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- Subject: Sail numbers
- From: T.L.G.vanderLinden@student.utwente.nl (Timothy van der Linden)
- Date: Tue, 12 Mar 1996 15:11:47 +0100
>1) the sail is the heaviest part of the ship. Even at 50 g/m^2, and 100
>Km in radius, the sail alone approaches my original MARS design (now a
>smoking ruin ;( )
Hmmm, this is indeed fascinating (as mr. Spock says). I guess, I never
really thought of it before. (Although 5E5 kg for the ship seems a little
bit too small.)
>3) Stress is miniscule I don't where you guys have been getitng your
>stress numbers, but they are out of whack.
I'm not sure how I did it either.
>5) Thermal load is a big problem. 750 KW on .05 Kg is a big worry.
>I have not calculated the limiting temperature yet, but I am hopeful that
>titanium alloy will stand up to the load. To do this model, I will use
>heat capacity and blackbody radiation equation. I do not have time right
>now, but expect it soon.
Hmmm, this sounds troublesome, maybe we need to decrease the density of the
If you've calculated it could you add some formulas so that I can check it?