APPYMAN,
What type of aircraft are you talking about???
J_T,
not to mention the odd numerical analysis problem in achieving appropriate levels of accuracy ...
You might be surprised at how inaccurate the present systems are! Considering that there is only one AFM for an aircraft, boeing offers 3 computerized systems for takeoff analysis on the B744. Their latest uses the first principle method of calculations rather than the older model tables. They believed that the increased takeoff weight of this "program" was worth $250k per tailnumber, as if offered 8000 kgs more takeoff weight out of hot and high airports.
Doesnt say a lot about the accuracy of their older programs...
Mutt.