PPRuNe Forums - View Single Post - A320 IAE V2500 powered VS A320 CFM powered?
Old 7th Nov 2008, 20:37
  #20 (permalink)  
Dani
 
Join Date: Aug 2002
Location: Switzerland, Singapore
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Still, even when they are enlarged, it's still not user-friendly.

Problem is, that the IAE V2500 engine still produces about 1.2 thrust on idle, and about 1.6 when full thrusting.

Contrary to some opinions, EPR is not non-user-friendly, just when it's displayed the way AI does. They should enlarge the scale of the operating thrust, i.e. 1.2 - 1.6 and forget about the rest. Or you could enlarge the operating thrust and reduce the rest, like an algorithmic indication. Additionally, they should forget about the real EPR value. We are not interested if it's above one, we are just interested in the relative value. You could easily convert the 1.x figure into a percentage figure. Or just show as the value above 1.0, i.e. 200 to 600 (equivalent to 1.2 to 1.6). There are endless possibilities how to make it better than now.

There are very good examples of how to display EPRs user-friendly, inclusive the type I fly presently.
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