{"title":"Effects of Impact Angles on Ballistic Limit of Ultra-High-Molecular-Weight Polyethylene Fiber Fabrics","authors":"Junya Fuchita, M. Nishida, M. Higashide","doi":"10.2322/TASTJ.17.432","DOIUrl":"https://doi.org/10.2322/TASTJ.17.432","url":null,"abstract":"","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114905423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tomomasa Shibuya, T. Kuwahara, Pasith Tangdhanakanond, S. Fujita, Yuji Sato, Kosuke Hanyu, Yu Murata, Adrien Potier, Morokot Sakal, Y. Sakamoto
{"title":"Thermal Design and Evaluation of the Microsatellite RISESAT","authors":"Tomomasa Shibuya, T. Kuwahara, Pasith Tangdhanakanond, S. Fujita, Yuji Sato, Kosuke Hanyu, Yu Murata, Adrien Potier, Morokot Sakal, Y. Sakamoto","doi":"10.2322/tastj.19.855","DOIUrl":"https://doi.org/10.2322/tastj.19.855","url":null,"abstract":"","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114578104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Fuse, S. Abe, M. Yanagisawa, R. Funase, H. Yano
present study describes the DELPHINUS camera system and the first method for space-based observation of lunar impact flashes.
本研究介绍了DELPHINUS相机系统和第一种基于空间观测月球撞击闪光的方法。
{"title":"Space-based Observation of Lunar Impact Flashes","authors":"R. Fuse, S. Abe, M. Yanagisawa, R. Funase, H. Yano","doi":"10.2322/TASTJ.17.315","DOIUrl":"https://doi.org/10.2322/TASTJ.17.315","url":null,"abstract":"present study describes the DELPHINUS camera system and the first method for space-based observation of lunar impact flashes.","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128743173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Morokot Sakal, T. Kuwahara, Hannah Tomio, Yu Murata, Kosuke Hanyu, S. Fujita, Yuji Sato, Y. Sakamoto, S. Kimura, J. Kurihara
{"title":"Integration and Orbit Demonstration of Micro-Satellite Payload System Based on a Plug-and-Play On-Board Computer","authors":"Morokot Sakal, T. Kuwahara, Hannah Tomio, Yu Murata, Kosuke Hanyu, S. Fujita, Yuji Sato, Y. Sakamoto, S. Kimura, J. Kurihara","doi":"10.2322/tastj.19.784","DOIUrl":"https://doi.org/10.2322/tastj.19.784","url":null,"abstract":"","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133773364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Matsushima, H. Sahara, Shogo Asano, Masahiro Kaku, T. Kanda, M. Banno, Hirohisa Asano, Yuya Kobayashi, Natsumi Kimura, N. Yamashita, Y. Ezoe, K. Ishikawa, Kasumi Nakakamura, M. Numazawa, K. Takeuchi, Masaru Terada, Daiki Ishii, Y. Noda, M. Fujitani, N. Isobe, H. Nakajima, N. Miyamura
We have been developing a microsatellite based on our concept of a satellite to meet the potential needs of challenging space-science missions that only a microsatellite can accomplish. A binary black hole (BBH) is a state in which two black holes at the center of their respective galaxies are closing the orbital distance around each other. Observations using conventional large satellites have obtained insufficient results for BBH exploration because the satellites cannot be engaged in the long -term and concentrated observation of astral body such as BBH which is not established the existence. Microsatellites have two advantages; namely, they can be occupied with long-term observation, and they have a low-cost and short-term development compared with large satellites. Thus, we can possibly program a challenging mission for a microsatellite, even with a certain risk. We implemented two key technologies on our microsatellite named ORbiting Binary black-hole Investigation Satellite (ORBIS), namely, a Distributed Architectu re with a Common Signboard System and mission-equipment space for astronomical observation equipment. The specifications and progress of each subsystem are reported in this paper, along with an outline and the current status of the ORBIS development.
