Directorly Downwind Faster than the Wind

[Cloxxki]

Animation is top view of a turbine, central shaft is vertical with the ground. Wind shown as coming from above. It is nothing like a prop. I am proposing to substitute the blade for props. Nothing easy about my idea.

gmeast who posts on energetic forums and youtube, built this thing, the French inventor apparently only made a patent, which was not maintained, and now int eh public domain. gmeast made the same thing, and found the patent after. It seems to turn pretty quickly to me. Speed of course is less important than the energy that can be extracted at the central shaft via a load/generator.

OK, so the blades turn on the rotor at half the rotor's rpm, but in one position of the device, the blades always pass in a given orientation. However, if you'd paint them in different colors back/front, I believe now they will switch sides.
NOT good for my propellor idea.

To have a chance of working with propellor replacing the large vertical blades, the propellor blades will need to be phased as well, reversing thrust. Reversing rotation direction of the propellors might be easier to engineer, but it makes my head hurt to figure out whether that's good or bad.

The back-thrusting prop that sit full in the wind (9:00 of animation), will have great thrust on the central shaft, as the DDWFTTW cart. At 3:00, prop blades will need to be perpendicular to the wind direction (vertical in animation), and reverse thrust for the next half-cycle.
I have a good feeling about this, seems it just might work to get the thing spinning fast, and extract good energy from the wind.

Perhaps a similar setup, stretched out rather and circular, without the thrust reverse, and the against the wind part being shielded from the wind, would be both simpler and more efficient. The props when exposed to the moving wind, would be DDWFTTW. In the tunnel or shield on the way back, apparent wind speed is reduced some, to have thrust there as well.

[Cloxxki]

No-one understanding my little idea above?
Many wondered how the DDWFTTW cart might contribute to wind energy, this might be one way.

If the prop is generation a greater wind speed difference by thrusting back, and driving the generator by moving DDW, returning at low resistance away from the wind, this to me seems like a potentially very efficient system. Wind speed behind the turbine would be lower than behind a regular fan of equal size, depite the prop as a whole moving through space faster than the wind.

If the prop on the DDWFTTW car can exert greater force when being driven by the wheels (hence the cart going faster), than a similarly geared prop on a seperated drive shaft, might as well extract more energy from the wind, per surface unit of the blade diameter, compared to a statically placed one.

[helicoil]

shes a runner

http://www.fasterthanthewind.org/search?updated-min=2010-05-01T00%3A00%3A00-07%3A00&updated-max=2010-06-01T00%3A00%3A00-07%3A00&max-results=15

[ramset]

Helicoil

Thanks for the update!

When are they gonna make that nice slow upwind tack?
{wouldn't that be nice}
3x down wind   2x upwind 

Chet

[Pirate88179]

Man, they are really documenting their efforts really well.  This is a most fascinating design and their results appear to be incredible.  I wish them the best of luck.

Bill