TO1;TO2;CLB1 and CLB2
Join Date: Mar 2001
Location: I wouldn't know.
Posts: 4,497
Likes: 0
Received 0 Likes
on
0 Posts
@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.
Join Date: Nov 2009
Location: EDDF
Posts: 27
Likes: 0
Received 0 Likes
on
0 Posts
Derated Climb Performance In Large Civil Aircraft
Join Date: Jul 2014
Location: Germany
Posts: 344
Likes: 0
Received 0 Likes
on
0 Posts
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?
Join Date: Apr 2008
Location: by the river
Age: 62
Posts: 37
Likes: 0
Received 0 Likes
on
0 Posts
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.