Curriculum Vitaes

Yasunori Nagata

  (永田 靖典)

Profile Information

Affiliation
Specially-appointed Assistant Professor, Institute of Space and Astronautical Science, Department of Space Flight Systems, Japan Aerospace Exploration Agency

J-GLOBAL ID
201801011372441836
researchmap Member ID
B000340761

Papers

 48
  • Takashi Miyashita, Yuji Sugihara, Yusuke Takahashi, Yasunori Nagata, Hisashi Kihara
    Journal of Physics D: Applied Physics, 57(32) 325206-325206, May 20, 2024  
    Abstract Communication blackouts during atmospheric reentry pose significant challenges to the safety and adaptability of spacecraft missions. This phenomenon, caused by the attenuation of electromagnetic waves by the plasma surrounding the spacecraft, disrupts communication with ground stations or orbiting satellites. Therefore, it is crucial to decrease the plasma density in the vicinity of the spacecraft to ensure an unobstructed electromagnetic wave communication path. This study proposes a methodology that involves the injection of gas from the vehicle’s wall to create an insulating layer near the surface. This thin layer maintains lower temperatures and reduced plasma density, enabling electromagnetic wave propagation without attenuation. Practical experiments were conducted in an arc-heating facility to simulate atmospheric reentry conditions. The results of the experiments provided empirical evidence of the effectiveness of the technique in mitigating communication blackout phenomena. Numerical fluid analysis within the wind tunnel chamber validated the formation of an air film layer near the experimental model owing to the injected gas. Schlieren imaging revealed distinctive jet shapes, which corroborated the findings of the numerical analysis. The wind tunnel tests that simulated atmospheric reentry environments confirmed the formation of an air film layer through gas injection, which substantiates the reduction in communication blackout. These results have the potential to improve communication reliability in space transport.
  • Hideto Takasawa, Tomoya Fujii, Yusuke Takahashi, Takahiro Moriyoshi, Hiroki Takayanagi, Yasunori Nagata, Kazuhiko Yamada
    CEAS Space Journal, Apr 26, 2024  
  • Kazuhiko YAMADA, Takahiro MORIYOSHI, Kazushige MATSUMARU, Hiroki KANEMARU, Takahiro ARAYA, Kojiro SUZUKI, Osamu IMAMURA, Daisuke AKITA, Yasunori NAGATA, Yasumasa WATANABE
    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 67(4) 224-233, 2024  

Misc.

