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Researcher Information

last modified：2025/03/25

Assistant Professor　OTSUKA, Hikaru

Laboratory Website

Faculty, Affiliation

Faculty of Frontier Engineering,Institute of Science and Engineering
Assistant Professor

College and School Educational Field

Division of Frontier Engineering, Graduate School of Natural Science and Technology

Laboratory

Aerospace system laboratory　https://aero.w3.kanazawa-u.ac.jp/cgi-bin/wiki.cgi　TEL:076-234-4713

Academic Background

【Academic background(Doctoral/Master's Degree)】
Tohoku University　Doctor　Department of Engineering　Aerospace Engineering　201803　Completed
Tohoku University　Master　Enginnering　Aerospace Enginnering　201503　Completed
【Academic background(Bachelor's Degree)】
Tohoku University　Mechanics and Aerospace Engineering　201303
【Degree】
PhD

Career

Kanazawa University　Institute of Science and Engineering　Assistant Professor(2022/01-)
(2018/04-2022/01)
(2016/04-2018/03)

Year & Month of Birth

Academic Society

American Institute of Aeronautics and Astronautics(AIAA)
THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES(JSASS)

Award

THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES(JSASS)
○Best Paper of UAV III Session, 6th Asian-Australian Rotorcraft Forum & Heli Japan 2017(2017/11/09)
○Good Presentation Award, 46th Meeting of JSASS(In Japanese)(2015/04/20)
○Good Presentation Award for Student, Meeting of North Branch of JSASS(In Japanese)(2014/03/01)

Specialities

Aerospace engineering、Fluid Dynamics、Field Robotics, Unmanned Aerial Vehicle

Speciality Keywords

Wind Tunnel,Multirotor UAV,UAV,Rotor,Aerospace Engineering,Aerodynamics

Research Themes

Rotor Aerodynamics of UAVs

Rotor Aerodynamics of UAVs

Books

Papers

  • 　Thrust variations in small rotors due to corner and vertex effects on the ground side　Hikaru Otsuka,Shunei, Akaba, Taisei Hara, Hiroki Nagai, and Hiroshi Tokutake　The Aeronautical Journal　129　1334　2025/01/27　
  • 　In-flight Rotor Blade Tip Damage Detection of Small Multirotor using Ultrasonic Sensors　Hikaru Otsuka, Akihiro Kawasaki, Hiroshi Tokutake　Transactions of the Japan Society for Aeronautical and Space Sciences　67　4　203-211　2024/07/04　
  • 　Single-Use Aircraft Launch System with Small Helium Balloon for 1 kPa Flight Testing　Hikaru Otsuka, Hiromi Ueno, Renta Oishi, Naoki Hayashi, Ryoma Nakayama, and Hiroshi Tokutake　Journal of Robotics and Mechatronics　36　5　1167-1178　2024/10/20　
  • 　Fountain Flow Visualization in Quadrotor Wake Decreasing Rotor Thrust in-Ground Effect　Hikaru Otsuka, Masayoshi Kohno, Keiji Nagatani　Journal of Aircraft　61　3　761-773　2024/05/01
  • 　Volcanic Ash Observation in Active Volcano Areas using Teleoperated Mobile Robots - Introduction to Our Robotic-Volcano-Observation Project and Field Experiments　Keiji Nagatani,Ken Akiyama,Genki Yamauchi,Hikaru Otsuka,Takuma Nakamura,Seiga Kiribayashi,Kazuya Yoshida,Yasushi Hada,Shini'chi Yuta,Kenichi Fujino,Tomoyuki Izu,Randy Mackay　2013 IEEE INTERNATIONAL SYMPOSIUM ON SAFETY, SECURITY, AND RESCUE ROBOTICS (SSRR)　1　2013　

show all

  • 　Thrust Loss Saving Design of Overlapping Rotor Arrangement on Small Multirotor Unmanned Aerial Vehicles　Hikaru Otsuka,Keiji Nagatani　2016 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA)　2016-June　ICRA　3242　2016　
  • 　Basic Understanding of Airfoil Characteristics at Low Reynolds Numbers (10(4)-10(5))　Winslow Justin,Otsuka Hikaru,Govindarajan Bharath,Chopra Inderjit　JOURNAL OF AIRCRAFT　55　3　1050　2018/05
  • 　Pitching moment caused by rotor flow interference on a small quad-rotor unmanned aerial vehicle in a uniform flow　Hikaru Otsuka,Keiji Nagatani　Transactions of the Japan Society for Aeronautical and Space Sciences　61　2　87　2018
  • 　Reduction of the head-up pitching moment of small quad-rotor unmanned aerial vehicles in uniform flow　Hikaru Otsuka,Daisuke Sasaki,Keiji Nagatani　International Journal of Micro Air Vehicles　10　1　85　2018/03/01

