---- Ed Anderson <eanderson@carolina.rr.com> wrote:
> Tony, based on that preliminary sketch - it appears you have the basics
> there.  The only thing I notice which at this point that I would change  is
> you appear to have the inlet flush against the bottom of the fuselage where
> it will easily ingest the aircraft skin boundary layer.  Most inlets so
> mounted are generally mounted an inch or so away from the fuselage to avoid
> this.
>
> In fact, given the apparently length of your inlet from your sketch , you
> should have little problem with the length of a full up Streamline duct -
> which according to K&W was the best they could find for subsonic flow.
>
> Ed
>
>
>
> It's hard to see in the pic but behind the RAD is the muffler. I really like the exhaust diffuser idea. From what I understand air will allways flow thru the RAD as long as the engine is running. Do have that correct?
and what is the length behind the muffler have to be ?
I want to use a muffler as opposed to a straight header.
I saw a Velocity at Oshkosh with a header in the diffuser and it was GOD awful LOUD so maybe a muffler in the diffuser may be a better way to go.

Tony