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Using TCs as a test source, EMP, etc. was Re: Wendover Coil Vs USAF lightning TesT? - Which aircraft ? ? ?

Original poster: "Jim Lux" <jimlux@xxxxxxxxxxxxx>

This is getting horribly off TC topics...

The WW-II and later B29 airdrop shots  (i.e. low altitude bursts) don't
generate much EMP. I think it's because the air is too dense, and the gamma
particles are absorbed too quickly in a sphere around the burst.  EMP is
really a concern for high altitude bursts (>50km up), where the gamma
particles all travel some distance before encountering the denser atmosphere
lower down before interacting and ionizing the air. In a test in 1962,
Starfish Prime (1.4 MT, Johnston Atoll launch) detonated at 400km, EMP
pulses were generated that disrupted electronics in Hawaii, many hundreds of
miles away.  There were also "interesting" ionospheric effects.

In any case, a TC is not a particularly realistic test source for EMP testing, nor is it a good source for all sorts of other electromagnetic compatibility testing. It does make an impressive demonstration. There's a story about an early industrial controller company (MODCOMP?) which used a TC as an improvised test source for ESD/EMC testing. As we all know from fooling with these things, TCs are hardly a repeatable calibrated source of pulses. (except for the latest SSTC designs)

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Friday, April 22, 2005 1:42 AM
Subject: Re: Wendover Coil Vs USAF lightning TesT? - Which aircraft ? ? ?

> Original poster: "Gerald Reynolds" <gerryreynolds@xxxxxxxxxxxxx> > > Well..... The B29 survived the EMP in Japan. Seems like a good faraday > shield will work just find (if no leaks). > > > >Original poster: "James" <mustang3@xxxxxxx> > > > >The only weapons systems that were especially hardened against EMP were > >the Patriot missile and the B1. All the rest were "on their own". Think > >about flying a "fly by wire" jet (F16) and the EMP hits it. Well, at least > >the ejection seat will still function. lol The Marx is very good for EMP > >testing, because the pulse has a fast rise and slow decay time. Basically

> >the EMP is a lightning bolt.
> >    Several ppl have mentioned their Marx experiences; like blowing up
> > test equipment, or being shocked across the room.