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Paint Type for ESA

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Sep 28th, 2012 at 3:23pm  
Dear All,
I want to refurbish a 9.0m Antenna. what type/kind of paint should I buy to spray the reflector, sub reflector, etc

Regards
Green
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Reply #1 - Sep 28th, 2012 at 6:28pm  
Depends what's available in your area. Only real requirement is that it's non-magnetic and/or non-ionizing. Given that those properties usually belong to the tints, it means you're pretty much stuck with various shades of white or gray.

//greg//
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Reply #2 - Sep 30th, 2012 at 3:08pm  
http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/15700/1/00-1416.pdf

Test the paint in a microwave cooker.   Put a cup of water as a load.  Also put something that will stay cold in the microwave e.g ptfe sheet or some types poly sheet.  Test and make certain the sheet stays cold.   Paint the sheet and allow to dry.  Repeat the test. If the paint heats, browns or burns then the paint is no good.

Best regards, Eric
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« Last Edit: Oct 3rd, 2012 at 10:58am by Admin1 »  
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Reply #3 - Oct 3rd, 2012 at 6:46am  
Thanks.

Regards
Green
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Reply #4 - Apr 29th, 2013 at 8:52am  

What are the concerns with reflecting light and heat at the equinoxes?

Flat white OK?  Gloss? Would the plumbing catch most of the heat before it reaches the electronics?

Tks

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Reply #5 - Apr 29th, 2013 at 12:57pm  
Flat is preferred, almost without exception. But even paint formulated specifically for satellite reflectors cannot eliminate the temporary frequency interference during an earth/satellite/sun equinox.

Interference during a solar equinox event occurs when the satellite comes directly in line between an earth station and the sun. Signal disruption is due to the sun's radiation overwhelming the satellite signal. Sunlight does indeed represent a broad spectrum of frequencies, hence the interference. But the duration of an equinox event is not typically long enough to make heat technically relevant.

So I'm wondering if you were actually intending to use a word other than "equinoxes".

//greg//
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