[time-nuts] A real-world precision timing need....

[Bob Camp]

Hi

The gotcha is that the gong can move / twist when hit.  The plate buried in front of the electronics has to just sit there and take it. More energy transfer to the anchored plate. 

I'm sure there are alloys that will get you under 1", the issue will be making sure you have the right one...

Bob


On Oct 31, 2010, at 4:44 PM, Mark J. Blair wrote:

> 
> On Oct 31, 2010, at 8:06 AM, Bob Camp wrote:
>> Adequate protection starts at about 1" of steel plate if it's angled to the incoming projectiles.  
> 
> Using hardened armor plate (as used for steel "gong" targets) can get that down under a half inch, resulting in a lot less mass to drag downrange and back. It won't hurt to locate the sensor behind a berm, either. The sky screen and/or its supports will still get shot eventually, but that will be a lot cheaper to replace than the sensor.
> 
> 
> 
> -- 
> Mark J. Blair, NF6X <nf6x at nf6x.net>
> Web page: http://www.nf6x.net/
> GnuPG public key available from my web page.
> 
> 
> 
> 
> 
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