REFLECTOR: Cooling
Velocity Aircraft Owners and Builders list
reflector at tvbf.org
Tue Jun 17 23:18:45 CDT 2014
That is the way I had them before ...... Thanks ....... I guess I will
install them the same way again.
Ron
On 6/17/2014 7:26 PM, Velocity Aircraft Owners and Builders list wrote:
> If you can imagine which way the vortex is spinning, I believe you
> want to place it such that the vortex is captured by the side of the
> NACA.
>
> I.e., looking at it from the front, the VG to the left of the NACA
> centerline needs to angle to the left.
> http://wiki.velocityoba.com/images/9/90/VV_naca2.jpg
>
> On 06/16/2014 11:53 AM, Velocity Aircraft Owners and Builders list wrote:
>> Like you just got my plane painted. I had VG 8" in front of the nacas
>> when in primer and had no cooling
>> issues. Now that I have paint on it and have not reinstalled the VG's
>> yet the temps are a little higher about
>> 20 Degs. I will be installing the VGs back on to see if it returns to
>> my normal temps. MY question
>> is similar which is better for installation of VG's with them
>> pointing into the wind > or pointing the direction of the wind
>> < . Does it make a difference ?
>>
>> Ron
>> On 6/16/2014 11:03 AM, Velocity Aircraft Owners and Builders list wrote:
>>> Painted 444DX. I will post pictures when I get some good ones and
>>> also send
>>> them to VOBA. But smooth paint has changed the airflow around the
>>> fuselage
>>> and I now have cooling issues. I have the NACA scoops on the top
>>> and an IO
>>> 360 in an SEFG. Before I painted it, the surface was rough primer.
>>> I had
>>> mild cooling issues before and put some 1.5" scoops at the rear of NACA
>>> ducts and they seemed to have helped a little, but they were ugly
>>> (to me).
>>> So, with no duct extensions I am overheating on climb out and even
>>> cruise
>>> with the cg forward.
>>>
>>> Two questions: 1) I want to try vortex generators. I already have
>>> them on
>>> the wing and canard, so why not. I thumbed through the Reflector
>>> for the
>>> last two years and could not find where to place them. Any ideas?
>>> Also, is
>>> there an easy way to search Reflector other than month to month as I
>>> have
>>> been doing?
>>>
>>> 2) In talking to Alan Shaw (yes I did find him, thanks to those who
>>> helped
>>> on that) and he suggested adding tabs near the root of the prop (3
>>> blades,
>>> fixed pitch, Catto) to draw more air through. Anyone tried that or
>>> have and
>>> suggestions on size, angle, etc.)
>>>
>>> I have now flown over 25 Young Eagles. They always clamor for rides
>>> my Velo
>>> over the RVs. Cant imagine why.
>>>
>>> PS. I suspect many of you are interested in antique cars. So you may
>>> want to
>>> follow my progress in the Great Race as I navigate a 1932 Buick from
>>> Maine
>>> to Florida, June 21 -29. This will be my 5th participation in rally.
>>> Follow my progress on http://www.greatrace.com/ as I get lost in
>>> Vermont or
>>> Georgia. The results will be posted daily. I will be in car #61.
>>> If you
>>> look on the site you will see what cities we stop in. Note that
>>> lunch stops
>>> are very brief, little time to be social, but evening stops are a
>>> concurs
>>> event with much social time. If I am going to be in a city near
>>> you, love
>>> to meet you and show you the cars (there will be about 100 dating from
>>> 1910).
>>>
>>>
>>> David Ullman
>>> N444DX
>>> President EAA 292
>>> 541-760-2338
>>> david at davidullman.com
>>>
>>>
>>>
>>>
>>>
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>>
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>
> _______________________________________________
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>
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> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
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