 113
  • 柳瀬眞一郎, 山根映介, 河内俊憲, 永田靖典, 保田和則
    日本機械学会流体工学部門講演会講演論文集(CD-ROM), 97th, 2019  
  • 河内俊憲, 青山翼, 永田靖典, 柳瀬眞一郎
    日本機械学会流体工学部門講演会講演論文集(CD-ROM), 97th, 2019  
  • FUKUDA Seiya, YANASE Shinichiro, KOUCHI Toshinori, NAGATA Yasunori, MIYAI Syouma
    The Proceedings of Conference of Chugoku-Shikoku Branch, 2019 512-512, 2019  
  • ICHIKAWA Koji, NAGATA Yasunori, KOUCHI Toshinori, YANASE Shinichiro
    The Proceedings of Conference of Chugoku-Shikoku Branch, 2019 511-511, 2019  
  • INOUE Yuki, NAGATA Yasunori, KOUCHI Toshinori, YANASE Shinichiro
    The Proceedings of Conference of Chugoku-Shikoku Branch, 2019 515-515, 2019  
  • Nagata Yasunori, Yamada Kazuhiko, Suzuki Kojiro, Imamura Osamu
    JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 67(1) 1-8, 2019  Peer-reviewed
    <p>The satellite communication system without ground antennas is highly beneficial to ease construction and maintenance of the ground station. To realize it, the Iridium communication service which is consisted of 66 satellites on the LEO (Low-Earth Orbit) is focused. The telemeter and command data are transmitted and received through the Internet, Iridium ground station, and Iridium satellites. Then, only a PC connecting to the Internet is required for the present telecommunication system. To demonstrate this concept, the EGG (re-Entry satellite with Gossamer aeroshell and GPS/iridium) nanosatellite mission was conducted in 2017, which is the first satellite operated via only the Iridium SBD (Short Burst Data) communication. In this paper, the communication performance of the Iridium communication applied to LEO satellite is investigated and the EGG mission result is described. Trajectory-based simulation shows that the present system will function well even under the Doppler shift criteria, though the available time rate will be degraded. Actually, it worked successfully on the EGG mission regardless of the satellite location. Moreover, the telemeter data was acquired in semi-real time manner on the atmospheric-entry phase, which is very difficult for the ordinary ground antenna system. This should be the important feature of the present system. </p>
  • Nagata Yasunori, Ishihara Ryoichi, Maeda Shingo, Kouchi Toshinori, Yanase Shinichiro
    JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 67(1) 16-24, 2019  Peer-reviewed
    <p>The electrodynamic heat shield is new type of heat protection system for atmospheric-entry vehicle, which utilizes the Lorentz force acting on the weakly ionized plasma flow inside the shock layer. A huge amount of calculation is necessary to estimate overall effect of the electrodynamic heat shield, because its effect interacts with the atmospheric-entry trajectory. In the present study, the Viscous Shock Layer (VSL) analysis method for electrodynamic heat shield is proposed for the quick analysis, which can calculate much faster than Navier-Stokes (NS) simulation. For this purpose, the VSL equations for the electrodynamic heat shield analysis are introduced under the ideal gas assumption, including circumferential momentum equation and Maxwell equations. The new method is also proposed to solve the new VSL equations. By the comparison to the NS simulation, the new VSL method gives good estimations of drag force and wall heat flux for wide ranges of interaction parameter and Hall parameter although the slight difference of wall heat flux at the stagnation point is observed. Therefore, the present VSL method could be applicable to the estimation tool of the electrodynamic heat shield effect. </p>
  • 永田靖典, 乗井拓己, 河内俊憲, 柳瀬眞一郎
    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM), 50th-36th, 2018  
  • 河内俊憲, 福田征弥, 永田靖典, 柳瀬眞一郎
    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM), 50th-36th, 2018  
  • 溝口真由, 渡部達也, 河内俊憲, 永田靖典, 柳瀬眞一郎
