Re: jet powered coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Christopher Boden by way of Terry Fritz <twftesla-at-qwest-dot-net>" <chrisboden-at-hotmail-dot-com>

A couple comments here....

1. Of the fourn full-scare turbine generators I've climed on, in and around 
in the past week, they were all rated for ~3,600 RPM. These are actual 
steam-driven turbines with a direct shaft (no gears, but the shaft's about 
4" thick) made by GE from '39 to '54. They are about 10' in dia (housing 
size), and about 30' long, weighing hundreds of tons (If you like I can 
photograph the makerplates for detailed info). I have four of them, if you 
would like one, they're for sale, complete with exciters, controls, piping, 
and if you're terribly motivated, the boilers, condensers and a few miles of 
pipe. The turbine, and the generator plates both plainly state about 
3600RPM. I personally can't imagine spinning something so massive to 
50kRPM...though I'd LOVE to see it done, provided I was sitting off-axis of 
course :)

2. In another Group related project (Jet Powered Street Luge) we have looked 
both at PulseJets (The Alpha prototype), and a Gas-Turbine (Beta Class). The 
Turbine spools up to *well* over 100kRPM, these are reasily availible, fully 
built engines that anyone with $15k to blow can own. They're also small 
enough to fit in a 6" pipe, some are much smaller.

While I'm the master of weird ideas, and I'm all about Jet Engines and High 
Voltage, building a jet-powered coil is well beyond my abilities, but I 
applaud you for trying it :) and I wish you the best of luck in your 
endevour!

Now, if you'd like a generator that will power your MULTI MEGAWATT coil, 
just let me know, show up here with a flatbed railcar and a fat check and 
I'd be happy to load you up. I've got four, and I only need one. Just think, 
you'd never have to pay a power bill again! :)




>Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
><davep-at-quik-dot-com>
>
> > Here is how it would work:
>
> > Gas turbo jet runs normally, the exhaust is used to spin
>
> > another shaft with an Impeller at one end and the alternator
>
> > at the other. Because it is not
>
>	Tricky to get the efficiency up.  It can be done.
>
> > physically connected to the drive turbo I could slow it at
>
> > will.
>
>	THAT will cost efficiency, LOTS of efficiency,
>	unless slowing is done with gears, or VERY carefully
>	designed rotor.  And getting gears to live at
>	50,000 RPM is tricky.  I believe that where
>	Gas turbines are used for Shaft output (RR, Power
>	Plants, choppers (??) they run them slower.  a LOT
>	slower.
>
> > This would make the HZ adjustable. I will have to create my
>
> > own alternator to deal with the high rpm. I don't see the
>
> > alternator spinning at more than 50,000 rpm
>
>	Normal engineering practice limits such 3600 RPM and
>	down.  Stresses in materials go up as square of speed.
>
>
> > because it will not be attached to the main drive turbo.
> > I was talking to Bert over on tesla-2 and he has a few novel ideas.
> > http://tesla-2-dot-org/pipermail/tesla-2/2002-September/date.html
>
> > At this point I'm concerned with the voltage.
>
>	Voltage can always be adjusted with a transformer.
>
> > At the very least I would like to run a Jacobs ladder.
>
>	3,000vac and up.
>
> > I now know one could not run a conventional transformer on
>
> > such high HZ.  One needs a ferrite core.
> > Can the alternator be wound to produce high voltage directly?
>
>	It CAN.  But.  It also needs to be INSULATED for the
>	HV.  (I believe commercial, power station alternators
>	are routinely wound for 5,000VAC and thereabouts.)
>
>	best
>	dwp
>
>...the net of a million lies...
>	Vernor Vinge
>There are Many Web Sites which Say Many Things.
>	-me





Christopher "Duck" Boden Geek#1
President / C.E.O. / Alpha Geek
The Geek Group
www.thegeekgroup-dot-org
Because the Geek shall inherit the Earth!

"He had that rare weird electricity about him--that
extremely wild and heavy presence that you only see in
a person who has abandoned all hope of ever behaving
normally." --Hunter S. Thompson