Hypothesis:
We've established that the cockpit is of lower pressure than the rest of the
interior fuselage. That air rushes in from the lever slots, torque tube hole
and NACA vents. As air is entering the cockpit, it must have an exit point, or
it would be static pressure and nothing would come out of the vents, lever
slots, etc.
With the outside air passing over the top of the fuselage, this would create a
lower pressure area. The gas struts push the doors outward, as does the
airstream passing around them. Does air enter from the door seals? If not,
might the doors be the the likely exit point?
Rain would not come in, becuase of the labrynth ledge/seal and the outgoing air.
So - is there really a need for further low pressure exit for cabin air?
Cleve Lee
A198 Mono XS Jabiru 3300
>
> My flap slots are sealed too (TD gear).
> Air rushes in through the NACA cockpit vents and the TP push rod/aileron
> torque
> tube (below the seat).
> I'd be interested in any theories about how all this air gets out again.
> The tunnel seems obvious,but this is connected to the same area that's feeding
> the aileron push rods!
>
> Duncan McF.
>
> On Monday, August 12, 2002 9:04 AM, Miles McCallum [SMTP:milesm@avnet.co.uk]
> wrote:
> My solution (as yet untested) is:
> NASA duct in the cowling (side/front) feeding a SS cut-off in the
firewall.
> this feeds 2 ex-citroen air sytem valve/directors, one centre of the
pilot's
> sub panel, one in a housing under the shelf. The unknown (and yet to be
> solved is the outlets - don't want any protuberances on the fuselage, but
> I'm hoping a low(er) pressure area can be found near the tail to drag air
> through and out - there are no opening in the fwd fuselage at all: gear is
> TD, flaps slots are sealed.
>
> M
>
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