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

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: robert heidlebaugh <rheidlebaugh@xxxxxxxxxxxxxx>

Having worked at a tracking site at 10,000 ft mounted top of a calcite
mountain lightning was a common problem. The site was well bonded and
surounded with a 3/8 in counterpois like a  gient fish net eack time we were
hit the lightning rods would vaporize only the bottem 2 ft at the mounting
not the point that was hit. The 5/8 copper rods would have no dammage at the
nickel plated point only the base would be missing. All our line suporting
equipment was vacuum tube operated and survived. Our transistor equipment
was bonded to our building. Cables that connected our operations building to
other buildings would vaporize and pop the  raised floor pannel up off the
floor. We would drop new spare cables into the floor put out fires and
continue our mission, to repaire later. Each time we were hit nothing inside
was harmed. This happened 2-3 times a mounth and all was the same. I beleave
a plane being well bonded would only feel the power of lightning that was
developed across the path of the lightning and not the total current of the
bolt to the earth as the plane is an isolated devise suspended in space. The
larger the devise the more total capacitive current flow. A missile is a
different problem as it is connected to an ionized conductive vapor trail
like a long copper wire to the launch pad ready to feel the full current of
lightning.
        Robert   H
--


> From: "Tesla list" <tesla@xxxxxxxxxx>
> Date: Fri, 22 Apr 2005 08:01:37 -0600
> To: tesla@xxxxxxxxxx
> Subject: Using TCs as a test source, EMP, etc.  was Re: Wendover Coil Vs 
USAF
> lightning TesT? - Which aircraft ? ?    ?
> Resent-From: tesla@xxxxxxxxxx
> Resent-Date: Fri, 22 Apr 2005 08:06:49 -0600 (MDT)
>
> 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.
>>
>>
>>
>>
>
>