On Thu, 05 Sep 2002 10:52:57 -0400, Alex Fraser <[EMAIL PROTECTED]>
wrote:
>Is lb/in^2/min the same as psi/min?
>psi usually measures pressure. For flow wouldn't you use volume? Shouldn't
>these be gpm or cc/second?
>Other wise how can you avoid confusing presure with flow? It is difficult
Yes, welcome to rocket science circa 1960. Slugs and poundals were
not the only sins against man and nature before SI came long and saved
the world.
What we're measuring is flow rate per unit area of catalyst. So a
(non-metric) purist would insist on cfm/in^2 or some such. But the
application here is rocketry, so we care how much mass we flow, and
not so much how much volume...
To plagiarize the bumper sticker, "If you're not confused, you weren't
paying attention." Sounds like you were paying attention. :-)
-R
--
"Sutton is the beginning of wisdom -
but only the beginning."
-- Jeff Greason
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