Review Papers - TAKAO Yoshinori
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TAKAO Yoshinori
Oyo Buturi 90 ( 5 ) 298 - 302 2021.5 [Reviewed] [Invited]
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：The Japan Society of Applied Physics Single Work
<p>In recent years, many nano/microsatellites have been launched in space for various applications in near-earth orbit, and they are now used even for deep-space exploration. The situation naturally requires a micropropulsion system or microthruster. It is expected that electric propulsion will play an important role in achieving the required velocity increment (⊿<i>v</i>) because nano/microsatellites have strict constraints on space and weight. In this paper, we focus on two types of microthrusters, an ion engine and an electrospray thruster, which obtain thrust by electrostatically accelerating ions, and describe their characteristics, current results, and some issues. We also introduce electron sources, which do not directly contribute to thrust but are essential components.</p><p>In recent years, many nano/microsatellites have been launched in space for various applications in near-earth orbit, and they are now used even for deep-space exploration. The situation naturally requires a micropropulsion system or microthruster. It is expected that electric propulsion will play an important role in achieving the required velocity increment (⊿<i>v</i>) because nano/microsatellites have strict constraints on space and weight. In this paper, we focus on two types of microthrusters, an ion engine and an electrospray thruster, which obtain thrust by electrostatically accelerating ions, and describe their characteristics, current results, and some issues. We also introduce electron sources, which do not directly contribute to thrust but are essential components.</p>
Other Link： https://ci.nii.ac.jp/naid/130008034658
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鷹尾 祥典
油空圧技術 59 ( 9 ) 12 - 18 2020.9
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media) Publisher：日本工業出版 Single Work
Other Link： https://www.nikko-pb.co.jp/products/detail.php?product_id=4897
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Current status of a magnetic nozzle RF plasma thruster
TAKAHASHI Kazunori, CHARLES Christine, BOSWELL Rod, TAKAO Yoshinori, ANDO Akira
Space Solar Power Systems 5 ( 0 ) 14 - 17 2020.2
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Space Solar Power Systems Society Joint Work
<p> The magnetic nozzle RF plasma thruster simply consists of a radiofrequency (RF) discharge and a magnetic nozzle. The high density plasma produced by inductively-coupled and/or helicon-wave-coupled discharge is transported along the axial magnetic field lines to the open source exit; the spontaneous plasma acceleration and momentum conversion processes seem to contribute to enhance the thrust generation. Current status of the studies on the fundamental physics and the performance improvement will be shown here.</p><p> The magnetic nozzle RF plasma thruster simply consists of a radiofrequency (RF) discharge and a magnetic nozzle. The high density plasma produced by inductively-coupled and/or helicon-wave-coupled discharge is transported along the axial magnetic field lines to the open source exit; the spontaneous plasma acceleration and momentum conversion processes seem to contribute to enhance the thrust generation. Current status of the studies on the fundamental physics and the performance improvement will be shown here.</p>
Other Link： https://ci.nii.ac.jp/naid/130007799145
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Discussion for Orbital Transfer Vehicle Using Electric Propulsion
FUNAKI Ikkoh, NAKANO Masakatsu, KOMURASAKI Kimiya, TAKAO Yoshinori, YOKOTA Shigeru, CHO Shinatora, … Show more authors
FUNAKI Ikkoh, NAKANO Masakatsu, KOMURASAKI Kimiya, TAKAO Yoshinori, YOKOTA Shigeru, CHO Shinatora, KAWASHIMA Rei Hide authors
Space Solar Power Systems 5 ( 0 ) 1 - 2 2020.2
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Publisher：Space Solar Power Systems Society Joint Work
<p> A panel discussion was held to discuss the technical challenges in orbital transfer vehicle (OTV) development using electric propulsion. Electric propulsion is advantageous in the transportation of SSPS if the solar array panel in the payload can be used in the OTV. Argon is the candidate for the propellant, and the technical issues for the development of high-power argon-propellant thruster are discussed. The collaboration with the ground launch vehicle is indispensable to attain the SSPS, in addition to the cross-field collaboration for the optimization of the OTV. The necessity of technology demonstration missions and technical roadmap is reconfirmed to promote the collaboration among the researchers.</p><p> A panel discussion was held to discuss the technical challenges in orbital transfer vehicle (OTV) development using electric propulsion. Electric propulsion is advantageous in the transportation of SSPS if the solar array panel in the payload can be used in the OTV. Argon is the candidate for the propellant, and the technical issues for the development of high-power argon-propellant thruster are discussed. The collaboration with the ground launch vehicle is indispensable to attain the SSPS, in addition to the cross-field collaboration for the optimization of the OTV. The necessity of technology demonstration missions and technical roadmap is reconfirmed to promote the collaboration among the researchers.</p>
Other Link： https://ci.nii.ac.jp/naid/130007799144
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Research and Development of Ultra-Small High-Thrust-Density Electrospray Thrusters
Yoshinori TAKAO, Toshiyuki TSUCHIYA, Masayoshi NAGAO, Katsuhisa MURAKAMI
Aeronautical and Space Sciences Japan 67 ( 1 ) 5 - 11 2019.1 [Reviewed] [Invited]
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Joint Work
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斧 高一, 鷹尾 祥典
応用物理 76 ( 4 ) 394 2007.4 [Reviewed] [Invited]
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal) Joint Work
Other Link： http://www.jsap.or.jp/ap/2007/04/ob760394.xml