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From: Bulent Aliev <atlasyts@bellsouth.net>
Subject: Re: [FlyRotary] Re: New NA exhaust finished
Date: Wed, 16 Aug 2006 09:28:51 -0400
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>


On Aug 16, 2006, at 3:25 AM, David Staten wrote:

> Bulent Aliev wrote:
>
>> My idea was to have a "stepped" release of the sound energy.  
>> First  will expand some in the oval section, than expand more in  
>> the  augmentor tube while mixing with cooler air being sucked by  
>> the  velocity of the exhaust gasses. After that being chopped by  
>> the prop  blades?
>> Buly
>>
>> -- 
>> Homepage:  http://www.flyrotary.com/
>> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
>>
> Looks good, buly... I'm not so hesitant now about strait pipe  
> exhaust now. We are unable to mate our turbo housing onto the  
> exhaust manifolds that we have without interfering with the Mistral  
> Intake.. and the Mistral is gonna stay AS IS.. so we have to work  
> around it.
>
> Chris.. if you are reading this.. any desire/opposition against two  
> straight pipes coming out and swept DOWN/BACK (through a cowl  
> cutout) so that they arent aiming at the prop disk? or try to  
> emulate what Buly has here.. which he emulated from John Slade..?
>
> Dave
>

My setup also works the augmentor which is needed during taxi and  
static on the ground. I'm convinced it helps. Also I would suggest  
using oval stainless pipe after the collector. Burns have them, even  
bends. That will help some with reducing the noise.
Buly