В сообщении от 9 Ноябрь 2006 20:13 Martin Spott написал(a):
> With your AN-2, the FDM places the VRP close to (or maybe "at", I don't > know exactly) the center of lift whereas the 3D model has its VRP at > the nose. Hmmm... VRP stay at 0,0,0 - you may see it at an2.xml. 3D model shifted (by 6.2 m by X ) to this point in an2-model.xml. Imho, both points is right, cause: If there is mismatch between ref points, rotation of model will wrong, you are right. I spend many times for tune center of rotation. Main reason was wrong position of long parts, outstanding from fuselage, for example, gears. If refs point was wrong, gear was sink under ground, when craft begin rotation. I remove this effect (by put ref point to right place), but there is small mismatch - you can see it, look to gear on landing. May be, it shoul be tuned more carefully... > The result is that, when you apply big movements to the > elevator in flight, the aircraft rotates around its nose like a wagging > dog tail. Airplane rotated around his center of gravity. It is near the nose, you are right, but it's right. FDM count CG at 160' from nose. You can open MSFS, load this model (there is link about original model in xml files), open payload menu and look at graphic. In another sim, CG will near the nose too. -- Wbr, Yurik ------------------------------------------------------------------------- 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
