阻力
推力
唤醒
海洋工程
Lift(数据挖掘)
加速度
生物
升阻比
航空航天工程
地质学
物理
工程类
机械
计算机科学
经典力学
数据挖掘
作者
Yukun Sun,Jena Shields,Chris Roh
标识
DOI:10.1016/j.cub.2023.11.008
摘要
Summary
Whirligig beetles (Gyrinidae) are the fastest-swimming insects. The one-centimeter long aquatic beetle can reach a peak acceleration of 100 m s–2 and a top velocity of 100 body lengths per second. Previous studies have suggested that drag-based thrust by their hind legs is responsible for their propulsion1,2,3,4. For the drag-based thrust to be effective, however, the leg stroke velocity must exceed the swimming velocity. Therefore, for fast-swimming whirligigs, it is unlikely that the drag-based thrust is the main source of acceleration5. Here, we demonstrate that lift-based thrust enables the rapid swimming of the whirligigs.
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