Don=92t bother with a NACA duct it won=92t work. That area of the
aircraft
is in a low pressure area. Others have tried and failed. What does work
is an outward opening flap. When wide open is provides ample cooling
---From prop wash. When airborne only about =BC - =BD inch opening is
required.
This creates negligible drag and sufficient flow. It is important to
reinforce the area of cut-out as this part of the aircraft is strength
critical. I wrote up a modification for this which has been used on at
least two Europas.
Nigel Charles
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Fred Klein
Sent: 27 June 2009 20:39
Subject: Re: Europa-List: NACA duct and overhear vents
On Jun 27, 2009, at 10:17 AM, Rick Stockton wrote:
I'm trying to figure out the best place to place my rear NACA duct for
the overhead ventation system. N55XL has it behind the rear bulkhead
and the duct system requires a lot of work in getting to it. I'd like
to see if somebody has a simple solation.
Rick...John Wigney has a simple and straightforward solution...
John? How 'bout some pixs?
Fred
A194
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