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Horizontal running inside circular walls of Moon settlements

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Re: Horizontal running inside circular walls of Moon settlements

#61

Post by OscarCunningham »

romanhn wrote: post #38

Reminded me of circular wall running in 2001 Space Odyssey more than 50 years ago: https://youtu.be/1wJQ5UrAsIY

If he ran in the same direction as the station was rotating then he would feel extra force pushing him into the ground, whereas running the other way would cancel some of the centrifugal force. I wonder if the directions would feel like 'uphill' and 'downhill'. I assume for training purposes you would probably want uphill. I don't know if the movie gives you enough information to work out which way the spinning section is going.

Re: Horizontal running inside circular walls of Moon settlements

#62

Post by TheDudeMan »

Nevermark wrote: post #12

I didn't see any mention of having a spinning surface. A tapered cylinder "gravity gym" with adjustable angled walls, and variable speed spinning, could smoothly create much greater "gravity". Spin gravity would also enable body weight exercises, core exercises, stationary or small area cardio like exercise bikes, VR games, yoga, etc. Even sleeping. EDIT: I missed this: > but Moon-based centrifuges allowing locomotio…

It's easier in space. I suspect it will happen there first and predominantly.

Re: Horizontal running inside circular walls of Moon settlements

#63

Post by semi-extrinsic »

latchkey wrote: post #48

I spent so many years riding bikes in circles on a velodrome. Doesn't seem too different. When I would ride behind a motorbike, at 40+ mph, it was effort to just keep my body from being pushed down into the handlebars. At 50+, my tires would start to skip upwards/outwards.

Keep in mind if you are putting in enough speed to get rotational acceleration of 0.5 G on Earth, that would be around 1.3 - 1.4 G total acceleration (depending on the bank angle). But on the moon it would just be 0.5 - 0.6 G.

Re: Horizontal running inside circular walls of Moon settlements

#64

Post by duskwuff »

fallingsquirrel wrote: post #17
Nevermark wrote: post #12

I didn't see any mention of having a spinning surface. A tapered cylinder "gravity gym" with adjustable angled walls, and variable speed spinning, could smoothly create much greater "gravity". Spin gravity would also enable body weight exercises, core exercises, stationary or small area cardio like exercise bikes, VR games, yoga, etc. Even sleeping. EDIT: I missed this: > but Moon-based centrifuges allowing locomotio…

You probably know this already, but for a while people were toying with the idea of a "childbirth centrifuge". https://patents.google.com/patent/US3216423A/en There's probably a reason it never caught on.

Also the subject of an opera. http://www.henryakona.com/the_blonsky_device.html

Re: Horizontal running inside circular walls of Moon settlements

#65

Post by corlinp »

antonvs wrote: post #53
corlinp wrote: post #43

Finally I get to be that guy in the comments with a weird about of relevant experience. I built the world's largest hamster wheel in 2012[1], a large rotating circular platform ~6m in diameter. It was a fun and unique experience to run on for a short amount of time, but most people would get dizzy after a few minutes of jogging on it. The curved platform also turned out to be a bit of a tripping hazard. It was more o…

With a hamster wheel, aren't you basically running in one spot near the bottom? If so, do you know what causes the dizziness?

Because you're looking forward at the platform that's moving down and toward you. Kind of like if you were to stare down at the belt of a treadmill while it's moving - it would be disorienting after a while.

Re: Horizontal running inside circular walls of Moon settlements

#66

Post by latchkey »

semi-extrinsic wrote: post #63
latchkey wrote: post #48

I spent so many years riding bikes in circles on a velodrome. Doesn't seem too different. When I would ride behind a motorbike, at 40+ mph, it was effort to just keep my body from being pushed down into the handlebars. At 50+, my tires would start to skip upwards/outwards.

Keep in mind if you are putting in enough speed to get rotational acceleration of 0.5 G on Earth, that would be around 1.3 - 1.4 G total acceleration (depending on the bank angle). But on the moon it would just be 0.5 - 0.6 G.

Very interesting point, thanks!

Re: Horizontal running inside circular walls of Moon settlements

#67

Post by peeters »

skykooler wrote: post #33

Could you do this in zero-G, too? This seems like a lot simpler than trying to have a section of a space station rotate and maintain seals around it.

I think having some level of gravity is important for the simplicity of it. With a downward force it acts somewhat like a velodrome. You start angled upwards and as you gain centripetal force you gradually go more and more horizontal.

Theoretically you could achieve the same result in zero-g, but getting started is much more difficult, as are microadjustments in speed and balance.

Re: Horizontal running inside circular walls of Moon settlements

#68

Post by purpleidea »

alex_young wrote: post #49
pmcarlton wrote: post #18

It takes a few clicks to get to the supplemental data movie: https://rs.figshare.com/articles/media/a_participant_running... You'd probably want to switch directions often!

Why? The bungee cord is only needed for earth gravity.

Because the moon still has gravity, and there would be some asymmetrical force on your legs either which would be reversed if you went the other direction. So switch directions all the time to be less lopsided.

Re: Horizontal running inside circular walls of Moon settlements

#70

Post by pwr22 »

alex_young wrote: post #49
pmcarlton wrote: post #18

It takes a few clicks to get to the supplemental data movie: https://rs.figshare.com/articles/media/a_participant_running... You'd probably want to switch directions often!

Why? The bungee cord is only needed for earth gravity.

It's not a symmetric exercise, look at the feet. You'd probably want to keep the overall workout balanced by alternating periodically?
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