Re: composite-arf question.....
Depending on the size of the holes (I use 1.5" behind the gear plate for cooling holes) you can create a low pressure area by cutting a piece of phenolic tubing at an angle, and gluing it to the belly with the large part forward, creating an air dam that will tend to suck air OUT of the fuselage instead of allowing it to get back inside.
You can see them on the belly of the plane, between the gear, in the enclosed picture.
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KrisW
"Mediocrity is doing it THEIR way"
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