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Date: Sun, 18 Dec 2005 20:00:14 -0500
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Heat Exchangers
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Ed Anderson wrote:

> No question if you optimize for cruise cooling for minimum drag, you 
> will undoubtedly encounter a cooling deficit at high power/low 
> airspeeds.   But, pulling back on power (and keeping airflow high as 
> high as practical) should allow it to work.
>  


Monty, you could also see if you can work in the same type of system 
that I'm planning.  Follow my logic for a moment.

When do you need that extra bit of cooling?  ...on really hot days at 
low altituded.
When do you wish most that you had airconditioning in the plane?  ...on 
really hot days at low altitude!

Since you also plan to move your radiators back into  the wing, see if 
you can rig up a "heat exchanger with a box on top" in line with your 
cabin air intake.  On really hot days, dump it full of ice before 
takeoff.  You get to stay a little cooler under the solar collector.  As 
the ice melts, you have to get rid of the drippings.  Just run a drip 
tube to an exit that's in front of the radiators.  Presto!  Two birds, 
one stone.

This is easy on the Delta.  Big fat strakes in front of you that are 
basically empty space.  I have no idea how it would fit in your project.

-- 
This is by far the hardest lesson about freedom. It goes against
instinct, and morality, to just sit back and watch people make
mistakes. We want to help them, which means control them and their
decisions, but in doing so we actually hurt them (and ourselves)."