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EPR Working with 2.3 (Read 1955 times)
javiercuellar
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EPR Working with 2.3
Dec 28th, 2009 at 2:14pm
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Ok, I've tested the EPR with appropiate performance charts and it looks it is fixed!!!!!!! At least for cruise, where I don't need TAT.

Climb and descent can't be tested because no TAT gauge avaiable.
  
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javiercuellar
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Re: EPR Working with 2.3
Reply #1 - Dec 31st, 2009 at 1:29am
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Re tested and it's still not working   Sad
  
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Matt2218
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Re: EPR Working with 2.3
Reply #2 - Jan 3rd, 2010 at 8:36pm
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javiercuellar wrote on Dec 31st, 2009 at 1:29am:
Re tested and it's still not working � Sad


Javier -

Not sure what you mean here...the EPR readings are not accurate?

Or are you saying you are not able to use them because you don't know what the TAT is?
  
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javiercuellar
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Re: EPR Working with 2.3
Reply #3 - Jan 3rd, 2010 at 11:07pm
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For climb I need the TAT, so I can't use tables, but for cruise speed TAT is not needed.

Ex. Base on 727-100 charts, to obtain 0.78 mach at FL250 with 130.000lbs (gross weight), 1.63 EPR is needed.  If you put 1.63, speed will be 0.70 mach, not 0.78M.
  
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Matt2218
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Re: EPR Working with 2.3
Reply #4 - Jan 4th, 2010 at 11:40am
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javiercuellar wrote on Jan 3rd, 2010 at 11:07pm:
For climb I need the TAT, so I can't use tables, but for cruise speed TAT is not needed.

Ex. Base on 727-100 charts, to obtain 0.78 mach at FL250 with 130.000lbs (gross weight), 1.63 EPR is needed. �If you put 1.63, speed will be 0.70 mach, not 0.78M.


OK I understand...thanks Javier.

I guess it's good that I set my EPR by the "trial and error" method  Tongue
  
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