Updated on 2025/04/03

写真a

 
Akihiro Sasoh
 
Organization
Graduate School of Engineering Education and Research Center for Flight Engineering Professor
Vice President, Director
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Mechanical and Aerospace Engineering
Title
Professor

Degree 1

  1. Doctor of Engineering ( 1989.3   The University of Tokyo ) 

Research Interests 1

  1. Space propulsion, Compressible fluid dynamics, High-enthalpy flow, Shock wave, Plasma, Laser, Supersonic flow

Research Areas 2

  1. Others / Others  / Fluidics

  2. Others / Others  / Aerospace Engineering

Current Research Project and SDGs 3

  1. Application of highly-repetitive pulse laser to aerospace engineering

  2. Non-chemical space propulsion

  3. Study on sonic boom

Research History 5

  1. Nagoya University   Director

    2019.4

  2. Professor, Department of Aerospace Engineering, Nagoya University   Professor

    2006.4

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    Country:Japan

  3. Professor, Institute of Fluid Science, Tohoku University   Professor

    2003.3 - 2006.3

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    Country:Japan

  4. Associate Professor,Institute of Fluid Science, Tohoku University   Associate Professor

    1991.7 - 2003.2

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    Country:Japan

  5. Research associate, Department of Aeronautics, Nagoya University   Assistant

    1989.4 - 1991.6

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    Country:Japan

Education 3

  1. The University of Tokyo   Graduate School, Division of Engineering   Aeronautics

    1986.4 - 1989.3

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    Country: Japan

  2. The University of Tokyo   Graduate School, Division of Engineering   Aeronautics

    1984.4 - 1986.3

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    Country: Japan

  3. The University of Tokyo   Faculty of Engineering   Department of Aeronautics

    1979.4 - 1984.3

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    Country: Japan

Professional Memberships 10

  1. International Shock Wave Institute

    2013.5

  2. 日本衝撃波研究会

  3. レーザー学会

  4. 日本流体力学会

  5. 日本機械学会

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Awards 4

  1. ISBEP (International Symposium on Beamed Energy Propulsion) Award

    2008.11   American Institute of Beamed Energy Propulsion  

  2. 日本航空宇宙学会論文賞

    1999.4   日本航空宇宙学会  

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    Country:Japan

  3. 日本流体力学会竜門賞

    1998.2   日本流体力学会  

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    Country:Japan

  4. トーキン科学技術振興財団 研究奨励賞

    1992.3   トーキン科学技術振興財団  

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    Country:Japan

 

Papers 207

  1. Time-and angular-distribution of ion current in pulse-laser ablation plume of aluminum Reviewed

    Yusuke Nakamura, Atsushi Isomura, Gakuto Sekine, Kei Kikuchi, Akihiro Sasoh

    Acta Astronautica   Vol. 223   page: 426 - 434   2024.10

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    Language:English  

    DOI: 10.1016/j.actaastro.2024.07.034

  2. Laser ablation impulse dependence on beam Spatial-Profile Reviewed

    Yusuke Nakamura, Daichi Moriyama, Atsushi Isomura , Akihiro Sasoh, Ka tsuhiko Tsuno, Takayo Ogawa , Satoshi Wada, Tadanori Fukushima

    Optics & Laser Technology   Vol. 169   2024.2

  3. Local geometry of a weak normal shock wave interacting with turbulence Reviewed

    Amane Kusuhata , Kento Tanaka , Tomoaki Watanabe, Koji Nagata,and Akihiro Sasoh

    Physics of Fluids   Vol. 35 ( 086110-1 ) page: 086110-14   2023.7

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    Language:English  

    DOI: 10.1063/5.0158309

  4. Investigation on Applying an InGaN Photocathode with Negative Electron Affinity for Electric Propulsion Reviewed

    Yusuke Inoue, Tomohito Nishitani,Anna Honda, Daiki Sato, Haruka Shikano, Atsushi Koizumi,Yoshio Honda, Daisuke Ichihara, Akihiro Sasoh

    Trans. Japan Soc. Aero. Space Sci. Research Note   Vol. 66   page: 10 - 13   2023.1

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    Language:English  

    DOI: 10.2322/tjsass.66.10

  5. Petal formation law in a cellophane diaphragm subjected to a pressure difference Reviewed

    Gaku Fukushima, Jun Hagiwara, Yusuke Nakamura, and Akihiro Sasoh

    PHYSICAL REVIEW E   Vol. 106   page: L043001-1 - L043001-5   2022.10

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    Language:English  

    DOI: 10.1103/PhysRevE.106.L043001

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Books 7

  1. Laser Propulsion in Space International journal

    Akihiro Sasoh( Role: Joint author)

    Elsevier  2024.6  ( ISBN:978-0-443-15903-9

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    Total pages:403   Responsible for pages:277-284   Language:English Book type:Textbook, survey, introduction

  2. Compressible Fluid Dynamics and Shock Waves

    Akihiro Sasoh( Role: Sole author)

    Springer  2020  ( ISBN:978-981-15-0503-4

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    Language:English Book type:Textbook, survey, introduction

  3. 圧縮性流体力学・衝撃波

    佐宗章弘( Role: Sole author)

    コロナ社  2017.3 

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    Language:Japanese Book type:Scholarly book

  4. ながれの事典

    神部勉(編)( Role: Joint author)

