[Crash one]

I seem to remember a backward rotating spherical "airship" with a gondola suspended from its axis. Supposedly some form of heavy lift transport project.~60s Tomorrows World BBC.
How it is/was steered I know not, differential thrusters?
I thought Benoulli (spelling) was involved.

[lobstaboy]

The NASA Glenn Research Centre have lots of good explanations for aerodynamic theory on the web. They are simple, clear and easy to grasp, while not being dumbed down in any way. Here's the link to their explanation of the rotating cylinder https://www.grc.nasa.gov/www/k-12/airplane/cyl.html

And here is the starting point for the answer to the question posed in the OP
https://www.grc.nasa.gov/www/k-12/airplane/bernnew.html