I like your idea of an
I like your idea of an 'inverse steam generator'. Congratulations! You have invented the steam engine :D
The beauty of using electric motors is that they don't need oxygen to burn anything, so you can fly really high, where the atmosphere is very thin. Thin atmosphere means lower drag, so you can fly faster and/or more efficiently. Those blades would have to be spinning really fast, but I guess that's already the case in jet engines today.