OpenRocket is designed to simulate a particular set of components for which it is well understood how to calculate drag and CP. It does not understand arbitrary geometries, and in general would have no idea what to do with a component specified in an STL file.Thanks! Yep, Abby's is still there...would be great to get together some time.
I wish ORK would let you import an STL because I used Tinkercad to prototype my scoop.