Have been trying to convert a wind turbine (standard and animated) collada model to glTF. The turbine was saved using SketchUp. The conversion results in a turbine with only one blade. Tried the online conversion and the colladatoglTF from command line with the -e option. Please suggest.
It’s hard to say without the model, but it may be related to this bug: https://github.com/AnalyticalGraphicsInc/cesium/issues/1754 Which is currently being worked on in the gltf-instancing branch.
If you want to try building that branch from source, you can confirm that it is indeed the issue. Otherwise, if you can share the model; it should be easy for us to check.