    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM), 50th-36th, 2018  
  • YANASE Shinichiro, AOYAMA Tsubasa, KOUCHI Toshinori, NAGATA Yasunori, MIYOSHI Yuki
    The Proceedings of the Fluids engineering conference, 2018 OS15-6, 2018  
    <p>In semiconductor production, efficiency and precision of the cleaning process are very important. In this study, we handle "Single Wafer Cleaner" that is one of the washing methods in the way of blowing air to a wafer with a turning disk at a high speed. However, the flow in the device becomes turbulent, which causes the problem that water drops and dusts re-attach to the wafer surface. Therefore, it is necessary to understand the flow in the device exactly to solve this problem. In previous studies, we experimented to establish the method of understanding the flow in the semiconductor wafer cleaner without a covering cup that is used for liquid splash preventing. In this study, numerical calculations were performed to observe the flow in the device to study influence of covering cup and find a suitable turbulence model to simulate the experiment.</p>
  • YANASE Shinichiro
    The Proceedings of the Fluids engineering conference, 2018 OS15-11, 2018  
    <p>We conducted numerical simulations of the benchmark experiments of the pump sump conducted by Matsui et al. (2006 & 2015) and compared the simulation with the experimental data to investigate the effects of turbulence model, grid density and detection method of the vortices. We determined a threshold of the gas-liquid fraction function of VOF method (α) and the second invariant of velocity gradient tensor (Q2) to detect the air-entraining and submerged vortices by using vorticity, respectively. This method well detected the vortices and well reproduced the experiments for the RANS simulation using SST k-ω model. Large eddy simulation using Smagorinsky model, however, was sensitive to the grid system and difficult to reproduce the experimental vortex structures even for the finest grid system having 3.7 mil-lion cells.</p>
  • HIRAO Masataka, YANASE Shinichiro, KOUCHI Toshinori, NAGATA Yasunori, MIYAZATO Takeshi
    The Proceedings of Conference of Chugoku-Shikoku Branch, 2018 608-608, 2018  
  • UENISHI Masanobu, GUAN Chao, YANASE Shinichiro, KOUCHI Toshinori, NAGATA Yasunori
    The Proceedings of Conference of Chugoku-Shikoku Branch, 2018 615-615, 2018  
  • YAMADA Kazuhiko, SUZUKI Kojiro, ABE Takashi, AKITA Daisuke, IMAMURA Osamu, NAGATA Yasunori, TAKAHASHI Yusuke
    Aeronautical and Space Sciences Japan, 65(11) 333-340, Nov, 2017  
  • Anup Kumer DATTA, Yasutaka HAYAMIZU, Toshinori KOUCHI, Yasunori NAGATA, Kyoji YAMAMOTO, Shinichiro YANASE
    Proceedings of the 13th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows, ISAIF-S-0015, May, 2017  Peer-reviewed
  • 山田和彦, 森吉貴大, 松丸和誉, 金丸拓樹, 荒谷貴洋, 鈴木宏二郎, 今村宰, 秋田大輔, 永田靖典, 莊司泰弘, 高橋裕介, 渡邊保真, 安部隆士
    宇宙科学技術連合講演会講演集(CD-ROM), 61st, 2017  
  • 大元朝斗, 松永明, 佐藤直也, 河内俊憲, 永田靖典, 柳瀬眞一郎
    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM), 49th-35th, 2017  
  • 溝口真由, 山内一樹, 河内俊憲, 永田靖典, 柳瀬眞一郎
    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM), 49th-35th, 2017  
  • GUAN Chao, 柳瀬眞一郎, 松浦宏治, 河内俊憲, 永田靖典
    数値流体力学シンポジウム講演論文集(CD-ROM), 31st, 2017  
  • KOUCHI Toshinori, MIYOSHI Yuki, NAKANO Yusuke, NAGATA Yasunori, YANASE Shinichiro
    Transactions of the JSME (in Japanese), 83(845) 16-00441-16-00441, 2017  Peer-reviewed
