Norman Vine writes: > > I don't think you really need a proper autopilot for using true > > values, just something that works with the magic FDM and moves the > > plane in a certain direction at a certain speed -- more of an > > animation manager than an autopilot. > > http://gps.faa.gov/Programs/WAAS/waas.htm
Norm, Norm, Norm -- I'm very disappointed. You're the one who has spent the most time drilling into everyone's head that GPS receiver readings are *not* the same as true values. Certainly, we'll want to be able to slave the autopilot to a GPS receiver as well as the HI, VOR, etc., but then we'll be modelling the GPS altitude errors and sampling-rate lag and adding a slight fuzzy factor (a significant one for altitude); if we get fancy we might even let the receiver have trouble locking on to satellites sometimes. In fact, even the C172R (which we're modelling) comes with a KLN89 or better GPS receiver, together with an autopilot that can be slaved to it instead of the VOR gauge for lateral control. All the best, David -- David Megginson, [EMAIL PROTECTED], http://www.megginson.com/ _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
