REFLECTOR: NACA augmenter?

[Karl J. Warner]

Scott, thanks and pics would be great.  Do you use VG's too? I've had them on and off and feel they help most in climb.  Karl
> From: Scott Derrick <scott at tnstaafl.net>
> Date: July 9, 2011 9:04:33 PM EDT
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: NACA augmenter?
> Reply-To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> 
> 
> NACA augmenter..  A slightly raised scoop at the rear of the NACA.  Most of the scoop being on the outer corners.  A Cozy driver did some flow testing and found his upper NACA's were spilling out of the outer corners in a big way.  He added some corners and reduced the splillage and lowered his CHT temps.
> 
> I tried some flow testing with oil and found the same air spillage on both outside corners. So I made a bolt on scoop that captured the spilled air. Dropped the temps by 10-15 degrees.
> 
> The spillage problem was exacerbated by my using the upper NACA's in a regular sized fuselage.  Flow testing is warranted to verify if your NACA's are spilling or not.
> 
> I will get some pics.
> 
> Scott
> 
> -------- Original Message --------
> Subject: REFLECTOR: NACA augmenter?
> From: Karl J. Warner <karljwarnerpa at earthlink.net>
> To: reflector at tvbf.org
> Date: 07/09/2011 06:43 PM
> 
>> Scott,
>> Love to know more....  exhaust augmenter or NACA augmenter?
>> Karl
>> On Jul 9, 2011, at 6:42 PM, reflector-request at tvbf.org wrote:
>> 
>>> I then added augmenters to the NACA's per a Cozy blog and that really helped.
>>> 
>>> Scott
>> 
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