hello mayfield,(racers),i pretty much agree with your interpretation , and
along with yours would come the logical deduction (no pun intended) that
ANY penetration consists of three elements, an intake, a ducting section,
and a vent, weather it is a home air conditioning unit like your example,
or the other extreme such as a hole in a piece of aluminum foil, in which
the "intake" would be one face of the foil, the "duct" would be about .008"
long (the thickness of the material), and the "vent" would be the other
face of the foil which the medium (air in our case) flowed towards.
therefore, a commercial naca duct placed in a body panel would also consist
of these three elements, which leads us to the original question - is a
naca duct in a hood or fender considered a duct or a vent (or both !) ?????
regards,
doug ferguson
black radon engineering
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