Acceleration of a mass on a tilted axis (William Skinner)

Started by d3x0r, 2014.07.04, 08:56:35

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d3x0r

Maybe this was already covered somewhere, didn't find anything obvious in search for 'william skinner'

https://www.youtube.com/watch?v=rxIRaJlTD4Y

https://www.youtube.com/watch?v=JolNozy8UEY (maybe I should go bother them on energetic forum)
https://www.youtube.com/watch?v=pw3lpFvuzps
https://www.youtube.com/watch?v=9-KVo4lxHgE (thejohndevice.com)

So I've been considering this.  The only way something can fall is if it is higher than it started....
from equilibrium/stop condition, the first motion at the top actually raises the weight slightly.
gravity acts not on an entire body... but is really about the center of mass....



https://www.youtube.com/watch?v=uiyMuHuCFo4
https://www.youtube.com/watch?v=rCw5JXD18y4


*thinks* ... need some better sketches and models...
-----
I'll have to dig way back into memory and pull out some calculus I guess...
as the top moves (rotates is the simpler model), X degrees, then the center of mass is lifted, and then falls at an angle and creates a rotation as it falls back to its original height.   This path is always longer than the height it was raised, so it must take a longer time, therefore it's accelerated by gravity for a longer amount of time than the time which it took to raise the weight in the first place.

if the angle at the top of the shaft is very slight, then less work is applied to raise the weight, though it then has a much shorter distance to fall... but the angle of incline should resemble something like a cylinder rolling down a hill accelerated by gravity.  So it's forward motion will be sin(slope) * m * g...   But; that would only work if slope < 90 degrees... if it's vertical m has no bearing.... so then is it really a cylinder on a slope?
http://dev.physicslab.org/Document.aspx?doctype=3&filename=RotaryMotion_RotationalDynamicsRollingSpheres.xml

feather and hammer drop on moon; they fall at same rate...
https://www.youtube.com/watch?v=_mCC-68LyZM  (okay force is not acceleration)  so a heavier object gets more force applied

(distraction; not applicable: hmm a long chain falling out of a beaker goes up first... like way up over the beaker 
https://www.youtube.com/watch?v=_dQJBBklpQQ
http://www.nature.com/news/physicists-explain-gravity-defying-chain-trick-1.14523
https://www.youtube.com/watch?v=QTC3bKea2Yo (longer chains from higher heights)
)

Hmm... well due to inertia, the mass falling vertically must have the same force being applied if it's non vertical, and something like the cos(angle) vertically and sin(angle) around axis or rotation... but then to get to the bottom it must apply that force for a longer time than it took to raise the object in the first place, resulting in a net acceleration of the object greater than the initial impulse....

search for "gravity acceleration tilted axis -accelerometer -digital -sensor" didn't reveal any useful math... so maybe again it's a case I don't know what physicists would call it?

or 'acceleration deflection gravity around tilted axis -accelerometer -sensor'

ion

Nice find d3x0r

The third video you posted (by David Quirey) is the clearest live explanation of the Skinner device, and he demonstrates it actually working.

Now whether it can develop power multiplication is another matter and yet to be proven by anyone.

Thanks

Regards, ION
"Secrecy, secret societies and secret groups have always been repugnant to a free and open society"......John F Kennedy


d3x0r

Hmm; I didn't notice the first time that the drive on original Skinner was linear.
I guess as the eccentricity of the drive ellipse flattens, you require more work to raise the weight to a higher level, but you get a longer cycle where the weight's falling is... going to be ahead of the drive.  that may be an interesting path to a solution of acceleration.

Picture; Red is highest force applied to lift weight, pink is lower force, but still requires power, light blue is 0 to slight gain in drive, dark blue is positive feedback on the drive, where the forward acceleration will outrun the drive.

Looks like a sum of equal parts to me... or a continuous loss... Well it will be a lot of light pink and light blue segements so it will balance to zero... the first slight impulse will require power, but the weight will outrun the drive quickly being slightly blue, which in turn will slow, and the drive will catch up slightly and apply more force....



If it did work; then a massive flywheel driven by a low power input would also work... and so would a resonant LC tank circuit.

 net zero... pendulum driven...  at 0:57