Alan King <[EMAIL PROTECTED]> said: > Andy Ross wrote: > > > Alan King wrote: > > > >>The 'nose' is a bad choice for either the viewing center or the FDM > >>center. > > > > > > Except for the obvious fact that it's 100% unambiguous. It's not > > uncommon for the FDM definition and 3D model to be done by different > > authors. Take 21 people and ask them to identify the "POS" (or > > quarter chord point, or aerodynamic center, or even c.g.) and you'll > > get 21 different answers. Any child over six can find the tip of the > > nose on a photograph. > > If the visual model doesn't have EXACTLY the same distance from the nose to > the POS as the FDM, then they are out of line, period.
Alan, Thanks for your input. But please review the last 4 or 5 threads on this subject over the last couple of years. Then think about it for a while. Maybe this will help: Unless you crash the plane, or you are flying a concored sst, the nose will _always_ have exactly the same relationship in 3D space to the furthest aft point of it's tail. The x, y, z distances between the two points will always always be the same no matter what orientation the aircraft takes. This applies to any two fixed points on the aircraft. If above suggestions don't work, try --aircraft=p51d in flightgear. The P51-D uses the nose as the reference point/origin for both the 3D Model and the FDM config. Best, Jim _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
