I'm building a cozy MKIV, and I plan to use a heater core, which will run
coolant through it all of the time, and act as secondary cooling.  I will
then use a flapper to either dump the output air from the heater core into
the engine compartment, or into the cabin.

Steve Brooks

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
Behalf Of Mark Steitle
Sent: Tuesday, December 02, 2003 7:02 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Heaters/defrosters


Is there a "best practice" for cabin heat/defrost systems for rotary
a/c.  Those of you that are flying, how did you approach this item.  It
seems to me that with all that heat going out the tailpipe, it is a
no-brainer... except for the carbon-monoxide thing.  Then again, I don't
want to be scalded with hot ethylene-glycol either.  The exhaust muff seems
like the lighter and simpler solution.  On the other hand, with proper
ducting, the heater core could add extra cooling during climb-out.

Comments welcome,
Mark S. (hot oil exchanger is out of the question)


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