M. Kurosaki, Y. Nakatsuka, S. Okuyama, R. Kashiyama, J. Nakamura, W. Nio, T. Tsunemitsu, Y. Yamazaki, K. Taga, B. Hohmann, T. Amamoto, T. Chubachi, S. Tamura, H. Okada, A. Watanabe, N. Kawabata, T. Hori, H. Ito, T. Kuratomi, Y. Shimoda, N. Hidaka, K. Watanabe, A. Torisaka, M. Yamazaki. Significance of 3U CubeSat OrigamiSat-1 for space demonstration of multifunctional deployable membrane, Acta Astronautica, vol. 173, pp. 363-377, Aug. 2020.
• Ayako Torisaka, D. Hayashi, S. Kawasaki, N. Nishii, Yuri Terada, S. Yokoyama, H. Sakamoto. Development of shape monitoring system using SMA dipole antenna on a deployable membrane structure, Acta Astronautica, Vol. 160, pp. 147-154, July 2019.
• Akihiro Doi*, Yusuke Kono, Kimihiro Kimura, Satomi Nakahara, Tomoaki Oyama, Nozomi Okada, Yasutaka Satou, Kazuyoshi Yamashita, Naoko Matsumoto, Mitsuhisa Baba, Daisuke Yasuda, Shunsaku Suzuki, Yutaka Hasegawa, Mareki Honma, Hiroaki Tanaka, Kosei Ishimura, Yasuhiro Murata, Reiho Shimomukai, Tomohiro Tachi, Kazuya Saito, Naohiko Watanabe, Nobutaka Bando, Osamu Kameya, Yoshinori Yonekura, Mamoru Sekido, Yoshiyuki Inoue, Hiraku Sakamoto, Nozomu Kogiso, Yasuhiro Shoji, Hideo Ogawa, Kenta Fujisawa, Masanao Narita, Hiroshi Shibai, Hideyuki Fuke, Kenta Uehara, Shoko Koyama. A balloon-borne very long baseline interferometry experiment in the stratosphere: Systems design and developments, Advances in Space Research, Vol. 63, No. 1, Jan. 2019.
• Reo Kashiyama, Hiraku Sakamoto, Hiroaki Tanaka, MASAAKI OKUMA, Kosei Ishimura. 宇宙アンテナ形状制御機構の熱変形低減法の試作による評価, 日本機械学会論文集, Vol. 84, No. 863, Oct. 2018.
• Mario Walker, Masaaki Okuma, Hiraku Sakamoto. Attenuation of tall flexible structures using longitudinal moving mass: Moving finite element method, Noise and Vibration Worldwide, Vol. 48, Issue 9-10, pp. 119-131, Sept. 2017.
• Aya Aihara, Takayuki Kawaguchi, N. Miki, T. Azami, Hiraku Sakamoto, Masaaki Okuma. A Vibration Estimation Method for Wind Turbine Blades, Experimental Mechanics, Vol. 57, No. 8, pp. 1213-1224, May 2017.
• Kyunghyun Lee, Aya Aihara, Ganbayar Puntsagdash, Takayuki Kawaguchi, Hiraku Sakamoto, Masaaki Okuma. Feasibility study on a strain based deflection monitoring system for wind turbine blades, Mechanical Systems and Signal Processing, Vol. 82, pp. 117-129, Jan. 2017.
• Kosei Ishimura, Taisuke Kawachi, Hiroaki Tanaka, Hiraku Sakamoto, Koji Tanaka, Hiroshi Yamakawa. Artificial Lagrange Points for Spacecraft with a Tethered Anchor, Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 14, Issue ists30, pp. 69-73, May 2016.
• Kouta Gotou, Hiraku Sakamoto, Akiya Inagaki, Hiroaki Tanaka, Kosei Ishimura, Masaaki Okuma. Actuator Design for Space Smart Reflector to Reduce Thermal Distortion, Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 14, Issue ists30, pp. 25-31, May 2016.
• Nozomu Kogiso, Takayuki Okabe, Hiraku Sakamoto, Hiroaki Tanaka. Finite Element Updating Method for High-Precision Space Reflector Model Using Multiobjective Optimization, Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 14, Issue ists30, pp. 7-12, May 2016.
• Hiroaki Tanaka, Hiraku Sakamoto, Akiya Inagaki, Kosei Ishimura, Akihiro Doi, Yusuke Kono, Tomoaki Oyama, Kazuki Watanabe, Yu Oikawa, Takeshi Kuratomi. Development of a smart reconfigurable reflector prototype for an extremely high-frequency antenna, Journal of Intelligent Material Systems and Structures, Vol. 27, No. 6, pp. 764-773, Apr. 2016.
• M. C. NATORI, Hiraku SAKAMOTO, Nobuhisa KATSUMATA, Hiroshi YAMAKAWA, Naoko KISHIMOTO. Conceptual model study using origami for membrane space structures - a perspective of origami-based engineering, Mechanical Engineering Reviews, Vol. 2, Issue 1, pp. 1-5, Jan. 2015.
• T. Nishizawa, H. Sakamoto, M. Okuma, H. Furuya, Y. Sato, N. Okuizumi, Y. Shirasawa, O. Mori. Evaluation of Crease Stiffness on Out-of-plane Stiffness of Solar Sails, Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, JSASS, Vol. 12, No. ists29, pp. Pc_107-Pc113, Dec. 2014.
• H. Sakamoto, S. Kadonishi, Y. Satou, H. Furuya, Y. Shirasawa, N. Okuizumi, O. Mori, H. Sawada, J. Matsumoto, Y. Miyazaki, M. Okuma. Development of Repeatable Storage Method for a Large Solar Sail, Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, JSASS, Vol. 12, No. ists29, pp. Pc_75-Pc82, Nov. 2014.
• H. Sakamoto, T. Miura, K. Kawaguchi, T. Kamiya, H. Akagi, K. Akiyama, Y. Okada N. Kohtake, S. Shirasaka. Systems Engineering Education through Students’ CanSat Project Interacting with Young Professional Engineers, Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 12, No. ists29, pp. Tt_11-Tt17, Oct. 2014.
• tsuyoshi satou, Hiraku Sakamoto, Kengo Shintaku, 大野剛, Saburo Matunaga, Osamu Mori, Yoji Shirasawa, 奥泉信克, MASAAKI OKUMA. 折り目剛性を考慮した宇宙膜構造の非対称展開挙動の解析, 日本航空宇宙学会論文集・航空宇宙技術, Vol. 13, pp. 71-75, Sept. 2014.
• Y. Satou, H. Furuya, H. Sakamoto, Y. Shirasawa, O. Mori, N. Okuizumi, M. C. Natori. Wrapping Experiments of Piecewise Straight Fold Membrane for Large Solar Sail, Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 12, No. ists29, pp. Pc_49-Pc54, Aug. 2014.
• K. Shintaku, S. Matunaga, G. Ono, H. Sakamoto, T. Satoh, O. Mori, Y. Shirawasa, N. Okuizumi. Experiment and Analysis of Spinning Membrane Deployment Focusing on Shape Imbalance for Solar Sail, Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 12, No. ists29, pp. pp. Pc_55-Pc62, Aug. 2014.
• Hiraku Sakamoto, M.C. Natori, Shogo Kadonishi, Y Satou, Y. Shirasawa, N. Okuizumi, O. Mori, HIROSHI FURUYA, MASAAKI OKUMA. Folding Patterns of Planar Gossamer Space Structures Consisting of Membranes and Booms, Acta Astronautica, Vol. 94, No. 1, pp. 34-41, Jan. 2014.
• Yoji Shirasawa, Yasuyuki Miyazaki, 奥泉信克, Hiraku Sakamoto, Osamu Mori, 澤田弘崇, HIROSHI FURUYA, Saburo Matunaga, M. C. Natori, 津田雄一, 川口淳一郎. IKAROSのセイル展開解析（特集 小型ソーラー電力セイル実証機「IKAROS」第5回）, 日本航空宇宙学会誌 = Journal of the Japan Society for Aeronautical and Space Sciences, Vol. 61, No. 1, pp. 14-21, Jan. 2013.
• Hiraku Sakamoto. On-orbit Result and Analysis of Sail Deployment of World's First Solar Power Sail IKAROS, Journal of Space Technology and Science, Vol. 27, No. 1, pp. 54-68, 2013.
• 澤田弘崇, Osamu Mori, 奥泉信克, Yoji Shirasawa, Yasuyuki Miyazaki, M. C. Natori, Hiraku Sakamoto, HIROSHI FURUYA, Saburo Matunaga, Shinichi Inagawa, 木村真一, 津田雄一. IKAROSのセイル展開ミッション（特集 小型ソーラー電力セイル実証機「IKAROS」第4回）, 日本航空宇宙学会誌 = Journal of the Japan Society for Aeronautical and Space Sciences, Vol. 60, No. 12, pp. 429-437, Dec. 2012.
• Hiraku Sakamoto. Evaluation of Membrane Dynamics of IKAROS Based on Flight Result and Simulation Using Multi-Particle Model, Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan, Vol. 10, pp. Po₄21-Po₄26, Dec. 2012.
• Hiraku Sakamoto, Shirasawa, Y., Miyazaki, Y., Sakamoto, H., Hasome, M., Okuizumi, N., Sawada, H., Furuya, H., Saburo Matunaga, Natori, M., Tsuda, Y., Saiki, T., Funase, R., Mimasu, Y., Kawaguchi, J.. Deployment and Steering Dynamics of Spinning Solar Sail "IKAROS", Journal of Aerospace Engineering, Sciences and Application, Vol. IV, No. 4, Oct. 2012.
• H. Sakamoto, Y. Miyazaki, O. Mori. Transient Dynamic Analysis of Gossamer Appendage Deployment Using Nonlinear Finite Element Method, Journal of Spacecraft and Rockets, American Institute of Aeronautics and Astronautics, Vol. 48, No. 5, pp. 881-890, Sept. 2011.  Official location  
• Osamu MORI, Hirotaka SAWADA, F. Hanaoka, Junichiro KAWAGUCHI, Y. Shirasawa, Fuminori HANAOKA, Yoji SHIRASAWA, Masayuki SUGITA, Yasuyuki MIYAZAKI, Hiraku SAKAMOTO, Ryu FUNASE. Development of Deployment System for Small Size Solar Sail Mission, Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan, The Japan Society for Aeronautical and Space Sciences, Vol. 7, pp. 87-94, Nov. 2009.  Official location  
• Hiraku Sakamoto, K. C. Park, Yasuyuki Miyazaki. Evaluation of membrane structure designs using boundary web cables for uniform tensioning, Acta Astronautica, International Academy of Astronautics, Vol. 60, No. 10, pp. 846-857, May 2007.  Official location  
• Hiraku Sakamoto, Yasuyuki Miyazaki, K. C. Park. Finite element modeling of sail deformation under solar radiation pressure, Journal of Spacecraft and Rockets, American Institute of Aeronautics and Astronautics, Vol. 44, No. 3, pp. 514-521, May 2007.
• Hiraku Sakamoto, K. C. Park. Localized vibration isolation strategy for low- frequency excitations in membrane space structures, Journal of Vibration and Acoustics, American Society of Mechanical Engineers, Vol. 128, No. 6, pp. 673-802, Dec. 2006.  Official location  
• Hiraku Sakamoto, K. C. Park, Yasuyuki Miyazaki. Distributed and localized active vibration isolation in membrane structures, Journal of Spacecraft and Rockets, American Institute of Aeronautics and Astronautics, Vol. 43, No. 5, pp. 1107-1116, Sept. 2006.  Official location  
• Hiraku Sakamoto, K. C. Park, Yasuyuki Miyazaki. Dynamic wrinkle reduction strategies for cable suspended membrane structures, Journal of Spacecraft and Rockets, American Institute of Aeronautics and Astronautics, Vol. 42, No. 5, pp. 850-858, Sept. 2005.  Official location  
• Hiraku Sakamoto, M. C. Natori, Yasuyuki Miyazaki. Deflection of nulti-cellular inflatable tubes for redundant space structures, Journal of Spacecraft and Rockets, American Institute of Aeronautics and Astronautics, Vol. 39, No. 5, pp. 695-700, Sept. 2002.  Official location  

Book

• Shigeki SAITO, Hiraku Sakamoto, Yoko Takeda, Masanori Kado. エンジニアのためのデザイン思考入門, 株式会社翔泳社, Dec. 2017.
• Hiraku Sakamoto. Deployment Motions and Forces, Testing Large Ultra-Lightweight Spacecraft, Sept. 2017.
• Hiraku Sakamoto. CanSat─超小型模擬人工衛星─, オーム社, Aug. 2014.
• Yoji Shirasawa, Osamu Mori, Nobukatsu Okuizumi, Yasutaka Satou, Ayumu Yamasaki, Hiroshi Furuya, Tadashi Nishizawa, Hiraku Sakamoto, Go Ono. Evaluation of Sail Mechanics of IKAROS on its Slow-Spin and Reverse-Spin Operation, Advances in Solar Sailing, pp. 54-74, Feb. 2014.
• YASUKI SAEKI, Tetsuo Uenishi, Takayoshi Ogawa, Yuki ISHIHARA, DAISUKE HARADA, MASATOSHI TAMURA, TATSURO SATSUMA, Yoriko Kitagawa, リース・モートン, 時田アリソン, Lorinda Robertson KIYAMA, kunio Takayanagi, ISAO SATOH, SADAOKI FURUI, HIDEYA YUASA, Hiraku Sakamoto. 東工大英単, 研究社, Feb. 2011.

