Author Topic: 6 METERS VEDİKAL WİND TURBİNE BLADES  (Read 33584 times)

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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #33 on: April 20, 2016, 05:10:21 PM »
 the flat side of the blades aut side
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hiker

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #34 on: April 21, 2016, 02:01:28 PM »
Nice blades....I always liked carving out a set...made mine from ceader...looks like you really have your work-cut-out for you...😜
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #35 on: April 23, 2016, 02:07:25 PM »
blades 3 are okay
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #36 on: May 09, 2016, 03:04:16 PM »
OK blades friends
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #37 on: May 09, 2016, 03:14:44 PM »
and polyester coating netting
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #38 on: May 22, 2016, 05:27:09 PM »
The design of the blades assembly
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SparWeb

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #39 on: May 22, 2016, 07:57:56 PM »
Ambitious stuff!

I believe you will do better with 3 steel tubes as your struts, rather than lattices.  While the lattice can be much lighter, the drag will be tremendous.

Also the cross-bracing that you draw like this:

|----|
|   /|
|  / |
| /  |
|----|

makes me concerned for the long life of your turbine.

It is definitely NOT the same as this:

|----|
|\   |
| \  |
|  \ |
|----|

Although at first glance they may look the same. They are not.

The first design puts the cross-brace into compression.  The weight of the blade must be PUSHED up by the diagonal member.
If it is lightly damaged, this cross-brace can collapse.  In the resulting imbalance, the turbine will be destroyed.
During normal operation (assuming no damage) the compression load will switch to tension once per revolution, causing an alternating stress that will accelerate the fatigue cycle.

The second design puts the cross-brace into tension.  The weight of the blade must be pulled by the diagonal member.
If it is lightly damaged, the cross-brace will continue to bear load, and the damage can be found on later inspection.
During normal operation, the tension load will increase and decrease once per revolution, but the ratio of stresses is much less likely to cause fatigue failure.

You still have to deal with the vulnerability of the lowest brace to compression/tension cycling fatigue, but at least having the cross-brace the right way cuts the difficult problem in half.
No one believes the theory except the one who developed it. Everyone believes the experiment except the one who ran it.
System spec: 135w BP multicrystalline panels, Xantrex C40, DIY 10ft (3m) diameter wind turbine, Tri-Star TS60, 800AH x 24V AGM Battery, Xantrex SW4024
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #40 on: May 23, 2016, 03:57:23 PM »
Thank you very much for your advice, my friend SparWeb
« Last Edit: May 23, 2016, 04:05:25 PM by atasan2006 »
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kitestrings

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #41 on: May 24, 2016, 01:14:16 PM »
atasan,

I'm curious why you wouldn't run the blade netting length-wise don the blade, rather than having many joints along it where it is flexing the most?  Maybe it doesn't matter once it is coated.  Just a thought.

Best, ~ks

atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #42 on: May 24, 2016, 03:04:14 PM »
atasan,

I'm curious why you wouldn't run the blade netting length-wise don the blade, rather than having many joints along it where it is flexing the most?  Maybe it doesn't matter once it is coated.  Just a thought.

Best, ~ks
I dont understand my friend please draw
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #43 on: May 24, 2016, 04:30:00 PM »
keep working
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #44 on: May 24, 2016, 04:33:26 PM »
continue pictures
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midwoud1

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #45 on: May 24, 2016, 04:36:55 PM »
Put the glasfiber  tissue like a sock on the blades . Strings in the blade lenght.
 Rgds. Fb  Midwoud1

atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #46 on: May 24, 2016, 04:38:02 PM »
continue
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #47 on: May 24, 2016, 04:42:10 PM »
Put the glasfiber  tissue like a sock on the blades . Strings in the blade lenght.
 Rgds. Fb  Midwoud1
There are also examples
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kitestrings

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #48 on: May 25, 2016, 07:45:28 AM »
Quote
I dont understand my friend please draw


kitestrings

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #49 on: May 25, 2016, 08:02:04 AM »
Jim Sencenbaugh, who did a lot with wood blades, was using a heat-shrink Ceconite dacron "sock".
http://www.aircraftspruce.com/

He would seal the wood with epoxy (West Systems), shrink fit the fabric, then epoxy finish.  Labor intensive, but reportedly very durable.  ~ks

Adriaan Kragten

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #50 on: May 25, 2016, 12:59:37 PM »
A theory to determine the optimum chord for a H-Darrieus rotor with a certain rotor diameter D and a certain number of blades B is given in chapter 3 and 4 of my report KD 601. The theory is derived from the theory of horizontal axis wind turbines given in my report KD 35. To my opinion a H-Darrieus rotor should have a symmetrical airfoil like the NACA 0015. Report KD 601 and KD 35 can be copied for free at the menu KD-reports of my website: www.kdwindturbines.nl.

atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #51 on: June 26, 2016, 03:31:28 PM »
shaft end blades
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #52 on: June 26, 2016, 03:34:47 PM »
blades
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Mary B

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #53 on: June 26, 2016, 08:28:24 PM »
That is going to take some serious bearing to support it! Like truck rear axle...

Timbersawz

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #54 on: July 24, 2016, 04:34:11 AM »
 Thats epic, great to see! Nice work

atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #55 on: July 31, 2016, 01:52:20 PM »
hello friends, I started installation
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #56 on: July 31, 2016, 02:01:51 PM »
the weather is too hot
« Last Edit: July 31, 2016, 02:09:09 PM by atasan2006 »
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #57 on: July 31, 2016, 02:15:30 PM »
I work in the mountains
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #58 on: July 31, 2016, 02:20:30 PM »
The turbine will be great
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #59 on: July 31, 2016, 02:25:25 PM »
I made the first vertical turbine
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paara

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #60 on: August 01, 2016, 02:20:41 AM »
Will be interesting to see how much power it will produce. How high is the tower? Wish you good luck.

kitestrings

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #61 on: August 01, 2016, 03:39:33 PM »
How much does it weigh atasan?  Good luck.  ~ks

atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #62 on: August 01, 2016, 03:51:50 PM »
Will be interesting to see how much power it will produce. How high is the tower? Wish you good luck.
thank you very much tower 12.89 meters in length
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atasan2006

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #63 on: August 01, 2016, 03:56:59 PM »
How much does it weigh atasan?  Good luck.  ~ks
hello The total weight of 3200 kg and the third blade OK
« Last Edit: August 01, 2016, 04:28:17 PM by atasan2006 »
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Mary B

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #64 on: August 01, 2016, 06:11:59 PM »
I would double guy that tower... I think you are seriously over loading it!

skid

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Re: 6 METERS VEDİKAL WİND TURBİNE BLADES
« Reply #65 on: August 01, 2016, 09:59:02 PM »
How will you balance the rotor? You could leave it horizontal and spin it. The heaviest blade will go to the bottom. You could add weight to the other blades or subtract if possible from the heaviest...