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Scientist uses dragonflies to better understand flight

zing drag. You never think about using drag."

The next question, she said, is whether engineers can use these ideas to build a flapping machine as efficient as a fixed-wing aircraft.

Questions of size and feasibility remain. "To hover well or to fly for a long time is hard, especially at slow speeds," she said. "Power is limited. So finding these efficient motions is very important."

Still, Wang's work moves researchers a step closer to building such a machine.

"I want to build insects on a computer as a way of learning why almost all things that move in fluid use a flapping motion," said Wang. "Whether it's a fish which flips its fins or a bird, they're actually using the same principle.

"The way paper or leaves fall, and how insects fly, may give us some ideas about why animals use these methods at all," she said.


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Source:Cornell University News Service


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