Hi! Brian.
As you may be aware G-PTAG has a Naca vent on the port
side of the bottom cowl for engine intake air. It was also of a size
adequate to split air to a dedicated supply to oil cooler. Since I didn't
need the bleed off to oil cooler I have routed through the P1 Footwell
through a butterfly control box. It provides one hell of a blast of cold air
to the P1 position and being on the side of the cowl it doesn't get standing
rain water in it . I don't think you could expect to get air into the
cockpit from your suggested position since you would have a "venturi" effect
sucking air out of the cockpit.
much better to get a ram air effect from a forward position.
regards
Bob H G-PTAG
-----Original Message-----
Behalf Of Brian Hutchinson
Subject: Date: Sat, 3 Feb 2001 20:35:17 -0000
Hi all,
I've spent nearly 2500 hours on my XS so far, but this computer
wizardry is all new to me, so if it all goes pearshaped please accept my
apologies.
I have been considering the need for extra cooling in the cockpit and to
me, the obvious place is a small NACA duct in the fuselage top, just behind
the front door hinges feeding a couple of the airliner type eyeball vents.
Rainwater could be tubed into the door jamb inboard of the seal. Then Carl
Reynaud suggested that the region above this part of the fuselage might be a
low pressure zone and the air might, in fact, move out of the cockpit rather
than blast in! Has anyone tried this idea... You could save me a few more
hundred hours if it's a bad plot.
Brian Hutchinson
XS 357
Sleaford England
|