Thread: Aircraft orders
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Old 02-08-2008, 04:03 AM
  #9  
Ottopilot
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Joined APC: May 2006
Position: 737 CA
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Originally Posted by captjns View Post
CFM-56 Not efficient? In don't know but at 88 pounds per minute average calculated burn with 189 passengers on board alone without cargo that translates to .465 pounds per person per minute. Based on a cruise speed of 430 knots that translates to about .0469 lbs per seat mile. And thats based on crusing in the low to mid thirties. FLs 400 and 410 the effiency is just trememdous, compared to the good old 72 AKA "Old Smokey" I used to fly.
Comparing the CFM's to antiques doesn't mean much. The CFM's are not as efficient as they could/should be in the 21st Century.
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