LesterBoffo wrote in Thu Sep 09, 2021 10:17 pm:Besides adding the anchor point for the weight in the FDM [...]
As long as the FDM have weight points for external loads in the FDM no changes to the aircraft is needed.
These lines, in the file Cargo-Towing-Addon/Aircraft.xml in the add-ons directory, lets the cargo towing add-on know what property to to add weight to FDM with, and where to attach the 3D models:
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<aircraft n="31">
<!-- weight x="0.5" y="0" z="1.2" mass-prop="/sim/weight[1]/weight-lb"/ --> <!-- This *commented* line is copied from the FDM file. It the position of the weight point for the cargo hook and a good starting point when fine adjusting the location of the rope/cable. -->
<name type="string">500e</name> <!-- Name of FDM file without file extension. -->
<x-pos type="double">1.75</x-pos> <!-- Position of cargo hook (will likely need to be adjusted). -->
<y-pos type="double">0.0</y-pos> <!-- Position of cargo hook (will likely need to be adjusted). -->
<z-pos type="double">0.325</z-pos> <!-- Position of cargo hook (will likely need to be adjusted). -->
<offset type="double">3.75</offset> <!-- Seems to be z offset of rope/cable coil before takeoff. -->
<diameter type="double">0.75</diameter> <!-- Rope/cable coil diameter before takeoff. Might need adjustment to be within the skids. -->
<wincharm type="int">0</wincharm> <!-- /!\ I have yet to figure this one out. I have not used it. -->
<loadpoint type="int">1</loadpoint> <!-- The index of the weight point in the FDM. -->
</aircraft>
LesterBoffo wrote in Thu Sep 09, 2021 10:17 pm:[...] what do you have to add to the menu choices in the ***-set file?
You will get the extra menus by installing the cargo towing addon by adding the path to it and enabling it in the launcher (on the Add-ons page, under Add-on Module folders. (Could probably also be done on the command line). Again, no changes to the aircraft needed.
LesterBoffo wrote in Thu Sep 09, 2021 10:32 pm:Here's some long-line hovering with a AS315 Lama.
Real professionals make it look so easy. Even with auto-attach it takes me 5-10 minutes to attach a load. Lots of tries, fails, and a few crashes.