International Conference (Reviewed)

• Takumi Ohashi, Futo Noda, Takashi Tomura, Ampan Laosunthara, Koudai Suzuki, Yuno Tanaka, Maki Kishimoto, Rie Seto, Hiraku Sakamoto, Gia Khanh Tran, Atsushi Shirane. No Victim Left Behind: Developing a Dual-Use LEO Satellite System for Real-Time Population Mapping and Everyday Connectivity, ISCIT2024, IEEE, Sept. 2024.
• Hiraku Sakamoto, Takashi Tomura, Atsuki Ochi, Kazuki Nagai, Motoki Moritani, Gen Nakayama, Taichi Oshino. Space Demonstration of Two-layer Deployable Membrane Reflectarray Antenna with Popup Book Mechanism, AIAA SciTech Forum, Jan. 2024.
• Haruki Kurokawa, Gen Nakayama, Yuki Takeda, Takashi Tomura, Hiraku Sakamoto. Design of a Planar Beam-Tilt Array for Primary Radiators of CubeSat-Onboard Reflectarray, 2023 IEEE International Symposium On Antennas And Propagation (ISAP), Oct. 2023.
• Gen Nakayama, Motoki Moritani, Takashi Tomura, Hiraku Sakamoto, Shuhei Koike, Taichi Oshino, Yoshiki Mitsumoto, Kazuki Nagai, Sora Kanamaru, Takumi Sato, Haruki Kurokawa, Soma Saito, Atsuki Ochi, DELBURG PANES MITCHAO, Shinya Tamura, Yuki Takeda, Toranosuke Yanagi, Yuki Takeda, Koichi Kidani, Kota Toyoda, So Yeon Suk, Mitsuhiko Yasuhara, Koudai Suzuki, Riku Maeda, Sota Kume, Atsushi Shirane, Kenichi Okada. Space Demonstration of Two-layer Pop-up Origami Deployable Membrane Reflectarray, Small Satellite Conference 2023, Aug. 2023.
• Gen Nakayama, Haruki Kurokawa, Takashi Tomura, Hiraku Sakamoto. Design of 5.8-GHz-band Deployable Reflectarray, 2023 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM), July 2023.
• Dongwon You, Xi Fu, Hans Herdian, Xiaolin Wang, Yasuto Narukiyo, Ashbir Aviat Fadila, Hojun Lee, Michihiro Ide, Sena Kato, Zheng Li, Yun Wang, Daisuke Awaji, Jian Pang, Hiraku Sakamoto, Kenichi Okada, Atsushi Shirane. A Ka-Band 64-element Deployable Active Phased Array Transmitter on a Flexible Hetero Segmented Liquid Crystal Polymer for Small Satellites, IEEE MTT-S International Microwave Symposium (IMS), June 2023.
• Taichi Oshino, Motoki Moritani, Shuhei Koike, Shinji Takeda, Shinya Tamura, Kazuki Nagai, Sora Kanamaru, Takumi Sato, Gen Nakayama, Haruki Kurokawa, Yoshiki Mitsumoto, Atsuki Ochi, DELBURG PANES MITCHAO, Takashi Tomura, Hiraku Sakamoto. Deployment of Membrane Array Antenna in Space Using 3U CubeSat, OrigamiSat-2, 34th International Symposium on Space Technology and Science (ISTS), June 2023.
• Delburg Mitchao, Hiraku Sakamoto. Thermal Design Exploration For Active Phased Array Antennas On Space Deployable Membranes, 34th International Symposium on Space Technology and Science (ISTS), June 2023.
• Sora Kanamaru, Shinji Takeda, Yunosuke Saito, Yuta Takahashi, Dongwon You, Motoki Moritani, Shuhei Koike, Atsushi Shirane, Hiraku Sakamoto. Improvement of Beam Scanning Accuracy by Shape Estimation of Space Deployable Array-Antennas, 34th International Symposium on Space Technology and Science (ISTS), June 2023.
• Kazuki Nagai, Hiraku Sakamoto, Takashi Tomura, Shinya Tamura, Yuki Takeda. Evaluation of Deployed Shape of Two-layer Space Membrane Array Antenna, 34th International Symposium on Space Technology and Science (ISTS), June 2023.
• Motoki Moritani, Hiraku Sakamoto. Practical Application and Evaluation of System Complexity Index in the Development Process of Nano-Satellites, 34th International Symposium on Space Technology and Science (ISTS), June 2023.
• Takashi Tomura, Hiraku Sakamoto, Yuki Takeda, Gen Nakayama, Toranosuke Yanagi, Motoki Moritani, Shuhei Koike, Yuki Takeda, Shinya Tamura, Kazuki Nagai, Sora Kanamaru. Two-layer Pop-up Origami Deployable Membrane Reflectarray Antenna, Aug. 2022.
• Atsushi Shirane, Shinji Takeda, Yuta Takahashi, Dongwon You, Motoki Moritani, Yunosuke Saito, Shuhei Koike, Haruki Hagiwara, Shinya Tamura, Yuki Takeda, Kenichi Okada, Hiraku Sakamoto. Interdisciplinary Development of Spaceborne Phased-Array Transceiver on Deployable Membrane Structures, Small Satellite Conference, Aug. 2022.
• Xiaolin Wang, Dongwon You, Xi Fu, Hojun Lee, Zheng Li, Daisuke Awaji, Jian Pang, Atsushi Shirane, Hiraku Sakamoto, Kenichi Okada. A Flexible Implementation of Ka-band Active Phased Array for Satellite Communication, IEEE MTT-S International Microwave Symposium (IMS), June 2022.
• Yuta Takahashi, Hiraku Sakamoto, Shinichiro Sakai. Simultaneous Control of Relative Position and Absolute Attitude for Electromagnetic Spacecraft Swarm, AIAA 2021-1104, AIAA Guidance, Navigation, and Control Conference (GN&C), SciTech2021, AIAA, Jan. 2022.
• Takashi Tomura, Masato Machida, Hiraku Sakamoto. Simulation Results of a Foldable Reflectarray Composed of Four Triangular Notched Patches, Int. Symp. Antennas Propag., Oct. 2021.
• . Atsushi Shirane, Takashi Tomura, Hiraku Sakamoto, Kenichi Okada. Ultra-lightweight Deployable Antenna Membrane Technology for Future Non-terrestrial 6G Network and Earth Observation, Small Satellite Conference, Aug. 2021.
• Hiraku Sakamoto, HIROSHI FURUYA, Hiroki Nakanishi, Akihito Watanabe, Nobuyoshi Kawabata, Toshiyuki Hori, Hiroaki Ito, Takeshi Kuratomi, Yuya Shimoda, Nana Hidaka, Kazuki Watanabe. On-Orbit Demonstration of Innovative Multifunctional Membrane Structure for Ultra-Lightweight Solar Arrays and Array Antennas by 3U CubeSat OrigamiSat-1, Small Satellite Conference 2021, Aug. 2021.
• Tetsuya Kusumoto, Masanori Matsushita, Yuki Takao, Ahmed Kiyoshi Sugihara, Osamu Mori, Yasutaka Sato, Yasuyuki Miyazaki, Nobukatsu Okuizumi, Shigeo Kawasaki, Akihito Watanabe, Hiroaki Ito, Toshiyuki Hori, Kazuyuki Nakamura, Chihiro Hatakeyama, Takahiro Kuhara, Shuhei Yamada, Masahiro Fujita, Yuichiro Nada, Genki Ohira, Maiko Yamakawa, Kaoru Namiki, Yudai Kimishima, Kotaro Ikeda, Keiseuke Sugiura, Hideyuki Takahashi, Ayaka Fujita, Yuichiro Tsukamoto, Shinji Takeda, Hiraku Sakamoto, Atsushi Shirane, Kenichi Okada. Development of a Multifunctional Lightweight Membrane with a High Specific Power Generation Capacity, Small Satellite Conference,, Aug. 2021.
• Dongwon You, Yuta Takahashi, Shinji Takeda, Motoki Moritani, Haruki Hagiwara, Shuhei Koike, Hojun Lee, Yun Wang, Zheng Li, Jian Pang, Atsushi Shirane, Hiraku Sakamoto, Kenichi Okada. A Ka-Band 16-Element Deployable Active Phased Array Transmitter for Satellite Communication, IEEE MTT-S International Microwave Symposium (IMS), June 2021.
• T. Tomura, K. Omoto, H. Sakamoto. Simulation of a 5.8-GHz-band active reflectarray for non flat structures, IEEE Int. Symp. Antennas Propag. (AP-S), July 2020.
• B. Hohmann, Hiraku Sakamoto. Bending Stiffness Estimation of Creased Textile Membrane for Space Structure Design, AIAA Spacecraft Structures Conference, SciTech2020, Jan. 2020.
• B. Hohmann, Hiraku Sakamoto. Bending Stiffness Estimation of Creased Textile Membrane for Space Structure Design, AIAA Spacecraft Structures Conference, SciTech2020, Jan. 2020.
• Kosuke Ikeya, Hiraku Sakamoto, Koki Ho. Integrated Orbit Design and Network-Based Optimization of Interplanetary Mission Architectures, AIAA Spacecraft Structures Conference, SciTech2020, Jan. 2020.
• Keisuke Omoto, Takashi Tomura, Hiraku Sakamoto, JIRO HIROKAWA, MASAAKI OKUMA. Basic Study on Deformation Reconfiguration Technology for 5.8-GHz-band Reflectarray Antennas, PIERS, Dec. 2019.
• Takashi Tomura, Keisuke Omoto, Hiraku Sakamoto, Jiro Hirokawa. Design and Validation of a 5.8-GHz-band Active Reflectoarray on Nonflat Structures for CubeSats, ESA Antenna Workshop, Oct. 2019.
• Britta Hohmann, Hiraku Sakamoto, Masaaki Okuma. Influence of Storage Configurations on the Deployment Behavior of Boom-Membrane Integrated Space Structures, AIAA Spacecraft Structures Conference, SciTech2019, Jan. 2019.
• Towa Amamoto, Hiraku Sakamoto, Hiroshi Furuya, Nobukatsu Okuizumi, Akihito Watanabe, Nobuyuki Kawabata. Modeling of Composite Booms' Deployment Dynamics under Microgravity Based on Ground Tests, AIAA Spacecraft Structures Conference, SciTech2018, Jan. 2018.
• Takaomi Chubachi, Hiroshi Furuya, Hiraku Sakamoto. Undesired Equilibrium Configurations of Boom-Membrane Integrated Structure during Deploying Motion, AIAA Spacecraft Structures Conference, SciTech2018, Jan. 2018.
• Yuri Terada, Hiraku Sakamoto, Masaaki Okuma. Characteristics of Deployable Planar Origami Structures with Partial Constraints, Jan. 2018.
• Britta Hohmann, Hiraku Sakamoto, Hiroshi Furuya, Nobukatsu Okuizumi. Verification of Numerical Deployment Analysis for Membrane Structures Using Micro-gravity Experiment, AIAA Spacecraft Structures Conference, SciTech2018, Jan. 2018.
• Reo Kashiyama, Hiraku Sakamoto, Masaaki Okuma, Hiroaki Tanaka, Kosei Ishimura. Athermalization of Deformable Reflector's Actuators for Radio Astronomy Satellites, AIAA Spacecraft Structures Conference, SciTech2018, Jan. 2018.
• Nobukatsu Okuizumi, Yasutaka Satou, Osamu Mori, Hiraku Sakamoto, Hiroshi Furuya. Investigation of the Deformation and Stiffness of Spinning Solar Sail Membrane of IKAROS, AIAA SciTech2017, Jan. 2017.
• Hiroshi Furuya, Kyohei Yashima, Takashi Yokomatsu, Hiraku Sakamoto, Akihito Watanabe. Micro-gravity Testing of Boom-Membrane Integrated Deployable Structures for Micro-satellites, AIAA SciTech2017, Jan. 2017.
