Mailing List flyrotary@lancaironline.net Message #54480
From: Tracy <rwstracy@gmail.com>
Subject: Re: [FlyRotary] Tracy's Cowling/Cooling Mods
Date: Sat, 9 Apr 2011 09:41:03 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Hi Bill,
   There is really not much to show about my inlets.   They are literally just two round tubes  (5 1/4" and 5") and that is not what  I would recommend.  There should be a nicely curved bell mouth on them which folds back to blend with the cowl when I am finished.

That said, there is no magic in the inlets anyway.  Much more important are the ducts and diffusers behind them.  Also important is the cooling air outlet.  This is of course a subject for an entire book, not an email.  Kuchmann & Webber's "The Aerodynamics of Propulsion" is a good place to start.

Tracy

On Sat, Apr 9, 2011 at 9:14 AM, Bill Bradburry <bbradburry@bellsouth.net> wrote:

Did anyone happen to get a picture of Tracy’s plane at SNF that would show what he has done to modify/improve his cooling inlets?  I am in the “design/invent” mode to try and improve my cooling and I would really appreciate some ideas that work.

 

Anyone seen it that could describe the changes?  Anything would help!   :>)

 

Bill B


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