Orbiter-Forum Making a launcher
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 11-05-2007, 11:38 PM #1 Bj Donator Making a launcher Ok, since the other forms down Ill post it here I know how to find Dv, and how to find how much fuel I need, but heres the next question, how do I find the least amount of surface area, for the maximized volume of the ship, AND to get the least amount of drag with the rocket, (we cann't launch a cube, now, can we ) Last, of the material composure in the Saturn V launchers, what is the shell composed of, and how much does that weigh for square footage.
 11-06-2007, 05:11 AM #2 tl8 Addon Developer Pick a shape that you like, and then optimize it
 11-06-2007, 05:25 AM #3 Bj Donator Quote: Originally Posted by tl8  Pick a shape that you like, and then optimize it It doesn't matter what I like or dont like(well actually it does, but thats beside the point), I still should know the weight and the amount of fuel it can hold, while getting max area, I think around the lines of something like this SA = (2(3.14)*R^2) + (3.14)*Diameter*hight) A = (3.14)R^2 It looks like a calculus problem to me, because it has 3 variables the question I guess, is how to get this into a f(SA)=A form
 11-06-2007, 05:27 AM #4 tl8 Addon Developer Sphere has the most volume for least sa, so It doesn't really matter what shape it is unless you want a basketball
 11-06-2007, 06:32 AM #5 Bj Donator Quote: Originally Posted by tl8  Sphere has the most volume for least sa, so It doesn't really matter what shape it is unless you want a basketball except most launchers arenot a sphere, they are a cylindrical shape Last edited by Bj; 11-06-2007 at 07:26 AM.

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