Artificial Satellites

What are satellites made of?

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2006-10-15 11:40:14

If you mean man-made satellites ... Traditionally the main

structure has been made of aluminum, although many now are some

sort of composite. Usually it's some sort of graphite

fiber-polycyanate face sheet over aluminum honeycomb, though it

varies a lot by manufacturer and application. Polycyanate is

preferred to epoxies for the matrix because it doesn't shrink as

much when it loses moisture. There's a lot of other stuff in there.

Propellant tanks are usually titanium, while other propellant

components like lines and engines are typically steel. Housings for

electronics are usually aluminum.

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