rijakits wrote:

>
>     Remember the inventors of the NACA-duct did recommend to NOT use
>     it as a pressure-recovery intake (what we need for our our car
>     style radiators)
>
I've heard this repeated so many times, and yet I've never been able to
find the report that said it.  I believe it is well on its way to
becoming an old-wives-tale.  I've looked for a while in vain to find the
exact quote this morning, but the closest I've been able to find was
more along the lines of "we didn't test that, so we don't recommend it."

"We don't recommend it, because we haven't tested it" is NOT the same
as, "we don't recommend it because we found it doesn't work."

All of the reports are online at naca.larc.nasa.gov.  That address
starts you at the search page.  'submerged inlet' brings up the reports
on NACA scoops, with the most germaine for our purposes being located
at  http://naca.larc.nasa.gov/reports/1951/naca-tn-2323/ .  I'll keep
looking for the quote I'm referring to above, but I would really
appreciate a pointer to the report that says, "We found submerged inlets
to be deficient for use with radiators."

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