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Re: Density versus Boost

To: Jim Ferrara <jferrara@icdc.com>
Subject: Re: Density versus Boost
From: Steve Laifman <Laifman@flash.net>
Date: Sun, 17 Dec 2000 11:16:22 -0800
Jim,


Thanks for the work you have done on boost formulae, and the exacting
analyses.

I do not want to get into any discussion here on who is "more right" on
a simple statement about the order of magnitude of the boost issue. It's
simply too complex and inappropriate for this forum.

But------ if you carefully read my original message it says "Neglecting
thermal losses, of course."

This was meant as a statement of the gross theoretical potentials,
whereas your educational formulae makes a great use of the expression
"T2/T1", a compressor thermal rise due to adiabatic compression --
purposefully neglected in my statement for simplicity.  Then you add
more "thermal losses" to get to what Doug admittedly stated was an
"inches of mercury" misspoken statement, not a psi boost statement. You
use centrifugal compressor examples, and the Miata accessory units I
drove were roots type compressors, not centrifugal turbos (not that it
is germane, here).

Peace, and lets try to keep the list to Tigers.
--
Steve Laifman         < Find out what is most    >
B9472289              < important in your life     >
                         < and don't let it get away!>

http://www.TigersUnited.com/gallery/SteveLaifman.asp

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