General > General Technical Chat
Force multiplier
HuronKing:
--- Quote from: james_s on February 13, 2023, 11:35:39 pm ---
--- Quote from: IanB on February 13, 2023, 11:32:52 pm ---Responding is not productive.
--- End quote ---
How this has taken this long for anyone to figure out I really don't understand.
--- End quote ---
Beats me but its doubly hilarious now that I know for a fact that the OP had the opportunity to converse directly with the inventors of the wind device that has driven the OP to insanity and they eventually told him to f*ck off.
And now he's here... God knows why. :-DD
PS
There is of course a fascination in picking apart pseudoscience which is one of the reasons I enjoy Donald Simanek's website so much:
https://dsimanek.vialattea.net/museum/unwork.htm
electrodacus:
--- Quote from: HuronKing on February 14, 2023, 12:01:09 am ---Beats me but its doubly hilarious now that I know for a fact that the OP had the opportunity to converse directly with the inventors of the wind device that has driven the OP to insanity and they eventually told him to f*ck off.
And now he's here... God knows why. :-DD
--- End quote ---
The inventor is of course clueless as to how his machine works else he will never made it as it makes no sense.
He thinks his vehicle is powered directly by wind power no energy storage involved so of course he will predict that he can travel at 2x or 3x the wind speed directly downwind and never slow down.
He never tested if his prediction works but he is sure it is.
The truth is that his machine blackbird and also the treadmill model Derek from Veritasium showed use pressure differential energy storage to be able to exceed wind speed directly downwind and that also means that once it gets to peak speed it will not stay at that speed but start to slow down as all stored energy is used up and will slow down to below wind speed where it can recharge and repeat the same again.
Not only that but Derek invented math to look like it will work but is a complete fail if you test that invented equation in any other case than when vehicle is above wind speed.
But this case (a) is much simpler and it seems it is still got wrong despite me having the proof that energy storage is used.
If you ask what the proof is then just answer that last question that everyone seems to be avoiding now.
HuronKing:
--- Quote from: electrodacus on February 14, 2023, 12:20:18 am ---
--- Quote from: HuronKing on February 14, 2023, 12:01:09 am ---Beats me but its doubly hilarious now that I know for a fact that the OP had the opportunity to converse directly with the inventors of the wind device that has driven the OP to insanity and they eventually told him to f*ck off.
And now he's here... God knows why. :-DD
--- End quote ---
The inventor is of course clueless as to how his machine works else he will never made it as it makes no sense.
--- End quote ---
:-DD :-DD :-DD :-DD
--- Quote ---He thinks his vehicle is powered directly by wind power no energy storage involved so of course he will predict that he can travel at 2x or 3x the wind speed directly downwind and never slow down.
He never tested if his prediction works but he is sure it is.
--- End quote ---
You're a goddamn liar - and this is why spork/Rick Cavallaro told you to f*ck off.
james_s:
I wonder how much room there is for further optimization to increase performance. Perhaps a flexible driveshaft to optimize the thrust angle would offset the mechanical losses added by the shaft? Variable pitch prop? The whole vehicle is an interesting concept that at a glance is not intuitive, but obviously it has been proven to work and after seeing it work the description of how it works does make sense.
electrodacus:
--- Quote from: HuronKing on February 14, 2023, 12:32:45 am ---You're a goddamn liar - and this is why spork/Rick Cavallaro told you to f*ck off.
--- End quote ---
Lying about what ?
Every time the vehicle body is touched in that video the energy storage is charged (no longer a floating body).
As long as the vehicle is restricted with hand or any other object touching the body it is nothing more than a treadmill powered fan.
If you take a video of that vehicle after you release from hand and measure in the video the acceleration rate you will see that acceleration rate drops as the energy storage is used up.
That means vehicle will get to a peak speed (point where stored energy can no longer accelerate the vehicle as pressure differential is converted in to vehicle kinetic energy) and then all friction losses will be powered by that stored kinetic energy meaning kinetic energy drops thus vehicle speed drops.
But yes if you make incomplete tests do no measurements you can come up with wrong conclusions about what happens.
So that video is not a proof of anything other than a majority of people not understand basic physics like Newton's 3'rd law and energy conservation.
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