Darrieus Wind Turbine Prototype

[Mrinfoone]

Honestly the inventor did these without the center pads and outside ones ( red ones you have remove them. They make the vawt slow down more than help. Plus make the blades more slimmer and wider in the center like canoe paddles. This will increase the speed and torque dramatically..try it.

[jmnic63]

you need more surface area to push the fan blades faster

[vetteracer98]

I built a machine that was used to warp (bend) an airfoil designed after a helicopter blade that was 50ft. long. There were three blades on that turbine that was set in Monument, Colorado in the early '80s. It spun so fast that it had brakes on it so it would not overspeed. Everything was computer controlled. Too bad the man spent his money in the wrong places and ran out. It had great potential. Keep trying.

[MrFakhre]

whats most impressive is this has 98,000 views.

[MMinecrafTT]

mute :P

[MrKiller379]

good

[pinkyzoey]

It might make enough power to run your toothbrush if you go out and push it every hour.

[gautam33]

I remember Keplinger hall. I am surprised that thing went on for over five mins in that location.

[cozodapo]

interesting construction I like the simplicity

[Deathzilla7]

It may keep going but the wasted energy must be astronomical. A regular propellor turbine must be far more effective. No offense.

[walperstyle]

Why would you support the Chinese, build it in America. Keep the money in the country. Employ Americans.

[Porterjebazillanator]

So they tried building these in the 70s. They all failed within 2 years. The problem is that there is higher load around the equator than the poles. This gives you some nasty vibrational loads. Might want to read up on it.

[joohop]

SHIT

[IronHorsez88]

i never try to be rude, but please try again

[DANATENS]

BUEN INTENTO AMIGUITA, EXCELENTE !!

[sjh7132]

Okay didn't really think out the rope idea. It's just going to be hit by the outer blades. But my point is if you can give it some initial speed so the blades are moving faster than the wind, I bet it will take off and run.

[sjh7132]

At that speed your outer blades aren't doing anything. If you can spin it up, they will take off, and the thing may scare you.

Wind a rope around the center and give it a pull start and see what happens.

BTW air foil shape isn't all the critical, I've had flat pieces of cardboard spin, but the bigger the diameter, the harder it is to get them to start.

[DeanC993]

Hi you might want to remove the outer blades and make bigger savoinus blades! Anyway its pretty cool but if you were going to put on a genertor it would be best to put bigger and more efficent savoinus blades(:

[Indracart]

jajaja balla patata

[Anubis1372]

not bad...good work!

[tressner]

i like the leaf blower in the background

[CablloBlanco]

Needs some tweaking .... keep working at it!

[macrumpton]

I think that it would spin a lot faster if you removed the outer blades and just kept the internal pvc savonius rotors.

Darreius rotors typically need to be spinning a lot faster than you have it going in order to start working correctly.

[alliismylover]

Keep in mind, it is at ground level, there is a wall right behind it, and the wind speed is less than 6mph, the standard start up speed for horizontal axis turbines. My my accounts this things is doing better than most.

[pip1503]

I disagree. You have a savonious wind turbine in the middle of it.

So basically what it seems you have done is make a savonius turbine with cool looking darrieus blades around it that are doing nothing.

If that was a real darrieus it would be spinning alot faster.

[NSResponder]

looks like you've done a rather haphazard job of shaping the airfoils.

-jcr

[alliismylover]

That is in fact correct. This was the gen.1 version. I have since changed the drive shaft system so it will driect drive to a generator, and have put on real foam and fiberglass airfoils. As soon as some good wind comes up I'll post a video of the newest version (gen.4).

[caucazoidandroid]

If you click on some of the other windmill vids, it might give you some ideas. They usually spin much faster. Sounds like there's too much axle friction, too.

[ChrisOHenning]

Your turbine is runnin cos of the small savonius on the axis. A darrieus would turn much faster.

But keep on.

[alliismylover]

We thought of that already. With the savonius it was spinning 15-20 rpm depending on the wind. When we took the davonius off it was spinning 10-12 rpm same wind. So a notable difference, but it was still spinning of its own accord.

Just finished an update.. much better airfoils of nonexpandable polystyrene and fiberglass

there wasnt enough wind to test it when it was finished, and I have left the university for the summer, but eventually a new video will be up

[Flap102]

Good work!!!! Best of luck in your endeavor!

[PappyDan]

as hard as the wind is blowing in the back ground and across the mic.

that thing should be moving very fast.

time to see what you did wrong.

[lisanoeljo]

this is very interesting.

[tawnysamathmagician]

this is pretty amazing. YAY FOR MAKING THINGS (that spin) OUT OF STUFF!