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Research on the enhancement of the safety and assessment of the influences on the surroundings for the manned and unmanned multiple-rotor-type aircraft

Research Project

Project/Area Number 19H02344
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 InstitutionNagoya University

Principal Investigator

Sunada Shigeru  名古屋大学, 工学研究科, 教授 (70343415)

Co-Investigator(Kenkyū-buntansha) 得竹 浩  金沢大学, フロンティア工学系, 教授 (80295716)
田辺 安忠  国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 主幹研究開発員 (80724799)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2020: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Keywordsドローン / 空飛ぶクルマ / 騒音 / 風 / 安全 / オートロ―テーション / マルチロータ機 / 風圧 / オートローテーション
Outline of Research at the Start

ドローン,ドローンタイプ空飛ぶクルマを我々の生活空間に取り込むために,安全性向上と周辺への影響評価を取り入れた設計指針を確立する.そのために以下の2つ課題に取り組む.
(課題1:安全性向上)飛行試験とシミュレーションを組み合わせて,上記飛行体においてオートローテーションが安全性向上の有効な手法になりうるかを明らかにする.
(課題2:周辺環境への影響評価)ドローン周辺での風速,騒音の測定,及び数値計算を用いて,ドローン周辺の風速,騒音の評価式を提案する.その結果を利用し,風速・騒音を考慮した際の,上記飛行体の設計指針を整理する.

Outline of Final Research Achievements

(1)It was revealed that the peak value of downwash and its position were affected by the damage level of rotor. The method estimating downwash has been newly proposed.(2)Vertical autorotation was proposed as an emergency landing technique for a multirotor drone suffering a total loss of one motor. The vertical autorotation consists of two phases. In phase 1, all rotors operate in windmill mode. In phase 2, two rotors, including a damaged one, operate in windmill mode while the other two operate in propeller mode.(3)It was revealed that the ground effect of the quadrotor drone shows different trend compared to the conventional single-rotor helicopter. The outwash from each rotor mainly flows along the ground and decays proportional to the individual rotor size, while the outwash from the gap of the rotor is strong up to a higher altitude. This outwash feature should be paid attention to keep the personals or objectives on the ground safe.

Academic Significance and Societal Importance of the Research Achievements

(1)吹き下ろしの提案推定手法を利用することで,損傷の直接推定や損傷や飛行環境の変化によるダイナミクス変化を補償する新しい飛行制御則の実現が期待できる.(2)クアドロータドローンにおいて1モータの故障が飛行に与える影響は大きい.クアドロータドローンにおける1モータ故障時の安全着陸の手法を提案した.(3)マルチロータ型eVTOLやドローンが,離着陸する際に地面の影響を受け飛行が不安定になりやすいこと,ロータの間の断面においては高高度まで強い風が横に噴き出しており地上人員・物資への影響に注意が必要であることを示した.以上の成果は,マルチロータ型eVTOLやドローンの安全な利用に貢献できる.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (7 results)

All 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Quadrotor Drone Hovering in Ground Effect2021

    • Author(s)
      Yasutada Tanabe, Hideaki Sugawara, Shigeru Sunada, Koichi Yonezawa, and Hiroshi Tokutake
    • Journal Title

      Journal of Robotics and Mechatronics

      Volume: 33 Issue: 2 Pages: 339-347

    • DOI

      10.20965/jrm.2021.p0339

    • NAID

      130008027707

    • ISSN
      0915-3942, 1883-8049
    • Year and Date
      2021-04-20
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Numerical Investigations of Ground Effect of a Quadcopter2021

    • Author(s)
      Koichi Yonezawa1, Kazuki Akiba, Hao Liu, Hideaki Sugawara, Yasutada Tanabe, Hiroshi Tokutake, and Shigeru Sunada
    • Organizer
      APISAT
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NUMERICAL INVESTIGATION OF QUAD ROTORS IN GROUND EFFECT2021

    • Author(s)
      Yasutada Tanabe, Hideaki Sugawara, Shigeru Sunada, Koichi Yonezawa, Hiroshi Tokutake
    • Organizer
      European Rotorcraft Forum 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マルチロータの地面効果に関する数値シミュレーション2020

    • Author(s)
      田辺安忠、菅原暎明、砂田茂、得竹浩、米澤宏一
    • Organizer
      第58回飛行機シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 空飛ぶクルマの空力騒音解析2020

    • Author(s)
      廣瀬将輝,前田翔太郎,砂田茂,山口皓平,田辺安忠,得竹浩,米澤宏一
    • Organizer
      第58回飛行機シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 空飛ぶクルマの実用化に向けた音圧環境解析に関する研究2019

    • Author(s)
      岡本涼太、廣瀬将輝、砂田茂、山口皓平、田辺安忠
    • Organizer
      日本航空宇宙学会第57回飛行機シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Surrounding Environment Estimation of Drone for Wall Collision avoidance2019

    • Author(s)
      Kazuhiro Fukuda, Soshi Okada, Hiroshi Tokutake, Shigeru Sunada, Yasutada Tanabe and Koichi Yonezawa
    • Organizer
      2019 Asia-Pacific International Symposium on Aerospace Technology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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