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From: "George Lendich" <lendich@aanet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-3757934@logan.com>
Subject: Re: [FlyRotary] Intake velocity stack lengths
Date: Wed, 15 Jul 2009 13:53:28 +1000
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 Ben,
A tapered inlet would vary the tuned length of the tube, but to what extent 
I'm unsure. Apart from that no problems. The length is from the end of the 
velocity stack to the inside of the housing.
George ( down under)
>
> Fellows,
>
>  I have been thinking up this crazy idea of trying to make intake runner 
> tubes out of carbon fiber. My question is regarding length of the velocity 
> stack. Does the length make a difference? Could a velocity stack be more 
> or less the entire length of the tube? Meaning, if I have a 12" intake 
> tube, could the entire length of the tube be a gradual taper to the 
> diameter of the block opening? Would that mess with the speed the air is 
> traveling in the tube? Aerodynamics is not something I have a very good 
> handle on, and am hoping someone out there in Fly Rotary land can shed 
> some light.
>
> Toughts???
>
> BTW,  Any reasons why carbon fiber should not be used for intake tubes? 
> May make the velocity tubes a mute point.
>
> Thanks for any thoughts.
>
> Ben Schneider
>
> P.S. Any Fly Rotary fellows going to OSH??? Perhaps a lunch one day or 
> something.
>
>
>
>
> --
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