    丸善  2004 

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    Language:Japanese

  5. 電気推進ロケット入門

    栗木恭一,荒川義博(編)( Role: Joint author)

    東京大学出版会  2003 

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    Language:Japanese

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Presentations 93

  1. Square-bore ballistic range for launching three-dimensional projectiles International conference

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    Event date: 2009.7

    Language:English   Presentation type:Oral presentation (general)  

  2. Supersonic Drag Reduction with Repetitive Laser Pulses through a Blunt Body International conference

    40thAIAA Plasmadynamics and Laser Conference 

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    Event date: 2009.6

    Language:English   Presentation type:Oral presentation (general)  

  3. Supersonic Drag Reduction with Repetitive Laser Pulses through a Blunt Body International conference

    47th AIAA Aerospace Sciences Meeting 

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    Event date: 2009.1

    Language:English  

  4. Plasma Behavior Induced by Repetitive Laser Pulses

    39th Plasmadynamics and Lasers Conference, Seattle, Washington 

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    Event date: 2008.7

    Language:English  

  5. Wall-Propelled, In-Tube Propulsion with Repetitive-Pulse Laser Ablation

    39th Plasmadynamics and Lasers Conference, Seattle, Washington 

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    Event date: 2008.7

    Language:English  

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Research Project for Joint Research, Competitive Funding, etc. 1

  1. レーザー推進による衛星姿勢制御に関する研究

    2024.4 - 2025.3

    国内共同研究 

KAKENHI (Grants-in-Aid for Scientific Research) 41

  1. 時間差波動干渉による津波減衰の原理実証

    Grant number:24K21652  2024.4 - 2026.3

    科学研究費助成事業  挑戦的研究(萌芽)

    佐宗 章弘

  2. Shock Wave Moderation by Fore-Flow Nudge: Proof of Principle and Applications

    Grant number:21H04589  2021.4 - 2025.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Principal investigator 

    Grant amount:\42380000 ( Direct Cost: \32600000 、 Indirect Cost:\9780000 )

  3. Visualization measurement of plane shock wave - isotropic turbulence interaction and utilization of its statistical data

    Grant number:18H03813  2018.4 - 2021.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    Sasoh Akihiro

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    Authorship:Principal investigator 

    Grant amount:\44460000 ( Direct Cost: \34200000 、 Indirect Cost:\10260000 )

    Interaction experiments were conducted in which the condition of the interacting states were independently changed using the originally developed "Counter-Driver Shock Tube". As a result of conducting the interaction experiments in which the shock wave Mach number, the turbulent flow Mach number, and the interaction distance were independently changed, it was shown that the interaction distance had a great influence on the deformation of the shock wave front, and the conventional concept of dealing with a steady state was found insufficient to describe the observed phenomena. From the experimental results, we were able to show the importance of introducing non-stationarity. It was shown that when the shock wave Mach number was relatively low and the turbulent Mach number was high, the shock wave front disappeared in the Schlieren image when the interaction distance was about 10 times or more of the integral scale. This fact was well explained by a model based on the Riemann problem.

  4. Conceptual Study of a Space Debris Deorbit Mission

    Grant number:16H02426  2016.4 - 2019.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    Ebisuzaki Toshikazu, TAKIZAWA Yoshiyuki, SAKAKI Naoto

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    Authorship:Coinvestigator(s) 

    Space debris, in particular, cm-sized debris are important issue of space development. We performed a conceptual study for the deorbit mission by laser ablation with a high-intensity space-laser system. Among the steps of the deorbit operation of space debris, we performed the experiment of step 1; detection and step 2; tracking in the laboratory with 1/10 scale model of EUSO telescope. In addition, the optimization study revealed that the deorbit mission can work optimal condition in the sun-synchronous orbit, which can always stay in the twilight with the altitude of 600-900 km. Furthermore, we examined the ablation response for various debris materials and the way of the suppression of the rotation of them.

  5. Modulation and active control of supersonic flow by introducing artificial disturbance

    Grant number:15H02321  2015.4 - 2018.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    Sasoh Akihiro

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    Authorship:Principal investigator 

    Grant amount:\44720000 ( Direct Cost: \34400000 、 Indirect Cost:\10320000 )

    In this study, we aimed in understanding mechanisms of supersonic flow modulation by artificial disturbances, and in developing their applications to supersonic flight. A counter-driver shock tube with a 120 mm * 120 mm square-cross-section was developed so that experiments of shock wave-turbulence interaction became possible. As a result, it was experimentally demonstrated that the longer the propagation distance the more the shock wave surface became disturbed, thereby leading to the topological transition of the wave front. Moreover, by introducing repetitive laser energy pulses on to Mach 1.9 flow, the shock wave oscillation experienced frequency modulation to a low frequency regime so that total pressure loss was reduced in a supersonic duct.

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Industrial property rights 1

  1. アルコール-硝安発射薬

    佐宗章弘、高山和喜、生田一成、永易伸生、大坪信武

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    Application no:特願平11-102098  Date applied:1999.4

    Country of applicant:Domestic  

 

Teaching Experience (On-campus) 9

  1. 宇宙推進工学

    2021

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    宇宙での化学推進、非化学推進に関連する原理と応用について講義する。

  2. 航空宇宙推進工学

    2020

  3. Introduction to System Engineering

    2016

  4. Introduction to System Engineering

    2015

  5. Introduction to System Engineering

    2014

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