    <p>Fluctuating pressure (p' ) of a large-scale vortical structure generated in a semiconductor single wafer spin cleaner was detected by using microphone array. Twelve microphones were installed on the exhaust cover under the rotating disk of the cleaner with their interval of 7.5° or 15°. Power spectrum densities (PSD) of p' were compared with those of fluctuating velocity measured by PIV for various rotation angular velocities to identify fluctuations due to convection of the large-scale vortical structure. Good agreement of PSDs indicates that the large-scale structure could be detected by using microphone. Cross-correlation of p' measured at different positions revealed that the large-scale structure convected to the downstream in the rotational direction of the disk. The convection speed was about 12 % of the angular velocity of the rotating disk. Number of the vortex in the large-scale structure was also evaluated from the time-series p' data. Time-space contour map was made for p' based on the data measured at the different angular position, and showed periodical swept strip patterns. Presences of the strip patterns indicate the pressure disturbances were stably convected to the downstream. From this time-space map, two-dimensional Fourier transform efficiently extracted the number of vortices in the large-scale structure.</p>
  • YAMASAKI Ryo, KOUCHI Toshinori, NAGATA Yasunori, YANASE Shinichiro
    Transactions of the JSME (in Japanese), 83(853) 17-00181-17-00181, 2017  Peer-reviewed
    <p>Numerical prediction of air-entraining and submerged vortices in pump sumps is important for engineering applications. The validation of pump sump simulations, however, still is not enough, because the simulations is very complicated; for examples, treatment of gas-liquid interface, detection method of the vortices and selection of turbulence model etc. We conducted numerical simulations of the benchmark experiments of the pump sump conducted by Matsui et al. (2006, 2016) and compared the simulation with the experimental data to investigate the effects of turbulence model, grid density and detection method of the vortices. We determined a threshold of the gas-liquid fraction function of VOF method (α) and the second invariant of velocity gradient tensor (Q2) to detect the air-entraining and submerged vortices by using vorticity, respectively. This method well detected the vortices and well reproduced the experiments for the RANS simulation using SST k-ω model. Large eddy simulation using Smagorinsky model, however, was sensitive to the grid system and difficult to reproduce the experimental vortex structures even for the finest grid system having 3.7 million cells.</p>
  • TOKUZEN Kazuhito, TAKASAKI Reiji, YANASE Shinichiro, KOUCHI Toshinori, NAGATA Yasunori
    The Proceedings of Conference of Chugoku-Shikoku Branch, 2017 K0412, 2017  
  • 永田靖典
    ISASニュース, (422) 1‐3, May, 2016  
  • 松永明, 佐藤直也, 河内俊憲, 永田靖典, 柳瀬眞一郎
    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM), 48th-34th, 2016  
  • KMAKURA Taiki, KOUCHI Toshinori, NAGATA Yasumori, YANASE Shinichiro
    The Proceedings of Conference of Chugoku-Shikoku Branch, 2016 _1217-1_-_1217-3_, 2016  
  • GUAN Chao, YANASE Shinichiro, KOUCHI Toshinori, NAGATA Yasunori, MATSUURA Koji
    The Proceedings of Conference of Chugoku-Shikoku Branch, 2016 _1407-1_-_1407-2_, 2016  
  • MIYOSHI Yuki, NAKANO Yusuke, KOUCHI Toshinori, NAGATA Yasunori, YANASE Shinichiro
    The Proceedings of the Fluids engineering conference, 2016 107-107, 2016  
    <p>In semiconductor production, efficiency and precision of the cleaning process is important. In this study, we handle "Single Wafer Cleaner" that is one of the washing methods in the way of blowing air to a wafer with a turning disk at a high speed. However, the flow in the device becomes turbulence, which causes a problem that water drops and dusts re-attach to the wafer. It is necessary to understand the flow in the device. In previous investigations, we were able to get knowledge of the detection of vortices using numerical computation and Particle Image Velocimetry analysis in using the simplified experiment model. Therefore, we tried to understand the detection of large-scale vortices combining speed data and the unsteady pressure data. We measure pressure using microphones and perform the frequency analysis and cross correlation of the data. In doing so, we have get the knowledge of the vortical structure.</p>
