On Saturday 10 January 2004 16:34, Paul Surgeon wrote:
> On Saturday, 10 January 2004 17:47, Andy Ross wrote:
> > Having the FDM coordinates and model coordinates match up is
> > critically important for collision issues like gear compression.
>
> That is exactly my concern which made me ask about the FDM and model
> origins in the first place.
>
> I don't mind if the origin of the FDM and model can be adjustable but once
> they are set they MUST be static regardless of CG changes.
> Just because the aircraft may have burnt some fuel off the FDM should still
> line up with the model.
> From what I understand that is not the case but I'll re-read the entire
> thread again to make sure I haven't misunderstood the whole issue.
>
> Paul

It does work - one of the things I have to remember to check is that the plane 
doesn't tip up backwards on the ground when there's no fuel in it - it can 
happen :)

LeeE


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