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Load distribution identification for aircraft main wing based on optical fiber sensing technique and neural network approach

Research Project

Project/Area Number 17K14878
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Aerospace engineering
Research InstitutionJapan Aerospace EXploration Agency

Principal Investigator

Wada Daichi  国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 研究開発員 (10770480)

Research Collaborator Sugimoto Yohei  
Fernandez Patricia  
Kasai Tokio  
Murayama Hideaki  
Igawa Hirotaka  
Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords揚力同定 / 逆解析 / 機械学習 / 光ファイバセンシング / 航空宇宙工学 / 構造・機能材料
Outline of Final Research Achievements

This study developed a technique to identify lift load distributions on main wings of aircraft. An optical fiber distributed sensing technique measures strain distributions. The lift loads are calculated by using the strain distributions through neural networks.
We have validated our technique through numerical simulations. We compared the technique with a conventional inverse analysis technique. We have also conducted wind tunnel tests for experimental demonstrations. We built a wing model with multiple flaps and optical fiber sensors. We conducted lift load identification in real-time, and showed the performance in the sense of accuracy. In addition, we successfully identified the angle of attack.

Academic Significance and Societal Importance of the Research Achievements

本研究ではニューラルネットワークを用いることで、ひずみ計測誤差による荷重同定の不安定性が解消されることを示せた。これは従来の逆解析法の宿命的な欠点を克服することを示している。航空機への適用性・実用性が極めて高く、工学的にも非常に有益な知見となったと考える。
本技術の特色は、任意の分布形状を持った荷重を同定できる点である。従来旅客機への技術レトロフィットに加え、同定された揚力に基づいて操舵する揚力制御型無人機などの新型航空機開発も後押しする。ヘリブレード、風力発電ブレードにかかる空力荷重同定や、船体への波浪荷重同定など、他分野にとっても汎用的かつ先進的な意義を持つ。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (11 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (10 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Journal Article] Investigation of Inverse Analysis and Neural Network Approaches for Identifying Distributed Load using Distributed Strains2019

    • Author(s)
      WADA Daichi、SUGIMOTO Yohei、MURAYAMA Hideaki、IGAWA Hirotaka、NAKAMURA Toshiya
    • Journal Title

      TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

      Volume: 62 Issue: 3 Pages: 151-161

    • DOI

      10.2322/tjsass.62.151

    • NAID

      130007642387

    • ISSN
      0549-3811, 2189-4205
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Wind tunnel tests of load control technology applied to a high aspect ratio wing2018

    • Author(s)
      TAMAYAMA Masato, MAKI Midori, WADA Daichi
    • Organizer
      The 18 th International Symposium on Aerospace Technology & Manufacturing Process
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Distributed optical fiber sensing technique and its monitoring data processing for aircraft structure2018

    • Author(s)
      WADA Daichi
    • Organizer
      The Sensors & Actuators Congress
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光ファイバセンサによるひずみ分布計測と機械学習を用いた揚力分布同定技術の風洞試験実証2018

    • Author(s)
      和田大地、玉山雅人
    • Organizer
      第60回構造強度に関する講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Lift distribution control for realization of high aspect ratio wings2018

    • Author(s)
      TAMAYAMA Masato, MAKI Midori, WADA Daichi
    • Organizer
      International Conference in Nonlinear Problems in Aviation and Aerospace World Congress 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Strain distribution monitoring for a high-aspect-ratio wing in a wind-tunnel test by using optical frequency domain reflectometry and a long-length FBG2018

    • Author(s)
      和田大地、玉山雅人、牧緑
    • Organizer
      The 7th Asis-Pacific Optical Sensors Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 光ファイバセンサによるひずみ分布計測と機械学習を用いた揚力分布同定技術の風洞試験実証2018

    • Author(s)
      和田大地、玉山雅人、牧緑
    • Organizer
      第60回構造強度に関する講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 分布型光ファイバセンシングシステムを活用した航空機の構造モニタリング技術について2018

    • Author(s)
      和田大地
    • Organizer
      2018年電子情報通信学会総合大会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 光ファイバセンサによる高密度ひずみ計測と機械学習を用いた揚力分布同定技術の検討2017

    • Author(s)
      和田大地、杉本洋平
    • Organizer
      第59回構造強度に関する講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 荷重制御翼模型風洞試験の紹介2017

    • Author(s)
      玉山雅人、牧緑、和田大地、葛西時雄、有薗仁、武田真一、原栄一
    • Organizer
      第55回飛行機シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 複数舵面を有する高アスペクト比航空機翼の風洞試験2017

    • Author(s)
      玉山雅人、牧緑、和田大地
    • Organizer
      第26回 交通・物流部門大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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