Thanks for the quick feedback btrueblood. Do you have any examples of the counter-rotating props? Additionally, I actually meant lift - but more in the hovercraft line of thinking. I didn't know if the counter rotation would create any gravity-defying gyroscopic forces (precession?) that...
Disclaimer: I'm a computer programmer, not a aeronautical engineer. With that said, I've always been fascinated with flight and originally went to school to major in AE. Here a couple of ideas I have had for which I have not been able to find any info online.
1) Counter-spinning Fan/Prop -...