{"title":"Development of Binary Black Hole Observation Satellite “ORBIS”","authors":"J. Matsushima, H. Sahara, Shogo Asano, Masahiro Kaku, T. Kanda, M. Banno, Hirohisa Asano, Yuya Kobayashi, Natsumi Kimura, N. Yamashita, Y. Ezoe, K. Ishikawa, Kasumi Nakakamura, M. Numazawa, K. Takeuchi, Masaru Terada, Daiki Ishii, Y. Noda, M. Fujitani, N. Isobe, H. Nakajima, N. Miyamura","doi":"10.2322/TASTJ.17.477","DOIUrl":"https://doi.org/10.2322/TASTJ.17.477","url":null,"abstract":"We have been developing a microsatellite based on our concept of a satellite to meet the potential needs of challenging space-science missions that only a microsatellite can accomplish. A binary black hole (BBH) is a state in which two black holes at the center of their respective galaxies are closing the orbital distance around each other. Observations using conventional large satellites have obtained insufficient results for BBH exploration because the satellites cannot be engaged in the long -term and concentrated observation of astral body such as BBH which is not established the existence. Microsatellites have two advantages; namely, they can be occupied with long-term observation, and they have a low-cost and short-term development compared with large satellites. Thus, we can possibly program a challenging mission for a microsatellite, even with a certain risk. We implemented two key technologies on our microsatellite named ORbiting Binary black-hole Investigation Satellite (ORBIS), namely, a Distributed Architectu re with a Common Signboard System and mission-equipment space for astronomical observation equipment. The specifications and progress of each subsystem are reported in this paper, along with an outline and the current status of the ORBIS development.","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116645187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sparse Optimal Control for Nonlinear Trajectory Design in Three-Body Problem","authors":"Yuki Kayama, M. Bando, S. Hokamoto","doi":"10.2322/tastj.19.545","DOIUrl":"https://doi.org/10.2322/tastj.19.545","url":null,"abstract":"","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121687150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nobuhiro Funabiki, S. Ikari, A. Ishikawa, R. Funase, S. Nakasuka
This paper proposes an accurateaerodynamic model for membranestructures infree-molecularflow that allows the calculation of torque andforce exerted on them, and whichcan beused for preciseanalysisof the attitudes andorbital dynamics of the structures . Recently, various types of deployable thin membrane structures attached to satellites for deorbit purposeshavebeen developed and demonstrated on low-Earthorbits (LEOs), andtheir attitudedynamicshavealsobeen investigated. However, in early studies, deorbit sails were modeled as simple flat plates because there were no precise models for membranesthat could expresswrinkles, billowing, and asymmetricshapes.In this paper,a calculation method using tensor expressions of aerodynamic disturbance is proposed for the design of deorbit devices using high-fidelity membrane models. The proposed method is tested in the attitude stability analysis of membranes on LEOs, and the results show that the asymmetric shapes of the membranes affect their attitude stability.
{"title":"Accurate Aerodynamic Model of Membranes in Free-Molecular Flow for Deorbit Device Design","authors":"Nobuhiro Funabiki, S. Ikari, A. Ishikawa, R. Funase, S. Nakasuka","doi":"10.2322/TASTJ.17.189","DOIUrl":"https://doi.org/10.2322/TASTJ.17.189","url":null,"abstract":"This paper proposes an accurateaerodynamic model for membranestructures infree-molecularflow that allows the calculation of torque andforce exerted on them, and whichcan beused for preciseanalysisof the attitudes andorbital dynamics of the structures . Recently, various types of deployable thin membrane structures attached to satellites for deorbit purposeshavebeen developed and demonstrated on low-Earthorbits (LEOs), andtheir attitudedynamicshavealsobeen investigated. However, in early studies, deorbit sails were modeled as simple flat plates because there were no precise models for membranesthat could expresswrinkles, billowing, and asymmetricshapes.In this paper,a calculation method using tensor expressions of aerodynamic disturbance is proposed for the design of deorbit devices using high-fidelity membrane models. The proposed method is tested in the attitude stability analysis of membranes on LEOs, and the results show that the asymmetric shapes of the membranes affect their attitude stability.","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121165534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Taking action for evacuation immediately is the most important and effective measure when tsunami attacks in the aftermath of a large earthquake. In this paper, a concept of delivering the least amount of emergency warning information and location based information possible is presented with a design of indoor/outdoor seamless positioning and emergency warning system that uses GNSS-based signals. This system includes an indoor positioning system equipped with a positioning method with GNSS-based signals and broadcasts a small volume of data including emergency warning information indoor and outdoor as well as the navigation message. A facility with large indoor space in coastal areas has GNSS antenna, receives and relays the emergency warning message from GNSS to transmitters of indoor positioning system via local area network. The system also has a function to provide indoor evacuation control information from building security room. The data communication speed of indoor signals compatible with GNSS is low as well as GNSS signals. Although the available data volume for emergency warning information is limited, we have confirmed the system is able to provide marginal information on an actual case of indoor positioning system, the indoor messaging system (IMES).
