On Thu, Aug 28, 2003 at 03:03:40AM +0100, Lee Elliott wrote: > I'm not very familiar with JSBSim so I don't know if it includes a gear > compression factor. This could be important when you set the gear up because > it might assume, or you might have to tell it, whether the gear z-axis is a > loaded or unloaded figure. > > When I started animating u/c suspension I found that it's easier if you model > the gear at it's unloaded extension i.e. it's position when the a/c is in the > air and there's no weight on it. If you're not going to animate the > suspension then you should model the gear in it's loaded position other wise > it'll stick through the ground while it's landed.
I'm not gonna animate suspension at the moment. i guess the dxfs i used are set up for the a/c sitting static on-ground. I was wondering about how jsbsim determines where to put the 3d model. All i can see in the config is the geometric refences of the different a/c parts like engines, gear, c.g., pilot eye pos'n,... but nothing referencing that coord-system with ground, except thru the gear pos'ns Two ways i can imagine jsbsim doing this: (imagine the gear, all with different lenghts) 1. it takes the AC_GEAR from <UNDERCARRIAGE> that would hit the ground first if the aircraft would be dropped down on the runway vertically. 2. it does 1. but for all three, but rotating/translating the 3d model so that all 3 gear of the 3d model will be on the ground like the real world (given that the 3d model and the fdm gear definitions correspond) Regards, Manuel _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
