Either in tank fixed baffles, or tank liners would seem to me to be the way
to solve slosh. For a vehicle that gets to orbit, tank liners would allow
for engine restart, in zero G, without the pressurant gas blowing straight
through the fuel/oxider in the tank.
Tony Fredericks "Mind that bus!"
Amateur Rocket Scientist "What Bus?"
E.R.P.S. Member SPLAT!! - Arnold Rimmer
From: Henry Spencer <[EMAIL PROTECTED]>
To: ERPS <[EMAIL PROTECTED]>
Subject: slosh (was Re: [ERPS] Armadillo May 2, 2004)
Date: Mon, 3 May 2004 19:08:25 -0400 (EDT)
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]
_______________________________________________
ERPS-list mailing list
[EMAIL PROTECTED]
http://lists.erps.org/mailman/listinfo/erps-list
_________________________________________________________________
Check out the coupons and bargains on MSN Offers! http://youroffers.msn.com
_______________________________________________
ERPS-list mailing list
[EMAIL PROTECTED]
http://lists.erps.org/mailman/listinfo/erps-list
