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Old 7th November 2008, 22:37   #21 (permalink)
 
Join Date: Aug 2002
Location: Switzerland, Singapore
Posts: 1,023
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.

Dani
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Old 7th November 2008, 22:54   #22 (permalink)
 
Join Date: Apr 2008
Location: LOWL
Age: 17
Posts: 31
Dani,


I think they invented a parameter called "thrust" on the A380, whereby 0% represents idle and IIRC 100% represents the maximum possible thrust for the current flight phase...
Seems quite comfortable and intuitive to me...
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Old 8th November 2008, 22:35   #23 (permalink)
 
Join Date: Aug 2002
Location: Switzerland, Singapore
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Excellent!

Hopefully all future types and versions will have that.

Dani
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