• Yuya Shimoda, Kazuki Watanabe, Nobuomi Sakamoto, Takeshi Kuratomi, Nana Hidaka, Mutsuhiro Ogawa, Hiraku Sakamoto, Hiroki Nakanishi. Development of Stereo Camera System for Accurate Observation of Deployable Membranes onboard CubeSat, AIAA SciTech2017, AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting, Jan. 2017.
• Hiraku Sakamoto, Hiroaki Tanaka, Kosei Ishimura, Akihiro Doi, Yusuke Kono, Naoko Matsumoto, Kimihiro Kimura. Shape-Control Experiment of Space Reconfigurable Reflector Using Antenna Reception Power, 3rd AIAA Spacecraft Structures Conference, SciTech2016, Jan. 2016.
• Hiroshi Furuya, Takashi Yokomatsu, Hiraku Sakamoto, Yasutaka Satou. Deployment Properties with Gravity Compensation Devices for Boom-Membrane Integrated Wrapped Structures, 3rd AIAA Spacecraft Structures Conference, SciTech2016, Jan. 2016.
• Tadashi Nishizawa, Hiraku Sakamoto. Shape Estimation and Design Methods for Membrane Structures to Achieve Appropriate Flatness, 3rd AIAA Spacecraft Structures Conference, SciTech2016, Jan. 2016.
• Yuya Shimoda, Kazuki Watanabe, Nobuomi Sakamoto, Takeshi Kuratomi, Yuki Naito, Hiraku Sakamoto, Masahiko Yamazaki. Development of Stereo Camera System for Accurate Observation of Large Deployable Membranes in Orbit, 3rd AIAA Spacecraft Structures Conference, SciTech2016, Jan. 2016.
• A. Inagaki, H. Sakamoto, H. Tanaka, K. Ishimura, M. Okuma. Experimental Study of Reflector Shape Control under Various Thermal Conditions, AIAA Science and Technology Forum and Exposition 2015, Jan. 2015.
• Hiraku Sakamoto, Hiroshi Furuya, Yasutaka Satou, Nobukatsu Okuizumi, Moto Takai, M. C. Natori. Wrapping Fold and Deployment Characteristics of Boom-Membrane Integrated Space Structures, 2nd AIAA Spacecraft Structures Conference, SciTech2015, Jan. 2015.
• Yasutaka Satou, Osamu Mori, Nobukatsu Okuizumi, Yoji Shirasawa, Hiroshi Furuya, Hiraku Sakamoto. Deformation Properties of Solar Sail IKAROS Membrane with Nonlinear Finite Element Analyses, 2nd AIAA Spacecraft Structures Conference, SciTech2015, Jan. 2015.
• H. Furuya, Y. Satou, H. Sakamoto, M. C. Natori. Deployment Dynamics of Membrane-Boom Wrapped Structures, 65th International Astronautical Congress, Sept. 2014.
• Tadashi Nishizawa, Hiraku Sakamoto, M. Okuma, H. Furuya, Y. Satou, N. Okuizumi, Y. Shirawasa, O. Mori. Evaluation of Crease Effects on Out-of-plane Stiffness of Solar Sails, 29th International Symposium on Space Technology and Science (ISTS), June 2014.
• Hiraku Sakamoto, S. Kadonishi, Y. Satou, H. Furuya, Y. Shirasawa, N. Okuizumi, O. Mori, J. Matsumoto, M. C. Natori, Y. Miyazaki, M. Okuma. Repeatability of Stored Configuration of a Large Solar Sail with Non-negligible Thickness, 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, AIAA, Apr. 2014.
• Y. Satou, N. Okuizumi, H. Sakamoto, H. Furuya, G. Ono, Y. Shirasawa, O. Mori. Nonflatness of Solar Sail Membrane Predicted by Nonlinear Finite Element Method, 2014 AIAA Science and Technology Forum and Exposition (SciTech 2014), Jan. 2014.
• H. Sakamoto, M. C. Natori, S. Kadonishi, M. Okuma. Folding Patterns of Planar Gossamer Space Structures Consisting of Membranes and Booms, 23rd International Conference on Adaptive Structures and Technologies, Oct. 2012.
• H. Sakamoto, N. Kogiso, H. Tanaka, K. Ishimura, M. Okuma. Finite-Element Model Updating for Highly Precise Tension-Stabilized Space Reflectors, 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, Proceedings of 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, AIAA, Apr. 2012.
• Koji Yamada, Yuya Sudo, Shuhei Toki, Yuya Kakehashi, Hiraku Sakamoto, Naohiko Kohtake, Seiko Shirasaka. Practical Application of Systems Engineering to Cansat Project - Operation of PBL-type Educational Program in Seven Universities in Japan -, 28th International Symposium on Space Technology and Science, June 2011.  Official location  
• Hiraku Sakamoto, Yuuki Okada, Nozomu Kogiso. Finite Element Model Updating for Tension-Stabilized Flexible Space Structures, 28th International Symposium on Space Technology and Science, June 2011.  Official location  
• Osamu Mori, Yoji Shirasawa, Yasuyuki Miyazaki, M. Hasome, Yuuichi Tsuda, Ryu Funase, T. Saiki, R. Jifuku, Hirotaka Sawada, Nobukatsu Okuizumi, Hiraku Sakamoto. Attitude Control Dynamics of Spinning Solar Power Sail, IKAROS, 28th International Symposium on Space Technology and Science, June 2011.  Official location  
• Yasuyuki Miyazaki, Hiraku Sakamoto, Yoji Shirasawa, Osamu Mori, Hirotaka Sawada, Masahiko Yamazaki. Finite Element Analysis of Deployment of Sail Membrane of IKAROS, 28th International Symposium on Space Technology and Science, June 2011.  Official location  
• Yoji Shirasawa, Osamu Mori, Yasuyuki Miyazaki, Hiraku Sakamoto, M. Hasome, Nobukatsu Okuizumi, Hirotaka Sawada, Saburo Matunaga, Hiroshi Furuya, Junichiro Kawaguchi. Evaluation of Membrane Dynamics of IKAROS Based on Flight Result and Simulation Using Multi-Particle Model, 28th International Symposium on Space Technology and Science, June 2011.  Official location  
• Hirotaka Sawada, Osamu Mori, Nobukatsu Okuizumi, Yoji Shirasawa, Yasuyuki Miyazaki, M. C. Natori, Saburo Matunaga, Hiroshi Furuya, Hiraku Sakamoto. Evaluation of Solar Power Sail Deployment Mechanism of IKAROS, 28th International Symposium on Space Technology and Science, June 2011.  Official location  
• Hiraku Sakamoto, Naohiko Kohtake, Seiko Shirasaka, Koji Yamada, YuyaSudo, Shuhei Toki, Yuya Kakehashi. Introduction of Systems Engineering to Cansat Project - Construction of PBL-type Educational Program -, 28th International Symposium on Space Technology and Science, June 2011.  Official location  
• Yoji Shirasawa, Osamu Mori, Yasuyuki Miyazaki, Hiraku Sakamoto, M. Hasome, Nobukatsu Okuizumi, Hirotaka Sawada, Hiroshi Furuya, Saburo Matunaga, M. C. Natori. Analysis of Membrane Dynamics Using Multi-Particle Model for Solar Sail Demonstrator "IKAROS", 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, Apr. 2011.  Official location  
• Yasuyuki Miyazaki, Yoji Shirasawa, Osamu Mori, Hirotaka Sawada, Nobukatsu Okuizumi, Hiraku Sakamoto, Saburo Matunaga, Hiroshi Furuya, M. C. Natori. Conserving Finite Element Dynamics of Gossamer Structure and Its Application to Spinning Solar Sail "IKAROS", 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, Apr. 2011.  Official location  
• Hiraku Sakamoto, Yoji Shirasawa, Hirotaka Sawada, Daisuke Haraguchi, Osamu Mori. A Spin-up Control Scheme for Contingency Deployment of the Sailcraft IKAROS, 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, Apr. 2011.  Official location  
• Nobukatsu Okuizumi, Azusa Muta, Saburo Matunaga, Hiraku Sakamoto, Yoji Shirasawa, Osamu Mori. Small-scale Experiments and Simulations of Centrifugal Membrane Deployment of Solar Sailcraft 'IKAROS', 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, Apr. 2011.  Official location  
• Hirotaka Sawada, Osamu Mori, Nobukatsu Okuizumi, Yoji Shirasawa, Yasuyuki Miyazaki, M. C. Natori, Saburo Matunaga, Hiroshi Furuya, Hiraku Sakamoto. Mission Report on the Solar Power Sail Deployment Demonstration of IKAROS, 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, Apr. 2011.  Official location  
• Osamu Mori, Yoji Shirasawa, Yasuyuki Miyazaki, Hiraku Sakamoto, M. Hasome, Nobukatsu Okuizumi, Hirotaka Sawada, Hiroshi Furuya, Saburo Matunaga, M. C. Natori, Junichiro Kawaguchi. Deployment and Steering Dynamics of Spinning Solar Sail 'IKAROS', 21st International Symposium on Space Flight Dynamics, Feb. 2011.  Official location  
• D. Haraguchi, H. Sakamoto, Y. Shirasawa, O. Mori. Design criteria for spin deployment of gossamer structures considering nutation dynamics, AIAA Guidance, Navigation, and Control Conference, American Institute of Aeronautics and Astronautics, Aug. 2010.
• Y. Shirasawa, O. Mori, N. Okuizumi, H. Sawada, Y. Miyazaki, H. Sakamoto, H. Furuya, S. Matsunaga. Analysis on Membrane Deployment Dynamics of Solar Power Sail "IKAROS", The Second International Symposium on Solar Sailing, The Second International Symposium on Solar Sailing, July 2010.
• Hirotaka SAWADA, Osamu MORI, Nobukatsu OKUIZUMI, Yoji SHIRASAWA, HIraku SAKAMOTO, HIROSHI FURUYA, Saburo MATUNAGA, Yasuyuki MIYAZAKI. Report on Deployment Solar Power Sail Mission of IKAROS, The Second International Symposium on Solar Sailing, The Second International Symposium on Solar Sailing, July 2010.
• H. Sakamoto, Y. Miyazaki, O. Mori. Finite Element Dynamic Analysis of Solar Sail Deployment, 27th International Symposium on Space Technology and Science, July 2009.
• H. Sakamoto, Y. Miyazaki, O. Mori. Transient Dynamic Analysis of Gossamer Appendage Deployment Using Nonlinear Finite Element Method, 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Material Conference, American Institute of Aeronautics and Astronautics, May 2009.
• R.Kloepper, H.Sakamoto, M.Okuma. Experimental identification of rigid body inertia properties using low-frequency unbalance excitation., 50th ASME Structural Dynamics Conference, May 2009.

