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Fell down a rabbit hole last night of reading about rotor ships: en.wikipedia.org/wiki/Rotor_sh

The aircraft equivalent is the Flettner airplane which uses spinning rotors instead of wings, which seems so bonkers counterintuitive:

en.wikipedia.org/wiki/Flettner

Video of a working model one to show that this isn't just someone's bizarre fantasy youtube.com/watch?v=hlmvHfIAsz

Realised from watching the video that the way you steer it is by spinning one drum faster than the other. No need for ailerons

Flettner airplanes probably never caught on because if you happen to lose power to the spinning drums it drops out of the sky like a rock. lol. lmao

"You can't just use spinning KFC buckets for wings"

"haha flettner plane go brrrr"

@fraggle if you want to fall further in a hole, look up ekranoplans

@fraggle whereas an A320 can glide 120km frome cruising altitude to a safe emergency landing airport with 0 thrust whatsoever...

@fraggle @cwebber You can make a quick model one with a pencil, a rubber band, and two paper cups. Tape the cups together at their bases, attach one end of the rubber band to the pencil, wind the rubber band around the cups semi-tight so when you hold the pencil and fling it up in the air it makes them spin. Kidlet showed me how a while back.

@fraggle making a plane with a glide ratio worse than a helicopter is a pretty impressive achievement

please never build this, actually 

@fraggle ...clearly it's time for a flettner-gyrocopter hybrid...

@fraggle spinpunk. Like steampunk but everything runs on this

@fraggle oh yeah i wound up at that same page from a different rabbit hole starting from "the age of sail" (which linked to "new age of sail" related pages as some people believe wind power will make a comeback as shipping becomes greener). pretty neat tech.

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