arXiv:2605.05875cs.ROphysics.flu-dyn2026-05

受章鱼喷水推进启发,设计可变形机器喷射机器人,实现高速推进与低阻滑行。

Cycle-resolved Cephalopod-Inspired Pulsed-Jet Robot With High-Volume Expulsion and Drag-Reduced Gliding

论文配图:Cycle-resolved Cephalopod-Inspired Pulsed-Jet Robot With High-Volume Expulsion and Drag-Reduced Gliding
图 1 · 摘自论文原文
  • 采用刚柔混合折纸结构,实现大体积主动喷射与形态可控变形。
  • 最高瞬时速度达0.5米/秒(3.8体长/秒),平均速度超0.2米/秒。
  • 适合研究喷射-滑行-回吸动力学,为仿生推进提供实验平台。

章鱼的喷水推进并非单一喷射事件,而是一个包含喷射、被动滑行和外套膜充填的协调周期。受此周期化生物策略启发,本文提出一种章鱼仿生喷射机器人,其采用刚柔混合折纸外套膜,可实现大体积主动驱动及几何引导的体形变化。该外套膜结合刚性折叠面板与柔性硅胶框架,在喷射过程中实现75%的有效腔体容积缩减,并在收缩滑行构型下使投影横截面阻力面积降低约75.7%。基于该平台,我们建立周期化分析框架,分别研究喷射体积、滑行时长及充填路径对整周期推进性能的影响。实验表明,机器人瞬时峰值速度可达约0.5米/秒(3.8体长/秒),首喷射周期内平均速度超过0.2米/秒(1.5体长/秒)。结果进一步验证了高喷射体积比收缩对速度生成的作用、不同滑行时长下的低阻力滑行优势,以及基于外套膜开口的被动进气阀对充填过程的辅助效果。本工作不仅实现了可主动变形的章鱼式喷射推进机器人,还构建了一个统一的实验平台,用于研究喷射-滑行-回吸动力学。

原文摘要 · Abstract (English)

Cephalopod pulsed-jet locomotion is not a single isolated expulsion event, but a coordinated cycle involving jet expulsion, passive gliding, and mantle refilling. Inspired by this cycle-resolved biological strategy, this paper presents a cephalopod-inspired pulsed-jet robot with a rigid-soft hybrid origami mantle that enables large, actively driven, and geometry-guided body deformation. The proposed mantle integrates rigid folding panels with a compliant silicone framework, allowing a 75% effective cavity-volume reduction during expulsion and reducing the projected cross-sectional drag area by approximately 75.7% in the contracted gliding configuration. Using this platform, we formulate a cycle-resolved framework to separately investigate how expelled volume, glide duration, and refill pathway influence whole-cycle locomotion performance. Experiments show that the robot reaches a peak speed of approximately 0.5 m/s (3.8 BL/s) and an average speed exceeding 0.2 m/s (1.5 BL/s) within the first jetting cycle. The results further demonstrate the roles of high expelled-volume-ratio contraction in speed generation, reduced-drag-area gliding under different glide durations, and mantle-aperture-inspired passive inlet valves in assisting refill. This work provides both a robotic implementation of actively deformable cephalopod-like jet propulsion and a unified experimental platform for studying expulsion-gliding-refilling dynamics in pulsed-jet locomotion.

仿生机器人喷射推进折纸结构低阻滑行

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