Down wind faster than the wind?, page 2

reply to post by jibeho

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math is evil i think im just going to take up sailing and go with the trial and error method

reply to post by neonine

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No I think you picture it right.
Moving parts cause friction
Wheels cause friction
Propeller causes friction and turbulence

All of these cause drag.Either by conversion of that wind speed to friction/heat.Or by wind redirection and turbulence of the propeller.

It would be more effective putting up a sheet between two poles.

Props cannot create "more windspeed" unless they're powered mechanically.

Originally posted by jibeho
reply to post by neonine

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It all gets pretty mind numbing when you start looking at all of the formulas. I'll leave all of that to the mathletes. I just sail as fast as the wind will allow me to.

Yeah, you can go faster than the wind when you're at an angle to the wind usine Bournelli's. Ice boats are even better than sailboats at this since there is less friction loss. I've seen some mathematical equations whereby sailing at an angle not only results in your "ground speed" being faster than the wind, but the overall "net" speed, in the direction of the wind, can be faster than the wind, again using Bournelli's. I'm not too sure about the "net" part though, maybe in a perfect mathematical situation it could work.....

But directly down wind? Nope. There's no way to do it without the lateral interaction of the skate blades and Bournelli's.

He seems to think that it depends on the interaction between the wind speed and the ground. He doesn't get that if the vehicle is in motion, whether it's a boat or a cart, the interaction is between the wind and the vehicle, so going down wind faster than the wind is not possible.

We need Rube Goldberg on the case.

Hmm.. Interesting stuff. Reminds me of the forever car.

reply to post by Freezer

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What are we waiting for? Send that baby up to Detroit.

THey could use a little help right now.

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