Domestic Conference (Reviewed)

• Hiraku Sakamoto, Y. Nakamura, S. Narita, Y. Kakehashi, R. Konishi, S. Shirasaka, N. Kohtake. Education of Mission Conception and SE Methodology through Simulated-Satellite Design Contest for Students, Asia-Pacific Council on Systems Engineering Conference (APCOSEC) 2013, Sept. 2013.
• M. C. Natori, N. Katsumata, H. Yamakawa, Hiraku Sakamoto, N. Kishimoto. Conceptual Model Study Using Origami for Membrane Space Structures, ASME 2013 International Design Engineering Technical Conferences & Computers and and Information in Engineering Conference (IDETC/CIE 2013), Aug. 2013.
• 澤田弘崇, Osamu Mori, 奥泉信克, 白澤洋次, Yasuyuki Miyazaki, M. C. Natori, Saburo Matunaga, HIROSHI FURUYA, Hiraku Sakamoto. IKAROSセイル展開ミッションの軌道上結果について, Proceedings of 54th Space Sciences and Technology Conference, Proceedings of 54th Space Sciences and Technology Conference, The Japan Society for Aeronautical and Space Sciences, 2S06, pp. 1-6, Nov. 2010.  Official location  
• 神武直彦, Hiraku Sakamoto, 白坂成功, 山田皓司, 須藤雄哉, 土岐周平, 梯友哉. Cansat開発におけるシステムズ・エンジニアリングの適用 ～PBL型教育プログラムの構築～, Proceedings of 54th Space Sciences and Technology Conference, Proceedings of 54th Space Sciences and Technology Conference, The Japan Society for Aeronautical and Space Sciences, 3E05, Nov. 2010.  Official location  
• 山田皓司, 須藤雄哉, 土岐周平, 梯友哉, Hiraku Sakamoto, 神武直彦, 白坂成功. Cansat開発におけるシステムズ・エンジニアリングの実践 ～全国7大学におけるPBL型教育プログラムの実践～, Proceedings of 54th Space Sciences and Technology Conference, Proceedings of 54th Space Sciences and Technology Conference, The Japan Society for Aeronautical and Space Sciences, 3E06, Nov. 2010.  Official location  
• 田中宏明, 森島駿一, Yuuki Okada, 池田忠繁, Hiraku Sakamoto, 秋田剛, 荻芳郎, 石村康生, 樋口健. スマート構造システムの低温低圧環境試験, Proceedings of 54th Space Sciences and Technology Conference, Proceedings of 54th Space Sciences and Technology Conference, The Japan Society for Aeronautical and Space Sciences, 1K06, Nov. 2010.  Official location  

International Conference (Not reviewed / Unknown)

• Osamu Mori, Masanori Matsushita, Ahmed Kiyoshi Sugihara, Yuki Takao, Toshihiro Chujo, Yasuyuki Miyazaki, Yasutaka Satou, Nobukatsu Okuizumi, Hiraku Sakamoto, Ryu Funase, Naoya Ozaki, Yuki Kubo, Akihito Watanabe. New Solar Power Sail Program in the Post-OKEANOS Era, The 6th International Symposium on Space Sailing, June 2023.
• Yuki Takeda, Shinji Takeda, Shuhei Koike, Yuta Takahashi, Motoki Moritani, Haruki Hagiwara, Dongwon You, Atsushi Shirane, Hiraku Sakamoto. Thermal Control of Array Antenna Transmitters Attached on Space Membrane Structures, 33rd International Symposium on Space Technology and Science (ISTS), Mar. 2022.
• Shuhei Koike, Motoki Moritani, Misato Ishiwata, Shinya Tamura, Kazuki Nagai, Hiraku Sakamoto, Hiroki Nakanishi, Takashi Tomura, HIROSHI FURUYA, Akihito Watanabe. Revival and Successive Operation of 3U CubeSat OrigamiSat-1 with Multifunctional Deployable Membrane, 33rd International Symposium on Space Technology and Science, Feb. 2022.
• M. Kato, H. Sakamoto, T. Tomura, M. Okuma. Phase Adjustment Algorithm for Deformation Compensation of Nonflat Reflectarray Antenna, International Symposium on Antennas and Propagation (ISAP2020), IEEE, 2022.  Official location  
• H. Hagiwara, H. Sakamoto, S. Fukuda. SAR Image Registration over Forested Areas Using Linear Features Detection, International Conference on Emerging Technologies for Communications, Institute of Electronics, Information and Communication Engineers, Dec. 2021.
• Yuki Takao, Osamu Mori, Masanori Matsushita, Ahmed Kiyoshi Sugihara, Akihito Watanabe, Toshihiro Chujo, Nobukatsu Okuizumi, Yasuyuki Miyazaki, Yasutaka Satou, Hiraku Sakamoto, Hiroshi Furuya, Nobuo Kenmochi. Technological Advances in a Solar Power Sail for Deep Space Exploration, ISAS Planetary Exploration Workshop 2021, Sept. 2021.
• R. Masiero, B. Hohmann, H. Sakamoto. Experimental Evaluation and Multi-scale Analysis of Woven Textile Membranes for Innovative Space Deployable Structures, Aerospace Europe Conference 2020, Feb. 2020.
• Hiraku Sakamoto. Origami Membrane Deployable Structures Integrated with Thin-Film Electric Devices, Finnish Satellite Workshop and Remote Sensing Days, Jan. 2020.
• Kosuke Ikeya, Hiraku Sakamoto. Significance of 3U CubeSat OrigamiSat-1 for Space Demonstration of Multifunctional Deployable Membrane, 70th International Astronautical Congress, Oct. 2019.
• Shogo Kadonishi, Hiraku Sakamoto, Masaaki Okuma. Compact Packaging of Planar Gossamer Space Structures Using Textile Membranes, 32nd International Symposium on Space Technology and Science (ISTS), June 2019.
• Taiga Zengo, Masahiko Yamazaki, Hiraku Sakamoto, Keiko Shimazu. Model-Based Systems Engineering Education with Hands-on Activities Using HEPTA-Sat, 32nd International Symposium on Space Technology and Science (ISTS), June 2019.
• Takaomi Chubachi, Hiroshi Furuya, Hiraku Sakamoto. Deployability of Boom-Membrane Integrated Structure on OrigamiSat-1, 32nd International Symposium on Space Technology and Science (ISTS), June 2019.
• Ayako Torisaka, Daisuke Hayashi, Shigeo Kawasaki, Naoki Nishii, Yuri Terada, Shotarou Yokoyama, Hiraku Sakamoto. Development of shape monitoring system using SMA dipole antenna on a deployable membrane structure, 69th International Astronautical Congress (IAC), Oct. 2018.
• Hiroshi Furuya, Hiraku Sakamoto, Akihito Watanabe. Deployment Properties of Boom-Membrane Integrated Space Structures, 34th International Symposium on Space Technology and Science (ISTS), June 2017.
• Hiraku Sakamoto, Hiroki Nakanishi, Hiroshi Furuya, Masahiko Yamazaki, Yasuyuki Miyazaki, Akihito Watanabe, Kazuki Watanabe, Ayako Torisaka. Development of CubeSat OrigamiSat-1 for Space Demonstration of Deployable Membrane Structure Technologies, 34th International Symposium on Space Technology and Science (ISTS), June 2017.
• Kazuya SAITO, Nobukatsu OKUIZUMI, Hiraku SAKAMOTO, Junji KIKUCHI. Experimental Research on Roll-up Storage Method for a Large Solar Sail, 4th International Symposium on Solar Sailing, Jan. 2017.
• Hiroshi FURUYA, Hiraku SAKAMOTO, Yasutaka SATOU, Takashi YOKOMATSU, Kyohei YASHIMA, Takaomi CHUBACHI, Akihito WATANABE. Boom/Membrane Integrated Deployable Space Structures for Small Satellites, 4th International Symposium on Solar Sailing, Jan. 2017.
• Hiroki NAKANISHI, Hiraku SAKAMOTO, Hiroshi FURUYA, Masahiko YAMAZAKI, Yasuyuki MIYAZAKI, Akihito WATANABE, Kazuki WATANABE, Ayako TORISAKA-KAYABA, Mitsushige ODA. Development of Nano-Satellite OrigamiSat-1with Highly Functional Deployable Membrane, 4th International Symposium on Solar Sailing, Jan. 2017.
• Kazuaki Hayasaki, Hiraku Sakamoto, Hiroaki Tanaka, Kosei Ishimura, MASAAKI OKUMA. Design and Analysis of Smart Space Reflectors Driven by Piezoelectric Actuators, 26th International Conference on Adaptive Structures and Technologies, Oct. 2015.
• Hiraku Sakamoto, Hiroaki Tanaka, Kosei Ishimura, Akihiro Doi, Yusuke Kono. Shape Control Experiment of Space Reflector for Extremely High Frequency Radio Astronomy, 26th International Conference on Adaptive Structures and Technologies, Oct. 2015.
• Hiraku Sakamoto, Hiroki Nakanishi, Masahiko Yamazaki, Yasuyuki Miyazaki, Hiroshi Furuya, Akihito Watanabe, Kazuki Watanabe, M. Oda. CubeSat Design for Space Demonstration of Deployable Membrane Structure Technologies, 34th International Symposium on Space Technology and Science, July 2015.
• T. Okabe, N. Kogiso, H. Sakamoto, H. Tanaka. Finite Element Updating for High Precision Space Reflector Model Using Multiobjective Optimization, 34th International Symposium on Space Technology and Science, July 2015.
• Kouta Gotou, Hiraku Sakamoto, Akiya Inagaki, Hiroaki Tanaka, Kosei Ishimura, Masaaki Okuma. Actuator Design for Space Smart Reflector to Reduce Thermal Distortion, 34th International Symposium on Space Technology and Science, July 2015.
• ISHIMURA Kosei, KAWACHI Taisuke, TANAKA Hiroaki, SAKAMOTO Hiraku, TANAKA Koji, YAMAKAWA Hiroshi. Orbit Design and Control of Satellite around the L2 Point Using Tethered Anchor System, 34th International Symposium on Space Technology and Science, July 2015.
• Hiraku Sakamoto, Yuya Nakamura. Lessons Learned in Student CanSat Development Contest Envisioning Future Engineering Systems, 34th International Symposium on Space Technology and Science, July 2015.
• Hiroshi Furuya, Yasutaka Satou, Hiraku Sakamoto, Moto Takai, Nobukatsu Okuizumi, M. C. Natori, Ayako Torisaka, T. Yokomatsu, H. Kurashige, Akihito Watanabe. Deployment Experiments of Wrapping Fold Boom-Membrane Integrated Space Structures for De-Orbiting Satellites, 34th International Symposium on Space Technology and Science, July 2015.
• H. Sakamoto, H. Furuya, Y. Satou, M. C. Natori, A. Watanabe, N. Kawabata, R. Sakai, N. Okuizumi, O. Mori, Y. Shirasawa, M. Takai, N. Katsumata, A. Torisaka, R. Funase. Origami-based Membrane Storage and Deployment Technology for De-orbiting Satellites, 64th International Aeronautical Congress, Sept. 2013.
• D. Pastor, H. Sakamoto, X. Shuyin, M. Okuma. Numerical Simulation of Gossamer Structures Consisting of Membranes and Booms, 5th Multidisciplinary International Student Workshop in Tokyo Tech, Aug. 2013.
• T. Ito, Y. Sugimoto, H. Sakamoto, N. Kohtake, Shirasaka Seiko, S. Narita. Lessons Learned in Systems Engineering Education for Students' CanSat Projects, UN/Japan Nano-Satellite Symposium, Oct. 2012.
• Osamu Mori, H. Sawada, J. Kawaguchi, Y. Shirasawa, M. Sugita, Yasuyuki Miyazaki, Hiraku Sakamoto. Development of Deployment System for Small Size Solar Sail Mission, 26th International Symposium on Space Technology and Science (ISTS), June 2009.
• Hiraku Sakamoto. Geometrically Nonlinear Analyses of Wave Propagation in Non-Uniformly Pre-Tensioned Membranes, 26th International Symposium on Space Technology and Science (ISTS), June 2009.

