--> Europa-List message posted by: "Area-51" <goldsteinindustrial@gmail.com>
This is proofing a hot topic!!
So, Pete you are correct, I checked the model again, there is a slot in the
bulkhead that allows air to flow through to the Hstab trim slots. The trim
servo arm operates through it. With or without a port in the cabin D panel
doesn't appear to make any difference, the air gets trapped in an internal
vortex. So some additional work required here to help it flow out. My initial
thoughts way back was to fit bristle brush wall to eliminate acoustic noise
from this feature.
Somebody just posted pics of curtis valve covers. Minimal air does flow from
here, and the volume is not high enough to adversely affect cabin flow.
I ran the model again in standard trim with the flap bar slots exposed. Air
does flow through here much better when the D panel port is implemented. 181
has a flat panel piece fitted at the bottom throw position of the slot that
helps to draw air out into the free stream. Elimination the flap bar slot has a
marked affect on cabin air ingress volume however the greatest affect so far
has been the top position aft of the doors.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=511368#511368
Attachments:
http://forums.matronics.com//files/16bfd664_bdaa_4d3e_8b23_072a1eb9b651_160.jpeg
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