Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

What makes flying snakes such gifted gliders?

04.03.2014

A team of researchers exploring the aerodynamics of flying snakes finds that whirls of wind, the little vortices surrounding it, give them an extra lift

Animal flight behavior is an exciting frontier for engineers to both apply knowledge of aerodynamics and to learn from nature's solutions to operating in the air. Flying snakes are particularly intriguing to researchers because they lack wings or any other features that remotely resemble flight apparatus.


The flattened shape of a flying snake in flight allows it to get lift from little whirls of wind (vortices) around it.

Credit: Copyright: Jake Socha

Before you envision flying snakes raining down from the sky, the ones involved in this study are small -- about 1 meter in length and the width of your thumb -- and live in the lowland tropical forests of Asia and Southeast Asia.

Virginia Tech Assistant Professor Jake Socha, renowned for his work with flying snakes, recently teamed with Boston University and George Washington University researchers to explore snakes' lift and wakes using computer simulations. They describe their work in the journal Physics of Fluids.

... more about:
»Physics »aerodynamics »flying snake

Previously, experiments in a wind tunnel had returned an unexpected finding: the snake's shape is not only good at generating a force of lift, but it also gets an extra boost of lift when facing the air flow at a certain angle.

"After experiments uncovered this, we decided to use computer simulations to try to explain it," says Lorena Barba, associate professor of mechanical and aerospace engineering at the George Washington University.

So much of the aerodynamics of animal flight -- especially that of flying snakes -- remain a mystery. Scale is important, but also the manner in which flight is achieved.

"Rather than fixed wings, animal fliers have flapping wings," explains Barba. "In the case of gliders, their small scale means they're always in a flurry of whirling winds. By understanding how they can be graceful and efficient under these conditions, we can in turn use that knowledge to create small flying machines that are equally graceful."

Whirls of wind can be particularly useful: these little vortices "can give flying snakes an extra lift," notes Barba. "The shape of the snakes in flight -- which is a flattened version of its shape at rest -- gets help from little vortices around it."

Next, the researchers would like to include more elements of the snake's real gliding conditions into their computer simulations, such as its full body forming an S-shape, rather than working with just a section.

"This will be more difficult to do in a computer model, but it will probably reveal more about the complicated flow patterns snakes take advantage of to be such gifted gliders," Barba says.

###

The article, "Lift and wakes of flying snakes" (DOI: 10.1063/1. 4866444) is authored by Anush Krishnan, John J. Socha, Pavlos P. Vlachos, L. A. Barba. It will be published in the journal Physics of Fluids on on March 4, 2014. After that date, it may be accessed at: http://scitation.aip.org/content/aip/journal/pof2/26/3/10.1063/1.4866444?

ABOUT THE JOURNAL

Physics of Fluids is devoted to the publication of original theoretical, computational, and experimental contributions to the dynamics of gases, liquids, and complex or multiphase fluids. See: http://pof.aip.org

Jason Socrates Bardi | EurekAlert!

Further reports about: Physics aerodynamics flying snake

More articles from Life Sciences:

nachricht Link Discovered between Immune System, Brain Structure and Memory
26.04.2017 | Universität Basel

nachricht Researchers develop eco-friendly, 4-in-1 catalyst
25.04.2017 | Brown University

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

Scientist invents way to trigger artificial photosynthesis to clean air

26.04.2017 | Materials Sciences

Ammonium nitrogen input increases the synthesis of anticarcinogenic compounds in broccoli

26.04.2017 | Agricultural and Forestry Science

SwRI-led team discovers lull in Mars' giant impact history

26.04.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>