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Ultracompact electrospray space propulsion that can dramatically increase thrust density and secure redundant system

Research Project

Project/Area Number 18H01623
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 24010:Aerospace engineering-related
Research InstitutionYokohama National University

Principal Investigator

TAKAO Yoshinori  横浜国立大学, 大学院工学研究院, 准教授 (80552661)

Co-Investigator(Kenkyū-buntansha) 土屋 智由  京都大学, 工学研究科, 教授 (60378792)
長尾 昌善  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 研究グループ長 (80357607)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywordsエレクトロスプレー / イオン液体 / イオンビーム / 電気推進 / 超小型衛星 / 電界放出 / 高密度
Outline of Final Research Achievements

To improve the thrust density of electrospray thrusters using ionic liquids as the propellant that can be mounted on micro/nanosatellites, we have fabricated a high-density emitter array utilizing the fabrication technique of a field emitter array or gated nano electron sources. The density of the emitter array can reach approximately 4 million per square centimeter, which is four orders of magnitude higher than that of conventional electrospray thrusters. An ion emission experiment has shown that the maximum current density was 43 mA per square centimeter, which was more than 100 times higher than that of conventional electrospray thrusters.

Academic Significance and Societal Importance of the Research Achievements

超小型衛星に軌道遷移の自由度を与え、かつ、運用終了後のデブリ化を防止するためにも、高性能な超小型宇宙推進機が求められている。その有力候補は、理論的には100%の推進効率が実現可能なエレクトロスプレー推進機であるが、超小型衛星にとっても推力が1桁以上小さい問題を抱えていた。本研究を遂行することにより、上述の通り従来比で2桁以上の推力密度増加となり得る結果となり、超小型衛星の活躍の場を広げる推進機になる可能性を示した。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (28 results)

All 2021 2020 2019 2018 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (22 results) (of which Int'l Joint Research: 7 results) Remarks (2 results)

  • [Journal Article] Fabrication of nano-capillary emitter arrays for ionic liquid electrospray thrusters2021

    • Author(s)
      Suzuki Kanta、Nagao Masayoshi、Liu Yongxun、Murakami Katsuhisa、Khumpuang Sommawan、Hara Shiro、Takao Yoshinori
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SC Pages: SCCF07-SCCF07

    • DOI

      10.35848/1347-4065/abf2d5

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Uniform needle-emitter arrays for ionic liquid electrospray thrusters with precise thrust control2021

    • Author(s)
      Tachibana Fumiya、Tsuchiya Toshiyuki、Takao Yoshinori
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SC Pages: SCCL06-SCCL06

    • DOI

      10.35848/1347-4065/abe997

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Research and Development of Ultra-Small High-Thrust-Density Electrospray Thrusters2019

    • Author(s)
      鷹尾 祥典、土屋 智由、長尾 昌善、村上 勝久
    • Journal Title

      Aeronautical and Space Sciences Japan

      Volume: 67 Issue: 1 Pages: 5-11

    • DOI

      10.14822/kjsass.67.1_5

    • NAID

      130007542890

    • ISSN
      0021-4663, 2424-1369
    • Year and Date
      2019-01-05
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication of a high-density emitter array for electrospray thrusters using field emitter array process2019

    • Author(s)
      Inoue Naoki、Nagao Masayoshi、Murakami Katsuhisa、Khumpuang Sommawan、Hara Shiro、Takao Yoshinori
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Issue: SE Pages: SEEG04-SEEG04

    • DOI

      10.7567/1347-4065/ab0fee

    • NAID

      210000156225

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ナノキャピラリエミッタを有する高実装密度エレクトロスプレースラスタのイオン放出実験2021

    • Author(s)
      鈴木貫太, 長尾昌善, 柳永勛, 村上勝久, クンプアンソマワン, 原史朗, 鷹尾祥典
    • Organizer
      令和2年度 宇宙輸送シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] エレクトロスプレースラスタの一様なエミッタアレイ電極作製とイオン放出実験2021

    • Author(s)
      橘郁哉, 森田寛之, 土屋智由, 鷹尾祥典
    • Organizer
      令和2年度 宇宙輸送シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Fabrication of Nano-Capillary Emitter Arrays for Ionic Liquid Electrospray Thrusters2020

    • Author(s)
      Kanta Suzuki, Masayoshi Nagao, Yongxun Liu, Katsuhisa Murakami, Sommawan Khumpuang, Shiro Hara, and Yoshinori Takao
    • Organizer
      33rd International Microprocesses and Nanotechnology Conference (MNC 2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ionic Liquid Electrospray Thrusters with Uniform Needle-Emitter Arrays for Precise Thrust Control2020

    • Author(s)
      Fumiya Tachibana, Toshiyuki Tsuchiya, and Yoshinori Takao
    • Organizer
      33rd International Microprocesses and Nanotechnology Conference (MNC 2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 精密推力制御に向けたエレクトロスプレースラスタのイオンビーム特性評価2020

    • Author(s)
      勝田紘英, 鷹尾祥典
    • Organizer
      第64回 宇宙科学技術連合講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] イオン液体エレクトロスプレースラスタの二段電極作製に向けたガラス貫通加工の検討2020

    • Author(s)
      西邑亜香音, 鷹尾祥典, 土屋智由
    • Organizer
      第37回「センサ・マイクロマシンと応用システム」シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] エレクトロスプレースラスタにおけるイオン液体構成によるイオン引き出しの変化2020

    • Author(s)
      榎本 昂明, 鷹尾 祥典
    • Organizer
      令和元年度 宇宙輸送シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Development of Ionic Liquid Electrospray Thrusters with a Massive Emitter Array for Higher Thrust Density2019

    • Author(s)
      Yoshinori Takao, Naoki Inoue, Kanata Suzuki, Fumiya Tachibana, Masayoshi Nagao, Katsuhisa Murakami, and Toshiyuki Tsuchiya
    • Organizer
      36th International Electric Propulsion Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Molecular Dynamics Simulations of Nanodroplet Break-up for Ionic Liquid Electrospray Thrusters2019

    • Author(s)
      Takaaki Enomoto and Yoshinori Takao
    • Organizer
      36th International Electric Propulsion Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Molecular Dynamics Simulations of Extracted Ions for Electrospray Thrusters2019

    • Author(s)
      Takaaki Enomoto and Yoshinori Takao
    • Organizer
      Joint Symposium 32nd ISTS & 9th NSAT
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2段電極一体化構造のイオン液体エレクトロスプレースラスタの試作2019

    • Author(s)
      松本有紀子, 橘郁哉, 土屋智由, 鷹尾祥典
    • Organizer
      第36回「センサ・マイクロマシンと応用システム」シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] エレクトロスプレースラスタの高密度エミッタアレイ作製とイオン引き出し実験2019

    • Author(s)
      鈴木 貫太,井上 直樹,長尾 昌善,村上 勝久,クンプアン ソマワン,原 史朗,鷹尾 祥典
    • Organizer
      電子デバイス研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] MEMS加工技術を利用したエレクトロスプレースラスタの作製とイオンビーム計測2019

    • Author(s)
      橘 郁哉,土屋 智由,鷹尾 祥典
    • Organizer
      第63回宇宙科学技術連合講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 超高密度実装エレクトロスプレースラスタのための微細キャピラリ・ニードル型エミッタ電極の作製2019

    • Author(s)
      鈴木 貫太,長尾 昌善,村上 勝久,クンプアン ソマワン,原 史朗,鷹尾 祥典
    • Organizer
      第63回宇宙科学技術連合講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高密度キャピラリ・ニードル型エミッタ電極を有するエレクトロスプレーイオン源の作製2019

    • Author(s)
      鈴木貫太,長尾昌善,村上勝久,クンプアンソマワン,原史朗,鷹尾祥典
    • Organizer
      2019年 日本表面真空学会 学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 分子動力学計算によるエレクトロスプレースラスタの発散イオンビーム解析2019

    • Author(s)
      榎本昂明, 鷹尾祥典
    • Organizer
      日本航空宇宙学会 第50期定時社員総会および年会講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高エミッタ密度エレクトロスプレースラスタのイオン引き出し実現に向けたエミッタ電極表面の濡れ性操作2019

    • Author(s)
      井上直樹, 長尾昌善, 村上勝久, クンプアンソマワン, 原史朗, 鷹尾祥典
    • Organizer
      平成30年度 宇宙輸送シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] 超小型宇宙推進機が求めるイオン源と電子源2019

    • Author(s)
      鷹尾祥典
    • Organizer
      2019年Cupalシンポジウム、第16回真空ナノエレクトロニクスシンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] Fabrication of Electrospray Thrusters with a High-Density Emitter Array Utilizing Minimal-Fab System2018

    • Author(s)
      Naoki Inoue, Masayoshi Nagao, Katsuhisa Murakami, Sommawan Khumpuang, Shiro Hara, and Yoshinori Takao
    • Organizer
      31st International Vacuum Nanoelectronics Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fabrication of a high-density emitter array for electrospray thrusters using field emitter array process2018

    • Author(s)
      Naoki Inoue, Masayoshi Nagao, Katsuhisa Murakami, Sommawan Khumpuang, Shiro Hara, and Yoshinori Takao
    • Organizer
      40th International Symposium on Dry Process
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 超小型人工衛星に搭載可能なマイクロ電気推進機2018

    • Author(s)
      鷹尾祥典, 土屋智由, 長尾昌善, 村上勝久
    • Organizer
      安全工学シンポジウム2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] 高密度エミッタアレイを有するエレクトロスプレースラスタのイオン引き出し実験2018

    • Author(s)
      井上直樹, 長尾昌善, 村上勝久, クンプアンソマワン, 原史朗, 鷹尾祥典
    • Organizer
      第62回宇宙科学技術連合講演会
    • Related Report
      2018 Annual Research Report
  • [Remarks]

    • URL

      http://www.takao-lab.ynu.ac.jp/

    • Related Report
      2020 Annual Research Report
  • [Remarks] Takao Lab

    • URL

      http://www.takao-lab.ynu.ac.jp/

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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