I think the simple solution here is to modify the autopilot config so the input is not from a vacuum driven heading indicator since you don't have one, but from a different property that you do have.
The autopilot is designed to be very configurable in this respect and even though it can be complex, you can create a custom config for each aircraft that matches it's real world capabilities and design quite closely. Curt. Vivian Meazza wrote: > In the course of developing the KC135, I noticed that parts of the autopilot > function do not work in that model, copied from the B737 - the bits > described as vor/loc and app. Investigation showed that the cause was simple > - in JSBSim a jet ac does not have vacuum system. No vacuum - no Heading > Indicator - no Heading Indicator - no vor/loc etc. So quick as a flash I > rustled up an electrically driven one. Simple solution? Wrong: when I tried > to implement a dedicated instrument.xml configuration for the KC135, using > the new Heading Indicator, the old one was still present (and still > inoperative). This is caused by xmlauto.cxx initiating before > instrumentmgr.xml, and creating the unnecessary nodes which it needs. So I > changed the initiation order. But by this time I realised that the simple > Heading Indicator we have is not what would be fitted to a KC135, or indeed > any jet ac since the '50s onward. We need what I would call a flux gate > compass (you might know a more modern term). This is more or less just the > property orientation/heading-magnetic-deg, but I thought that, for > completeness a proper flux gate instrument electrically driven etc, would be > nice. So I coded up one, and amended xmlauto.cxx so that it uses whichever > sort is configured and does not generate spurious ones. > > Now, I might have got hold of the wrong end of the stick here, and someone > may well know better. I intend to arrange the upload of these pretty trivial > changes at the weekend unless otherwise directed, or as I would have said in > a former existence UNODIR. > > Regards > > Vivian > > > > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > -- Curtis Olson http://www.flightgear.org/~curt HumanFIRST Program http://www.humanfirst.umn.edu/ FlightGear Project http://www.flightgear.org Unique text: 2f585eeea02e2c79d7b1d8c4963bae2d _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
