Roberto/Dick/Ollie/BanktoTurn......Points well taken ..This is why when aircraft(Refering to large transport category aircraft) are certified they are done individually due to the uniqueness of all those aerodynamic combinations your speaking of...operating envelopes , T/O and Landing speeds ,Numerous "V" speeds,Max fuel wt,gross wt,Stall Speeds, single engine performance for twins,..Etc...Have made several trips out to Boeing in Seattle and was quite impressed with their flt testing....as well as structural testing..... so in a nut shell each airframe whether a trainer or 777 has its own unique flt characteristics..and by going thru some experimentation those answers can be found....rather than some simple calculation or formula......Bill...