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Aerodynamics of an archery arrow

Research Project

Project/Area Number 18K03943
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionThe University of Electro-Communications

Principal Investigator

Miyazaki Takeshi  電気通信大学, 大学院情報理工学研究科, 教授 (50142097)

Co-Investigator(Kenkyū-buntansha) 高橋 直也  東京電機大学, 工学部, 教授 (40313423)
杉浦 裕樹  国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 主任研究開発員 (90358664)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsアーチェリー矢 / 空力特性 / 風洞実験 / 飛翔実験 / 数値計算 / 乱流遷移 / 飛翔姿勢 / 背景風の影響 / MSBS風洞実験 / 再層流化 / 飛翔姿勢制御 / 加速度センサー / 高速度カメラ / 高速度ビデオカメラ / 矢の空力特性 / 境界層の乱流遷移
Outline of Final Research Achievements

The aerodynamic properties of archery arrows were studied experimentally and numerically. From the wind tunnel experiments with Magnetic Suspension and Balance System (MSBS), the drag (CD), pitching moment (CM) and lift (CL) coefficients were obtained. In the free-flight experiments, the instantaneous drag exerted on the arrow was measured using an acceleration sensor, from which the instantaneous state of the arrow’s boundary layer was inferred. Both turbulent-laminar and laminar-turbulent transitions were found if the bulge points were attached to the arrows. In contrast, the boundary layer remained laminar for the streamlined points. The trajectory and attitude of the archery arrows were computed numerically under the influence of background wind conditions. Arrows with larger mass and larger velocity showed less deviated trajectories. The boundary layer was found to remain laminar by keeping an angle of attack close to zero, which would reduce the wind drift by about 45%.

Academic Significance and Societal Importance of the Research Achievements

本研究では、アーチェリー矢の空力特性を風洞実験、飛翔実験によって調べ、アーチェリー競技が矢のシャフト側面の境界層流れの乱流遷移領域で行われていることを指摘し、鏃・シャフト・矢羽の選択や初期角速度の設定によって、矢側面の境界層流れの乱流遷移過程を制御することが競技力の向上につながることを示唆している。また、2種類の実験によって得られた矢の空力特性を用いて、矢の飛翔軌道・飛翔姿勢を数値計算して、野外競技における背景風の影響を調べている。これらの結果は、アーチェリー矢の飛翔に伴う流体現象についての独創的な研究成果であり、流体力学ばかりでなくスポーツ工学分野における貢献が顕著である。

Report

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

    (14 results)

All 2020 2019 2018

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (8 results)

  • [Journal Article] Influence of Curvature on Drag Reduction by Opposition Control in Turbulent Flow Along a Thin Cylinder2020

    • Author(s)
      S. Hara, H. Mamori, T. Miyazaki
    • Journal Title

      International Journal of Heat and Fluid Flow

      Volume: 85-108622 Pages: 1-15

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimental and computational study of archery arrows fletched with straight vanes2020

    • Author(s)
      J. Ortiz, A. Serino, T. Hasegawa, T. Onoguchi, T. Maemukai, T. Miyazaki, H. Sugiura
    • Journal Title

      13th Conference of the International Sports Engineering Association

      Volume: on line Pages: 1-6

    • DOI

      10.3390/proceedings2020049056

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 卓球とアーチェリーにおける流体力学2020

    • Author(s)
      宮嵜武
    • Journal Title

      ながれ(日本流体力学会誌)

      Volume: 39 Pages: 138-144

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Simulation of Wind Drift of Arrows on the Olympic Venue for Tokyo 20202020

    • Author(s)
      J. Ortiz, M. Ando, T. Miyazaki
    • Journal Title

      Athens Journal of Sports

      Volume: 7 Issue: 1 Pages: 1-20

    • DOI

      10.30958/ajspo.7-1-1

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 身近なながれの制御2019

    • Author(s)
      宮嵜武、守裕也
    • Journal Title

      ながれ(日本流体力学会誌)

      Volume: 38 Pages: 443-448

    • Related Report
      2019 Research-status Report
  • [Journal Article] Computation of the trajectory and attitude of arrows subject to background wind2019

    • Author(s)
      Ortiz Julio, Anodo Masato, Murayama Kentaro, Miyazaki Takeshi, Sugiura Hiroki
    • Journal Title

      Sports Engineering

      Volume: 22 Pages: 1-9

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] アーチェリー矢の境界層流れにおける層流-乱流、乱流-層流遷移:加速度センサを用いた飛翔実験2020

    • Author(s)
      前迎博紀、Ortiz Julio、芹野厚志、宮嵜武
    • Organizer
      日本流体力学会年会2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] 矢の側面境界層の2次不安定性2020

    • Author(s)
      伊藤一希、小野口貴仁、守裕也、宮嵜武
    • Organizer
      日本流体力学会年会2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] 加速度センサを用いたアーチェリー矢の飛翔実験2019

    • Author(s)
      芹野厚志、Ortiz Julio、宮嵜武、杉浦裕樹
    • Organizer
      日本流体力学会年会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 先端形状が矢側面の境界層に与える影響2019

    • Author(s)
      池田智彦、芹野厚志、中野裕太、宮嵜武、高橋直也、岩津玲麿
    • Organizer
      日本流体力学会年会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 鏃を装着したアーチェリー用ベアシャフトをすぎる流れの数値計算2019

    • Author(s)
      岩津玲麿、中野裕太、、高橋直也、、宮嵜武
    • Organizer
      日本流体力学会年会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] アーチェリー矢の飛翔軌道と飛翔姿勢に対する背景風の影響:A/C/E矢とX10矢の比較2018

    • Author(s)
      安藤雅人、Ortiz Julio、宮嵜武、杉浦裕樹
    • Organizer
      日本流体力学会年会2018
    • Related Report
      2018 Research-status Report
  • [Presentation] アーチェリー矢の飛翔軌道と飛翔姿勢~背景風による影響の推定~2018

    • Author(s)
      Ortiz Julio、安藤雅人、宮嵜武
    • Organizer
      日本機械学会2018年度年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 矢の側面境界層の線形不安定性解析2018

    • Author(s)
      長谷川俊成、芹野厚志、宮嵜武、高橋直也、岩津玲麿
    • Organizer
      日本機械学会2018年度年次大会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2023-03-16  

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