Gentlemen,
Those interested in the NACA submerged inlets could search the NACA reports
server.
In particular the following report could shed some light on the actual
working of this type of inlet. Especially about what it can do and what it
can't.
http://naca.larc.nasa.gov/reports/1951/naca-tn-2323/
Concerning the fuselage outlet I would consider a louvre opening in an area
of low pressure (high airflow speed). One should avoid air leaks
perpendicular to the airflow.
I would like to remind you folks that the tiniest gain on drag pays
dividends in cruise speed and climb rate.
FWIW,
Regards,
Gilles Thesee
Grenoble, France
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