Monocopter design takes cues from maple seeds

http://www.ebnmaryam.com/i/bto/20091021/compare-md.jpg The maple seed device seen next to actual samara seeds.

(Credit: Eric Schurr/A. James Clark School of Engineering, University of Maryland)
Remember as a kid being entertained by how maple tree seeds (or samara fruit) would spin like helicopters as they fell around you in the fall? I do, and that's why I love this prototype rotorcraft by graduate students at the University of Maryland's A. James Clark School of Engineering.

It's a remote-controlled monocopter with a design based heavily on the aerodynamic and geometric properties of maple seeds. Researchers have tried for years to create an unmanned aerial vehicle that could mimic maple seeds' spiraling fall. The results out of Maryland are awesome.

As you can see in the video after the jump, the patent-pending device uses just one blade to take off, as well as a stabilizer to keep it steady. It looks weird, but it works. This is a great example of nature influencing science.

The students say they've created he world's smallest controllable single-winged rotorcraft, with the most minuscule having a maximum dimension of about 3.7 inches and a wing equal in size to a natural samara. Graduate student Evan Ulrich says he thinks the 'copter could be mass produced as a toy for less than $100, which even sounds high to us given that one of the parts experimented with is a vibrating motor from a pager.

There could also be military or rescue applications: a flyer fitted with a small camera could easily be sent across an area looking for survivors--or targets.

But no matter what the flyer ends up being used for, one thing is sure: I want one badly.

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