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When a large deep-sea lander maintains a horizontal attitude and is free to dive without power, it will experience a rolling phenomenon, which will affect the subsequent deep-sea landing of the lander. The attitude angle of the lander is reduced by installing an anti-roll plate. The quadratic constitutive relation (QCR) based SST k-omega method was used to calculate the dive attitude of the lander with different shapes, sizes and positions of anti-roll plates. The results showed that increasing the aspect ratio can increase the shedding distance of vortices, reduce the interaction range in the process of vortex merging, weaken the momentum transfer and energy exchange between vortices, and thus reduce the swing amplitude. Finally, the feasibility of the anti-roll plate is proven by experiments.

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Unpowered Diving Attitude Analysis and Anti-roll Design of a Deep-Sea Lander

  • 会议论文

  • 发表日期：

    2025年

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  • Lin Xing,
  • Haitao Gu,
  • Hao Gao,
  • Mengmeng Feng,
  • Taijie Wang,
  • Junkai Cao

摘要

When a large deep-sea lander maintains a horizontal attitude and is free to dive without power, it will experience a rolling phenomenon, which will affect the subsequent deep-sea landing of the lander. The attitude angle of the lander is reduced by installing an anti-roll plate. The quadratic constitutive relation (QCR) based SST k-omega method was used to calculate the dive attitude of the lander with different shapes, sizes and positions of anti-roll plates. The results showed that increasing the aspect ratio can increase the shedding distance of vortices, reduce the interaction range in the process of vortex merging, weaken the momentum transfer and energy exchange between vortices, and thus reduce the swing amplitude. Finally, the feasibility of the anti-roll plate is proven by experiments.