Hi,

Hasn't anyone noticed that the FDM model landing gears (in fact, the 
whole FDM model) on the 737-300 is 9 meters behind the 3d model landing 
gears?! I almost never fly jetliners but that there was an alignment 
problem was obvious from the first glance in external view during taxing..

It is pretty much invisible from cockpit view, though, so I can see how 
serious pilots might not notice the problem.. :)


I thought I had sent this patch last year, but it seems I might not have 
done that.

Anyway, here are two alternative ways of aligning the 3d model with the 
FDM model:

Alt.1. Adjust the visual reference point (VRP) in the JSBSim FDM config: 
http://www.gidenstam.org/FlightGear/aircraft_updates/737-300-offsets-1.diff


Alt.2. Adjust the offsets in the 3d model XML file. Note that one has
         to modify the cockpit view location and usually also need to add a
         corresponding target-z-offset to the external views to
         make those look good with the repositioned 3d model.
http://www.gidenstam.org/FlightGear/aircraft_updates/737-300-offsets-2.diff


I think alternative 2. is preferable since it avoids the risk of 
losing the VRP offset, should the FDM config be overwritten during a 
future JSBSim update. The Alt.2. method also works for YASim aircraft, 
should any of those need alignment.

Silly (and old) postfix demo:
http://www.gidenstam.org/FlightGear/aircraft_updates/fgfs-737-300_adjusted.jpg
Try that with the 737-300 in CVS...

Cheers,

Anders
-- 
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Anders Gidenstam
mail: anders(at)gidenstam.org
WWW: http://www.gidenstam.org/FlightGear/

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