[younes533]

I ask you to tell me the maximum vertical speed of the aircraftduring descent and take off

[Cpt.Mohammed]

Hi sir

every aircraft has its specific maximum vertical speed at the moments of climbing or descending , also this ratio depends on the gross weight of the aircraft , but if you are searching for the suitable V/S for any aircraft as a trade secret , it's the ratio that during a climbing cannot decrease your airspeed so high , and during a descending cannot increase your airspeed so high ....

for huge jets , it's suitable to use 1500 FPM if you need a long time climbing or descending , about 2500 if you need a fast climbing or descending , and about 2800 : 3200 with controlling your airspeed by spoilers for an immediate descending or by a full thrust for immediate climbing ...

but it still my brother as your sense of the aircraft ..

best regards