Upload

Loading icon Loading...

This video is unavailable.

Directly Down & Up Wind Faster than the Wind

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to like eyytee's video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to dislike eyytee's video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to add eyytee's video to your playlist.

Uploaded on Aug 15, 2010

http://en.wikipedia.org/wiki/Sailing_...

This animation shows how windpowered rotor vechicles can go directly downwind or directly upwind, faster than the true wind. To simplfy matters the air mass is reduced to a thin column of air, that moves relative to the ground, and colides with the rotating blade of the rotor.

The only difference between the downwind and the upwind case is the pitch of the blade. In the downwnd case the rotor works as a propeller, turned by the wheels. In the upwind case it works as a turbine, that turns the wheels.

For analysis see this paper:
http://www.ewec2009proceedings.info/a...

Directly downwind faster than the wind :
http://www.fasterthanthewind.org
http://www.youtube.com/watch?v=5Ccgmp...

Directly upwind faster than the wind :
https://fasterthanthewind.wordpress.com
http://www.youtube.com/watch?v=F7PNSy...

Loading icon Loading...

Loading icon Loading...

Loading icon Loading...

Loading icon Loading...

Ratings have been disabled for this video.
Rating is available when the video has been rented.
This feature is not available right now. Please try again later.

Loading icon Loading...

Loading...
Working...
to add this to Watch Later

Add to