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From: "David Carter" <dcarter@datarecall.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-3227718@logan.com>
Subject: Re: [FlyRotary] Rusty's 3rd intake - PP variable intake
Date: Tue, 11 May 2004 22:06:14 -0500
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Ken,

"Two diff length runners (1 fixed length for cruise, & 1 fixed length for
race), manually selectable/switched" - I never realized you were working on
that.  Sounds like a great solution (cheap, simple, and not compromised to
just 1 length).  Will you make one for me, too? (grins)

David
Nederland

----- Original Message ----- 
From: <kenpowell@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, May 11, 2004 9:19 PM
Subject: [FlyRotary] Rusty's 3rd intake - PP variable intake


<snip>
 My thought on the solution to this is a little different from Ed's
infinitely variable length but simpler to build - since a PP engine only
needs 2 runners (1 per rotor) the idea is to have a short runner (16") for
high rpm and a long runner (24") for cruise; a butterfly valve will be used
to switch between the two.  I hope that this setup wi
>  ll not need to be automated - set the butterfly to 'long' for takeoff,
climb and low altitude cruise and 'short' for WFO and high altitude cruise.
>
> Ken P.
>
>
> >>  Homepage:  http://www.flyrotary.com/
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>