> >Bad data. > > On the part of ... ? I'll attempt an explanation. If I'm wrong maybe Tony can add two words. OK, one and a half.
1) A JSBSim airplane can only be placed on the ground after going through an iterative routine to lower it and adjust it's body angle to balance-out the forces at the gear. 2) If the airplane could be removed and placed back at the exact trimmed position and orientation immediately, it should be able to stay still because nothing has changed. 3) If the airplane burns fuel, then its CG and weight changes, therefore if you try to return it to the former trimmed position, which was based on a heavier weight and different CG, then there will be too much, and an unbalanced amount of, spring tension. 4) Therefore, to reset the airplane at the runway, a JSBSim airplane must be allowed to run through the same trimming routine it does at start-up. No shortcuts are allowed. Dave -- **************************** David Culp davidculp2[at]comcast.net **************************** _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel