MTM chip

Charles Baer charlie at
Thu Oct 24 17:07:10 EDT 2002

> How can you increase cfm in a non-variable volume without increasing
> pressure/boost?  I can see how a non-turbulent, laminar flow
> would increase
> intake temperatures at a slower rate than a thresshing
> turbine/non-laminar
> flow, and hence the lower intake temperature, but I don't
> understand how
> less boost can give more CFM given the volumetric constraints.

Linus mistated the last term, he should have said air mass instead of
CFM.  Lower temperature means more air mass, i.e. molecules for
at a fixed CFM (volume doesn't measure Os w/o any density data).
Nitrous is just lots of dense oxygen at lower pressure than a turbo.


> As a typical DP aside, also notided when I was at the Smithsonian that
> "pumps" used on rockets look an awful lot like turbos.  "What
> is the deal
> with that?"

Didja notice they call them "turbo pumps" ;-), we aren't the only nuts
like that shape.
BTW: I'm bumming about the lowered budgets, I was hoping to see
showing up on the new toys by now.


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