There have been several advanced space missions using large gossamer space structures proposed recently, such as a spinning solar sail. However, only certain missions have been implemented, primarily because the on-orbit dynamic behavior of such structures cannot be precisely predicted through ground tests. To address this limitation, a scale law between a small- and a full-scale model of large membrane structures is proposed herein. In addition, small or reduced-order models for numerical simulations are proposed to reduce computation costs. However, the development of a small model, which has to be completely identical (geometrically) to the full-scale model, is challenging. Thus, a scale law between the small- and full-scale models of a large gossamer space structure, which is geometrically non-similar to the full-scale model, is also proposed. The scale law is also applied to the spin deployment motion of thin membrane and veri fi ed using numerical simulations.
{"title":"Scaling Law for Spin Deployment of Large-Membrane Structures Acceptable for Geometrical Mismatch","authors":"Asuka Tatara, Yasuyuki Miyazaki","doi":"10.2322/tjsass.65.11","DOIUrl":"https://doi.org/10.2322/tjsass.65.11","url":null,"abstract":"There have been several advanced space missions using large gossamer space structures proposed recently, such as a spinning solar sail. However, only certain missions have been implemented, primarily because the on-orbit dynamic behavior of such structures cannot be precisely predicted through ground tests. To address this limitation, a scale law between a small- and a full-scale model of large membrane structures is proposed herein. In addition, small or reduced-order models for numerical simulations are proposed to reduce computation costs. However, the development of a small model, which has to be completely identical (geometrically) to the full-scale model, is challenging. Thus, a scale law between the small- and full-scale models of a large gossamer space structure, which is geometrically non-similar to the full-scale model, is also proposed. The scale law is also applied to the spin deployment motion of thin membrane and veri fi ed using numerical simulations.","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68664228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Capture Area Ratio and Drag Difference between Wind Tunnel and Flight Tests","authors":"Kento Yamada, T. Uchiyama, M. Ueno","doi":"10.2322/tjsass.65.134","DOIUrl":"https://doi.org/10.2322/tjsass.65.134","url":null,"abstract":"","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68664252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wakako Yamaguchi, Toshiya Yanase, Jun Ishihara, Asuka Nakatani, T. Handa, Yosuke Sugioka, S. Koike
{"title":"Study on Decay Characteristics of FLEET Emission in Air for High-resolution Measurements of Supersonic Flows","authors":"Wakako Yamaguchi, Toshiya Yanase, Jun Ishihara, Asuka Nakatani, T. Handa, Yosuke Sugioka, S. Koike","doi":"10.2322/tjsass.65.109","DOIUrl":"https://doi.org/10.2322/tjsass.65.109","url":null,"abstract":"","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68664676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Three-dimensional Shock Wave Interactions in Sabot Separation Launched in Hypersonic Regime","authors":"H. Kasahara, A. Matsuo","doi":"10.2322/tjsass.65.147","DOIUrl":"https://doi.org/10.2322/tjsass.65.147","url":null,"abstract":"","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68664373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Method of Suppressing Ingestion Particles Flowing Back to a Hall Thruster using a Beam Target during Ground Testing","authors":"G. Ito, R. Kawashima, K. Komurasaki, H. Koizumi","doi":"10.2322/tjsass.65.160","DOIUrl":"https://doi.org/10.2322/tjsass.65.160","url":null,"abstract":"","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68664458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Performance Evaluation of an Airborne Coherent Doppler Lidar and Investigation of Its Practical Application","authors":"H. Inokuchi, T. Akiyama","doi":"10.2322/tjsass.65.47","DOIUrl":"https://doi.org/10.2322/tjsass.65.47","url":null,"abstract":"","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68665704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haitong Wang, Yan’gang Wang, Si Wang, Fang Zhou, Hanru Liu
The image vortex model is widely used in lifting line method to predict the fl ow induced by the shroud and hub surface in ducted fan, but it does not perform well in lift fan design due to the zero far fi eld in fl ow. In this paper the theoretical defects and numerical error propagation characteristic of the image vortex model in simulating duct surface are studied. Then the vortex rings correction based on image vortex model is veri fi ed and applied in lifting line method. In order to test the improved method, a 150 mm diameter lift fan is designed by the modi fi ed lifting line method, after that, analyzed by the modi fi ed lifting line itself and RANS solver respectively. The results show that the contribution of the vortex rings at the rotor accounts for 50% of the total induced velocity, and it accounts for 35% at the stator, which veri fi es the necessity of the vortex rings correction. The performance of the rotor and stator geometry is consistent with the design expectation, the e ffi ciency is up to 90.97% by numerical simulation and 88.32% by experimental measurement, which con fi rms the reli-ability of the modi fi ed lifting line method developed in this paper especially on lift fan design.
{"title":"Modified Lifting Line Method Based on Vortex Rings and Its Application on Lift Fan Design","authors":"Haitong Wang, Yan’gang Wang, Si Wang, Fang Zhou, Hanru Liu","doi":"10.2322/tjsass.65.23","DOIUrl":"https://doi.org/10.2322/tjsass.65.23","url":null,"abstract":"The image vortex model is widely used in lifting line method to predict the fl ow induced by the shroud and hub surface in ducted fan, but it does not perform well in lift fan design due to the zero far fi eld in fl ow. In this paper the theoretical defects and numerical error propagation characteristic of the image vortex model in simulating duct surface are studied. Then the vortex rings correction based on image vortex model is veri fi ed and applied in lifting line method. In order to test the improved method, a 150 mm diameter lift fan is designed by the modi fi ed lifting line method, after that, analyzed by the modi fi ed lifting line itself and RANS solver respectively. The results show that the contribution of the vortex rings at the rotor accounts for 50% of the total induced velocity, and it accounts for 35% at the stator, which veri fi es the necessity of the vortex rings correction. The performance of the rotor and stator geometry is consistent with the design expectation, the e ffi ciency is up to 90.97% by numerical simulation and 88.32% by experimental measurement, which con fi rms the reli-ability of the modi fi ed lifting line method developed in this paper especially on lift fan design.","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68665191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"In-flight Profile Updates by Appropriate Cost Index Selection — Operational Perspective","authors":"Ryota Mori","doi":"10.2322/tjsass.65.56","DOIUrl":"https://doi.org/10.2322/tjsass.65.56","url":null,"abstract":"","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68665249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haoxiang Liu, Satoshi Satoh, Y. Shoji, I. Jikuya, Katsuhiko Yamada
{"title":"Selecting Initial Gimbal Angles of Roof-type CMG System for Avoiding Singularities in Spacecraft Attitude Maneuver","authors":"Haoxiang Liu, Satoshi Satoh, Y. Shoji, I. Jikuya, Katsuhiko Yamada","doi":"10.2322/tjsass.65.123","DOIUrl":"https://doi.org/10.2322/tjsass.65.123","url":null,"abstract":"","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68664239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Numerical Simulation of Jet Mixing in Supersonic Crossflow: Effect of Jet Exit Geometry","authors":"T. Iwasa, N. Tsuboi","doi":"10.2322/tjsass.65.172","DOIUrl":"https://doi.org/10.2322/tjsass.65.172","url":null,"abstract":"","PeriodicalId":54419,"journal":{"name":"Transactions of the Japan Society for Aeronautical and Space Sciences","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68664545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：