Engines
Just wondering, how do you make engine fans appear to move? In some aircraft they don't.

Flight Simulator and other chat
https://forums.simviation.com/phpBB3/
https://forums.simviation.com/phpBB3/viewtopic.php?f=15&t=36406
The 707, in this case, has stationary blades in front of the actual spinning turbine. So while it doesn't look like anything is going on there really is behind the scenes 