TO1;TO2;CLB1 and CLB2
Joined: Mar 2001
Posts: 4,563
Likes: 35
From: I wouldn't know.
@skyjob, we do not fly to the UK, but pretty much everywhere else in europe and get unrestricted climb in the majority of all cases.
Granted, if a low level off altitude is expected we do use reduced climb power.
Granted, if a low level off altitude is expected we do use reduced climb power.
Joined: Nov 2009
Posts: 27
Likes: 0
From: EDDF
Derated Climb Performance In Large Civil Aircraft
Joined: Jul 2014
Posts: 344
Likes: 1
From: Germany
fuel capacity for 777-300ER from wikipedia: 320,863 lb / 145,538 kg
so let's say limit is 16h in the air that's 20053lbs/h or 9096kg/h
per engine that would be around 10026lbs/h or 4538kg/h.
now that's probably a bit high because it can stay in the air longer, not sure.
doing the same rough calculation for 7h of endurance of an 737-800 the 3000lbs/h seems realistic.
the 777 idle i would guess he is talking flight idle not ground idle.
but a much more pertinent question: why is this discussion in this thread?
so let's say limit is 16h in the air that's 20053lbs/h or 9096kg/h
per engine that would be around 10026lbs/h or 4538kg/h.
now that's probably a bit high because it can stay in the air longer, not sure.
doing the same rough calculation for 7h of endurance of an 737-800 the 3000lbs/h seems realistic.
the 777 idle i would guess he is talking flight idle not ground idle.
but a much more pertinent question: why is this discussion in this thread?
Joined: Apr 2008
Posts: 37
Likes: 0
From: by the river
Rick777: One other important concept with using derate is that min control speeds are based on the derate...
Note: V1 is based on the derate, not VMCG. V1 for TASS is based on full thrust TO, therefore in case of engine failure after V1 during TO with TASS you may increase power to MAX, but you may not perform this action during TO with D1 or D2 thrust setting, otherwise you will live RW a lit at bit early and in unpredictable direction.
Note: V1 is based on the derate, not VMCG. V1 for TASS is based on full thrust TO, therefore in case of engine failure after V1 during TO with TASS you may increase power to MAX, but you may not perform this action during TO with D1 or D2 thrust setting, otherwise you will live RW a lit at bit early and in unpredictable direction.
