REFLECTOR: Performance Exhaust

Don Johnston numa at comcast.net
Tue May 14 07:53:32 CDT 2013


There's a sexual joke in there somewhere, but I can't seem to find it.

:-)

On Tue, May 14, 2013 at 7:48 AM, Scott Derrick <scott at tnstaafl.net> wrote:

> I've been told NACA's don't don't do much of anything in regards to
> sucking when installed backwards.
>
> they make a cool looking exit duct but thats all.
>
> Scott
>
>
> -------- Original Message --------
> Subject: REFLECTOR: Performance Exhaust
> From: Richard J. Gentil <richard at naples-air-center.com**>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Date: 05/13/2013 10:12 PM
>
>  Just a thought, since we use NACA'S for our cooling plenum what about a
>> NACA for the exhaust? I would think a NACA with a 1 to 1 width to depth
>> ratio of ramp for the exhaust would act as an augmenter running parallel to
>> the free stream flow to get the exhaust up to the slipstream speed.
>>
>> Richard
>>
>> Sent from my iPhone 5
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> --
> To those leaning on the sustaining infinite, to-day is big with blessings.
> Mary Baker Eddy
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