Re: Exhaust Augmenter (was Canard Root Faring)

Peter Harris <peterjfharris@...>


The Norton ejector is purpose built into the base of a Supertrapp megaphone.
It has a side entry and is used to scavenge cooling air through the rotors
and would not suit your application. There was an article in Kitplanes mag
years ago which covered the design of this kind of device and showed
dimension ratios for optimum performance. I will see if I can find it.



From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of
Joseph Snow
Sent: Thursday, 2 November 2006 3:14 PM
To: Q-LIST@...
Subject: Re: [Q-LIST]Exhaust Augmenter (was Canard Root Faring)


Thanks again for your perseverance. Do you have a picture or link to the

----- Original Message -----
From: Peter Harris
To: Q-LIST@yahoogroups. <> com
Sent: Wednesday, November 01, 2006 9:15 PM
Subject: RE: [Q-LIST] Canard Root Faring

Joseph a weld bead would do the job best if you can get a sharp edge facing
the exhaust stream. The Norton extractor was made with the end of the
tailpipe crushed and shaped like a rectangular cross. It would be possible
to enclose the whole thing inside the lower cowl?



From: Q-LIST@yahoogroups. <> com
[mailto:Q-LIST@yahoogroups. <> com] On Behalf
Joseph Snow
Sent: Thursday, 2 November 2006 10:19 AM
To: Q-LIST@yahoogroups. <> com
Subject: Re: [Q-LIST] Canard Root Faring

Except for the 1/16" venturi ring, your description of the augmenter setup
sounds like my current setup. The 1/16" ring generates the turbulence? If it
worked, I would be happy to keep it as is. However, I do think the parts
outside of my cowl will be draggy. How do you get the 1/16" ring?...perhaps
lay a weld bead on the inside end of the pipe?


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