Originally Posted by
CONF iture
Quote:
Originally Posted by Zeke:
CL can command the same N1 as MCT.
If it takes the MCT N1/EPR to accelerate and/or climb whilst in CL, autothrust can command it. Pretty basic stuff
And originally Answered by myself:
So, FCOM ignores the pretty basic stuff:
"When A/THR is active, FMGS commands the thrust according to the vertical mode logic, but uses a thrust not greater than the thrust commanded by the position of the thrust lever. For example, when the thrust levers are set at the CL (climb) detent, the A/THR system can command thrust between idle and max climb"
Again you are showing to lack of knowledge on Airbus systems.
FCOM 2.02.14 P1 FLEX TAKEOFF REQUIREMENTS, the FLEX EPR (V2500) or N1 (CFM) cannot be lower than max climb EPR (V2500) or N1 (CFM) at the same flight conditions.
I.e. on normal flex takeoff you may command a takeoff EPR (V2500) or N1 (CFM) equivalent to max climb EPR (V2500) or N1 (CFM.
Max climb EPR (V2500) or N1 (CFM) are computed values, they change with flight conditions.
In summary, going from MCT to CL or CL to MCT does not _always_ change EPR (V2500) or N1 (CFM). You will only _always_ get a reduction when going TOGA to CL.