Birds, bats and insects hold secrets for aerospace...(es have several grants from the Air Forc...)

Date:2/4/2008

es have several grants from the Air Force totaling more than $1 million a year to research small flapping wing aircraft. Such aircraft would fly slower than their fixed wing counterparts, and more importantly, they would be able to hover and possibly perch in order to monitor the environment or a hostile area. Shyy's current focus is on the aerodynamics of flexible wings related to micro air vehicles with wingspans between 1 and 3 inches.

"These days, if you want to design a flapping wing vehicle, you could build one with trial and error, but in a controlled environment with no wind gusts," Shyy said. "We are trying to figure out how to design a vehicle that can perform a mission in an uncertain environment. When the wind blows, how do they stay on course""

A dragonfly, Shyy says, has remarkable resilience to wind, considering how light it is. The professor chalks that up to its wing structure and flight control. But the details are still questions.

"We're really just at the beginning of this," Shyy said.

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Contact: Nicole Casal Moore ncmoore@umich.edu 734-647-1838 University of Michigan Source:Eurekalert

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