Honey bees and hummingbirds can hover like helicopters for minutes at a time, sucking the juice from their favorite blossoms while staying aloft in a swirl of vortices. But the unsteady air flows they ...
Smoke particles illuminated with laser light around a freely flying maple seed reveal a prominent leading edge vortex. The visualization of the leading edge vortex on this and 31 other specimens of ...
Recent experiments with tethered hawkmoths, and with large-scale mechanical flapping models, have successfully replicated some of the force-generating abilities of insects 3,4,5,6,7. Leading-edge ...
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