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Thread: IAE vs. CFM
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Old 1st Mar 2001, 01:42
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O\ZON
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Question IAE vs. CFM

Hoping the collective brains and regular contributors can help me out here...

Relates to the subject of IAE vs. CFM on the A320 with respect to airline economics.
Yawn !!
As i understand it, the CFM's burn more fuel, but have lower maintenance costs.

This would suggest to me that airlines based in the Middle East would be best suited to CFM's. (fuel being nearly as cheap as water). Yet most airlines down there use IAE.

I heard a while ago that IAE operate better than CFM's at higher temperatures, but cant for the life of me remember why that was.

Some stats
A320-212
Tref ISA+15
Tmax ISA+40
Tflex ISA+45

A320231 (V2500-A1)
Tref ISA+15
Tmax ISA+40
Tflex ISA+46

A320-214
Tref ISA+29
Tmax ISA+40
Tflex ISA+53

A320232 (V2527-A5)
Tref ISA+31
Tmax ISA+40
Tflex ISA+55

Clearly the Tref, Tmax and Tflex aren't determining factors. What other differences are there ??


Many thanks
O\Z