[NewCandle] Schlicher 'drive'

[Keith Nagel]

Hi Kyle,

Firstly, thanks for sharing the pics of John S.'s thruster! 

We all miss John S, he was quite a unique character and I for one
had many a fine correspondence with him over the years. One that
especially stands out in my mind was his work on magnetic brain
stimulation for the air force. He had some very funny/scary
stories about messing with this technology that he shared privately 
with me. I did not know he had Parkinson's, but I had noticed the
decline in his postings. I wish he had shared that fact with the
rest of us, but of course one of the great things about doing
science and sharing with a community of likeminded scientists is that
it can distract you from the trials and difficulties of life
and lift your spirits in contemplation of the eternal verities.

On to the antenna. I agree with John Steck that the structure looks
kind of floppy and with high current pulses there may be some
shifting and distortion of the conductors. I have noticed from
my work with high power pulse driven inductors that the most
stable geometry is a loop. In a loop, the forces are such that
the vector is always pointing from the center out, so failure
causes the loop to burst. If the loop is compressed ( limiting
condition being a straight line of conductor ) the forces
will tend to act to press the broad sides out to form
a circular loop. Another way to look at this is
that the magnetic forces are always acting in such a way
as to maximize inductance.

All that said, this is a big circuit, and with
~1000 amps those mechanical forces will likely be small.
Hopefully small enough that you don't have mechanical
knocking when the pulse hits.

As you point out, the prism shaped inner conductors are the
thing that most differentiates Johns circuit from the NASA
replication. The patent only mentions them in the section
on cryogenic conductors, yet the text indicates that these
would be important for any implementation. Not critical, but
clearly important, if the eddy currents do indeed help
cancel the back reacting forces. If this circuit did work,
then the null circuit would best be an identical copy without
those elements. Removing the elements is the easiest thing, but
I understand your reluctance to mess with something, especially
if you get it to work! We'll cross that bridge when we come to it.

It's also worth pointing out the size difference. Johns is
about twice the size of the NASA unit. While the frequencies
contemplated are low w/ respect to the size, 

After reading the patent text, I think that to achieve the
current pulses you would do best to follow the claims, which
suggest a decaying pulse like what you would achieve with a
charged capacitor and switch. As much as you hate SCR's, it's
probably your best bet. They are cheap, high current, and
for the circuit I have in mind, easy to trigger. My circuit
would be different from the ones presented in the patent,
and easier to work with. What I have in mind 
is a DC voltage source with a current limiting
resistor that charges your cap. The cap's hot side is tied
to the input of the antenna, and the output of the antenna
is tied to the hot side of the SCR. The cold side of the SCR is tied
to ground. The SCR trigger can now be safely driven with
a pulser referenced to ground. To make things very simple,
just keep the rep rate of the pulser to say 10X the time
it takes to charge the cap. You can use a ballasting load
resistor between the antenna output and the switch, if
you don't want a reverse voltage left on the cap, but SCR's
are really good about that and it shouldn't be necessary
if your DC supply is using a current limiting resistor and a
series diode to prevent possible back discharge.

If this is foggy, tell me and I'll post a circuit diagram.

Your description of your driver gave me a chuckle. Clearly
you are a braver man than I, or at least you have better
health insurance (grin). 

Did John mention anything about his driver? The ones described
in the patent are nice but perhaps a little more complicated
than what you might be comfortable with. I think you will find
my driver to be v/ simple and applicable to many other experiments
if this one doesn't work out. 

K.

-----Original Message-----
From: newcandle-bounces at ipdiscover.com
[mailto:newcandle-bounces at ipdiscover.com]On Behalf Of Kyle R. Mcallister
Sent: Monday, September 29, 2008 4:53 PM
To: New energy for the new world.
Subject: Re: [NewCandle] Schlicher 'drive'


All,

Here's the pictures of the antenna.

http://www.fdscience.org/t/schlicher1.htm

If you see something you want explained, just ask.

--Kyle

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