New type of wind turbine with Magnus effect?

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Pear Belle Helene
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by Pear Belle Helene » 19/05/07, 09:53

Thank you I received your email and the doc. So I will come to Bourbon in July and I hope that your wind turbine will bring satisfaction on all levels.

Good day to you .... under the greyness here yuck ... and without wind ;-)))
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jym
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by jym » 17/01/09, 16:13

Hello,
just to know when the product will be sold. (and in Belgium?)

please
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by Pear Belle Helene » 18/01/09, 09:30

Hello,

I saw this gentleman at an expo fair in St Amand but he did not present this wind turbine. Either it is still in test period or it does not work. I did not have time to speak to him but his site still works.

Bonne journée.
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Remundo
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by Remundo » 18/01/09, 10:30

If you like the Magnus effect wind turbine, see the Magéole.

It is done by Auvergnats de Polytech 'Clermont (formerly CUST: university center of science and technology)

it works, that's for sure. By cons, in performance, I do not know if it's top compared to a three-bladed.
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Obelix
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by Obelix » 18/01/09, 11:58

Remundo wrote:If you like the Magnus effect wind turbine, see the Magéole.

It is done by Auvergnats de Polytech 'Clermont (formerly CUST: university center of science and technology)

it works, that's for sure. By cons, in performance, I do not know if it's top compared to a three-bladed.


Hello,

Unable to find performance info!
Just an indication in the summary:
http://cat.inist.fr/?aModele=afficheN&cpsidt=9251295


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by Remundo » 18/01/09, 12:57

Hi Obelix,

Thank you for the link,

"theoretically" ... for sure.

The blades must rotate very quickly to obtain a significant Magnus force. This requires complex machinery.

Moreover, gyroscopic effects will appear, and I have not seen this written anywhere. You don't spin a moving axis "like that" at high speed.

that is to say that the blades turn so quickly on themselves they oppose by "inertia" to the change of position of their own axis of rotation (gyroscopic effect).

it's explained there for motorcycle wheels
http://www.mecamotors.com/e_theorie/01_ ... gyro1.html

The gyroscopic couple opposes the force of the wind which induces the rotation of the wind turbine, just as it opposes the leaning of the motorcycle when the rider is turning: it is even a stabilizing effect sought for the motorcycle when cornering.

For a wind turbine, a couple that opposes the rotation driven by the wind ... :?

So there is probably a compromise to be found between the speed of rotation (gyroscopic brake) and the Magnus effect (wind accelerator) obtained : Idea:

I prefer the ROBIPLAN :P
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by Obelix » 18/01/09, 15:18

Hello,

For the gyroscopic effect I still found an order of magnitude => 3000 RPM.
On the other hand I did not find a machine with three "blades" that of the bi-blades which must quite shake the axis of rotation of the whole because of the precession!
Even found a Magnus with vertical axis and vertical tubes with change of direction of rotation of the tubes at 90 ° from the wind!

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by Remundo » 18/01/09, 15:55

An efficient and robust Magnus wind turbine seems technically difficult to achieve.

Finally, I'm just waiting to see.

By the way Obélix,

Remundix published 2 or XNUMX odds and ends on ROBIPLAN and following pages from our National Pascal. :P

Had you seen? : Idea:

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by I Citro » 18/06/12, 08:43

:?: The ENE-sarl site no longer communicates on the magnus effect wind turbine ...
The concept would be abandoned. :?:
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by dedeleco » 18/06/12, 12:15

Impossible even to know what this wind turbine looked like, no idea of ​​its trick, different from the simple rotating cylinder ???


This has to tip over, by the complexity underestimated ?????

A large automatic skysurf may be just as good.
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