Directorly Downwind Faster than the Wind

[TechStuf]

But it is not producing its own energy it is getting it from the treadmill

Certainly not 'all' of it.  In at least one of the videos, it continuously runs to the top of the treadmill up an incline.   I suspect there's more than meets the eye here.


TS


P.S.  I'm unfamiliar with "friction gravity".....?

[Pirate88179]

@ allcanadian:

I agree with you.  Hey, I just figured out why this won't work in a gym on a flat floor.  NO WIND!  Ok, so I may be a little slow, but I usually get there eventually. Ha ha.

Bill

[PhiScience]

Hi

http://home.att.net/~rcsailcars/index.htm
This looks like a lot more fun to play with, and not only can they travel faster than the wind going downwind but also they can travel back upwind.

There are many good sites on the web that can teach you how to get more energy from your sail or airfoil like this one.
http://www.sailingworld.com/from-the-experts/boat-speed/unlocking-the-mystery-of-sail-controls-1000065648.html

[TechStuf]

Not bad, but I think Stuttgart's efforts are, by comparison, fantastic....

http://www.sciencedaily.com/releases/2008/08/080827104702.htm

64% of windspeed achieved upwind is....in a word, phenomenal.


TS

[Pirate88179]

@ TechStuf:

That was really cool.  It appears this vehicle works along the same principle as the smaller treadmill "toys".  Of course, this one has pitch controlled propellers and the prop can be spun around backwards so I can see how this would work.  Thanks for posting this.  That vehicle is very advanced and I am happy to know about it.

Bill