On Friday 28 April 2006 17:36, Justin Smithies wrote: > Hi all, > I'm trying to model a 777-200 and i've borrowed the > autopilot from the 747 model. > I've started making changes to the file so it reacts with the > 777-200 model e.g 2 engines not 4 etc. > One issue which i'm not sure about is when i take the aircraft > to 4000 at 300 kts and put the autopilot on altitude hold of > 4000 it holds fine around 4000 but starts to wave up and down > a few hundred feet non stop so it is flying up and down not > totally level 'ish. ( Not good for passenger comfort ;) ) > What settings in the 747-autuopilot.xml file can i adjust to > try and take this effect out ? > > Any help would be very much appreciated. > > Justin Smithies
If you have a look at 747-autopilot.xml you'll see that for each autopilot mode/function there'll be one, or more, pid-controllers. These need to be tuned to match the flight characteristics for each specific aircraft. LeeE ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
