On 16:59, stork3264@xxxxxxxxxxx wrote:
Hi PBT,
There is a lot of misinformation and "theories" on force produced by
asymmetric capacitors. For instance one misconception is air thrust
causes lifting force. Actually, any air thrust is 2-3 orders of
magnitude less than lifting force.
A reference about this extraordinary affirmation would be interesting.
The mechanism of ionic wind is well understood, and the effect can be
even simulated with results that agree with experiments.
There is nothing of "asymmetrical capacitor" in these devices. They
don't store significant charge, and are practically pure nonlinear
resistive elements.
Some folks deny lifters can be powered with HVAC. Just shows how
much confusion and false theory surrounds lifters. All I can say is
do the experiments.
AC may work too, specially low-frequency AC, because the travel time
of the ions across the device is small. It just happens that
symmetrical AC sources of sufficient voltage are not so easy to build
and there are less experiments done with them. Anyway, the current
through the lifter would be somewhat asymmetrical due to the
structure. I have tried a 5 kV NST, but the thrust produced was very
small. Even a 100 uA electrostatic machine worked better. Enough
voltage is important.
Antonio Carlos M. de Queiroz
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