Alperen Pala, T. Kuwahara, T. Saitou, Hiroki Uto, Y. Shibuya
{"title":"Space Demonstration of Boom Extension and De-orbit Sail Deployment of the Separable De-orbit Mechanism of Micro-satellite ALE-1","authors":"Alperen Pala, T. Kuwahara, T. Saitou, Hiroki Uto, Y. Shibuya","doi":"10.2322/tastj.20.65","DOIUrl":"https://doi.org/10.2322/tastj.20.65","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":"128162435","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}
I. Funaki, Shinatora Cho, Tadahiko Sano, Tsutomu Fukatsu, Yosuke Tashiro, Taizo Shiiki, Y. Nakamura, Hiroki Watanabe, K. Kubota, Yoshiki Matsunaga, K. Fuchigami
{"title":"1,000-hours Demonstration of a 6-kW-class Hall Thruster for All-Electric Propulsion Satellite","authors":"I. Funaki, Shinatora Cho, Tadahiko Sano, Tsutomu Fukatsu, Yosuke Tashiro, Taizo Shiiki, Y. Nakamura, Hiroki Watanabe, K. Kubota, Yoshiki Matsunaga, K. Fuchigami","doi":"10.2322/TASTJ.17.589","DOIUrl":"https://doi.org/10.2322/TASTJ.17.589","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":"131910664","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. Kikuchi, T. Hashimoto, M. Otsuki, Naoki Morishita, Wataru Torii, Kakeru Tokunaga, Takahiro Kuhara, Kazuyuki Nakamura
{"title":"Development and Attitude Disturbance Estimation of Separation Mechanism for Nano Moon Lander OMOTENASHI","authors":"J. Kikuchi, T. Hashimoto, M. Otsuki, Naoki Morishita, Wataru Torii, Kakeru Tokunaga, Takahiro Kuhara, Kazuyuki Nakamura","doi":"10.2322/tastj.19.629","DOIUrl":"https://doi.org/10.2322/tastj.19.629","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":"132013713","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}
On-board Orbit Determination (OD) using directions of celestial bodies, planets and asteroids, in the Solar System for the Autonomous Navigation (AutoNav) is introduced in this paper. For deep space missions, OD has been performed by Range and RangeRate (RARR), which is the traditional ground tracking approach by radio wave. RARR enables the higher accuracy of OD than other methods. However, such radio navigation has the inevitable problems, e.g. the reduction of radio wave strength and the transmitter limitation. Furthermore, people must stay and operate the spacecraft on the ground station, which makes the operating cost and burden considerable. Therefore, there has been a growing interest in the autonomy of the spacecraft in recent years to avoid the above-mentioned problems. This paper considers on-board OD using directions of celestial bodies from spacecraft. In particular, the selection of observation targets is focused on because it’s important that the selection of observation targets leads to the satisfaction of mission requirements or increment of science observation. Then, this paper presents the method for the target selection, which is computationally cheap and makes the target selection easy.
介绍了利用太阳系天体、行星和小行星的方向进行自主导航的星载轨道确定方法。对于深空任务，传统的无线电波地面跟踪方法是Range and RangeRate (RARR)。RARR测量的外径精度高于其他方法。然而，这种无线电导航存在着不可避免的问题，如无线电波强度的降低和发射机的限制。此外，人们必须在地面站停留和操作航天器，这使得运行成本和负担相当大。因此，近年来人们对航天器的自主性越来越感兴趣，以避免上述问题。本文利用航天器上天体的方向来考虑星载OD。特别是观测目标的选择，对于满足任务要求或增加科学观测量至关重要。然后，本文提出了目标选择方法，该方法计算量小，使目标选择容易。
{"title":"Simplified Covariance Estimation and Target Observation Management Method for On-Board Optical Navigation of Deep Space Probe","authors":"Yosuke Kawabata, T. Saiki, Y. Kawakatsu","doi":"10.2322/TASTJ.17.538","DOIUrl":"https://doi.org/10.2322/TASTJ.17.538","url":null,"abstract":"On-board Orbit Determination (OD) using directions of celestial bodies, planets and asteroids, in the Solar System for the Autonomous Navigation (AutoNav) is introduced in this paper. For deep space missions, OD has been performed by Range and RangeRate (RARR), which is the traditional ground tracking approach by radio wave. RARR enables the higher accuracy of OD than other methods. However, such radio navigation has the inevitable problems, e.g. the reduction of radio wave strength and the transmitter limitation. Furthermore, people must stay and operate the spacecraft on the ground station, which makes the operating cost and burden considerable. Therefore, there has been a growing interest in the autonomy of the spacecraft in recent years to avoid the above-mentioned problems. This paper considers on-board OD using directions of celestial bodies from spacecraft. In particular, the selection of observation targets is focused on because it’s important that the selection of observation targets leads to the satisfaction of mission requirements or increment of science observation. Then, this paper presents the method for the target selection, which is computationally cheap and makes the target selection easy.","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":"132224969","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}
