I would like to point out that we are aiming for a specific mass onI keep forgetting that POGO is a small jobby. With propellant tanks that size, a few quite
POGO. Not so much that the vehicle requires it, but to get us (ERPS)
thinking about mass budgets and develop good habits and processes for
when our vehicles require mass constraints. BTW mass is targeted for
20kg dry and 27kg of propellant.
thin pieces of polethylene should do the trick. I'm sure you could find some place to order
some from. I'd be careful about how you cut it though. I imagine that a lot of the crud that
the saw would leave in the polyethelyene would likely do some "interesting" things with
peroxide. But that can be handled in a number of ways. With PE, you likely won't screw
up your mass budget too much--the stuff is ridiculously low density. But if you can show
you don't need them, it would save you some hassle. I don't imagine it would likely be a
problem on such a small and squat rocket. Sloshing is more of an issue on bigger and
longer rockets.
I'll look it up again. I remember which shelf in the library it's on--I could probably find the bookOr you could just do that. It should work fine. If you want though, there's a book in the local library on rocket propellant tanking. IIRC it has a chapter on calculating slosh effects, etc. IfThat would be great. Giving us a title and author would be a good thing
you would like, I could probably sink a half hour or so into mining some equations from it for you (or I could send you some photocopies, or something).
as well.
blindfolded, but I can't remember the title or author off the top of my head. Go figure.
~Jon
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