Fire v Sound

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Fire v Sound

Post by Rogue on Thu Mar 26, 2015 5:25 am

Guys Put Out A Fire Using Sound
The Huffington Post |  By Dominique Mosbergen
Posted: 03/26/2015

It may seem outlandish, but George Mason University engineering students Seth Robertson and Viet Tran say they’ve developed a way to extinguish fire with sound waves.



How can this be?

Low-frequency sound waves in the 30 to 60 hertz range -- “the thump-thump bass in hip-hop" -- can apparently separate oxygen from fuel,” Tran said, in a GMU news release.

“The pressure wave is going back and forth, and that agitates where the air is. That specific space is enough to keep the fire from reigniting,” Tran told the Washington Post.

This isn’t the first time that sound waves have been used to manipulate fire. Experiments and research reportedly date back decades; in 2012, the Defense Advanced Research Projects Agency (DARPA) released a video showing how a “wall of sound” could put out flames.

However, as New York Magazine notes, DARPA’s setup was both “bulky” and “impractical.”

There’s “nothing on the market that works,” Robertson told the Post.

For now, the students’ extinguisher has only been utilized to put out small fires that use rubbing alcohol as fuel, but they hope their invention might one day be adapted for consumer or professional use.
http://www.huffingtonpost.com/2015/03/26/fire-put-out-with-sound-seth-robertson-viet-tran_n_6945192.html


The video below appears to prove them right.
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Re: Fire v Sound

Post by Rockhopper on Thu Mar 26, 2015 6:00 am

Clever!

Tim.
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Re: Fire v Sound

Post by Lenzabi on Thu Mar 26, 2015 6:06 am

Very interesting!

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Re: Fire v Sound

Post by Rogue on Thu Mar 26, 2015 6:58 am


You'd need a pretty big one for bush fires, but who knows where this could go.
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Re: Fire v Sound

Post by Agartha on Thu Mar 26, 2015 7:16 am

Wow! Very clever indeed!! I love it when they show young people like these working to build constructive and useful things.... and whose trousers have a belt and are not hanging showing their underwear! LOL

...oh boy.. I am getting old!!!
hahahaha

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Re: Fire v Sound

Post by Kaere on Thu Mar 26, 2015 10:21 am

I wonder if you could dangle one from a helicopter, for bush fires I mean... or on a tank-like system, approaching slowly with big-ass speakers Very Happy

Imagine just having to park a fire engine sideways on the street and blast some noise briefly to put out a building fire *ponders*
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Re: Fire v Sound

Post by Rockhopper on Thu Mar 26, 2015 3:25 pm

@Agartha wrote:...oh boy.. I am getting old!!!
hahahaha

We never get old Ags just Policemen and Footy Players get younger! Cool

Tim.
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