On Mon, 3 May 2004, John Carmack wrote: > If we find slosh to be an issue, our easiest correction will be to float a > bunch of stainless steel balls in the tank, which is effectively what they > did on Vanguard.
Mmm, I'm not sure that will be very effective. (I assume by "balls" you mean "floats".) For cylindrical tanks, the main slosh mode is the surface going up on one side and down on the other, with actual liquid motion mostly somewhat below the surface. I don't think floats are going to damp this very well.
Vanguard was too skinny to have much of a slosh problem anyway -- it's almost entirely a function of diameter. (Redstone at 178cm -- half again the diameter of Vanguard -- had no slosh problem, while Jupiter at 267cm had a serious one.) Floats are more often used to try to isolate the propellant from the pressurant gas.
Henry Spencer [EMAIL PROTECTED]
We are only 140 cm in diameter, so it may not be an issue at all...
John Carmack
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