It would be nice if anyone ordered one. However, it seems that we will have to wait until commercial manned spacecraft are flying before Bigelow Aerospace puts one up. Yes, it would be nice if they were to put a large centrifuge in one of them. I can imagine it would be used for a large number of experiments.

Actually, we don’t know this, because we have so little testing in the lower gravity zones. There is experience with long-term freefall (microgravity), laying horizontal in Earth gravity, a very little bit in lunar gravity, and some in higher gravity in centrifuges.

In the absence of a spinning section of a space station or spacecraft, this spinning table is about the best we can hope for in our currently sized spacecraft.

Wouldn’t it be interesting if SpaceX were to do some sort of testing in their somewhat larger Starship spacecraft? With trips to Mars in their future, they should have plenty of opportunity for long-term studies.

When walking the legs pump or assist the heart in returning blood and fluid back up to the body.
If your not walking fluid just builds up in the legs. This happens with nursing home patients and the elderly all the time.
That is why they sell compression socks to them.

Spinal compression can be done just as easily by supporting the weight of the body with the shoulders.

You have to get the heart and head into the high gravity zone.

pzatchok: I think you are incorrect here. The body is used to having the blood pool at the legs. That it doesn’t do so in weightlessness is one of the factors that causes problems in the spine, in the inner ear, in the cardio-vascular system.

Having the subject lie with his feet on the outside pulls the blood downward, as is normal in gravity.

His head is in close to zero G. His toes are in the highest G force area.

He would get a better effect by placing his head to the outside and his feet to the inside.

It takes more effort from your heart if you are hanging upside down than if you are just standing up.
Plus the higher pressure in his head would help with the bad eye problem for astronauts. Their ocular fluid pressure goes down, changing the size and shape of their eye balls. Thus forcing them to use glasses for the first time. And their glasses need changing weekly.

The module with the centrifuge at one end was cancelled due to budgetary considerations. To paraphrase Everett Dirksen: by saving a billion here, a billion there, pretty soon they were saving real money. Of course, they ended up with far less science for the bucks that they did spend, but then again: penny wise, pound stupid. What do you expect of politicians and bureaucrats?

pzatchok wrote: “The larger the centrifuge the less the effects of motion sickness.”

Bigger might be better, “But they are imagining new ways to design revolving systems that might fit within a room of future space stations and even moon bases.” — From the article

“NASA keeps tying to do things inside a shoe box instead of just admitting that a larger station would work and take on the engineering problems of the larger station.”

That’s how we ended up with an expensive space station that does so much less than we had expected or paid for. Countering NASA’s very expensive and large manned Mars plan is why Robert Zubrin imagined a new and cheaper way to go to Mars, which he calls Mars Direct. That is why SpaceX is designing a single spacecraft to take people to Mars, so the company would not go broke building a multi-module craft that is larger than necessary.

When it comes to propelling things in space, the shoe box is a nice size, which is why the Cubesat is such a hit with so many space explorers. Smaller might be better.

If someone is going to spin you around for health purposes then you probably want the right spin speed, not an arbitrary speed that a coworker spins you to. Too fast and you get sick. Too slow and you miss out on the benefits that your precious time in the chair was supposed to give you.

“I hope they have a plan to counter that spin.”

Often, a moving mechanism on a spacecraft comes with its own counterweight that rotates or moves in the opposite direction in order to impart the least possible motion onto the rest of the spacecraft. There are some exceptions, such as the Canadarm.

NASA keeps tying to do things inside a shoe box instead of just admitting that a larger station would work and take on the engineering problems of the larger station.

Looking at the table they are testing on, you might as well just have someone sit in an office chair and spin them around. Heck in space they could just float in the station and someone could spin them around.
Or how about a stripper pile in the middle of the room and use it like a tether ball set up. A harness attached so it doesn’t wind up like the tether ball does and around they go.
Light weight and cheap. But again you need an area large enough and the space station doesn’t have one.

Any spinning object will impart some spin to the space station its on. I hope they have a plan to counter that spin.
And the only thing this type of contraption will do it keep the people healthier.
Gravity has a thousand other just as important uses in space.
For one you can’t even boil a good pot of water without gravity. how will anyone make a decent cup of tea?

Just make the station bigger and spin the dang thing.