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From: "Christopher Zavatson" <Christopher.Zavatson@baesystems.com>
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Subject: Re: [LML] Engine Cooling and Cabin Heat
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X-OriginalArrivalTime: 26 Sep 2005 17:43:14.0305 (UTC) FILETIME=[C535EF10:01C5C2C1]

Bill,
<<Am I correct and would installing a separate NACA duct to supply air to =
the cabin heat valve result in lower CHTs?>>

Why not perform a quick test to check the impact.  Go on a reference =
flight and record; ALT, MP, OAT, RPM, EGTs, CHTs, and the price of avgas.  =
Now block off the cabin heat inlet.  You'll also want to disconnect the =
tubing at the heat muff so that you don't get a bunch of stagnant hot air =
in there.  On the test flight reestablish the same flight conditions as =
closely as possible and take you readings.

Chris Zavatson
N91CZ
360 std.
www.N91CZ.com