Today's Message Index:
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1. 06:32 AM - cockpit ventilation (Frazier, Vincent A)
2. 07:11 AM - Re: cockpit ventilation (N395V)
3. 02:29 PM - Re: Re: NACA cockpit cooling vents (James Baldwin)
4. 07:11 PM - Re: Re: NACA cockpit cooling vents (Tom Martin)
Message 1
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| Subject: | cockpit ventilation |
--> Rocket-List message posted by: "Frazier, Vincent A" <VFrazier@usi.edu>
Milt,
No, I haven't tried it with the louvers open. I installed the louvers
last fall and then the wx turned cool. I will try it again when the wx
warms up a bit.
Here's a link to my louver installation for those who are interested.
http://vincesrocket.com/Additions%20after%2010-27-04.htm about 1/4 of
the way down.
I installed a simple track so that I could install covers for winter
ops. They will slide easily in or out through the airbox hole. Of
course, you gotta remove the airbox first. I don't have a photo of these
on the webpage yet as I added those in January.
Vince
************************************************************************
*****************
SNIP Vince,
I have 1 Naca scoop under the left wing for the rear seat and one on the
right side of the Fuselage in the same exact location as yours for the
front. I have no discernible difference in air temps from either (based
on feel).
Have you opened up your louvers and tried it?
My best guess is it is (as you also suspect) it may be air spilling out
of the inlets.
After adding louvers my CHTs dropped on average 15 degrees and,
subjectively, I think I picked up a little speed.
Never paid any attention to air temp from the vents before I put the
louvers in.
--------
Milt
N395V
F1 Rocket SNIP
Message 2
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| Subject: | Re: cockpit ventilation |
--> Rocket-List message posted by: "N395V" <N395V@direcway.com>
Next plane I build I'm gonna use your website as a guide. :)
--------
Milt
N395V
F1 Rocket
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=14621#14621
Message 3
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| Subject: | Re: NACA cockpit cooling vents |
--> Rocket-List message posted by: James Baldwin <jamesbaldwin@dc.rr.com>
Not sure I actually believe the temps on Vince's machine are REALLY
different without an actual measurement, but also not sure what either
of you mean by "air spilling out of the inlets." Surely you don't mean
the pressure side of the cowl inlets where it has been noted that vented
air tapped from the rear baffle provides a cool source. Please
enlighten me as I have no machine to go fly yet. Skin surfaces exposed
to sunlight might add energy in comparison to a source underneath the
airplane. I doubt any energy difference at these speeds due to
compressibility in a low pressure inlet, a.k.a. a NACA duct. I sure
would like to know the numerical values of the air temp coming out of
the two sources. I don't want to cut holes in the wrong place. JBB
N395V wrote:
>--> Rocket-List message posted by: "N395V" <N395V@direcway.com>
>
>Vince,
>
>I have 1 Naca scoop under the left wing for the rear seat and one on the right
side of the Fuselage in the same exact location as yours for the front. I have
no discernible difference in air temps from either (based on feel).
>
>Have you opened up your louvers and tried it?
>
>
>My best guess is it is (as you also suspect) it may be air spilling out of the
inlets.
>
>After adding louvers my CHTs dropped on average 15 degrees and, subjectively,
I think I picked up a little speed.
>
>Never paid any attention to air temp from the vents before I put the louvers in.
>
>--------
>Milt
>N395V
>F1 Rocket
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=14325#14325
>
>
>
>
>
>
>
>
>
Message 4
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| Subject: | Re: NACA cockpit cooling vents |
--> Rocket-List message posted by: "Tom Martin" <fairlea@amtelecom.net>
This air inlet provides gobs of fresh cool air.
Tom Martin
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