Navigation Links
How hummingbirds fight the wind
Date:11/21/2010

WASHINGTON, D.C., November 21, 2010 -- Hummingbirds rank among the world's largest and most accomplished hovering animals, but how do they manage it in gusty winds?

A team of researchers at New Mexico State University, Los Alamos National Laboratory, Technische Universiteit Eindhoven, and Continuum Dynamics Inc. has built a robotic hummingbird wing to discover the answer, which they describe today at the American Physical Society Division of Fluid Dynamics (DFD) meeting in Long Beach, CA

Hummingbirds do not fly like other birds, whose wings flap up and down, explained B.J. Balakumar of the Extreme Fluids Lab at Los Alamos National Laboratory. Instead, their wings oscillate in a figure eight pattern to produce lift on both the downstroke and upstroke. They achieve the extra lift they need to hover by creating a vortex on the leading edges of their wings.

Such vortices are inherently unstable. "The birds, though, are very clever," Balakumar said. "Their wings create the vortex with a high angle of attack on the downstroke. Then they flip their wings around on the upstroke, so as they shed one vortex, they create another on the other side of the wing, thereby managing to maintain high lift forces."

A gust of wind could pull those vortices off the wing. Instead, hummingbirds continually readjust their wing angles to maintain high lift forces.

The researchers' robotic wing will attempt to replicate that feat in gusty conditions. They hope to identify robust algorithms that will allow the creation of stable ornithopters that can operate reliably under real-life conditions for surveillance and other applications.


'/>"/>

Contact: Jason Socrates Bardi
jbardi@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert  

Page: 1

Related biology news :

1. Vitiligo skin disorder could yield clues in fight against melanoma
2. Plant-eating predator to fight superweed is not magic bullet
3. UCSB study finds physical strength, fighting ability revealed in human faces
4. Scripps Florida scientists awarded $1.5M to fight major water and food parasites
5. A new weapon in the fight against obesity and diabetes
6. Researchers use chemical from medicinal plants to fight HIV
7. UNC study: Text messaging may help children fight off obesity
8. Children distressed by family fighting have higher stress hormones
9. £20 million to fight virtual crime and treat our ageing population
10. £20 million to fight virtual crime and treat our aging population
11. Feed a cold, feed a fever: Research shows calorie cut makes it harder to fight flu
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
How hummingbirds fight the wind
(Date:3/14/2016)... March 14, 2016 NXTD ) ("NXT-ID" ... commerce market, announces the airing of a new series of ... week of March 21 st .  The commercials will air ... popular Squawk on the Street show. --> NXTD ... growing mobile commerce market, announces the airing of a new ...
(Date:3/10/2016)... BLUE BELL, Pa. , March 10, 2016   ... U.S. Customs and Border Protection (CBP) is testing ... in San Diego to help identify ... United States . The test, designed to help determine ... outdoor, pedestrian environment, began in February and will run until ...
(Date:3/3/2016)... 3, 2016  FlexTech, a SEMI Strategic Association Partner, ... Research & Development, Leadership in Education, and, in a ... 9 th year of the FLEXI Awards and ... individuals from past years . Judging was done ... set of criteria, by a panel of non-affiliated, independent, ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... , April 29, 2016 Elekta ... latest update to its industry-leading treatment planning software, is ... Monaco version 5.11 provides significant ... attain calculation speeds up to four times faster than ... With the industry,s gold standard Monte Carlo ...
(Date:4/28/2016)... (PRWEB) , ... April 28, 2016 , ... ... and ongoing support for Connecticut's innovative, growing companies, today announced the launch of ... and financial technology (fintech) companies. , “VentureClash looks to attract the ...
(Date:4/28/2016)... ... 28, 2016 , ... Morris Midwest ( http://www.morrismidwest.com ), a ... at its Maple Grove, Minnesota technical center, May 11-12. The event will ... Almost 20 leading suppliers of tooling, accessories, software and other related technology will ...
(Date:4/27/2016)... ... 27, 2016 , ... The Pittcon Organizing Committee is pleased to announce that ... volunteer member of Committee since 1987. Since then, he has served in a number ... was chairman for both the program and exposition committees. In his professional career, Dr. ...
Breaking Biology Technology: