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The impact of axial spin on the subsonic aerodynamic characteristics of a projectile at high angles of attack was examined through wind tunnel experiments utilizing Particle Image Velocimetry (PIV) and force balance measurements. A method is presented to estimate flow separation positions based on PIV-measured velocity fields, facilitating the interpretation of the measured forces. Furthermore, an analysis of the particle images offered insights into the state of the boundary layer, elucidating the mechanisms governing the flow separation.

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Transition and Separation on a Spinning Projectile Subjected to Subsonic Flow at High Angles of Attack

  • 会议论文

  • 发表日期：

    2026年

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  • Bernd Dutschke,
  • Christian Rey,
  • Christian Mundt

摘要

The impact of axial spin on the subsonic aerodynamic characteristics of a projectile at high angles of attack was examined through wind tunnel experiments utilizing Particle Image Velocimetry (PIV) and force balance measurements. A method is presented to estimate flow separation positions based on PIV-measured velocity fields, facilitating the interpretation of the measured forces. Furthermore, an analysis of the particle images offered insights into the state of the boundary layer, elucidating the mechanisms governing the flow separation.