They kept trying things like this, though it never made any sense. There’s no good reason to push against the air, when pushing against the ground is an option.

Unless you need to go faster than the traction with the ground would allow. You’d just need the fan to be more of a compressor and inject some fuel into the airstream.

Oh man could you imagine that thing ramming your asshole at full speed?

Sploooosh.

Only one downvote. Hrm…HRMMMMMMMMMMM…