  • OKAMOTO Takuya, SHOUDA Keisuke, KOUCHI Toshinori, NAGATA Yasunori, YANASE Shinichiro
    The Proceedings of the Fluids engineering conference, 2016 105-105, 2016  
    <p>It is known that the critical Reynolds number of turbulent transition in the straight-pipe flow is about 2300. However, it is reported that turbulent transition is delayed when there are micro-bubbles in water. And the drag was reduced in same Reynolds number range. To confirm the effect of the drag reduction, it is important to make a laminar flow at the entrance of the test section. To keep flow stable, we ensure the long entrance section of about 4 m. Then we measured the differential pressure and calculated friction factor in the straight pipe with circular cross section. The inner diameter of the pipe is 20 mm. In this experiment, turbulent transition took place at the same Reynolds number range when we use water with micro-bubbles and without micro-bubbles.</p>
  • 山田 和彦, 安部 隆士, 鈴木 宏二郎, 今村 宰, 秋田 大輔, 永田 靖典, 高橋 裕介, MAAC研究開発グループ, Yamada Kazuhiko, Abe Takashi, Suzuki Kojiro, Imamura Osamu, Akita Diasuke, Nagata Yasunori, Takahashi Yusuke, MAAC Research Group
    大気球シンポジウム: 平成27年度 = Balloon Symposium: 2015, Nov, 2015  
    大気球シンポジウム 平成27年度(2015年11月5-6日. 宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)), 相模原市, 神奈川県資料番号: SA6000044004レポート番号: isas15-sbs-004
  • 永田 靖典, 柳瀬 眞一郎, 山田 和彦, Nagata Yasunori, Yanase Shinichiro, Yamada Kazuhiko
    大気球シンポジウム: 平成27年度 = Balloon Symposium: 2015, Nov, 2015  
    大気球シンポジウム 平成27年度(2015年11月5-6日. 宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)), 相模原市, 神奈川県資料番号: SA6000044012レポート番号: isas15-sbs-012
  • Nagata Yasunori, Yamada Kazuhiko, Abe Takashi
    宇宙航空研究開発機構特別資料 JAXA-SP-, (14) 29-34, Mar 25, 2015  
    46th Fluid Dynamics Conference / 32nd Aerospace Numerical Simulation Symposium (July 3-4, 2014. Hirosaki Bunka Center), Hirosaki, Aomori, JapanIn the electrodynamic flow control, weakly-ionized plasma flow behind the strong shock wave could be controlled by the applied magnetic field around a reentry vehicle. To control the field, a very strong magnetic field is required and it could be applied by the superconducting magnet. However, the superconducting magnet system, including a superconducting magnetic coil, an electrical current source, a cooling mechanism, and refrigerant, is large and heavy for a reentry capsule such as the Hayabusa capsule. Thus, in this study, to avoid the use of the superconducting magnet, the electrodynamic effect by multiple weaker magnets such as permanent magnets is numerically investigated. According to the MHD simulation, the drag force can be also enhanced by the multiple magnets and it is clearly affected by the magnet array. Especially, the aerodynamic force part is significantly affected because the wall pressure is varied near the magnet. Therefore, the multiple magnet array might be as effective as the strong single magnet for the electrodynamic flow control.Physical characteristics: Original contains color illustrations
  • Nagata Yasunori, Yamada Shuhei, Yamada Kazuhiko, Abe Takashi
    宇宙航空研究開発機構特別資料 JAXA-SP-, (14) 57-62, Mar 25, 2015  
