CG estimate for control laws independent of pilot input
BuzzBox - thanks for the reference document.
I see that there is an independent computation of CG and GW based on aerodynamics that is used for the control laws. My interest is mostly in that functionality as control law gains defining closed loop stability and handling qualities are impacted.
From the reference it appears that for the single aisle models the CG and GW estimates used by the control laws are completely independent of pilot input of ZFW and ZFCG. For the long range models the picture does not look quite as clear with the stated impact on control laws characterized as "slightly affected".
I realize that the aerodynamics based estimates will only be available in air and then only after a certain period of time to allow the associated estimation algorithms to converge. If the control laws are dependent on CG and GW during takeoff roll and/or initial climbout I suspect that either default values coded with the control laws or the data input by the pilots will have to be used.