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| ▲ | goku12 9 hours ago | parent [-] | | It isn't that simple, is it? Even if you place the black surface on a spacer (adding mass, might I add), the black surface itself is going to radiate heat back onto the satellite via blackbody radiation. This is always going to create a worse thermal situation unless you can somehow radiate away as much heat as you could with reflections. To see what I mean, check out JWST's thermal shield. | | |
| ▲ | WalterBright 6 hours ago | parent | next [-] | | Consider a shaped charge. It seems wild to me that you can direct an explosion with various shapes of the explosive. Perhaps a similar idea can apply to the blackbody radiation - get it to radiate mostly away from the satellite. Also, the black part will be pointed at the Earth, not the Sun. | |
| ▲ | qingcharles 7 hours ago | parent | prev [-] | | To complicate it further I thought that some of the military sats had rotating black panels to shield them from ground visibility? |
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