Conference Presentations

  • Side-by-Side Rotor Thrust Change During Horizontal Approach to Rectangle Step(conference：AIAA SCITECH 2025 Forum)(2025/01/08)
  • Development of 3D Flow Analysis Method for Multicopter Rotors by Combination of Blade Element Theory and Actuator Line Model(conference：AIAA SCITECH 2025 Forum)(2025/01/08)
  • Smoke-Visualized Wake of Quadrotor in Ground Effect(conference：Twenty-fourth International Symposium on Advanced Fluid Information (AFI2024))(2024/11/12)
  • Plan to study the Surface Flow of a Small Rotor Blade with a Vortex Generator(conference：Twenty-fourth International Symposium on Advanced Fluid Information (AFI2024))(2024/11/12)
  • Simulation of Fountain Flow Development in Quadrotor Wake with Symmetry Boundary Condition(conference：Twenty-third International Symposium on Advanced Fluid Information (AFI2023))(2023/11/06)

show all

  • Preliminary Study on Quadrotor Wake in Ground Effect Using Symmetry Walls(conference： The 22nd International Symposium on Advanced Fluid Information )(2022/11/09)
  • Development of a Multi-Rotor UAV to transport a Small Rover in a Mountainous Area(conference：SME annual Conference on Robotics and Mechatronics (Robomec))(2013/05)
  • Evaluation of Rotary wing Thrust of Small UAVs in High Altitude Flight Conditions(conference：The 1st International Conference on Computational Engineering and Science for Safety and Environmental Problems)(2014/04)
  • Evaluation of Hovering Thrust Performance of Shrouded Rotors for Multi-rotor UAVs to Reduce Weight (conference：AIAA Atmospheric Flight Mechanics Conference)(2015/01/05)
  • Flow Visualization on a Shrouded Rotor in Cross Wind Using a Laser Light Sheet Technique (2015/04/16)
  • Flow visualization of separation on a shrouded rotor inlet in a crosswind (conference：APISAT 2015 - 7th Asia-Pacific International Symposium on Aerospace Technology)(2015/10)
  • Effect of Reynolds numbers of 10,000 to 100,000 on rotor blades of small unmanned aerial vehicles (conference：34th AIAA Applied Aerodynamics Conference)(2016/06)
  • Basic understanding of airfoil characteristics at low reynolds numbers (conference：7th AHS Technical Meeting on VTOL Unmanned Aircraft Systems and Autonomy)(2017/01/01)
  • Reduction of pitching moment generation of a quadrotor UAV in gust with slant rotors(conference：AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting)(2017/01/08)
  • Investigation on Relationship between Rotors Axis Length and Ground Effect on a Small Quadrotor UAV Performance (conference：JSME annual Conference on Robotics and Mechatronics (Robomec))(2017/05/10)
  • Flow visualization of wake of a quad-copter in ground effect(conference：6th Asian-Australian Rotorcraft Forum and Heli Japan 2017, Kanazawa, 2017)(2017/11/01)

Others

  • 　Winter operational test of unmanned observation devices in Mt. Zao　谷島 諒丞,山内 元貴,大丸 拓郎,大塚 光,久利 美和　東北地域災害科学研究 = Tohoku journal of natural disaster science　53　113　2017/03
  • 　Rotor-to-rotor Aerodynamic Interference of Multirotor Aerial Vehicles in Flight　Hikaru, Otsuka., Hiroshi, Tokutake.　Journal of the Japan Society of Applied Electromagnetics and Mechanics　30　3　287-292　2022/11/10

Arts and Fieldwork

Patent

Theme to the desired joint research

Grant-in-Aid for Scientific Research

○「低レイノルズ数10k-50kでホバー効率が高く低騒音なロータ翼型の開発」(2024-2026)　
○「昆虫の飛行制御行動の強制と適応過程の観察による飛行フィロソフィー顕在化と理解」(2023-2027)　
○「小型無人航空機の飛行時間の飛躍的向上を目指した小型ロータの開発と設計理論の再構築」(2016-2017)　

Competitive research funding,Contribution

Collaborative research,Consignment study

Classes (Bachelors)

○Introduction to Advanced Technologies A(2024)
○Research Project(2023)
○Research Project(2022)

Classes (Graduate Schools)

○Master Thesis Report for Frontiers(2024)
○Laboratory Rotation I(2024)
○Laboratory RotationⅠ(2024)

International Project

International Students

Lecture themes

Others (Social Activities)

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