TOPCAT Performance

[jabad]

Good Morning to everybody.

I'm trying to use TOPCAT to calculate the Take-off & landing performance, CG, and Flex temps, but there's a huge difference on CG between the one calculated by TOPCAT and the calculated by jeheell MCDU, the same with the flex temp for example in topcat i got that the felx temp is +62º and the n1 is 82,3% if I introduce the flex Temp on the MCDU the N1 % adjusted is 85.2%.

It's possible to use TOPCAT for this purpose?

[digidax]

Good Morning,

you have used this TOPCAT A320 aircraft configuration file?
https://www.dropbox.com/s/nwyv3uacz2d07es/topcat.zip?dl=0

(https://www.dropbox.com/s/nwyv3uacz2d07es/topcat.zip?dl=0)best regards, Frank

[jabad]

Yes, I'm using this one

[jabad]

A real example today TOPCAT recommends a Flex take of with a Flex temp of +68º according TOPCAT N1 should be 80% when I introduce this temp on jeehell the FLEX N1 value showed on Engine screen was 83,6%

with a ZFW of 61419 TOPCAT says that the trim condition is 33,88% jeehell CDU 33,2%