Domestic Conference (Not reviewed / Unknown)

• Hiroki Hayashi, Dongwon You, Xi Fu, Hans Herdian, Xiaolin Wang, Yasuto Narukiyo, Hiraku Sakamoto, Kenichi Okada, Atsushi Shirane. 液晶ポリマー基板を用いた小型衛星搭載用展開型フェーズドアレイ送信機, 電子情報通信学会 総合大会, Mar. 2024.
• Koudai Suzuki, Haruki Kurokawa, Gen Nakayama, Hiraku Sakamoto, Takashi Tomura. Design of deployable linear-to-circular polarization conversion reflectarray antennas for small satellites, 信学総大, Mar. 2024.
• Haruki Kurakawa, Kodai Suzuki, Gen Nakayama, Hiraku Sakamoto, Takashi Tomura. Unwanted radiation suppression design of a beam tilt array by inner layer feeding, 信学総大, Mar. 2024.
• Hiraku Sakamoto, Hiroki Nakanishi, Motoki Moritani. Utilization of 3U CubeSat OrigamiSat-1 Lessons Learned in Development of Successor Satellite, 第 67 回宇宙科学技術連合講演会講演集, pp. 1-4, Oct. 2023.
• Hiraku Sakamoto, Takashi Tomura, Motoki Moritani, DELBURG PANES MITCHAO, Yuki Takeda, Kazuki Nagai, Sora Kanamaru, Gen Nakayama, Taichi Oshino, Takumi Sato, Yoshiki Mitsumoto, Soma Saito, Haruki Kurokawa, Koichi Kidani, Kota Toyoda, So Yeon Suk, Mitsuhiko Yasuhara, Atsuki Ochi, Sota Kume, Atsushi Shirane, Kenichi Okada. 折り紙構造による超高利得展開リフレクトアレーアンテナ技術の宇宙実証キューブサットOrigamiSat-2, 宇宙科学技術連合講演会, Oct. 2023.
• Masanori Matsushita, 高尾 勇輝, Ahmed Kiyoshi Sugihara, 森 治, 楠本 哲也, 藤田 雅大, 中川 雄登, 大木 春仁, 西村 尚, 保田 瞬, 渡邊 秋人, 堀 利行, 伊藤 裕明, Yasutaka Satou, 宮崎 康行, 奥泉 信克, 大月 幸穂, 鶴谷 柊朔, 中川 果帆, 米田 大晟, 芝田 朋世, 山川 真以子, Sora Kanamaru, Motoki Moritani, Kazuki Nagai, Yuki Takeda, Hiraku Sakamoto, Atsushi Shirane, Kenichi Okada, 松下 将典. 発電・アンテナ機能を有する軽量膜展開構造物HELIOS-Rの開発状況, 宇宙科学技術連合講演会, Oct. 2023.
• Soma Saito, Hiraku Sakamoto. 超小型人工衛星の地上試験・保守を容易化する構造設計手法の提案, 日本設計工学会2023年度春季大会研究発表講演会, May 2023.
• 嶋津恵子, Hiraku Sakamoto, 山崎政彦. MBSE実践企業のシステム設計の最初の一歩の共通特徴, 日本設計工学会2023年度春季大会研究発表講演会, May 2023.
• Yuki Takeda, Takashi Tomura, Hiraku Sakamoto. Design of Reconfigurable Reflectarray Antennas on Flexible Substrate with Varactor Diodes Mounted on Slot-Coupled Microstrip Lines, 信学技報, Vol. 122, No. 441, pp. 93~96, Mar. 2023.
• Masanori Matsushita, 高尾 勇輝, Ahmed Kiyoshi Sugihara, Osamu Mori, 楠本 哲也, 大平 元希, 杉浦 圭佑, 藤田 雅大, 中川 雄登, 西村 尚, 大木 春仁, Akihito Watanabe, 堀 利行, 伊藤 裕明, Yasutaka Satou, Yasuyuki Miyazaki, 奥泉 信克, Kazuyuki Nakamura, 久原 隆博, 畠山 千尋, 山川 真以子, 鈴木 賢, 高崎 健太郎, 保田 瞬, Sora Kanamaru, Kazuki Nagai, Motoki Moritani, Shuhei Koike, Hiraku Sakamoto, Atsushi Shirane, Kenichi Okada. 発電・アンテナ機能を有する軽量膜展開構造物HELIOSと軽量薄膜太陽電池パドルの開発状況, 宇宙科学シンポジウム, Jan. 2023.
• Haruki Kurokawa, Gen Nakayama, Yuki Takeda, Takashi Tomura, Hiraku Sakamoto. 超小型衛星搭載リフレクトアレーアンテナ一次放射器用プリント基板ビームチルトアレーの設計, 2023.
• 佐藤 匠, 山崎 政彦, Hiraku Sakamoto, 嶋津 恵子. 超小型人工衛星キットを用いたシステムズエンジニアリング教育の提案と実践, 第31回スペース・エンジニアリング・コンファレンス[SEC'22], 日本機械学会, Dec. 2022.
• Kazuki Nagai, Hiraku Sakamoto, Takashi Tomura, Shinya Tamura, Yuki Takeda. 超小型衛星に搭載する二層型宇宙膜面アレーアンテナの開発, 第31回スペース・エンジニアリング・コンファレンス[SEC'22], 日本機械学会, Dec. 2022.
• DELBURG PANES MITCHAO, Hiraku Sakamoto, Yuki Takeda, Atsushi Shirane. Thermal Design of Space-based Phased Array Transceiver Systems on Deployable Membranes, 第31回スペース・エンジニアリング・コンファレンス[SEC'22], 日本機械学会, Dec. 2022.
• Atsuki Ochi, Shinya Tamura, Kazuki Nagai, Hiraku Sakamoto. 宇宙展開膜における膜上デバイスの縫い付けによる搭載方法の検討, 第31回スペース・エンジニアリング・コンファレンス[SEC'22], 日本機械学会, Dec. 2022.
• Hiroaki Tanaka, Nozomu Kogiso, 岩佐 貴史, Hiraku Sakamoto, 池田 忠繁, 勝又 暢久, 岸本 直子, 樋口 健. 成層圏気球実験に向けた形状可変鏡システムの低温環境動作特性評価, 第66回宇宙科学技術連合講演会, Nov. 2022.
• Shinya Tamura, Kazuki Nagai, Takashi Tomura, Hiraku Sakamoto. アンテナ面とグラウンド面の二層を有する膜面アンテナの収納・展開, 第66回宇宙科学技術連合講演会, Nov. 2022.
• Shuhei Koike, Hiraku Sakamoto. 超小型衛星搭載ブーム・膜面展開機構の小型化・高剛性化, 第66回宇宙科学技術連合講演会, Nov. 2022.
• Akihito Watanabe, ryoji sakai, 堀 利行, 伊藤 裕明, Masanori Matsushita, Ahmed Kiyoshi Sugihara, 高尾 勇輝, Osamu Mori, Yasutaka Satou, Yasuyuki Miyazaki, Shigeo Kawasaki, 奥泉 信克, Hiraku Sakamoto, Atsushi Shirane, Kenichi Okada. 発電･アンテナ機能を有する軽量膜展開構造物の開発と運用準備状況, 宇宙科学技術連合講演会, Nov. 2022.
• Hiraku Sakamoto, Shuhei Koike, Motoki Moritani, Misato Ishiwata, Kazuki Nagai, Shinya Tamura, Takaomi Chubachi, Hiroki Nakanishi, Yuki Takeda, Gen Nakayama, Takashi Tomura, HIROSHI FURUYA, Yuya Shimoda, Akihito Watanabe. 3UキューブサットOrigamiSat-1多機能展開膜の軌道上展張形状に関する考察, 第66回宇宙科学技術連合講演会, Nov. 2022.
• Yuki Takeda, Takashi Tomura, Hiraku Sakamoto. Reflection Phase Control by Varactor Diodes for Reflectarray Antennas on Flexible Substrate, 信学技報, Sept. 2022.
• Kazuki Nagai, Hiraku Sakamoto, Shinya Tamura, Takashi Tomura, Yuki Takeda. 二層型宇宙膜面アレーアンテナの展開形状評価, 日本機械学会2022年度年次大会, Sept. 2022.
• Sora Kanamaru, Shinji Takeda, Yunosuke Saito, Yuta Takahashi, Dongwon You, Motoki Moritani, Shuhei Koike, Haruki Hagiwara, Shinya Tamura, Yuki Takeda, Atsushi Shirane, Hiraku Sakamoto. 宇宙展開アレーアンテナの形状推定によるビーム走査精度の向上, 日本機械学会2022年度年次大会, Sept. 2022.
• 山崎政彦, Hiraku Sakamoto, 嶋津恵子, 佐藤匠. 衛星キットハンズオンによるMBSE教育の実践と教訓－衛星システムの設計・開発の体験型教育と実践－, 工学教育研究講演会, Sept. 2022.
• Dongwon You, Yuta Takahashi, Shinji Takeda, Motoki Moritani, Haruki Hagiwara, Shuhei Koike, Hojun Lee, Yun Wang, Zheng Li, Jian Pang, Atsushi Shirane, Hiraku Sakamoto, Kenichi Okada. A Ka-Band 16-Element Deployable Active Phased Array Transmitter for Satellite Communication, 電子情報通信学会 LSIとシステムのワークショップ, May 2022.
• Yuki Takeda, Takashi Tomura, Hiraku Sakamoto. Reflection Phase Control of Reflectarray Composed of Single Flexible Substrate, 信学総大, Mar. 2022.
• Masanori Matsushita, 高尾 勇輝, Ahmed Kiyoshi Sugihara, Osamu Mori, 楠本 哲也, 大平 元希, 杉浦 圭佑, 藤田 雅大, 池田 宏太朗, 渡邊 秋人, 堀 利行, 伊藤 裕明, Yasutaka Satou, 奥泉 信克, 宮崎 康行, Kazuyuki Nakamura, 久原 隆博, 畠山 千尋, 藤田 彩花, 山田 修平, 山川 真以子, 名田 悠一郎, 竝木 芳, 鈴木 賢, 高崎 健太郎, 保田 瞬, Shinji Takeda, Motoki Moritani, Shuhei Koike, Hiraku Sakamoto, Atsushi Shirane, Kenichi Okada. 発電・アンテナ機能を有する軽量膜展開構造物HELIOSの開発と運用計画, 宇宙科学シンポジウム, Jan. 2022.
• Hiraku Sakamoto, Atsushi Shirane, Kenichi Okada, Shinji Takeda, Dongwon You, Yuta Takahashi, Motoki Moritani, Shuhei Koike, Haruki Hagiwara, Yuki Takeda, Shinya Tamura, Yuta Ando, Kazuki Nagai, Sora Kanamaru, Masanori Matsushita, 高尾 勇輝, Ahmed Kiyoshi Sugihara, Osamu Mori, 楠本 哲也, 大平 元希, 杉浦 圭佑, 藤田 雅大, 渡邊 秋人, 堀 利行, 伊藤 裕明. 非平面を許容する膜面フェーズドアレーアンテナの宇宙実証, 宇宙科学シンポジウム, Jan. 2022.
• Motoki Moritani, Hiraku Sakamoto, MASAAKI OKUMA. 超小型人工衛星の開発手法と信頼性の相関事例分析, 第30回スペース・エンジニアリング・コンファレンスSEC'21, 日本機械学会, Dec. 2021.
• Shinji Takeda, Hiraku Sakamoto, MASAAKI OKUMA. テザー伸展式宇宙太陽風セイルの動力学解析, 第30回スペース・エンジニアリング・コンファレンスSEC'21, 日本機械学会, Dec. 2021.
• Motoki Moritani, Yuta Takahashi, Haruki Hagiwara, Yuta Ando, Shinji Takeda, Atsushi Shirane, Hiraku Sakamoto. 多機能膜面構造上の半導体デバイスの放射線対策の提案・評価, 第65回宇宙科学技術連合講演会, 日本航空宇宙学会, Nov. 2021.
• Masanori Matsushita, 高尾 勇輝, 宮崎 康行, 渡邊 秋人, 伊藤 裕明, 堀 利行, 畠山 千尋, 久原 隆博, 楠本 哲也, 藤田 雅大, 山田 修平, 名田 悠一郎, 大平 元希, 山川 真以子, 竝木 芳, 池田 宏太朗, 杉浦 圭佑, 藤田 彩花, 高尾 勇輝, 佐藤 泰貴, 宮崎 康行, 渡邊 秋人, 伊藤 裕明, 堀 利行, 畠山 千尋, 久原 隆博, 楠本 哲也, 藤田 雅大, 山田 修平, 名田 悠一郎, 大平 元希, 山川 真以子, 竝木 芳, 池田 宏太朗, 杉浦 圭佑, 藤田 彩花, 藤田 雅大, 山田 修平, 名田 悠一郎, 大平 元希, 山川 真以子, 竝木 芳, 池田 宏太朗, 杉浦 圭佑, 藤田 彩花, 高尾 勇輝, Yasutaka Satou, Yasuyuki Miyazaki, 渡邊 秋人, 伊藤 裕明, 堀 利行, 畠山 千尋, 楠本 哲也, 久原 隆博, 藤田 雅大, 山田 修平, 名田 悠一郎, 大平 元希, 山川 真以子, 竝木 芳, 池田 宏太朗, 杉浦 圭佑, 藤田 彩花, 高尾 勇輝, Ahmed Kiyoshi Sugihara, Osamu Mori, 佐藤 泰貴, 宮崎 康行, 奥泉 信克, Shigeo Kawasaki, 渡邊 秋人, 伊藤 裕明, 堀 利行, Kazuyuki Nakamura, 畠山 千尋, 久原 隆博, 楠本 哲也, 藤田 雅大, 山田 修平, 名田 悠一郎, 大平 元希, 山川 真以子, 竝木 芳, 池田 宏太朗, 杉浦 圭佑, 藤田 彩花, Shinji Takeda, Hiraku Sakamoto, Atsushi Shirane, Kenichi Okada. 発電・アンテナ機能を有する軽量膜展開構造物HELIOSの技術詳細, 宇宙科学技術連合講演会, Nov. 2021.
• 渡邊 秋人, 酒井 良次, 堀 利行, 伊藤 裕明, Masanori Matsushita, Ahmed Kiyoshi Sugihara, 高尾 勇輝, Osamu Mori, 佐藤 泰貴, Yasuyuki Miyazaki, 奥泉 信克, Shigeo Kawasaki, Hiraku Sakamoto, Atsushi Shirane, Kenichi Okada. 発電･アンテナ機能を有する軽量膜展開構造物の軌道上実証と開発状況, 宇宙科学技術連合講演会,, Nov. 2021.
• Hiraku Sakamoto, Takashi Tomura, Atsushi Shirane, Kenichi Okada. 折り紙技術を用いた展開式・非平面膜面アレーアンテナの宇宙実証, 第65回宇宙科学技術連合講演会, 日本航空宇宙学会, Nov. 2021.
• Shinya Tamura, Hiraku Sakamoto, Takashi Tomura. 「飛び出す絵本の機構を用いた宇宙展開膜面アレーアンテナ構造の提案, 2021年度日本航空宇宙学会年次大会, 日本航空宇宙学会, Sept. 2021.
