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This study analyzes the drag of civil aircraft fuselage air inlets and outlets with consideration of the influence from engine jet flow, using computational fluid dynamics (CFD) simulations. It examines the incremental drag on typical aircraft air inlets and outlets using two engine simulation approaches: powered nacelles and through-flow nacelles. The results indicate that the assessment of ventilation drag using the through-flow nacelle simulation is quite close to that of the power nacelle simulation, with a difference of only about 0.05%, demonstrating that it is feasible to assess fuselage inlets and outlets drag using through-flow nacelles.

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Analysis of Civil Aircraft Fuselage Ventilation Drag Influenced by Engine Jet Flow

  • 会议论文

  • 发表日期：

    2025年

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  • Lei Wang,
  • ShiRui Zhou,
  • KaiLi Liu,
  • XiaoLi Jiang,
  • FangHan Lu,
  • JinJie Tang

摘要

This study analyzes the drag of civil aircraft fuselage air inlets and outlets with consideration of the influence from engine jet flow, using computational fluid dynamics (CFD) simulations. It examines the incremental drag on typical aircraft air inlets and outlets using two engine simulation approaches: powered nacelles and through-flow nacelles. The results indicate that the assessment of ventilation drag using the through-flow nacelle simulation is quite close to that of the power nacelle simulation, with a difference of only about 0.05%, demonstrating that it is feasible to assess fuselage inlets and outlets drag using through-flow nacelles.