{"title":"Concept Design of Seamless Location Based Emergency Warning System with GNSS-Based Signals","authors":"A. Sato, M. Nakajima, N. Kohtake","doi":"10.2322/TASTJ.17.344","DOIUrl":"https://doi.org/10.2322/TASTJ.17.344","url":null,"abstract":"Taking action for evacuation immediately is the most important and effective measure when tsunami attacks in the aftermath of a large earthquake. In this paper, a concept of delivering the least amount of emergency warning information and location based information possible is presented with a design of indoor/outdoor seamless positioning and emergency warning system that uses GNSS-based signals. This system includes an indoor positioning system equipped with a positioning method with GNSS-based signals and broadcasts a small volume of data including emergency warning information indoor and outdoor as well as the navigation message. A facility with large indoor space in coastal areas has GNSS antenna, receives and relays the emergency warning message from GNSS to transmitters of indoor positioning system via local area network. The system also has a function to provide indoor evacuation control information from building security room. The data communication speed of indoor signals compatible with GNSS is low as well as GNSS signals. Although the available data volume for emergency warning information is limited, we have confirmed the system is able to provide marginal information on an actual case of indoor positioning system, the indoor messaging system (IMES).","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124540942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Yoshida, Nobuo Kenmochi, H. Sugita, Y. Nodomi, S. Obara, A. Sasaki, A. Kuze
Pointing mechanism installed on GOSAT/TANSO-FTS is one of the most essential techniques to realize optimal observation patterns on the earth and a long-term operation period. In orbit, the continuous increase of angular rate sensor cable torque was occurred, and this induced the limited pointing angle operation for the along track direction. In this paper, we report reproducing experimental results for the degradation of the pointing mechanism in orbit.
{"title":"Investigation of the Long-Term Change of the TANSO-FTS Pointing Characteristics for a Future Agile Pointing Mechanism","authors":"J. Yoshida, Nobuo Kenmochi, H. Sugita, Y. Nodomi, S. Obara, A. Sasaki, A. Kuze","doi":"10.2322/TASTJ.17.339","DOIUrl":"https://doi.org/10.2322/TASTJ.17.339","url":null,"abstract":"Pointing mechanism installed on GOSAT/TANSO-FTS is one of the most essential techniques to realize optimal observation patterns on the earth and a long-term operation period. In orbit, the continuous increase of angular rate sensor cable torque was occurred, and this induced the limited pointing angle operation for the along track direction. In this paper, we report reproducing experimental results for the degradation of the pointing mechanism in orbit.","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114276006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Takayanagi, Y. Maru, Kazuhiko Yamada, Toshiyuki Suzuki, Tatsuro Nakao, Kazuki Nohara, T. Watanuki
{"title":"Development of Parachute System for Large-Scale Sample Return Capsule","authors":"H. Takayanagi, Y. Maru, Kazuhiko Yamada, Toshiyuki Suzuki, Tatsuro Nakao, Kazuki Nohara, T. Watanuki","doi":"10.2322/tastj.19.682","DOIUrl":"https://doi.org/10.2322/tastj.19.682","url":null,"abstract":"","PeriodicalId":120185,"journal":{"name":"TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115284421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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