• Yuki Taoka, Kazuaki Inaba, Hiraku Sakamoto, Wataru Hijikata, Daisuke Kurabayashi, Takumi Ohashi, Maki Tagashira, Masanori Kado, Yagisawa Masaki, Ryo Terui, Shigeki SAITO. エンジニアリングデザインプロジェクト：2021年オンライン化の学び, イノベーション教育学会 第8回年次大会, Feb. 2021.
• Yuta Takahashi, Hiraku Sakamoto, 坂井真一郎. 磁気アクチュエータによる群衛星の位置・姿勢同時制御, 第64回宇宙科学技術連合講演会, Oct. 2020.
• Masaki Kato, Hiraku Sakamoto, Takashi Tomura, MASAAKI OKUMA. 非平面アレーアンテナ平面度補償のための位相調整アルゴリズムの検討, 第64回宇宙科学技術連合講演会, Oct. 2020.
• Hiraku Sakamoto, Hiroki Nakanishi. 多機能展開膜実証3UキューブサットOrigamiSat-1の 成果と発展, 第64回宇宙科学技術連合講演会, Oct. 2020.
• Yuto Shimada, Hiraku Sakamoto, MASAAKI OKUMA. アレーアンテナを搭載した織物展開構造の熱設計, 第64回宇宙科学技術連合講演会, Oct. 2020.
• Takashi Tomura, Keisuke Omoto, Hiraku Sakamoto. 反射位相制御によるリフレクトアレーアンテナの非平面度補償, 電子情報通信学会ソサイエティ大会, Sept. 2020.
• 杉原 アフマッド清志, 松下 将典, 森 治, 松本 純, Toshihiro Chujo, 佐伯 孝尚, 津田 雄一, 川口 淳一郎, 奥泉 信克, 宮崎 康行, Hiroshi Furuya, Hiraku Sakamoto, Saburo Matunaga, 谷 義隆, 清水 裕介, 岡田 達明, 岩田 隆浩, 川崎 繁男, 西山 和孝, 月崎 竜童, 神田 大樹, 細田聡史, 高尾 勇輝, 久保 勇貴, 柏岡 秀哉, 名田 悠一郎, 豊田 裕之, 佐藤 泰貴, 田中孝治, 中村 徹哉, 柴田 優一, 中尾 達郎, 森 一之, 後藤 亜紀, 藤井 さなえ, 渡邊 秋人, 酒井 良次, 伊藤 裕明. ソーラー電力セイル探査機のミッション・システム検討状況, 第20回宇宙科学シンポジウム, Jan. 2020.
• Shinji Takeda, Sae Koide, Keisuke Omoto, Hiraku Sakamoto, MASAAKI OKUMA, Hiroaki Tanaka, Kosei Ishimura. 宇宙形状可変鏡における変位の連成特性に関する研究, 第35回 宇宙構造・材料シンポジウム, Dec. 2019.
• Yuki Taoka, Shigeki SAITO, Masanori Kado, Kazuaki Inaba, Hiraku Sakamoto, 八木澤 優記, 照井 亮. エンジニアリングデザインプロジェクト2018の振り返りと2019へ, イノベーション教育学会 第7回年次大会, Nov. 2019.
• Keigo Ohno, Hiraku Sakamoto, MASAAKI OKUMA, Kenichi Okada, Atsushi Shirane, Takashi Tomura, Dongwon You. フレキシブル基板を搭載した宇宙展開織物膜構造の収納性, 第５回宇宙太陽発電(SSPS)シンポジウム, Nov. 2019.
• Keisuke Omoto, Hiraku Sakamoto, Takashi Tomura, JIRO HIROKAWA, MASAAKI OKUMA. 非平面度補償5.8GHz帯アクティブリフレクトアレーの試作と評価, 第63回宇宙科学技術連合講演会, Nov. 2019.
• Hiroki Nakanishi, Hiraku Sakamoto, OrigamiSat-1開発チーム. Launch Report of Multi-Functional Deployable Membrane Structure Demonstrator, 3U CubeSat OrigamiSat-1, 第63回宇宙科学技術連合講演会, Nov. 2019.
• Keigo Ohno, Hiraku Sakamoto, MASAAKI OKUMA, Kenichi Okada, Atsushi Shirane, Takashi Tomura, Dongwon You. 織物膜宇宙構造の収納性に関する研究, 宇宙太陽発電シンポジウム, Nov. 2019.
• Sae Koide, Keisuke Omoto, Hiraku Sakamoto, Hiroaki Tanaka, Kosei Ishimura, MASAAKI OKUMA. 熱膨張率不整合を低減させた形状可変鏡の熱変形特性計測, 第63回宇宙科学技術連合講演会, Nov. 2019.
• Hiraku Sakamoto, Hiroki Nakanishi, HIROSHI FURUYA, Kosuke Ikeya, Ryo Iijima, Ryoga Ide, Keigo Ohno, Keisuke Omoto, Yohei Iwasaki, Takashi Furuya, Shigeaki Okuyama, Masaki Kato, Madoka Kurosaki, Sae Koide, Yuuki Nakatsuka, Teruaki Hayashi, Reo Kashiyama, Junya Nakamura, Wataru Nio, Tsubasa Tsunemitsu, 山崎泰, Britta Hohmann, Yusuke Ota, Keisuke Taga, Naoki Ueda, Takumi Abe, Takaya Ozawa, Takagi Ryuhei, Yuri Terada, Tadashi Nishizawa, Kazuaki Hayasaki, Kouta Gotou, Mutsuhiro Ogawa, Kazuki Manaka, Akiya Inagaki, Toowa Amamoto, Takaomi Chubachi, Sho Tamura, Hideaki Okada, Ryo Sato, Taisuke Nakano, Takuya Nakakura, Takashi Yokomatsu, Kyohei Yashima, Shotaro Yokoyama, Syota Izumiyama, Takashi Tomura, Mitsushige Oda, 鳥阪綾子, Akihito Watanabe, 川端信義, 堀利行, 伊藤裕明, 倉冨剛, 下田優弥, 日高菜奈, 坂本信臣, 内藤祐貴, 渡辺和樹, 山崎政彦. 展開構造／高速ダウンリンク技術実証機 OrigamiSat-1の打ち上げ報告, 9th UNISEC Space Takumi Conference for Practical Study of Problem Finding and Solving in Space Systems, Mar. 2019.
• Hiraku Sakamoto, Hiroki Nakanishi, HIROSHI FURUYA, Kosuke Ikeya, Ryo Iijima, Ryoga Ide, Keigo Ohno, Keisuke Omoto, Yohei Iwasaki, Takashi Furuya, Shigeaki Okuyama, Masaki Kato, Madoka Kurosaki, Sae Koide, Yuuki Nakatsuka, Teruaki Hayashi, Reo Kashiyama, Junya Nakamura, Wataru Nio, Tsubasa Tsunemitsu, 山崎泰, Britta Hohmann, Yusuke Ota, Keisuke Taga, Naoki Ueda, Takumi Abe, Takaya Ozawa, Takagi Ryuhei, Yuri Terada, Tadashi Nishizawa, Kazuaki Hayasaki, Kouta Gotou, Mutsuhiro Ogawa, Kazuki Manaka, Akiya Inagaki, Toowa Amamoto, Takaomi Chubachi, Sho Tamura, Hideaki Okada, Ryo Sato, Taisuke Nakano, Takuya Nakakura, Takashi Yokomatsu, Kyohei Yashima, Shotaro Yokoyama, Syota Izumiyama, Takashi Tomura, Mitsushige Oda, 鳥阪綾子, Akihito Watanabe, 川端信義, 堀利行, 伊藤裕明, 倉冨剛, 下田優弥, 日高菜奈, 坂本信臣, 内藤祐貴, 渡辺和樹, 山崎政彦. 展開構造／高速ダウンリンク技術実証機 OrigamiSat-1の打ち上げ報告, 9th UNISEC Space Takumi Conference for Practical Study of Problem Finding and Solving in Space Systems, Mar. 2019.
• Masanori Matsushita, 奥泉信克, 西山和孝, Osamu Mori, 中条俊大, 松本 純, 横田力男, 豊田裕之, Yasutaka Satou, Hideki Kato, Koji Tanaka, 中村徹哉, 柴田優⼀, 中尾達郎, 森 ⼀之, 後藤亜紀, Yasuyuki Miyazaki, HIROSHI FURUYA, Hiraku Sakamoto, Saburo Matunaga, 谷 義隆, 清水裕介, 細田聡史, 月崎竜童, Hiroki Kanda. OKEANOSの電力セイル、展開機構、高比推力イオンエンジンの研究開発状況, 第19回宇宙科学シンポジウム, Jan. 2019.
• Wataru Nio, Hiraku Sakamoto, MASAAKI OKUMA, Akihito Watanabe. 織物膜構造物における薄型デバイス貼付および配線法の検討, 第34回 宇宙構造・材料シンポジウム, Dec. 2018.
• Toowa Amamoto, HIROSHI FURUYA, Hiraku Sakamoto. 複合材円筒ブーム構造における展開挙動因子の考察, 第34回 宇宙構造・材料シンポジウム, Dec. 2018.
• 奥泉信克, Osamu Mori, Yasutaka Satou, Masanori Matsushita, Yasuyuki Miyazaki, HIROSHI FURUYA, Hiraku Sakamoto, Saburo Matunaga, Kazuya Saito, 鳥阪綾子, M. C. Natori. OKEANOSの電力セイル展開機構と展開展張, 第62回宇宙科学技術連合講演会, 日本航空宇宙学会, Oct. 2018.
• Keisuke Omoto, Hiraku Sakamoto, Hiroaki Tanaka, Kosei Ishimura, MASAAKI OKUMA. 宇宙アンテナ形状制御機構の駆動状態での熱変形の評価と制御, 第62回宇宙科学技術連合講演会, Oct. 2018.
• Ryo Iijima, Hiraku Sakamoto, MASAAKI OKUMA, 下田優弥, 倉富剛, 日高菜奈. 超小型衛星搭載膜構造の画像撮影による軌道上形状計測, 第62回宇宙科学技術連合講演会, Oct. 2018.
• Hiraku Sakamoto, Hiroki Nakanishi. 多機能展開膜実証3UキューブサットOrigamiSat-1の地上検証と将来構想, 第62回宇宙科学技術連合講演会, Oct. 2018.
• Hiraku Sakamoto, 山崎政彦. 衛星キットを活用したシステムズエンジニアリング講義の事例報告, 第62回宇宙科学技術連合講演会, Oct. 2018.
• Kosuke IKEYA, Mitsushige ODA, Hiroki NAKANISHI, Hiraku SAKAMOTO. Quantitative Trade-Off Studies for Low-Cost Re-Entry of International Space Station, 日本機械学会 2018年度年次大会, Sept. 2018.
• Hiroki Nakanishi, Hiraku Sakamoto. 展開構造／高速ダウンリンク技術実証機 OrigamiSat-1の開発, UNISEC Takumi Conference, Mar. 2018.
• 中村拓磨, Hiraku Sakamoto, 奥泉信克, Yasutaka Satou, Osamu Mori. 反りを伴う膜面構造物の形状評価, 第61回宇宙科学技術連合講演会, Oct. 2017.
• Hiraku Sakamoto, Hiroki Nakanishi, OrigamiSat-1開発チーム. 多機能展開膜実証3UキューブサットOrigamiSat-1の開発, 第61回宇宙科学技術連合講演会, Oct. 2017.
• Junya Nakamura, Hiraku Sakamoto, 倉富剛, 日高菜奈, MASAAKI OKUMA. 超小型衛星に搭載する開断面複合材伸展マストの動解析, 2017年度日本機械学会年次大会, Sept. 2017.
• Reo Kashiyama, Hiraku Sakamoto, Hiroaki Tanaka, MASAAKI OKUMA. 宇宙アンテナ形状制御機構の熱変形低減法の試作による評価, 2017年度日本機械学会年次大会, Sept. 2017.
• Mutsuhiro Ogawa, Hiraku Sakamoto, MASAAKI OKUMA, 下田優弥, 倉富剛, 日高菜奈. 超小型衛星を用いた膜構造の軌道上ステレオ視計測システム, 第32回宇宙構造・材料シンポジウム, Dec. 2016.
• Toowa Amamoto, Hiraku Sakamoto, HIROSHI FURUYA, 奥泉信克, Akihito Watanabe, 川端信義. 複合材円筒ブーム構造の航空機実験における展開挙動の数値解析, 第32回宇宙構造・材料シンポジウム, Dec. 2016.
• Reo Kashiyama, Ken Tsukui, Hiraku Sakamoto, MASAAKI OKUMA, Hiroaki Tanaka. 宇宙アンテナ形状制御機構における熱変形の評価と低減法の開発, 第32回宇宙構造・材料シンポジウム, Dec. 2016.
• 下田優弥, 渡辺和樹, 坂本信臣, 倉冨剛, 内藤佑貴, 日高奈菜, Mutsuhiro Ogawa, Hiraku Sakamoto, Hiroki Nakanishi. 超小型衛星による薄膜展開技術の実証に向けたステレオカメラシステムの設計II, 第60回宇宙科学技術連合講演会, Sept. 2016.
• Hiraku Sakamoto. 3UキューブサットOrigamiSat-1による高機能展開膜構造の宇宙実証, 第60回宇宙科学技術連合講演会, Sept. 2016.
• 山崎政彦, 立松裕基, 田村明寛, 多田伸, 山田諭, 河原林大思, 鈴木智大, Yasuyuki Miyazaki, Hiraku Sakamoto. 航空機パラボリックフライトによる宇宙展開構造物の微小重力環境実験, 第60回宇宙科学技術連合講演会, Sept. 2016.
• HIROSHI FURUYA, Kyohei Yashima, Takashi Yokomatsu, Hiraku Sakamoto. ブーム・膜複合構造の微小重力環境下における展開挙動, 第60回宇宙科学技術連合講演会, Sept. 2016.
• Nobuyuki Miki, Kawaguchi Takayuki, Hiraku Sakamoto, MASAAKI OKUMA. Vibration Behavior Analysis of Wind Turbine Blades using Simple Numerical Analysis based on Blade Element Momentum Theory, 日本機械学会関東支部第22期総会講演会, 日本機械学会第２２期総会講演論文集, May 2016.
• Nobuyuki Miki, Kawaguchi Takayuki, Hiraku Sakamoto, MASAAKI OKUMA. Vibration Behavior Analysis of Wind Turbine Blades using Simple Numerical Analysis based on Blade Element Momentum Theory, 日本機械学会関東支部第22期総会講演会, 日本機械学会第２２期総会講演論文集, May 2016.
• Daisuke Kurabayashi, Shigeki SAITO, Hiraku Sakamoto. デザイン思考教育と喜び創出ものつくりの連携, 第16回計測自動制御学会システムインテグレーション部門講演会, 第16回計測自動制御学会システムインテグレーション部門講演会予稿集, pp. 2530-2531, Dec. 2015.
• 下田優弥, 渡辺和樹, 坂本信臣, 倉冨剛, 内藤佑貴, Hiraku Sakamoto, Hiroki Nakanishi, 山崎政彦. 超小型衛星による薄膜展開技術の実証に向けたステレオカメラシステムの設計, 第59回宇宙科学連合講演会, Oct. 2015.
