I'll add one qualification. Assuming the propeller has a controllable, reversible pitch, it might be possible, after a long enough vehicle acceleration to a speed nearly equal to that of the wind (during which the propeller too is extracting energy from the wind - and adding drag in the process), to reverse the pitch of the propellers and to use the stored rotational energy in the propeller to accelerate the vehicle further through the clutch & gearing to the wheels. However, that is not a sustainable thing, in that the rotational energy will soon be dissapated and the vehicle will quickly slow down to speeds well below the wind speed due to friction.
Yes. And that's exactly why I posted the information on sailing vectors several pages back. Unfortunately, nobody seemed to read them.
Well if the energy source is, as you say, the speed of the wind relative to the ground, then, when the vehicle reaches a speed relative to the ground equal to that of the wind, what is the mechanism by which the wind transfers additional energy to the vehicle to accelerate it further?
In the vehicle pictured there is no sail, ...
There's your money video for explaining this thing
We back to the ice boats once more even those one of the people who claimed to be involved in this device/car agree that an ice boat can not go faster then the wind downwind to the wind.
cycloptichorn wrote:There's your money video for explaining this thing
LOL -- that's a good one for those who realized that a sailboat can have a downwind VMG of greater than windspeed while on a reach. Unfortunately there is a lot of ignorance around regarding something that has been being done by traditional sailing rigs for near a century now.
A flywheel would do a similar thing as I had pointed out many pages ago or any other numbers of energy storage devices including changing the pitch however this would not be a steady state ability.
With wind directly behind your sails there is zero force from that wind at the wind vel/speed.
And due to the design of the props here, the wind is never directly behind the 'sails' - even when it is directly behind the vehicle. Do you not understand this?
Yes, I understand it is the same kind of meaningless words games as had been used time after time in connection with other forms of perpetual motions machines.
Now my question is what is to be gain by trying, all over the net, to sell this concept and defend it from attacks.
After all it is not being wheel out as a power source or as a mean to do away with gas or electric driven cars.
No cold fusion with tens of millions in research grants within reach of the developers.
So what is the point of this hoax?
rosborne979 wrote:I read them!Yes. And that's exactly why I posted the information on sailing vectors several pages back. Unfortunately, nobody seemed to read them.