hi everyone, i’m wondering if anyone could please tell me what’s the difference between D-TO1, D-TO2, and FLEX thrust setting. Also what’s the N1% for each of those thrust setting (i’m using B77W btw)
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Great question!
IRL during takeoff operations pilots use different thrust settings depending on conditions like temperature , rnway length , weight and desired climb performance
there is something called derated takeoffs
The settings you mentioned D - TO1 , D TO2
These are different derated takeoff thrust settings what that means is pilots use less thrust to preserve engine life and accommodate temperature
Usually as a rule of thumb you can remember
TO - 100 percent thrust
DTO1 - 90 percent thrust
DTO2 - 75 percent thrust
Flex thrust basically refers to derated or reduced thrust settings
It is calculated using something called as flex temperature
REMEMBER ONLY USE DERATED THRUST SETTINGS WHEN RNWAY IS LONG ENOUGH AND YOU ARE NOT VERY HEAVY!
for reference you can use simbriefs takeoff performance calculator it gives you a recommended thrust setting
Hope this helps!
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thanks bro appreciate it
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that all correct, and for Airbus it’s called “thrustClimb” but the method has the same purpose
I use that method on every single jet trips I do in the Sim, It mainly help you to save fuel while you climbing for whatever your trip lengh is.
For example, I use to reduce my Thrustclimb on the A321 between 87% or 85% after the takeoff all the way to my selected cruizing level (if sufficent) and belive me, it help ALOT !
Fly save budy
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