M. Kawazu, N. Yamamoto, Masatoshi Chono, Hirotaka Fuchigami, T. Morita
{"title":"Prediction of Thruster Performance in Hall Thrusters Using Neural Network with Auto Encoder","authors":"M. Kawazu, N. Yamamoto, Masatoshi Chono, Hirotaka Fuchigami, T. Morita","doi":"10.2322/tastj.19.760","DOIUrl":"https://doi.org/10.2322/tastj.19.760","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":"133468821","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}
K. Hirai, Akiko Nakazato, H. Yano, Kenichi Kawazone, J. Koyanagi, Kazuhiko Yamada
Ablative performance of High-density carbon phenolic (HD-CFRP) is investigated by exposing to an extremely cold temperature of -160 degree Celsius, followed by rapid heating conditions ranging from 5.5 to 12.1 MW/m 2 of JAXA/ISAS arc jet tests to identify the thermal integrity of the material as a future re-entry capsule heat shield material with demanding system requirements, In this paper, we introduce our activities and the outcomes by the investigation.
{"title":"Ablative Performance of High Density Carbon Phenolic after Cold Soak Exposure","authors":"K. Hirai, Akiko Nakazato, H. Yano, Kenichi Kawazone, J. Koyanagi, Kazuhiko Yamada","doi":"10.2322/TASTJ.17.333","DOIUrl":"https://doi.org/10.2322/TASTJ.17.333","url":null,"abstract":"Ablative performance of High-density carbon phenolic (HD-CFRP) is investigated by exposing to an extremely cold temperature of -160 degree Celsius, followed by rapid heating conditions ranging from 5.5 to 12.1 MW/m 2 of JAXA/ISAS arc jet tests to identify the thermal integrity of the material as a future re-entry capsule heat shield material with demanding system requirements, In this paper, we introduce our activities and the outcomes by the investigation.","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":"124330463","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":"Experimental Study on Unsteadiness of n-decane Single Droplet Evaporation and Effect of Natural Convection on Droplet Evaporation at High Pressures and Temperatures","authors":"Yosuke Murakami, H. Nomura, Y. Suganuma","doi":"10.2322/tastj.19.647","DOIUrl":"https://doi.org/10.2322/tastj.19.647","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":"133974471","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}
A thermal lattice-Boltzmann model of a van der Waals gas was used to check its applicability to specific challenges in the numerical simulation of transient cryogenic two-phase flow in rocket engine feed systems. Three test cases were chosen to prove the model is capable of capturing the underlying physics. Overall correct representation of incompressible flow should be demonstrated by a lid-driven cavity. The capability of the model to handle shocks and supersonic flow is shown in a shock tube configuration. The last test case was chosen in order to show instantaneous evaporation by the formation of a single vapour bubble at a heated surface.
{"title":"Validation of a Lattice Boltzmann Model for Transient Cryogenic Two-Phase Flow","authors":"T. Traudt, S. Schlechtriem","doi":"10.2322/TASTJ.17.321","DOIUrl":"https://doi.org/10.2322/TASTJ.17.321","url":null,"abstract":"A thermal lattice-Boltzmann model of a van der Waals gas was used to check its applicability to specific challenges in the numerical simulation of transient cryogenic two-phase flow in rocket engine feed systems. Three test cases were chosen to prove the model is capable of capturing the underlying physics. Overall correct representation of incompressible flow should be demonstrated by a lid-driven cavity. The capability of the model to handle shocks and supersonic flow is shown in a shock tube configuration. The last test case was chosen in order to show instantaneous evaporation by the formation of a single vapour bubble at a heated surface.","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":"124589081","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":"Development of Aerodynamic Force Model Based on Potential Flow for Liquid Droplets Analyzed by Particle Method","authors":"Hiroki Tsujimura, K. Kubota, Tetsuya Sato","doi":"10.2322/tastj.19.690","DOIUrl":"https://doi.org/10.2322/tastj.19.690","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":"129346451","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":"A Study on Mars Aerocapture Using Spinning Solar Sail","authors":"Kakeru Tokunaga, Kojiro Suzuki","doi":"10.2322/tastj.19.838","DOIUrl":"https://doi.org/10.2322/tastj.19.838","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":"128653746","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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