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When the tail-rudder rotating body with drag ring moves in air, the existence of drag ring makes the flow field structure and aerodynamic characteristics around it obviously different from those without drag ring. In this paper, numerical simulation is used as the main means, the national numerical wind tunnel project NNW-FlowStar numerical simulation software is used to study the aerodynamic interference law of drag ring mechanism opening on the configuration of tail rudder rotating body, and the influence law of drag ring scale on the aerodynamic characteristics of tail rudder rotating body configuration is analyzed. The results show that the axial force increases obviously, the normal force is basically unchanged, the center of pressure moves backward, the pitch moment is obvious and the pitch rudder effect decreases with the increase of the drag ring size, which can provide reference for related lay-out design.

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Study on Aerodynamic Interference of Drag Ring Design Parameters on Tail Rudder Rotating Body Configuration

  • 会议论文

  • 发表日期：

    2026年

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  • Hongyang Chen,
  • Hongyin Jia,
  • Yingying Shen,
  • Pengcheng Cui,
  • Tao Mo,
  • Guiyu Zhou

摘要

When the tail-rudder rotating body with drag ring moves in air, the existence of drag ring makes the flow field structure and aerodynamic characteristics around it obviously different from those without drag ring. In this paper, numerical simulation is used as the main means, the national numerical wind tunnel project NNW-FlowStar numerical simulation software is used to study the aerodynamic interference law of drag ring mechanism opening on the configuration of tail rudder rotating body, and the influence law of drag ring scale on the aerodynamic characteristics of tail rudder rotating body configuration is analyzed. The results show that the axial force increases obviously, the normal force is basically unchanged, the center of pressure moves backward, the pitch moment is obvious and the pitch rudder effect decreases with the increase of the drag ring size, which can provide reference for related lay-out design.