handofdave
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Windpower on the end of a string
Mar 30, 2009, 14:41
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This is a really interesting approach to dealing with some of the limitations of traditional fixed, bladed wind turbines.
http://www.treehugger.com/files/2005/12/magenn_air_roto.php
I have super-8 footage from the late seventies showing a relative of mine flying a kite that uses the exact same design (without the helium). On a moderately windy day it could really torque up pretty good out on the end of that line.
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PMM
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Re: Windpower on the end of a string
Mar 30, 2009, 19:05
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Gets rid of the problem of torque transmission putting stress loads onto the structure of the house, as happens with domestic wind turbines too.
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handofdave
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Re: Windpower on the end of a string
Mar 31, 2009, 14:35
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I like the way you can pay out more line if the winds are better higher up. I suppose you'd want to put lights on them to keep low flying aircraft from crashing into them.
Seems they'd be less harmful to migrating birds- less surface area, no large disk of swirling blades.
The cost is less, too... ground prep is minimal... just some sort of anchor and the electrical parts.
Only thing I can see that might be a downside is that weight limitations would seriously limit the size of the alternating generators that are attached to the axle. How heavy would they have to be to produce a significant amount of power to a dwelling?
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HI DEN
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Re: Windpower on the end of a string
Apr 03, 2009, 09:15
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There seems to be much to discover in that area.. A friend of mine has been designing all kinds of "wind yoni's" from recycled scrap, supposed to be quite effective too..
I didn't find a link to those. But here's some interesting points too..:
http://koti.mbnet.fi/maxt/nergfarm/nergfarm.html
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bauheed
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Re: Windpower on the end of a string
Apr 07, 2009, 13:43
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interesting. thanks for posting this. As part of my job I work with invenors to help develop and commercialise their ideas, and I am currently working with a guy who has come up with something that has similarities to this (it also has several fundamental differences, which I can't reveal 'cos I am bound by client confidentiality). Anyway, we're currently looking for a commercial partner and / or funding to help develop the idea further...hopefully we will see his idea realised in the future!
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