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British scientists have solved the mystery of a dandelion seed that can fly 500 miles (800 kilometers) away by wind alone, drawing on its flight patterns for the manufacture of stealth drones, the Daily Mail of London reported on October 17.
dandelion seeds, a structure similar to a mini parachute, is extremely efficient and could revolutionise the design of remote-controlled stealth drones.
it is understood that the small dandelion seeds can float to 800 kilometers away by the wind alone.
Now, scientists have discovered the secret to dandelion seed flight, surrounded by air bubbles that are invisible to the naked eye, a structure that is one of nature's best pilots.
dandelion seeds are said to be four times more efficient than current lying in the design of artificial parachutes. Researchers at the University of Edinburgh
conducted an experiment to better understand why dandelion seeds perform so well.
researchers combined ultra-long exposure with high-speed imaging techniques and found that when air passes through the hard hair on the dandelion seeds, there are circular bubbles forming, increasing drag and slowing down each seed to the ground, allowing the feather design to spread the weight of lightweight seeds more efficiently than the wing edile. "This passive flight mechanism is so effective that it allows seeds to spread over long distances, and we looked at the flow around the dandelion seeds and found an unusual vortex," the
researchers wrote in the paper.
" What scientists call a separation vortex is the bubble mentioned above, which is physically separated from the hair and stabilized through the air flowing through it.
researchers believe dandelion's porous parachutes could spur the development of small drones that consume little power and can be used for remote sensing or air pollution monitoring.
nature's ingenious flight mode minimizes material and energy costs, and can also be applied to sustainable technical engineering.
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