Directorly Downwind Faster than the Wind

[PhiScience]

@ TechStuf:

WOW!!  Traveling directly into the wind without tacking.
You are right “phenomenal”.

[hartiberlin]

They have got it now.
Selfacceleration and driving faster than the wind.

This proves that that system is overunity I would say:

See their 3 new videos:

http://www.youtube.com/user/TraderTurok

Well done !

Regards, Stefan.

[Rapadura]

I just watched:

http://www.youtube.com/watch?v=aDzWh9J1dk4

And I have to ask:

A windsurf board mounted on wheels, with a big sail, can not achive a greater velocity than this "wind car"?

Another question: the terrain is downhill?

[Cloxxki]

There have been ice skaters standing inside wings (a whole race scene even), reaching up to 4x the speed of wind, by going neither down or up wind. Lateral tracking on the ice, low friction. Approaching the DOWNWIND velocity I suppose, but adding a lateral vector that happens to be great (90 degrees if possible would offer infinite speed).

As a tall man, and a former mountainbike racer, I've had odd things happen in tailwind. One partical race, on a beach, very fierce stable tailwinds, I was hitting pain threshold (high cadance) at 55kph. I did that for half an hour. Near the turnaround point I wanted to finally catch up with the group of riders in front of me. I decided to hit 60, going through the pain, as 55 was our mutual cruising speed apparently. When I (nearly) hit 60, I gave up, the pain was too great for me, being halfway into a race. However, I did not slow down to equilibrium as quickly as one would expect. I "sailed" towards the group, after the initial push to reach the speed. I don't yet really know how P=MV2 works, but I but it may be part of it. Is it really harder to accelerate a mass from 30-60 than 0-30, excluding friction?

If the propellor mis-matches the wind and ground speeds, I can imagine a lateral thrust component is created. Or in simpler terms, the prop bend the wind around, verhicle is hit from the side, and gets to sail the side winds every sailor and surfer spends his days seeking.

This stuff is amazing. understanding it, may bring new propellor shapes that will enable us to just travel a lightweight cart on a windy day. Very fast down and along the wind, still OK agianst the wind. I was aware of the against the wind vehicles, and thought them up as a kid. Just didn't know at the time it was not down yet. A simple matter of gearing down the wheel axle speed relative to the propellor (air speed). No odd thigns happen there, it's not like it goes faster than a balloon downwind.

[triffid]

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