Mailing List flyrotary@lancaironline.net Message #2354
From: Al Gietzen <ALVentures@cox.net>
Subject: RE: [FlyRotary] Cooling?
Date: Sun, 3 Aug 2003 08:45:07 -0700
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>

 

Ed and all,

What is the ratio of air-outlet area to air-inlet area on your plane?  I

have read/heard it should be ~1.3x inlet area for ground and high power

output situations.

TJ<><

 

The ratio should be more like 1.6 to 1.8.  Do the math – air expands directly proportional to temp – so in at about 80 F and out at about, say, 130 to 140; gives a ratio of 1.7.

 

Al

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