> Yes... the Lightning also suffers from this jitter when the > parking brake is > applied. It's not as bad as with previous versions of JSBSim > (where it could > rapidly escalate and flip the whole plane over) but it's there and a bit > annoying. > > I haven't played that much with the gear constants - they seem > about right > when landing, so I'm hesitant to mess about with them; but it > could be that > some of the jitter could be reduced that way? > > Cheers, > > AJ
OK, I have tried this out and identified the problem. It's with the landing gear. Don't use it, and you're OK! ha. ;-) Seriously, it seems to be there only if/when you use the brakes, and further it seems to only be there at initialization. I've tried it from a rolling speed - braking and stopping, and the jitter seemed not as bad. I can reproduce it in the standalone version of JSBSim using a custom script. That way, it will be much easier for me to develop a fix (and I still can't run OpenGL apps pending resolution of my video card problem). I'll be at the AIAA Modeling and Simulation conference in Keystone CO next week. I believe that at least a couple of papers are being presented about landing gear modeling. I may pick up some ideas there. If not, I may have some time to do some debugging using my wife's notebook, if I get up early enough... Jon ------------------------------------------------------------------------- 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
