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Water surface swimming dynamics in lightweight centipedes

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arxiv 2210.09570 v2 pith:BYMMHX73 submitted 2022-10-18 physics.flu-dyn physics.bio-ph

Water surface swimming dynamics in lightweight centipedes

classification physics.flu-dyn physics.bio-ph
keywords bodydragdynamicslocomotionswimmingwavewavesair-water
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Study of the locomotion of a centipede (L. forficatus) at the air-water interface reveals that it does not predominantly use its 14 leg pairs to locomote; unlike most swimmers which propagate head-to-tail body bending waves, this species propels via tail-to-head waves. Its low mass and body-fluid contact yield locomotion dynamics in which fluid wave drag forces dominate inertia. Microorganism-inspired wave drag resistive force theory captures swimming performance of the macroscale animal, motivating a control hypothesis for the animals self-propulsion body and limb kinematics.

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