REFLECTOR: The use of VG to aid cooling

[Lawrence Epstein via Reflector]

Great study.

Have you looked at the effect of varying the spacing between the VG's (I
didnt see that in your article). Kurt Winkler said that he saw dramatic
differences when he varied the spacing.

Larry

On Tue, Sep 30, 2014 at 12:56 PM, Ron N VelocityXLFG via Reflector <
reflector at tvbf.org> wrote:

> Great Job ! . But now I ask the question how is it so many builders claim
> the small vg's help when your info so clearly says it does not. I have
> small vg's  in front of my nacas
> and was sure they helped till now. :(   I have now put testing my naca
> intake back on the testing list. Oh well more fun things to experiment with
> :-) .
>
> Great article so loaded with great info.
>
>
> Ron
>
>
>
> On 9/30/2014 8:48 AM, Matt Bucko via Reflector wrote:
>
>> Well done David.
>> Matt
>>
>>
>> On 9/29/2014 5:09 PM, David Ullman via Reflector wrote:
>>
>>> My Velocity has always run hot.  I have fixed this with the use of
>>> Vortex Generators aiding the flow of air into the NACA ducts on top of the
>>> fuselage.  For a full report go to:
>>>
>>> https://davidullman.com/uploads/THE_USE_OF_VORTEX_
>>> GENERATORS_TO_ENHANCE_PUSHER_AIRCRAFT_COOLING.pdf
>>>
>>> Comments appreciated.
>>>
>>> To see recent photos of N444DX hangared in Independence Oregon, go to:
>>>
>>> https://davidullman.com/VelocityPhotos.php
>>>
>>> David Ullman
>>> David at davidullman.com
>>>
>>>
>>>
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>>
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>
> _______________________________________________
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