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Wind Tunnel Testing Sheds Light on Flying Dinosaurs

The Microraptor lived about 130 million years ago and is believed to be a precursor to today's birds. (Via <a href="http://www.flickr.com/photos/cinaflox/">Flickr Creative Commons</a>)
The Microraptor lived about 130 million years ago and is believed to be a precursor to today's birds. (Via Flickr Creative Commons)

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VOA News
Wind tunnel testing of a feathered dinosaur model adds evidence to the theory that modern day birds evolved from ancient reptiles.

Scientists at the University of Southampton in England built a full-scale, anatomically correct model of a Microraptor, a five-winged creature that lived in the early Cretaceous period about 130 million years ago. The dinosaur is believed to be precursor to birds.

The Microraptor is believed to be the first two-footed dinosaur to have feathers on its body, which could have provided lift during brief gliding or flight.

The wind tunnel tests revealed that the Microraptor was a good glider, but likely spent most of its time on the ground foraging. Still, the creature was probably able to climb high enough to glide around 100 meters, the scientists say.

Some scientists had wondered if the position and orientation of the Microraptor’s legs and wing shape could have impeded possible flight, but the testing revealed it not to be a factor.

"Microraptor did not require a sophisticated, 'modern' wing morphology [shape] to undertake effective glides," according to the paper, published in Nature Communications. “Symmetric feathers first evolved in dinosaurs for non-aerodynamic functions, later being adapted to form lifting surfaces."

Here's a video showing the wind tunnel testing:

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by: Doug Bana from: USA
September 19, 2013 3:59 PM
These interdisciplinary approaches may present difficulties in language, perspective, etc; but they are essential to deepening the understanding of what movements and habits past organisms were capable of. Thereby providing limits of the possibilities that could otherwise be endlessly argued by over zealous practitioners. Once the limits are discovered Occam's Razor can point us to an answer that can then be adapted when more information is found, or when the limits are defined more clearly.

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