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Airborne Wind Turbine Cuts Noise & Energy Costs
5/9/2012

Altaeros Energies recently completed tests of a 35-ft scale prototype of its Airborne Wind Turbine (AWT) for remote locations, which will harness energy at altitudes above 1,000 feet.
  (Source: Altaeros Energies)
Altaeros Energies recently completed tests of a 35-ft scale prototype of its Airborne Wind Turbine (AWT) for remote locations, which will harness energy at altitudes above 1,000 feet.
(Source: Altaeros Energies)

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warren@fourward.com
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Tethered Power
warren@fourward.com   5/10/2012 12:09:29 PM
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And how does it handle lightening?

ironhorse
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Re: Airborne Turbine
ironhorse   5/10/2012 12:09:29 PM
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The mass grows as the cube of the diameter. Given that this is a LTAV, doubling the diameter would make it 8 times lighter!  e.g., 1 ton of displacement may become 8 tonnes.

ironhorse
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Re: Tethered Power
ironhorse   5/10/2012 12:15:30 PM
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How does a church steeple handle lightning?

Ann R. Thryft
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Re: Does it need a babysitter?
Ann R. Thryft   5/10/2012 12:17:36 PM
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Technical details were extremely scanty and the company didn't choose to divulge anything else, so we don't have that information.

warren@fourward.com
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Re: Tethered Power
warren@fourward.com   5/10/2012 12:20:20 PM
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I guess my question is as a high-altitude lightening rod, can the tether handle the current?  Heavy-duty ground wire would be a lot of additional weight.  The tether is already handling the power generated.  And can the ground power receiver distinguish between the two without catastrophe? 

Ann R. Thryft
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Tether questions
Ann R. Thryft   5/10/2012 12:21:30 PM
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I had similar questions about the tethers and how strongly they are attached, given the fact that winds are also stronger at the higher elevations this is designed to operate in.

Ann R. Thryft
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Re: Tethered Power
Ann R. Thryft   5/10/2012 1:11:45 PM
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Warren, good questions. I also wonder about the tether material and how it handles different voltage levels, as well as the whole ground system for receiving and distributing power. The company says it is looking for partners for commercialization. Perhaps once it gets past this stage we can learn more details.

JimT@Future-Product-Innovations
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Re: Tether questions
JimT@Future-Product-Innovations   5/10/2012 1:22:49 PM
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When you think about the Wind Farms we've seen – rows and rows of gigantic wind turbines in the Southwestern part of the country – I can imagine these things becoming commonplace in the sky – so much so that pilots would have to have them charted;  (that shouldn't  be too cumbersome of a task, considering NASA is tracking 1000's of pieces of space debris).  This concept seems financially lucrative and technologically feasible.  Two-Thumbs-Up.

Rob Spiegel
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Re: Does it need a babysitter?
Rob Spiegel   5/10/2012 1:35:20 PM
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At any rate it's a good idea simply because it aims to harvest wind in a location where there is more significant wind than near the ground. I'm also interested to see how things work out with wind harvesting out on the ocean. That's another attempt to get to stronger winds.

Rob Spiegel
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Re: Does it need a babysitter?
Rob Spiegel   5/10/2012 3:18:26 PM
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That could be, Warren. We'll have to see. You're right about the value of the energy. If it's significant, someone will figure out how to fit the maintenance in. Could be these turbines that go to higher altitudes might make the energy harvesting worth the trouble.

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