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727 Captain >> 727 Captain >> EPR Working with 2.3 https://www.captainsim.org/forum/csf.pl?num=1262009684 Message started by javiercuellar on Dec 28^th, 2009 at 2:14pm

Title: EPR Working with 2.3
Post by javiercuellar on Dec 28^th, 2009 at 2:14pm

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.

Title: Re: EPR Working with 2.3
Post by javiercuellar on Dec 31^st, 2009 at 1:29am

Re tested and it's still not working :(

Title: Re: EPR Working with 2.3
Post by Matt2218 on Jan 3^rd, 2010 at 8:36pm

javiercuellar wrote on Dec 31^st, 2009 at 1:29am:

Re tested and it's still not working � :(

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?

Title: Re: EPR Working with 2.3
Post by javiercuellar on Jan 3^rd, 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.

Title: Re: EPR Working with 2.3
Post by Matt2218 on Jan 4^th, 2010 at 11:40am

javiercuellar wrote on Jan 3^rd, 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 :P