From: nospam@buzz.off
On Thu, 21 Aug 2025 15:33:24 -0700, the following appeared
in talk.origins, posted by Rufus Ruffian :
>E.Laureti wrote:
>
>> Vincent Maycock posted:
>
>> > >>>>Briefly, how are you changing the field self-interaction to increase
>> > >>>>the thrust of your PNN vehicle? Or are there other methods that you're
>> > >>>>using to accomplish that crucial goal?
>> > >>>
>> > >>>Yes, methods:
>> > >>>
>> > >>>1) Lower the impedance of the dipole
>> > >>>
>> > >>>2) Increase the current
>> > >>
>> > >>And are those things difficult to accomplish?
>> > >
>> > >To lower the impedance of a dipole fed at high frequency is not so
>> > >simple, one would have to at least use silver wires, at least.
>
>Firstly, you have to match the impedance of your "dipole" load to the RF
>source and to the transmission line.
>
>There are ways to lower the impedance of the radiating element, such as
>increasing the diameter (which lowers the Q as well). Copper tubing is
>great. For impedance matching, a transformer will work. You also need a
>balun, as explained before, and there are simple, slick ways to realize
>a balun and impedance-matching transformer all in one, using
>transmission line or antenna stubs.
>
>However. Simply more current isn't going to solve your problem. The
>velocity of charge carriers is just as important. You can have high
>current drifting lazily along the element, and it won't give you vXB
>force. You need to know the bulk drift rate of the electrons. You also
>need to know the current distribution along the dipole.
>
>Silver wire isn't an answer. Element RF impedance is determined by the
>geometry of the element. Metal conductivity has less to do with it.
>Plus, "wire" (presumably thin) is going to give you high impedance and
>high Q. Also, google "skin effect".
>
>What you are building is basically an antenna. Antennas are not known
>for producing force, if you hadn't noticed.
>
>Then there's the unbalanced coax feed blooper, which you don't seem to
>realize.
>
>Any vXB force is applied between the dipole and the magnets, not
>externally, and that's your foremost miscalculation.
>
>Your RF half-cycles are still canceling out all your alleged force.
>
>I can't see why you are even using RF. Can you explain that? A DC loop
>in 'n out the B field would work just as well, being infinitely simpler.
>
>A TV picture tube has an electron beam, guided by vXB force using the
>magnets in the yoke. Shouldn't that produce thrust? Perhaps you could
>just use a TV picture tube for your space propulsion system? As a side
>benefit, it would entertain the astronauts all the way to Mars.
>
>I realize you can't answer any of these points, but your retorts are
>endearing.
>
>
>> > And you're saying those cost too much to try to use?
>> >
>> > >Second, and more important, to increase the current, all the circuitry
>> > >must *support* high currents at high frequency, and some electronic
>> > >components just melt under such stress.
>> >
>> > Which ones are melting down,
>
>The "designer".
>
>> > and why can't you replace them
>
>Because... :
>
>> $$$$$$ and to pay several engineers...
>
>You're building a device that will revolutionize space travel, and no
>one involved can do any engineering, let alone the physics? So you have
>to solicit investors and free advice on Usenet?
>
I suspect that "solicit investors" is the key.
>
>Lord have mercy.
>
Indeed.
>
--
Bob C.
"The most exciting phrase to hear in science,
the one that heralds new discoveries, is not
'Eureka!' but 'That's funny...'"
- Isaac Asimov
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* Origin: you cannot sedate... all the things you hate (1:229/2)
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