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FAN indicates 74 at max throttle.


VFA15-Juliet

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Engine RPM (core or fan) will depends on many factors, for example ambient temp. Most engines will have a range rather than a specific number. Many engine do not even bother to tell you the % RPM at high throttle settings ( or Power level angle PLA) so they only tell you;"Do not exceed this"

 

 

So I don't know if there is a problem or not.

To whom it may concern,

I am an idiot, unfortunately for the world, I have a internet connection and a fondness for beer....apologies for that.

Thank you for you patience.

 

 

Many people don't want the truth, they want constant reassurance that whatever misconception/fallacies they believe in are true..

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[ATTACH]181423[/ATTACH]

 

[ATTACH]181424[/ATTACH]

 

[ATTACH]181425[/ATTACH]

 

[ATTACH]181426[/ATTACH]


Edited by mvsgas

To whom it may concern,

I am an idiot, unfortunately for the world, I have a internet connection and a fondness for beer....apologies for that.

Thank you for you patience.

 

 

Many people don't want the truth, they want constant reassurance that whatever misconception/fallacies they believe in are true..

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Version 1.8.5, 1000' check from full power brake release, SL, 15C gives 81% actual virtually unchanged throughout the entire takeoff roll. 82.75% was only achieved in flight above 10,000'.

 

Chart indicates a 82.75% predicted fan speed or slightly over 1.6% under speed which would correspond to a 4% thrust deficiency.

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Ok. Thanks. So, if I am reading this correctly 77% Fan rpm is indicative of engine malfunction. I am getting constant 74% at Laughlin (Nevada) with he "Summer, heat" weather preset loaded.

My question is, am I just an inexperienced girl who does not get it, or is there something wrong?

Funny thing is that it was never like that in 2.2 OA

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If summer, heat is the same for NTTR as Caucasus then 42C should give nearly 79% (78.7%) with droop and ~80.3% (+1.6%) if droop is minimized by a high power engine run before takeoff.

 

74% is much lower than the chart predicts, an unacceptable amount which would dictate an aborted takeoff.

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