    46th Fluid Dynamics Conference / 32nd Aerospace Numerical Simulation Symposium (July 3-4, 2014. Hirosaki Bunka Center), Hirosaki, Aomori, JapanIn the electrodynamic flow control, a weakly-ionized plasma flow behind the strong shock wave could be controlled by the applied magnetic field around a reentry vehicle. It could be an innovative technology for reentry vehicle design because it will realize an aerodynamic control device without moving part. To demonstrate this technology on the flight condition, a light-weight, compact, and strong magnetic field source must be required, which must be able to be magnetized tesla order. We have developed a prototype magnetic field source which contains a superconducting bulk magnet cooled by solid nitrogen and it was applied to some experiments including HIEST wind tunnel test. However, the prototype model has some problems for the magnetizing and cooling processes, which has significant impact on the flight operation. Therefore, the next model is planned to improve and ease the operation by using a Stirling refrigerator instead of liquid refrigerant.Physical characteristics: Original contains color illustrations
  • 佐藤直也, 河内俊憲, 永田靖典, 柳瀬眞一郎, 阿倍浩司
    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM), 47th-33rd, 2015  
  • 関谷洸希, 山口真伍, 河内俊憲, 柳瀬眞一郎, 永田靖典
    可視化情報学会誌, 35(Suppl.1), 2015  
  • Nagata Yasunori, Yanase Shinichiro, Yamada Kazuhiko, Abe Takashi
    The Proceedings of The Computational Mechanics Conference, 2015 _315-1_-_315-2_, 2015  
  • WATANABE Ryuhei, SHIMAZU Yusuke, HATTORI Morimasa, NAGATA Yasunori, YAMADA Kazuhiko, ABE Takashi, TEZUKA Asei
    The Proceedings of the Fluids engineering conference, 2015 _0808-1_-_0808-5_, 2015  
    The aerodynamic force enhancement effect occurs by applying magnetic field around a reentry vehicle in a weekly-ionized flow behind the strong detached shock wave. Recently, this force enhancement effect was experimentally investigated using an expansion tube which can produce high speed and high enthalpy flow. Because aerodynamic force measurement is difficult due to short test flow period in expansion tube, drag measurement system which employed a piezofilm with fast responsiveness was developed in this study. This drag measurement system was calibrated using CO2 pulse laser and applied to experimental investigation on the aerodynamic force enhancement effect in expansion tube. The aerodynamic force acting on simple models in the flow produced by the expansion tube can be measured in this system. Additionally, the increase of the drag force due to magnetization in a weekly-ionized flow was observed.
  • MASUDA Takuya, NAGATA Yasunori, KOUCHI Toshinori, HAYAMIZU Yasutaka, YANASE Shinichiro
    The Proceedings of Conference of Chugoku-Shikoku Branch, 2015 _1215-1_-_1215-2_, 2015  
  • KOUCHI Toshinori, FUKUDA Naoya, NAKANO Yusuke, SHIMIZU Yoshiya, NAGATA Yasunori, YANASE Shinichiro
    Transactions of the JSME (in Japanese), 81(829) 15-00273-15-00273, 2015  Peer-reviewed
    We experimentally and numerically investigated large-scale structures formed by vortices in a single wafer spin cleaner. The Q-criterion identified the vortices developed in the cleaner as the flow regions with positive second invariant of the velocity gradient tensor obtained by both the PIV and LES. The time-series two-components PIV data shows that small-vortices were clustered near and under the edge of the rotating disk and were periodically emanated from there to the housing wall of the cleaner. The emanation frequency was increased with increasing in the angular velocity of the rotating disk. Three-dimensional LES reveal that six longitudinal vortices were spirally developed from under the edge of the rotating disk to the housing wall. This structure stably rotated slower than the disk speed. Fourier analysis of the LES data agreed with that of the PIV data. This supports that the passages of the stable spiral vortices on the PIV measurement region resulted in the periodical emanation of the clustered small-vortices observed in the PIV. Such a very large-scale spiral structure will induce reattachment of contaminants on the wafer surface, and should be destructed for development of much higher efficient cleaner.
