Verification of Optimum Spanwise Lift Distribution Design Method Applying VLM

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  • ODA Yuki
    東京大学大学院工学系研究科航空宇宙工学専攻
  • YUHARA Tatsunori
    宇宙航空研究開発機構航空技術部門
  • RINOIE Kenichi
    連絡先著者（Corresponding author）：trinoie@mail.ecc.u-tokyo. ac.jp 東京大学大学院工学系研究科航空宇宙工学専攻 宇宙航空研究開発機構航空技術部門

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  • 渦格子法を用いたスパン方向揚力分布の最適設計手法の検証
  • ウズ ゴウシホウ オ モチイタ スパン ホウコウ ヨウリョク ブンプ ノ サイテキ セッケイ シュホウ ノ ケンショウ

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Inverse Vortex Lattice Method (IVLM) was applied to calculate the optimum spanwise lift distributions of nonplanar wings. IVLM is a tool to calculate the circulation distribution which achieves the minimum induced drag for each wing configuration mathematically. It is based on Kroo's method which is using Lifting Line Theory. IVLM takes effects of sweep back angle and airfoil camber into consideration by applying VLM. In this study, IVLM validity is confirmed through evaluating span loadings of rectangular wings and swept back wings with and without winglets. The characteristic of IVLM is also examined and it is indicated that equal intervals are required for spanwise panel divisions to calculate proper twist and lift distributions.

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