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rwalters31 asked

Terrain Normal Vector / Slope

I am an aerospace engineer that specializes in helicopter flight dynamic models. In order to write a custom flight dynamics model I need to be able to get information about how the aircraft is interacting with the ground. I have looked and I do not see how to get the surface normal vector of the terrain below specific points of the aircraft (wheels, skids, etc.). How are others getting this information? Thanks for the help.

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