> Reading about the flight control system of the thrust vectoring > fa-18 HARV in > > http://techreports.larc.nasa.gov/ltrs/PDF/NASA-96-tm110216.pdf > > and loooking at the released MATLAB code of a simulation of this plane > available from > > http://www.dfrc.nasa.gov/Research/HARV/Work/NASA2/nasa2.html > > gives me the impresson that even those control theory blocks are not > sufficient for modelling this plane. Look into the file roll_stick_limits.m, > there is plain computational code to get the aileron, stabilizer > and rudder command of an f-18. > > So everything which cuts down flexibility in the area of the > flightcontrol system/autopilot is a problem.
Yikes! That's interesting. It's interesting that the file is called "roll_stick_limits". Judging by the title alone it would seem to be simply a complicated way to calculate the limits of pilot stick roll inputs. In fact, this is what the comment at the top of the file says: "this function calculates the roll command limits for the honeywell control laws" I'd like to see a verbal description of this. It's probably a variable roll rate limit based on alpha -- it is an experimental high alpha research vehicle after all. No matter what system is in place in FlightGear, this kind of research stuff would only be possible with special custom code. Jon _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
