Svein,
Air leaves the cockpit area trough the undercarriage lever arm sleeve and
perhaps other holes. I can put a botlang leaf on this place and it will not
move.
Karel Vranken #447 F-PKRL
----- Original Message -----
From: "Sidsel & Svein Johnsen" <sidsel.svein@oslo.online.no>
Sent: Thursday, September 11, 2008 11:30 PM
Subject: Re: Europa-List: Cabin vent - air outlet?
> <sidsel.svein@oslo.online.no>
>
> Karel,
>
> No, I have not measured the pressure, I relied on what EA2004 said also
> about the pressure in this area. I think they were correct, because the
> air speed over the top is higher than the airplane's speed through the
> ambient air and hence the pressure is lower than the ambient pressure
> (compare the fuselage profile to a wing profile - higher speed hence lower
> pressure on top of the wing).
>
> All I can say for sure is that the pressure at my vent outlet is lower
> than in the cockpit, because air goes out through that vent (I can feel
> the air flow by holding my hand under the outlet opening). The air
> pressure in the cockpit may be higher than ambient, though, because of the
> efficient NACA intakes on both sides (built as per Europa standard). If
> air comes in through your vent, it must mean that your cocpit pressure is
> lower than at your top vent opening. Where does this air leave your
> cockpit?
>
> Svein
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