[NSRCA-discussion] Cooling inlet/out sizes???

[Randy hatfield]

I heard 3 times the size of the inlet.

Anyway, how did they do it wuith the P-47 and C-54?  Cowl Flaps or something like that so they could adjust the size of the outlet in flight.

Randy
  ----- Original Message ----- 
  From: Bill Glaze 
  To: NSRCA Mailing List 
  Sent: Monday, February 13, 2006 12:48 PM
  Subject: Re: [NSRCA-discussion] Cooling inlet/out sizes???


  Makes for an interesting cowling if it's a scale radial engine; i.e. P-47, F8 Bearcat, Stearman, etc.
    ----- Original Message ----- 
    From: jivey61 at bellsouth.net 
    To: TJS at mail.global-electronics.com ; NSRCA Mailing List 
    Sent: Sunday, February 12, 2006 11:21 PM
    Subject: Re: [NSRCA-discussion] Cooling inlet/out sizes???


    Tim
     I think the rule of thumb...... exhaust should be 4 times the area of the intake. That also depends on the oat(temp) you fly in.

    Jim Ivey
      ----- Original Message ----- 
      From: Tim Of Global Electronics, Ltd. 
      To: NSRCA Mailing List 
      Sent: Sunday, February 12, 2006 11:03 PM
      Subject: [NSRCA-discussion] Cooling inlet/out sizes???


      Can anyone tell me which should  be larger, the colling air input or the exhaust output inside the cowl???

      Thanks
      tim 



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