Author Topic: rotating cylinders replace sails  (Read 3448 times)

Reginald Ret

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rotating cylinders replace sails
« on: February 19, 2009, 11:32:12 am »
http://www.popularmechanics.com/blogs/science_news/4235579.html
Quote
The towers utilized the Magnus effectówind currents striking a rotating cylinder exert a force approximately at right angles to the direction of the wind. After an initial jumpstart from the motors, the cylinder's motion caused the ship to advance, PM reported. Its designers claimed the vessel outran other sailing ships as well as freight steamers.

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


http://www.boatdesign.net/forums/boat-design/everything-old-new-again-flettner-rotor-ship-launched-24081.html
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On the New Orleans-Jamaica route, where winds are usually unfavorable, the fuel savings was an incredible 36 percent, and the speed was up 18 percent. If the ship were used on similarly favorable routes, the payback would fall to an astonishing 1.7 years. "

http://en.wikipedia.org/wiki/Flettner_ship
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Stephen H. Salter and John Latham recently proposed the building of 1500 robotic rotor-ships to mitigate global warming. The ships would spray seawater into the air to effect Cloud reflectivity enhancement.[1][2]


I would never havve thought of that.
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rong

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Re: rotating cylinders replace sails
« Reply #1 on: February 19, 2009, 11:45:06 am »
science throws a curve ball?
"he was a smart feller who felt smart"