Images shown in the categories singlerotor, twinrotor, CONSTAGs and skycranes are JPG images of CAD renderings. 3D CAD images are in DWG format. Recommended is the freeware "DWG TrueView 2020" of Autodesk, which is downloadable on their website. Your device would need min. 8 GB of RAM to work properly.
"On the rocks"
Tandemflight with pipe-spool