REFLECTOR: Re: Cabin Heating
Ron Brown
romott at adelphia.net
Wed Feb 22 09:16:40 CST 2006
I still think it would be OK to make some NACA scoop inserts to use for cold
weather (less than 20-25 degrees which is when the Vernatherm seems to stop
sending hot oil to the cooler). These would just slip into the NACA and
reduce the opening by say 1/4 to 1/3. They could be held in place with a
couple of screws in the front, the back being held in place by the NACA
opening.
Another approach is to use variable floor ramps in the NACA. Vlad had built
some for his Velocity a while back, but he still isn't flying. Basically,
the bottom of the NACA opening was hinged at the front with a mechanism to
raise the rear portion upward to reduce the airflow. As with any cowl
flaps, you would need to monitor engine temps. With modern (like GRT EIS or
other engine monitors) a high CHT alarm could alert to open the NACA ramp.
With the removable insert, just watch temps on the climb out and lower the
nose when the CHT's get too high.
The variable bottom on the NACA should be pretty easy to implement for those
of you who live in the frigid north and are still building.
Ronnie Brown
Cornelius, NC - in the not-so-frigid Southeast.
----- Original Message -----
From: "Dr. Golf" <drgolf369 at yahoo.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Wednesday, February 22, 2006 9:21 AM
Subject: Re: REFLECTOR: Re: Cabin Heat 12 volt
>I have been working on keeping the draft out. The boys
> at velocity helped install a rubber seal around the
> nose gear where it exits the cabin. I installed
> inflatable (electric pump)door seals and they work
> perfectly (quiet also). I have recently covered the
> opening in the keel around the canard control rod with
> 1" insulating foam rubber (not too tight). I placed
> the same foam on the back of the rear cabin panel (
> not the firewall) and snugged it tight where it
> contacts the cabin walls, top and floor. I placed a
> vinyl cover over the back of the instruments drapping
> it forward to the front of the canard.I created a
> silicon seal around the canard cover.
>
> When the engine pumps the oil to the oil cooler in the
> nose, I am as warm as a bug in a rug, but because of
> the oversized scoops, this is tough to do in the cold
> weather without exceeding 200 knts.
>
> My next project is to create a seal between the nose
> gear doors.
>
> Your description of the blanket sounds great!
>
> Any other suggestions?
>
> Perhaps if we kidnap Dwayne and the Scotts and make
> them fly with us in the freezing north, I bet within 2
> weeks, there will be mods avaiable to practically
> pressurize the cabin! What do you think?
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
> _______________________________________________
> To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery! www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
More information about the Reflector
mailing list