Tony Peden writes:

> On Fri, 2002-12-13 at 12:40, Jon S Berndt 

> > >I think it's pretty clear that we aren't going to agree on one
> > >coordinate system to use.  
> > >
> > >Aside from that, agreeing on one takes away the freedom to choose a
> > >location that makes sense for the aircraft you are working on (for both
> > >the FDM and 3D modeling). 
> > 
> > I may not have made myself clear. I'd personally like to 
> > use structural frame. However, that's not always 
> > available, so we have to come up with something. We really 
> > only care about distances, anyhow, not so much exact 
> > locations. So, if we agree upon a convention (origin at 
> > the nose tip, normally), then we can simply report the CG 
> > location in that system and the Euler angles and the model 
> > comes out looking fine. So, I think we can agree on 
> > something.
> 
> What I'm proposing is that we don't have to agree to use the same point.
> We just need to provide a way to correct for the difference.

Here Here !!!

Norman

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