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camccann | 15 years ago

"...this is a vehicle that, in still air, would go uphill under its own lack of power..."

No, it wouldn't. The vehicle extracts energy from the velocity difference between the air and the ground, which it converts into forward motion. This is essentially the same mechanism used by sailboats tacking against the wind, and despite being counterintuitive at first is well-established. The speed is limited only by gearing and mechanical efficiency--an idealized device could accelerate arbitrarily.

While the Wired link doesn't explain how the device works, the same idea has made the rounds on the internet many times before; links to detailed descriptions were already posted in the comments here, which I assume you didn't bother to read before implying that this is a scam?

"Trying to put skeptics on the defensive"

Sticking with a knee-jerk reaction against something while ignoring further information that supports it gives "skeptics" a bad name.

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Semiapies|15 years ago

"This is essentially the same mechanism used by sailboats tacking against the wind, and despite being counterintuitive at first is well-established."

Tacking is different from this. This is using ground-speed to generate thrust, as even the shills acknowledge.

"The speed is limited only by gearing and mechanical efficiency--an idealized device could accelerate arbitrarily."

Arbitrary magic acceleration inside an atmosphere should be your first clue that something's extremely wrong here.

And yes, I looked at the various forum links that turned up, which made very clear the very typical full-court astroturf press going on (like the argument above with someone who registered only to argue with unbelievers in this thread). You might take a look.

"Sticking with a knee-jerk reaction against something while ignoring further information that supports it gives "skeptics" a bad name."

Skeptics get a bad name because they don't join in the squee.

All I ask is that you look at the further information. Check back on this story in months and years and see whether it pans out.

camccann|15 years ago

Arbitrary magic acceleration

...in other words, either you didn't actually read the explanations or you didn't understand them. The energy is being extracted from a velocity difference between two media. And no, tacking works on exactly the same principles in order to sail upwind. Some manner of mechanical linkage decelerates one or both media with respect to the other, extracting usable energy. In the case of a boat it's the combination of the keel and sail; for this vehicle, it's clever fixed gearing between the fan and wheels. In either case, the velocity of the vehicle relative to either medium is nearly irrelevant.

Check back on this story in months and years and see whether it pans out.

The idea behind this vehicle has been floating around the internet for at least three years, by the way.

If you're really so confident that you're correct, I'm sure one of the "shills" would be happy to make a wager with you, mediated by a neutral third party. What kind of odds would you accept for a wager that the vehicle doesn't work?