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https://www.satsig.net/cgi-bin/yabb/YaBB.pl Anything else >> General and other topics >> Paint Type for ESA https://www.satsig.net/cgi-bin/yabb/YaBB.pl?num=1348842182 Message started by AOGreen on Sep 28^th, 2012 at 3:23pm

Title: Paint Type for ESA
Post by AOGreen on Sep 28^th, 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

Title: Re: Paint Type for ESA
Post by USN - Retired on Sep 28^th, 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//

Title: Re: Paint Type for ESA
Post by Forum Admin on Sep 30^th, 2012 at 3:08pm

https://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

Title: Re: Paint Type for ESA
Post by AOGreen on Oct 3^rd, 2012 at 6:46am

Thanks.

Regards
Green

Title: Re: Paint Type for ESA
Post by chriswlan on Apr 29^th, 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

Title: Re: Paint Type for ESA
Post by USN - Retired on Apr 29^th, 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//