• HIROSHI FURUYA, Yasutaka Satou, 高井元, Hiraku Sakamoto, 奥泉信克. 小型衛星デオービット用展開膜構造の開発について, 日本機械学会2015年度年次大会, Sept. 2015.
• HIROSHI FURUYA, Yasutaka Satou, Hiraku Sakamoto, M. C. Natori, 奥泉信克, 高井元. ブーム・膜複合展開構造の巻きつけ展開挙動の実験研究, 第57回構造強度に関する講演会, Aug. 2015.
• 奥泉信克, Yasutaka Satou, Osamu Mori, HIROSHI FURUYA, Hiraku Sakamoto, Yoji Shirasawa. ソーラー電力セイル膜面の展開形状解析, 第57回構造強度に関する講演会, Aug. 2015.
• Hiroaki Tanaka, Hiraku Sakamoto, Akiya Inagaki, Kosei Ishimura, 高橋啓太. スマート形状可変鏡スリット入り鏡面モデルの開発・評価, 第58回宇宙科学技術連合講演会, Nov. 2014.
• Akiya Inagaki, Hiraku Sakamoto, Hiroaki Tanaka, Kosei Ishimura, MASAAKI OKUMA. 様々な温度環境におけるスマート形状可変鏡の形状制御, 第58回宇宙科学技術連合講演会, Nov. 2014.
• 河内泰介, 山川宏, Kosei Ishimura, Hiroaki Tanaka, Hiraku Sakamoto. ラグランジュ点周りにおけるサンシールド衛星とミッション衛星のフォーメーションフライトの実現性について, 第58回宇宙科学技術連合講演会, Nov. 2014.
• HIROSHI FURUYA, Yasutaka Satou, Hiraku Sakamoto, M. C. Natori, 奥泉信克, 高井元, 萱場（鳥阪）綾子, 渡邊秋人, 高井元, 萱場（鳥阪）綾子, Takashi Yokomatsu, HIROYASU KURASHIGE, 渡邊秋人. ブーム・膜複合構造によるデオービット膜展開実験の試み, 第58回宇宙科学技術連合講演会, Nov. 2014.
• Hiroaki Tanaka, Hiraku Sakamoto, Akiya Inagaki, Kosei Ishimura, 土居明広, 河野裕介, 小山友明. 高精度アンテナシステムに向けたスマート形状可変鏡の開発（アンテナ特性評価試験）, 第56回構造強度に関する講演会, Aug. 2014.
• HIROSHI FURUYA, Yasutaka Satou, Hiraku Sakamoto, M. C. Natori. ブーム・膜巻き付け折り畳み構造の地上展開実験, 第56回構造強度に関する講演会, Aug. 2014.
• 岡部雄志, Nozomu Kogiso, Hiraku Sakamoto, 秋田剛, Hiroaki Tanaka. リブ-フープケーブルで構成されるアンテナ構造簡易モデルの有限要素モデル更新, 第56回構造強度に関する講演会, Aug. 2014.
• H. Furuya, Y. Satou, H. Sakamoto, M. C. Natori, N. Okuizumi. Deployment Experiment of Boom-Membrane Integrated Wrapped Structure, 24th Workshop on Astrodynamics and Flight Mechanics, Sagamihara, July 2014.
• Akiya Inagaki, Hiraku Sakamoto, Hiroaki Tanaka, Kosei Ishimura, MASAAKI OKUMA. 高精度形状可変副鏡の実験モデルにおける形状制御, 第22回スペース・エンジニアリング・コンファレンス, Dec. 2013.
• Yasutaka Satou, HIROSHI FURUYA, Hiraku Sakamoto, Yoji Shirasawa, Osamu Mori, 奥泉信克, M. C. Natori. 区分直線折りによるソーラーセイル大型膜の巻きつけ折り畳み実験, 第28回宇宙構造・材料シンポジウム, 宇宙航空研究開発機構, Dec. 2013.
• Hiraku Sakamoto, Nozomu Kogiso, Hiroaki Tanaka, Kosei Ishimura, MASAAKI OKUMA. モデル更新による張力構造の高精度解析, 第28回宇宙構造・材料シンポジウム, 宇宙航空研究開発機構, Dec. 2013.
• Y. Satou, N. Okuizumi, G. Ono, H. Furuya, H. Sakamoto, Y. Shirasawa, O. Mori. Nonlinear Finite Element Simulations for Deployed Configuration of Solar Sail "IKAROS", 23rd Workshop on Astrodynamics and Flight Mechanics, July 2013.
• Hiraku Sakamoto, Y. Satou, H. Furuya, Y. Shirawasa, O. Mori, N. Okuizumi, M. C. Natori. Wrapping Experiments of Piecewise Straight Fold Membrane for Large Solar Sail, 29th International Symposium on Space Technology and Science (ISTS), June 2013.
• Hiraku Sakamoto, M.C. Natori, N. Katsumata, H. Yamakawa, A. Watanabe, N. Kawabata, N. Okuizumi, O. Mori, Y. Shirasawa, H. Furuya. "Model Study of Membrane Space Structures Based on a Stepwise Deployment Concept, 29th International Symposium on Space Technology and Science (ISTS), June 2013.
• Hiraku Sakamoto. Systems Engineering Education through Students’ CanSat Project Interacting with Young Professional Engineers, 29th International Symposium on Space Technology and Science (ISTS), June 2013.
• Kengo Shintaku, Saburo Matunaga, Hiraku Sakamoto, G. Ono, O. Mori, Y. Shirawasa, T. Satoh, N. Okuizumi. Experiment and Analysis of Spinning Membrane Deployment Focusing on Shape Imbalance for Solar Sail, 29th International Symposium on Space Technology and Science (ISTS), June 2013.
• Hiraku Sakamoto, S. Kadonishi, Y. Satou, H. Furuya, Y. Shirasawa, N. Okuizumi, O. Mori, H. Sawada, J. Matsumoto, Y. Miyazaki, M. Okuma. Development of Repeatable Storage Method for a Large Solar Sail, 29th International Symposium on Space Technology and Science (ISTS), June 2013.
• Shogo Kadonishi, Hiraku Sakamoto, Yasutaka Satou, HIROSHI FURUYA, Yoji Shirasawa, 奥泉信克, Osamu Mori, 澤田弘崇, 松本純, M. C. Natori, Yasuyuki Miyazaki, MASAAKI OKUMA. 厚さを考慮したセイル膜の収納再現性について, 第28回宇宙構造・材料シンポジウム, 宇宙航空研究開発機構, Dec. 2012.
• 井上剛史, 生津路子, J. Kalchman, P. Agrawal, V. Goemans, M. Wang, 中根拓, Kosuke Takahashi, Hiraku Sakamoto, Shigeki SAITO, 二井見博文. STeLAフォーラム2012におけるリーダーシップ教育を目的としたグループプロジェクトの構築, 第13回計測自動制御学会システムインテグレーション部門講演会, 計測自動制御学会, Dec. 2012.
• 生津路子, 井上剛史, J. Kalchman, C. Rozemuller, G. Hemann, 中根拓, Kosuke Takahashi, Hiraku Sakamoto, Shigeki SAITO, 二井見博文. STeLAリーダーシップフォーラム2012におけるレスキューロボット開発の実践, 第13回計測自動制御学会システムインテグレーション部門講演会, 計測自動制御学会, Dec. 2012.
• 岩佐貴史, Kosei Ishimura, Hiroaki Tanaka, 樋口健, 岸本直子, HIROSHI FURUYA, 神谷友裕, Nozomu Kogiso, 目黒在, 泉田啓, 荻芳郎, 中篠恭一, Hiraku Sakamoto, atsuhiko senba, Yasutaka Satou, Yutaro Matsuo. 点計測と面計測を統合した大型宇宙構造システムの全視野形状計測法の提案, 第28回宇宙構造・材料シンポジウム, 宇宙航空研究開発機構, Dec. 2012.
• Hiraku Sakamoto, M. C. Natori, Shogo Kadonishi, MASAAKI OKUMA. 厚さを考慮した平面膜の折り畳みについて, 第54回構造強度に関する講演会, 日本航空宇宙学会, Aug. 2012.
• Hiraku Sakamoto, 神武直彦, 白坂成功, 伊藤琢博, 山田晧司, 成田伸一郎. CanSat開発を通じたシステムズ・エンジニアリング教育の実践, 2nd UNISEC Takumi Conference, 2nd UNISEC Takumi Conference講演集, 大学宇宙工学コンソーシアム, July 2012.  Official location  
• Hiraku Sakamoto, N. Ragosta, MASAAKI OKUMA. 膜構造の展開挙動の有限要素解析とその妥当性確認, 第55回宇宙科学技術連合講演会, 第55回宇宙科学技術連合講演会講演集, Nov. 2011.  Official location  
• 伊藤琢博, 山田皓司, Hiraku Sakamoto, 神武直彦, 白坂成功, 成田伸一郎. Cansat開発におけるシステムズ・エンジニアリング教育の効果, 第55回宇宙科学技術連合講演会, 第55回宇宙科学技術連合講演会講演集, Nov. 2011.  Official location  
• Hiroaki Tanaka, 秋田剛, Nozomu Kogiso, Kosei Ishimura, Hiraku Sakamoto, 荻芳郎, Yasuyuki Miyazaki. リブ-フープケーブルで構成される衛星搭載用アンテナ構造の設計方法, 日本機械学会第24回計算力学講演会, 日本機械学会第24回計算力学講演会講演集, 日本機械学会, Oct. 2011.  Official location  
• Nozomu Kogiso, Hiroaki Tanaka, 秋田剛, Kosei Ishimura, Hiraku Sakamoto, 荻芳郎, Yasuyuki Miyazaki, 岩佐貴史. 衛星搭載用アンテナ構造設計のためのFEM 数値解の精度比較, 日本機械学会第24回計算力学講演会, 日本機械学会第24回計算力学講演会講演集, 日本機械学会, Oct. 2011.  Official location  
• 小木曽望, 上馬場雄太, Yuuki Okada, Hiraku Sakamoto. ブートストラップ法を用いた宇宙構造物の不確定性推定について, 日本機械学会2011年度年次大会, Sept. 2011.
• 田中宏明, 森島駿一, Yuuki Okada, 池田忠繁, Hiraku Sakamoto, 秋田剛, 荻芳郎, 石村康生, 樋口健. スマート構造システムの低温低圧環境における有効性実証試験, 第26回宇宙構造・材料シンポジウム, JAXA, Dec. 2010.  Official location  
• 白澤洋次, Hiraku Sakamoto, 澤田弘崇, 奥泉信克, Osamu Mori, 羽染円絵. IKAROSセイル膜の一次展開シミュレーションと軌道上結果, 第54回宇宙科学連合講演会,, Nov. 2010.  Official location  
• Hiraku Sakamoto, Daisuke Haraguchi, 白澤洋次, Osamu Mori. 数値動解析に基づくIKAROSセイル膜の一気展開の制御則の構築, 第54回宇宙科学連合講演会,, Nov. 2010.  Official location  
• BEOMSUK KANG, 瀬川 周平, Hiraku Sakamoto, MASAAKI OKUMA. 柔軟多孔質材と流体による制振材 開発のための基礎的研究, 日本機械学会機械力学計測制御部門講演会D&D2010, D&D2010 CD-ROM講演論文集, Sept. 2010.
• 秋田 啓仁, Robert Kloepper, 寺田聖一, 中園 利之, Hiraku Sakamoto, MASAAKI OKUMA. 高精度 な剛体特性同定法の開発に関する研究, 日本機械学会機械力学計測制御部門講演会D&D2010, D&D2010 CD-ROM講演論文集, Sept. 2010.
• 中園 利之, 人位 智大, Robert Kloepper, Hiraku Sakamoto, MASAAKI OKUMA. 複数ばね支持による低剛性構造物 の剛体特性同定の高精度化に関する研究, 日本機械学会機械力学計測制御部門講演会D&D2010, D&D2010 CD-ROM講演論 文集, Sept. 2010.
• Yoji Shirasawa, Osamu Mori, Nobukatsu Okuizumi, Hirotaka Sawada, Yasuyuki Miyazaki, Hiraku Sakamoto, HIROSHI FURUYA, Saburo Matunaga. Analysis on membrane deployment dynamics of solar sail using multi-particle model, 第20回アストロダイナミクスシンポジウム, 第20回アストロダイナミクスシンポジウム, JAXA, July 2010.
• 田中宏明, 秋田剛, 池田忠繁, 石田良平, 石村康生, 岩佐貴史, 岩田稔, 大久保博志, 岡部洋二, 萩芳郎, 小木曽望, Hiraku Sakamoto, 仙場淳彦, 花原和之, 樋口健, HIROSHI FURUYA, 高精度スマート構造チーム. 次世代科学衛星のための高精度スマート構造システム, 第10回宇宙科学シンポジウム, 第10回宇宙科学シンポジウム, pp. 1-4, Jan. 2010.
• Yasuyuki Miyazaki, 岸本直子, M. C. Natori, Hiraku Sakamoto, HIROSHI FURUYA, 小木曽望, 秋田剛, Atsuhiko SENBA, 山川宏, 目黒在, 石村康生, 樋口健, 「先進軽量構造チーム」研究チーム. 超大型膜面構造物とそのアプリケーション, 第10回宇宙科学シンポジウム, pp. 1-4, Jan. 2010.
• Hiraku Sakamoto, Yasuyuki Miyazaki, Osamu Mori, 白澤洋次. 有限要素法によるIKAROSセイル一次展開の動解析, 第25 回 宇宙構造・材料シンポジウム, Dec. 2009.
• 大久保博志, 田中宏明, 池田忠繁, 石田良平, 岩田稔, 岡部洋二, Hiraku Sakamoto, Saburo Matunaga, 中篠恭一, 花原和之, 室園昌彦, 目黒在, 秋田剛, 石村康生, 奥泉信克, 小野田淳次郎, 小松敬治, 竹内伸介, 樋口健, 峯杉賢治. 大気球を用いた超高精度スマート構造システムの実証試験計画, 平成21年度 大気球シンポジウム, 平成21年度 大気球シンポジウム論文集, ISAS, pp. 104-107, Oct. 2009.
• N. Okuizumi, H. Sakamoto, A. Kitajima, M. Sugita. Centrifugal Deployment Experiments of a Square-shaped Solar Sail Membrane, 18th Workshop on JAXA Astrodynamics and Flight Mechanics, June 2009.

