Using Drag to Hover
英文摘要：
Unlike a helicopter, an insect can, in theory, use both lift and drag to stay aloft. Here we show that a dragonfly uses mostly drag to hover by employing asymmetric up and down strokes. Computations of a family of strokes further show that using drag can be as efficient as using lift at the low Reynolds number regime appropriate for insects.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
