I must admid it, you have made my day. :-)
Erik
Very few MSFS AC have 'realistic' flight models. ;) Though AVSIM reviewers and a bunch of desktop pilots often think they are.
FS2K+ can't use realistic values of Cm_q and Cn_r at Mach 0.7/30,000 ft or higher I've had to increase those two by 50% or more to get enough pitch and yaw stability so the crappy 'autopilot' in FS2K2 won't make an AC porpoise or even lose ALT control.
In the jets, MS defaults and 99% of FS 2'nd party AC are set with dampings 4 to 20X realistic values. Assuming Cm_q = -20 is ealistic. -5.0 is more likely for the Fighters mentioned above.
Further, I found a 30 lb AC isn't stable in FS2K2 with nominal SD's. Nor did scaling it to 80 lbs help.
Lighter FS2K2 AC may jitter on the runway unless Roll MoI is increased above the real value.
Ron
_______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