Other Publication

• Hiraku Sakamoto. Lecture #12 Subsystem Lecture for CubeSat: Mechanism System, KiboCUBE Academy Webinars: Season 2: On-demand Pre-recorded Lectures, United Nations Office for Outer Space Affairs, Dec. 2021.  Official location  
• Hiraku Sakamoto. Lecture#11 Subsystem Lecture for CubeSat: Structure System, KiboCUBE Academy Webinars: Season 2: On-demand Pre-recorded Lectures, United Nations Office for Outer Space Affairs, Dec. 2021.  Official location  
• Hiroaki Tanaka, Hiraku Sakamoto, Kosei Ishimura, Nozomu Kogiso, 土居明広, 河野裕介. 宇宙用高精度大型構造物の研究開発：スマート形状可変鏡（特集 宇宙からの高性能光学観測を支える技術 第11回）, 日本航空宇宙学会誌 = Journal of the Japan Society for Aeronautical and Space Sciences, Vol. 66, No. 5, pp. 135-140, Jan. 2018.
• Hiraku Sakamoto, Yoji Shirasawa, Satoru Ozawa. 宇宙展開構造の数値解析（特集 超軽量宇宙展開構造物 第9回）, 日本航空宇宙学会誌 = Journal of the Japan Society for Aeronautical and Space Sciences, Vol. 65, No. 9, pp. 284-289, Jan. 2017.
• HIROSHI FURUYA, Hiraku Sakamoto. 伸展ブーム・膜からなる宇宙展開構造, 日本航空宇宙学会誌 = Journal of the Japan Society for Aeronautical and Space Sciences, Vol. 64, No. 11, pp. 32-326, Jan. 2016.
• Hiraku Sakamoto. えあろすぺーすABC【基礎・応用編】膜構造, 日本航空宇宙学会誌, 日本航空宇宙学会, Vol. 59, No. 689, June 2011.

Patent

• Hiraku Sakamoto, Reo Kashiyama. 可変熱膨張及びゼロ熱膨張を有する変位拡大装置及びこれを用いた形状可変副鏡ユニット. Patent. Registered. 国立大学法人東京工業大学. 2019/01/31. 特願2019-015751. 2020/08/13. 特開2020-124068. 特許第7290306号. 2023/06/05 2023.

Degree

• Dynamic Wrinkle Reduction Strategies for Membrane Structures,  Thesis,  Ph.D.,  University of Colorado at Boulder,  2004/12/--, 

[ Save as BibTeX ]    [ Paper, Presentations, Books, Others, Degrees: Save as CSV ]    [ Patents: Save as CSV ]