  • 山内一樹, 河合辰哉, 河内俊憲, 永田靖典, 柳瀬眞一郎
    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM), 47th-33rd ROMBUNNO.2C15, 2015  
  • 山田 和彦, 安部 隆士, 鈴木 宏二郎, 今村 宰, 秋田 大輔, 永田 靖典, 高橋 裕介, Yamada Kazuhiko, Abe Takashi, Suzuki Kojiro, Imamura Osamu, Akita Diasuke, Nagata Yasunori, Takahashi Yusuke
    大気球シンポジウム: 平成26年度 = Balloon Symposium: 2014, Nov, 2014  
    大気球シンポジウム 平成26年度(2014年11月6-7日. 宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)), 相模原市, 神奈川県資料番号: SA6000021009レポート番号: isas14-sbs-009
  • 今村 宰, 山田 和彦, 鈴木 宏二郎, 安部 隆士, 秋田 大輔, 永田 靖典, 高橋 裕介, Imamura Osamu, Yamada Kazuhiko, Suzuki Kojiro, Abe Takashi, Akita Diasuke, Nagata Yasunori, Takahashi Yusuke
    大気球シンポジウム: 平成26年度 = Balloon Symposium: 2014, Nov, 2014  
    大気球シンポジウム 平成26年度(2014年11月6-7日. 宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)), 相模原市, 神奈川県資料番号: SA6000021010レポート番号: isas14-sbs-010
  • Nagata Yasunori, Satofuka Yu, Watanabe Yoshinari, Yamada Kazuhiko, Abe Takashi
    (13) 53-58, Mar 31, 2014  
    45th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2013 (July 4-5, 2013. Tower Hall Funabori), Tokyo, JapanIn the electrodynamic flow control, a weakly-ionized plasma flow behind the strong shock wave could be controlled by the applied magnetic field around a reentry vehicle. The magnetic field configuration is a controllable parameter, and then, the magnetic field can be inclined to the body axis to generate the asymmetric field. Recently, the influence of the inclined magnetic field was experimentally and numerically investigated. However, they didn't agree qualitatively about the in-plane component of the side force based on the plane defined by the body axis and the magnetic pole. Meanwhile, when the magnetic field is inclined, the out-plane component of the side force acts on the body due to the Hall effect according to the MHD simulation, but it was not yet confirmed experimentally. Then, in this study, the side force acting on the magnetized body was investigated using the arcjet wind tunnel and the MHD simulation. As a result, we confirmed that the out-plane force is clearly measured and its direction agrees with the MHD simulation. The inclination angle dependency of the magnetic field on the in-plane force is significantly affected by the plume size. The experimental result is similar to the MHD simulation in which the finite plume size is considered like the experiment.Physical characteristics: Original contains color illustrations
  • 奥田謙太朗, 森吉貴大, 土井翔平, 宮谷聡, 山田和彦, 鈴木宏二郎, 安部隆士, 永田靖典, 今村宰, 秋田大輔, 高橋裕介
    宇宙科学技術連合講演会講演集(CD-ROM), 58th, 2014  
  • YAMADA Kazuhiko, SUZUKI Kojiro, NAGATA Yasunori, HONMA Naohiko, AKITA Daisuke, ISHIMURA Kosei, IMAMURA Osamu, NAKASHINO Kyoichi, HAYASHI A. Koichi, ABE Takashi
    Aeronautical and Space Sciences Japan, 62(11) 350-350, 2014  Peer-reviewed
  • 山田 和彦, 永田 靖典, 秋田 大輔, 今村 宰, 安部 隆士, 鈴木 宏二郎, 柔軟構造大気突入機(MAAC)研究グループ, Yamada Kazuhiko, Nagata Yasunori, Akita Daisuke, Imamura Osamu, Abe Takashi, Suzuki Kojiro
    宇宙航行の力学シンポジウム: 平成24年度 = Symposium on Flight Mechanics and Astrodynamics: 2012, 116-119, Dec, 2013  
    平成24年度宇宙航行の力学シンポジウム(2012年12月13日-14日. 宇宙航空研究開発機構宇宙科学研究所), 相模原市, 神奈川県資料番号: SA6000010028
  • 山田 和彦, 安部 隆士, 永田 靖典, 高橋 裕介, 秋田 大輔, 今村 宰, 鈴木 宏二郎, 柔軟構造大気突入機(MAAC)研究グループ, Yamada Kazuhiko, Abe Takashi, Nagata Yasunori, Takahashi Yusuke, Akita Daisuke, Imamura Osamu, Suzuki Kojiro
    宇宙航行の力学シンポジウム: 平成24年度 = Symposium on Flight Mechanics and Astrodynamics: 2012, 136-139, Dec, 2013  
    平成24年度宇宙航行の力学シンポジウム(2012年12月13日-14日. 宇宙航空研究開発機構宇宙科学研究所), 相模原市, 神奈川県資料番号: SA6000010033

Books and Other Publications

 1
  • Marić Tomislav, Höpken Jens, Mooney Kyle, 柳瀬 真一郎, 高見 敏弘, 早水 庸隆, 早水 英美, 権田 岳, 武内 秀樹, 永田 靖典
    森北出版, 2017 (ISBN: 9784627670914)

Presentations

 67

Teaching Experience

 1

Research Projects

 8